JP2015186290A - Power management method, power management system, power management apparatus and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly determine discharge power amount of a storage battery for peak cutting and a discharge power amount of storage battery for demand response.SOLUTION: The power management method includes the steps of: acquiring user's power demand; identifying a time zone in which the power demand exceeds a predetermined threshold value as a first time zone; identifying a time zone in which a commercial power supply is controlled by an administrator for power saving as a second time zone; and determining discharge power amount in the first time zone and the discharge power amount in the second time zone based on the residual amount of the charged power on a storage battery.

Description

  The present invention relates to a technique for suppressing the amount of power supplied from a commercial power supply to a consumer using a storage battery.

The electricity charge for the commercial power supply is composed of a basic charge and a power use charge corresponding to the amount of power used, and the basic charge is determined by the peak of the power use amount of the commercial power supply by the consumer in the past predetermined period.
Because of this fee structure, power supply from the storage battery to the load equipment such as the lighting equipment and air conditioning equipment of the consumer during the time when the power demand of the customer exceeds the predetermined amount of power has been conventionally achieved. A mechanism of peak cut (sometimes called peak shift) that suppresses the peak of power consumption is widely adopted (see, for example, Patent Document 1).

Moreover, there is a limit to the power supply amount of the commercial power supply, and there may be a case where a large amount of power demand from the entire consumer is expected with respect to the power supply amount. In such a case, it is necessary to reduce the amount of power used by the commercial power source on the consumer side.
For this reason, a demand response (DR: Demand Response) in which an electric power company has conventionally requested a power saving to a consumer and paid an incentive to the consumer who has reduced the power consumption of the commercial power source during the time when the power saving request was made. The mechanism is widely adopted (see, for example, Patent Document 2).

  Even in such a demand response mechanism, power can be supplied from a storage battery to a consumer during a time period when a power saving request is made, and the power consumption of the commercial power supply can be reduced.

JP2013-123280A JP2013-230051A

So far, each combines a peak cut mechanism using a storage battery and a demand response mechanism, and determines the discharge power amount for peak cut and the discharge power amount for demand response from the remaining charge of the storage battery. The method to do is not considered.
Accordingly, the present invention appropriately determines the amount of discharge power for peak cut and the amount of discharge power for demand response when a combination of a peak cut mechanism using a storage battery and a demand response mechanism, respectively. An object is to provide a power management method.

  The power control method according to the present invention discharges a storage battery and supplies power to a load group used by a group of consumers consisting of one or more consumers, thereby reducing the amount of power supplied from a commercial power source to the load group. A power management method performed in a power management system to adjust, acquiring power demand of the consumer group, specifying a time zone in which the power demand exceeds a predetermined threshold as a first time zone, When an administrator receives a power saving request for reducing the amount of power supplied from a commercial power source to a consumer group, the time zone requested to be deleted is identified as a second time zone, and the storage battery Based on the remaining charge amount, a first discharge power amount to be discharged in the first time zone and a second discharge power amount to be discharged in the second time zone are determined, and the first time zone Discharging the first discharge energy to the storage battery, Said two time periods second discharge power amount is discharged to the storage battery, characterized in that.

  According to the power control method of the present invention, when a peak cut mechanism using a storage battery and a demand response mechanism are combined, the discharge power amount for peak cut and the discharge power amount for demand response are combined. Can be determined appropriately.

The figure which shows an example of an electric power supply service. 1 is a configuration diagram of a power management system 1 according to a first embodiment. 4 is a flowchart showing a basic operation of the power management apparatus 100. The flowchart which shows the specific operation | movement of the charging / discharging table preparation by the charging / discharging plan part 140. FIG. (A) An example of a prediction result of power demand, (b) An example of a charge / discharge table. The flowchart which shows operation | movement when the power saving request | requirement of the power management apparatus 100 is received. The flowchart which shows the specific operation | movement of the charging / discharging table update by the charging / discharging plan part 140. FIG. (A) An example of the prediction result of an electric power demand, (b) An example of the updated charging / discharging table. (A) An example of the prediction result of an electric power demand, (b) An example of the updated charging / discharging table. (A) An example of the prediction result of an electric power demand, (b) An example of the updated charging / discharging table. FIG. 6 illustrates a modification example of Embodiment 1; An example of a power saving request made by an electric power company. The block diagram of the power management system 2 of Embodiment 2. FIG. The figure which shows a further example of an electric power supply service. An example of the initial setting of the door-to-door storage battery system 50. The block diagram of the power management apparatus 200 of Embodiment 2. FIG. 5 is a flowchart showing a basic operation of the power management apparatus 200. The flowchart which shows operation | movement at the time of receiving the power-saving request | requirement of the power management apparatus 200. FIG. FIG. 9 illustrates a modification example of Embodiment 2; FIG. 5 is a schematic diagram of a power management system 3 according to a third embodiment. The block diagram of the management server 300 of Embodiment 3, and the power management apparatus 400. FIG. The sequence chart which shows operation | movement of the management server 300 and the power management apparatus 400. FIG. FIG. 6 is a schematic diagram of a power management system 4 of a fourth embodiment. (A) And (b) An example of the process with respect to the power shortage of the power management apparatus 500. FIG. Outline diagram of power management system 5 according to Embodiment 5 (A) An example of a user plan table, (b) An example of a device plan table The flowchart which shows operation | movement of the setting part 97 of the storage battery system 90. (A) and (b) Display example of storage battery system 90 or administrator terminal (A) and (b) Display example of storage battery system 90 or administrator terminal (A) An example of the content of the power saving request notified from the electric power company, (b) An example of the charge / discharge table, (c) An example of the updated charge / discharge table Configuration diagram of power management apparatus 600

(Background to the present invention)
When the inventors are considering a combination of a peak cut mechanism using a storage battery and a demand response mechanism, the discharge power amount and demand for peak cut are determined according to the remaining charge of the storage battery. I realized that it may not be enough to simply determine the amount of discharge power for response.

  For example, consider a situation in which a time period in which the power demand exceeds a predetermined threshold comes after the time period when the power saving request is made. In such a situation, as a result of discharging the storage battery in the time zone when the power saving request is made, it is not possible to obtain the discharge power amount of the storage battery necessary for the peak cut in the time zone in which the power demand exceeds the predetermined threshold. Things can happen. This is not desirable for customers who want to lower their basic rates by peak cuts rather than receiving incentives by responding to power saving requests. The reverse is also true.

Therefore, the inventors said that it is important to provide a method for appropriately determining the amount of discharge power for peak cut and the amount of discharge power for demand response according to the remaining charge of the storage battery. Recognized.
Hereinafter, in the embodiment and the modification, a method for appropriately determining the amount of discharge power for peak cut and the amount of discharge power for demand response according to the remaining charge of the storage battery will be described.

<< 1. Embodiment 1 >>
In the power management method of the first embodiment, the power management device manages the charge / discharge of the storage battery and adjusts the amount of power supplied from the commercial power source to the consumer.
FIG. 1 is a diagram illustrating an example of a power supply service in which the power management method according to the first embodiment is used.

In the power supply service shown in FIG. 1, the power company supplies the power from the commercial power source to the load group used by the consumer. This load group includes a storage battery system, and the storage battery system charges power supplied from a commercial power source and discharges the charged power to another load group used by a consumer.
In addition, the consumer pays the electric power company an electricity fee determined from a basic fee and an electricity usage fee corresponding to the amount of electricity used. Here, it is assumed that the basic charge is determined by the peak of the amount of power consumed by the commercial power source by the consumer in a predetermined period in the past. In order to suppress the peak of the power consumption, the power management apparatus 100 performs peak cut for discharging the storage battery system 10.

In addition, the electric power company makes a power saving request to the consumer. In response to the power saving request, the power management apparatus 100 discharges the storage battery system 10 to reduce the power consumption of the commercial power supply by the consumer. Consumers receive incentive payments from electric power companies in accordance with reductions in power consumption.
<1-1 configuration>
FIG. 2 is a configuration diagram of the power management system 1 including the power management apparatus 100 and the storage battery system 10 described above.

The power management system 1 shown in FIG. 2 includes a storage battery system 10, a load group 15, a power meter 20, and a power management device 100. In the power management system 1, power is supplied from a commercial power source to the storage battery system 10 and the load group 15.
The storage battery system 10 includes a control unit 11 and a storage battery 12, charges power supplied from a commercial power supply, and supplies the charged power to the load group 15.

The control unit 11 has a function of controlling charging / discharging of the storage battery 12 according to the charging / discharging table provided from the power management apparatus 100.
The power meter 20 is connected to the power distribution network upstream of the storage battery system 10, measures the amount of power supplied from the commercial power source to the consumer, that is, the power usage of the commercial power source, and periodically sends the measurement result to the power management apparatus 100. It has a function to provide automatically.

The power management apparatus 100 includes a power data acquisition unit 110, a power demand prediction unit 120, a power saving request reception unit 130, a charge / discharge planning unit 140, and a database 150, and manages charging / discharging of the storage battery system 10.
The power data acquisition unit 110 has a function of periodically acquiring a measurement result of the power meter 20 (hereinafter referred to as power data) and outputting the result to the power demand prediction unit 120.

The power demand prediction unit 120 is a function that predicts and acquires the power demand of the load group 15 based on the history information of the power data output from the power data acquisition unit 110 and the charging / discharging history information of the storage battery system 10. Have
The prediction of the power demand of the load group 15 is based on the history information of the power data output from the power data acquisition unit 110 and the charge / discharge history information of the storage battery system 10, for example. This is done by calculating history information and analyzing the history information of the calculated power consumption of the load group 15.

  The power data is a measurement result of the power meter 20 provided in the power distribution network upstream of the storage battery system 10 and indicates the amount of power supplied from the commercial power source to the storage battery system 10 and the load group 15. Therefore, when the storage battery system 10 is not charging / discharging, the measurement result of the power meter 20 indicates the amount of power used by the load group 15. Further, when the storage battery system 10 is charged, electric power is supplied to the storage battery system 10 from a commercial power source. Therefore, the measurement result of the power meter 20 at the time of charging the storage battery system 10 indicates a value obtained by combining the power usage amount of the storage battery system 10 and the power usage amount of the load group 15. Therefore, the power usage amount of the load group 15 at the time of charging the storage battery system 10 can be calculated by subtracting the charging power amount of the storage battery system 10 from the measurement result of the power meter 20. Further, when the storage battery system 10 is discharged, power is supplied to the load group 15 from each of the commercial power supply and the storage battery system 10. Therefore, the power usage amount of the load group 15 at the time of discharging of the storage battery system 10 can be calculated by adding the discharge power amount of the storage battery system 10 to the measurement result of the power meter 20.

The charging / discharging history information of the storage battery system 10 may be acquired from the history information of the charging / discharging table stored in the database 150, or may be acquired by inquiring of the storage battery system 10.
Further, the power demand prediction unit 120 has a function of outputting a power demand prediction result to the charge / discharge planning unit 140 and outputting and storing power data used for power demand prediction in the database 150.

The power saving request receiving unit 130 has a function of receiving a power saving request from an electric power company and outputting the power saving request to the charge / discharge planning unit 140.
The power saving request from the electric power company is made by, for example, notifying the time zone for requesting power saving in advance using packet communication.
The charge / discharge planning unit 140 is based on the prediction result of the power demand output from the power demand prediction unit 120, the content of the power saving request output from the power saving request reception unit, and the remaining charge of the storage battery 12. The charging / discharging table is planned and a charge / discharge table is created. About the specific method of planning charging / discharging of the storage battery 12, it is the following <1-2. Operation>.

The charge / discharge planning unit 140 provides the created charge / discharge table to the storage battery system 10 and outputs the created charge / discharge table and the prediction result of the power demand used for creating the charge / discharge table to the database 150. Has a function to store the information.
The database 150 has a function of storing power data output from the power demand prediction unit 120, a charge / discharge table output from the charge / discharge planning unit 140, and a prediction result of power demand.

<1-2. Operation>
FIG. 3 is a flowchart showing the basic operation of the power management apparatus.
The power data acquisition unit 110 periodically acquires power data from the power meter 20, and outputs the acquired power data to the power demand prediction unit 120 (step S101).
Subsequently, the power demand prediction unit 120 is based on the power data acquired from the power data acquisition unit 110, the history information of the power data stored in the database 150, and the charging / discharging history information of the storage battery system 10. The power demand for a predetermined period of the load group 15 is predicted. Then, the power demand prediction unit 120 outputs the power demand prediction result to the charge / discharge planning unit 140, and outputs and stores the power data used for power demand prediction in the database 150 (step S102).

Subsequently, the charging / discharging planning unit 140 plans charging / discharging of the storage battery 12 for a predetermined period based on the prediction result of the power demand output from the power demand prediction unit 120 (step S103). . Detailed processing for creating the charge / discharge table will be described later with reference to FIGS. 4 and 5.
Subsequently, the charge / discharge planning unit 140 provides the charge / discharge table created in step S103 to the storage battery system 10, and also creates a database of the created charge / discharge table and the prediction result of the power demand used for creating the charge / discharge table. 150. The database 150 memorize | stores the charging / discharging table output from the charging / discharging plan part 140, and the prediction result of an electric power demand (step S104).

When the control unit 11 of the storage battery system 10 receives the provision of the charge / discharge table from the charge / discharge planning unit 140 in step S104, the control unit 11 controls the charge / discharge of the storage battery 12 according to the charge / discharge table.
Here, the process of creating the charge / discharge table in step S103 will be described with reference to FIGS.

FIG. 4 is a flowchart showing specific processing of step S103. FIG. 5A is a diagram illustrating an example of a prediction result of power demand by the power demand prediction unit 120, where the vertical axis represents power demand and the horizontal axis represents time. FIG. 5B is a diagram illustrating an example of a charge / discharge table created in the charge / discharge planning unit 140, and corresponds to FIG. 5A.
First, the charge / discharge planning unit 140 determines whether or not there is a time zone that exceeds the threshold in the power demand prediction result (step S111).

Here, the threshold value is set based on the basic charge of the electricity charge paid by the consumer to the electric power company, and the basic charge increases when the threshold value is exceeded.
In step S111, when there is a time zone exceeding the threshold (step S111: YES), the time zone is specified as a discharge time zone for peak cut (step S112). On the other hand, in step S111, if there is no time zone exceeding the threshold (step S111: NO), the process proceeds to step S114.

For example, in the prediction result of the power demand shown in FIG. 5A, the power demand exceeds the threshold in the time zone from 16:00 to 18:00. Therefore, the charge / discharge planning unit 140 specifies this time zone as a discharge time zone for peak cut.
After step S112, the charge / discharge planning unit 140 sets the amount of discharge power to be discharged in the discharge time period specified in step S112, that is, the amount of discharge power for peak cut greater than the difference between the power demand and the threshold value α. (KWh) is determined (step S113).

It is desirable that the discharge power amount α (kWh) for peak cut is determined so that the power demand is well below the threshold value.
After step S113, the charge / discharge planning unit 140 determines the charging time zone of the storage battery 12 (step S114). Specifically, even if the charging power amount of the storage battery 12 is added to the prediction result of the power demand, the time zone sufficiently lower than the threshold value used in the determination in step S111 is determined as the charging time zone of the storage battery 12.

For example, in the prediction result of the power demand shown in FIG. 5A, the power demand is low particularly in the time zone from 2:00 to 4:00, and the threshold value is sufficient even if the charging power amount of the storage battery 12 is added. Below. Therefore, the charge / discharge planning unit 140 determines, for example, this time zone as a charging time zone for charging the storage battery 12.
FIG. 6 is a flowchart illustrating the operation of the power management apparatus 100 when a power saving request is received.

When the power saving request accepting unit 130 accepts the power saving request from the power company, the power saving request receiving unit 130 outputs the content of the power saving request to the charge / discharge planning unit 140 (step S201: YES).
The charge / discharge planning unit 140 receives the output of the power saving request from the power saving request receiving unit 130, and acquires the charge / discharge table from the database 150 (step S202).
Subsequently, the charge / discharge planning unit 140 updates the charge / discharge table acquired in step S202 based on the content of the power saving request and the remaining charge of the storage battery 12 (step S203). Detailed processing for updating the charge / discharge table will be described later with reference to FIGS.

Subsequently, the charge / discharge planning unit 140 provides the charge / discharge table updated in step S <b> 203 to the storage battery system 10 and outputs it to the database 150. The database 150 stores the updated charge / discharge table (step S204).
When receiving the updated charge / discharge table from the charge / discharge planning unit 140 in step S <b> 204, the control unit 11 of the storage battery system 10 controls the charge / discharge of the storage battery 12 according to the updated charge / discharge table.

Here, the process which updates a charging / discharging table in step S203 is demonstrated using FIGS.
FIG. 7 is a flowchart showing specific processing of step S203. FIG. 8A, FIG. 9A, and FIG. 10A are diagrams illustrating an example of a prediction result of power demand by the power demand prediction unit 120. The vertical axis represents power demand, and the horizontal axis Represents time. FIGS. 8B, 9B, and 10B are diagrams showing an example of the charge / discharge table created in the charge / discharge planning unit 140. FIGS. 8A, 9A ) And FIG. 10 (a), respectively. In step S202, the charge / discharge table shown in FIG. 4B is acquired.

First, the charge / discharge planning unit 140 identifies a discharge time zone for demand response from the content of the power saving request output from the power saving request receiving unit 130 (step S211).
Subsequently, the charge / discharge planning unit 140 refers to the acquired charge / discharge table, and refers to a time zone between a discharge time zone for demand response and a discharge time zone for peak cut (hereinafter referred to as gap time). .) Is determined (step S212).

In step S212, when there is no gap time (step S212: NO), the charge / discharge planning unit 140 discharges the previous time in the discharge time zone for peak cut and the discharge time zone for demand response. The remaining charge amount of the storage battery at the start time of the time zone is estimated (step S213).
The estimation of the remaining charge is performed by the following method, for example. First, the charge / discharge planning unit 140 acquires the remaining charge of the storage battery 12 at the time of processing in step S213 by inquiring the storage battery system 10. Moreover, the increase / decrease in the charge remaining amount of the storage battery 12 from the process time of step S213 to the start time of the discharge time zone before the above-described time is estimated based on the charge / discharge table acquired in step S202. And the target charge remaining amount is estimated from the charge remaining amount of the storage battery 12 in the process time of step S213 and the increase / decrease in the estimated charge remaining amount of the storage battery 12.

After step S213, the charge / discharge planning unit 140 determines the amount of discharge power (kWh) for demand response (the remaining charge estimated in step S213) so that the amount of discharge power for peak cut does not become insufficient. -Α) (step S214).
For example, in the specific example of FIG. 8, it is assumed that the power management apparatus 100 requests power saving in step S201 to reduce the power usage of the commercial power source during the time period from 14:00 to 16:00. At this time, the charge / discharge planning unit 140 identifies the time zone from 14:00 to 16:00 as a discharge time zone for demand response (step S211). Since there is no gap time (step S212: NO), the remaining charge of the storage battery 12 at time 14:00, which is the start time of the discharge time zone for demand response, is estimated (step S213). Then, the amount of discharge power for demand response is determined as ((charge remaining amount of storage battery 12 at time 14:00) −α) (step S214).

  In addition, as shown in the specific example of FIG. 9, the case where the discharge time zone for demand response and the discharge time zone for peak cut partially overlap is assumed. The maximum output of the storage battery 12 is determined by the performance of the power conditioner provided in the storage battery system 10. Therefore, there is a possibility that a sufficient amount of discharge power for demand response cannot be secured between the time 16:00 and 17:00 when the power saving request time zone and the peak cut time zone overlap. In such a case, the amount of discharge power in the time zone from 15:00 to 16:00 and the amount of discharge power in the time zone from 16:00 to 17:00 in the time zone for requesting power saving Alternatively, the discharge power amount of the entire power saving request time period may be determined to be (approaching ((remaining charge amount of storage battery 12 at time 15:00)) − α).

Returning to FIG. 7, the description will be continued.
In step S212, when there is a gap time (step S212: YES), the charge / discharge planning unit 140 determines whether gap charging is possible in at least a part of the gap time zone (step S212). S215).
Specifically, if there is a time zone that does not exceed the threshold (FIG. 4: step S111) used in the peak cut even if the charging power amount of the storage battery 12 is added to the predicted power demand within the gap time, It is determined that gap charging is possible during that time period. On the other hand, if there is no time zone that does not exceed the threshold, it is determined that gap charging is not possible.

  In the process of step S114 included in the process of step S103 for creating the charge / discharge table (FIG. 4), the threshold used in the determination of step S111 even if the charged power amount of the storage battery 12 is added to the predicted power demand. It has been described that the time zone sufficiently lower than the above is determined as the charging time zone of the storage battery 12. When the process of step S114 is compared with the process of step S215, the degree of falling below the threshold when the charged power amount of the storage battery 12 is added to the predicted power demand may be smaller in the process of step S215. . In the process of step S215, the gap charging is facilitated by reducing the degree below the threshold, and it is possible to discharge a larger amount of power to the storage battery in order to save power.

In step S215, if charging / discharging is possible (step S215: YES), the charge / discharge planning unit 140 determines to perform gap charging at the time determined to be possible (step S216). On the other hand, if gap charging is not possible (step S215: NO), the process proceeds to step S213.
After step S216, the charge / discharge planning unit 140 estimates the amount of charging power charged by the gap charging determined in step S216 (step S217).

The charging power amount of the gap charging is estimated based on, for example, the charging power amount per unit time of the storage battery and the time for performing the gap charging.
Subsequently, the charge / discharge planning unit 140 estimates the remaining charge of the storage battery at the start time of the previous discharge time zone in the discharge time zone for peak cut and the discharge time zone for demand response. (Step S218). The method for estimating the remaining charge is the same as in step S213.

  Subsequently, the charge / discharge planning unit 140 determines the demand response based on the charge power amount charged by the gap charge estimated in step S217, the remaining charge amount estimated in step S218, and the discharge power amount for peak cut. Determine the amount of discharge power for. Specifically, the discharge power amount (kWh) for demand response is set to ((charge power amount charged by gap charging estimated in step S217 + step so that the peak cut discharge power amount is not short). (Remaining charge estimated in S218) −α) (step S219). Note that (the amount of charging electric power charged by gap charging estimated in step S217 + the remaining charge estimated in step S218) is the time in the discharge time zone for peak cut and the discharge time zone for demand response. This is an estimated value of the remaining charge of the storage battery at the start time of the later discharge time zone.

For example, in the specific example of FIG. 10, it is assumed that the power management apparatus 100 has requested power saving in step S201 to reduce the power consumption of the commercial power source during the time period from 11:00 to 13:00.
At this time, the charge / discharge planning unit 140 identifies the time zone from 15:00 to 17:00 as the discharge time zone for demand response (step S211). Since there is a gap time (step S212: YES), it is determined whether or not gap charging is possible (step S215). In this specific example, the power demand during the time period from 13:00 to 14:00 is low, and even if the charging power amount of the storage battery 12 is added, it is well below the threshold value. S215: YES). At this time, the charge / discharge planning unit 140 determines to perform gap charging in the time zone from 13:00 to 14:00 (step S216), and estimates the amount of charging power charged by the gap charging (step S217). ), The remaining charge of the storage battery at time 11:00, which is the start time of the power saving request time zone, is estimated (step S218). Then, the amount of discharge power for demand response is expressed as ((amount of power charged by gap charging performed in the time zone from 13:00 to 14:00) + (remaining charge amount of the storage battery at the time of 11:00) ))-Α.

8 to 10 exemplify the case where there is a peak cut time zone after the power saving request time zone, but the same method can be used when there is a power saving request time zone after the peak cut time zone. The charge / discharge table of the storage battery 12 can be updated.
According to the power management method of the present embodiment, the amount of power supplied from the commercial power source to the consumer by discharging a larger amount of power from the storage battery for demand response while securing the peak cut discharge power amount. It becomes possible to reduce more. In addition, the consumer can obtain an incentive according to the reduction in the amount of power supplied from the commercial power supply while covering the power consumption of the load group with the power of the storage battery.

<1-3. Supplement>
In the first embodiment, the discharge power amount for demand response is determined after securing the discharge power amount for peak cut. However, the power management method of the first embodiment is not limited to this. The discharge power amount for peak cut may be determined after securing the discharge power amount for demand response.

  Specifically, in step S213 of FIG. 7, the discharge power amount for demand response is determined to be β (kWh) so as to satisfy the power reduction requested in the power saving request. And what is necessary is just to change the discharge electric energy for a peak cut from (alpha) (kWh) to (remaining charge-(beta)). Similarly, in step S216 in FIG. 7, the discharge power amount for demand response is determined as β (kWh), and the discharge power amount for peak cut is determined from α (kWh) (by (remaining charge + gap charge). What is necessary is just to change to charge electric energy)-(beta).

  In the above embodiment, an example is given in which the electric power company performs notification of a time zone for requesting power saving as a power saving request. However, not only the time zone notification but also a specific power reduction target or discharge power of the storage battery is given. It is assumed that the amount will be notified. In such a case, the discharge power amount β (kWh) for demand response may be determined so as to satisfy the power reduction target and the discharge power amount of the storage battery.

  Whether to preferentially determine the discharge power amount of the storage battery for the peak cut first or to preferentially determine the discharge power amount of the storage battery for the power saving request may be determined according to the profit obtained by the consumer. . In other words, the customer can use the profits obtained by performing peak cuts (for example, suppression of increases in basic charges) and the profits obtained by requesting power savings (for example, incentives obtained from electric power companies). You should give priority to those who have more profits.

<1-4. Modification>
In the first embodiment, the power management apparatus 100 plans to charge / discharge one storage battery system 10, but the power management apparatus 100 may plan to charge / discharge multiple storage battery systems 10.
FIG. 11 is a schematic diagram of the power management system 1A when the power management apparatus according to the above embodiment plans charging / discharging of a plurality of storage batteries.

A power management system 1A shown in FIG. 11 includes storage battery systems 10-1 ... 10-N, load groups 15-1 ... 15-N, power meters 20-1 ... 20-N, and a power management device 100A. Including. Note that N is an arbitrary number of 2 or more.
The power management apparatus 100A operates with the same configuration as the power management apparatus 100 of the above embodiment. However, 100 A of power management apparatuses acquire electric power data from each corresponding electric power meter 20-1 ... 20-N about storage battery system 10-1 ... 10-N, and electric power of each load group 15-1 ... 15-N. A demand is predicted and the charging / discharging table of each storage battery system 10-1 ... 10-N is created. Then, the power management apparatus 100A receives a power saving request corresponding to each of the storage battery systems 10-1... 10-N from the power company, and updates each charge / discharge table created in response to the power saving request.

FIG. 12 is a diagram illustrating an example of a power saving request notified to the power management apparatus 100A by the power company.
In the example shown in FIG. 12, for each of region A to region C, a time zone for requesting power saving is shown. When the power management apparatus 100A receives such a power saving request, the power management apparatus 100A holds information indicating the area in which each storage battery is provided in advance and associated with the area information in FIG. Then, the power management apparatus 100A specifies the storage battery system corresponding to the power saving request based on the area information, and specifies the discharge time based on the power saving request time information.

Note that, for example, the power supply service described in FIG. 1 is assumed to be provided by an intermediary (aggregator) that mediates between the power company and the customer. The power management apparatus 100A may be realized as a server apparatus of such an intermediary.
≪2. Second Embodiment >>
There are various services for supplying power to consumers. One of them is a high-voltage lump company that purchases commercial power from a high-voltage lump and provides it to residents in apartment buildings. The present embodiment 2 is a power management method that assumes such a case, where the power management device manages charging / discharging of one or more storage batteries, and is a consumer group consisting of a plurality of consumers from a commercial power source. The amount of power supplied to the is adjusted.

Hereinafter, the power management method of the second embodiment will be described with reference to the drawings. In the second embodiment, components and processing steps that perform substantially the same processes as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
<2-1. Configuration>
FIG. 13 is a diagram illustrating an example of the power management system 2 that uses the power management method of the present embodiment.

The power management system 2 shown in FIG. 13 is applied to an apartment house, and includes a load group 15-1 to 15 -N, a shared storage battery system 30, a main power meter 40, a door-to-door storage battery system 50-1 to 50 -N, and a door-to-door power meter. 60-1 ... 60-N and the power management apparatus 200 are provided. Note that N is an arbitrary number of 2 or more.
In addition, you may be a structure provided with a storage battery system for every room in a home. In this case, the power management device may be provided in each home and the storage battery system in each room may be managed. Moreover, the structure which manages a power management apparatus hierarchically may be sufficient.

FIG. 14 is a diagram illustrating an example of a power supply service in which the power management method according to the second embodiment is used.
In the power supply service shown in FIG. 14, the power company supplies the power from the commercial power source to the high-voltage package business. The high-voltage lump business operator receives the power from the commercial power supply in a high-voltage lump, performs a voltage drop process, and provides it to the entire apartment house.

  Moreover, the shared storage battery system 30 charges the electric power supplied from the commercial power supply via the high-voltage collective business operator and discharges it to the consumer group of the apartment house. Moreover, the door-to-door storage battery system 50 charges the electric power supplied from the commercial power supply via the high-voltage collective business operator and supplies the electric power to the load group 15 of the consumer in which the door-to-door storage battery system 50 is provided. In addition, in the load group 15 of the consumer in which the door-to-door storage battery system 50 is provided, when the electric power discharged from the door-to-door storage battery system is not consumed, the electric power shall be distributed to the whole apartment house.

In addition, the high-voltage collective business operator pays the electric power company an electricity fee determined from a basic fee and a power usage fee according to the power usage of the entire apartment house. The consumer then pays the high-voltage lump-sum supplier an electric charge determined from the basic charge according to the electricity charge paid by the high-voltage lump-sum supplier to the power company and the power usage fee according to the power consumption of the consumer. .
Here, it is assumed that the basic fee paid to the electric power company by the high voltage lump-sum supplier is determined based on the peak power supplied from the commercial power source to the consumer. And in order to suppress that this peak electric power becomes high, the power management apparatus 100 discharges the shared storage battery system 30 and the door-to-door storage battery system 50.

  In addition, the power company makes a power-saving request to the high-voltage lump-sum supplier. In response to the power saving request, the power management apparatus 100 discharges the shared storage battery system 30 and the door-to-door storage battery system 50, thereby reducing the power supplied from the commercial power source. Then, the high-voltage collective business operator receives incentive payment from the power business company according to the reduction amount of the power supplied from the commercial power source in the entire apartment house. And a consumer receives incentive payment from a high voltage lump trader according to the reduction amount by the individual consumer of the electric power supplied from commercial power.

Returning to FIG.
The shared storage battery system 30 is connected upstream of a branch point to each residence in a power distribution network from a commercial power source to an apartment house. The shared storage battery system 30 includes a control unit 31 and a shared storage battery 32, charges power supplied from a commercial power source, and supplies the charged power to the entire apartment house.

The control unit 31 of the shared storage battery system 30 has a function of controlling charging / discharging of the storage battery according to the charging / discharging table provided from the power management apparatus 200.
The main power meter 40 is connected to the power distribution network upstream of the shared storage battery system 30, measures the amount of power supplied from the commercial power source to the entire apartment house (the amount of power used by the entire apartment house), and manages the measurement results as power management. It has a function of periodically providing to the apparatus 200.

  The door-to-door storage battery system 50 is connected downstream of a branch point to each residence in a power distribution network from a commercial power source to an apartment house. The door-to-door storage battery system 50 includes a control unit 51 and a door-to-door storage battery 52, charges electric power supplied from a commercial power source, and supplies the charged electric power to a load group of each residential unit. Further, the door-to-door storage battery system 50 is configured such that when the power discharged from the door-to-door storage battery system 50 is not consumed by a load group provided downstream of the power distribution network, or the amount of discharge per unit time consumed by the load group is When it falls below a predetermined threshold, surplus electricity to be discharged is supplied to the entire apartment house.

Further, it is assumed that each of the door-to-door storage battery systems 50 is set for discharge for peak cut or demand response as an initial setting. The initial settings of each of the door-to-door storage battery systems 50 are stored in a database 250 of the power management apparatus 200 described later, and are used to create a charge / discharge table for each of the door-to-door storage batteries 52.
FIG. 15 is an example of initial setting information for each of the door-to-door storage battery systems 50.

  The initial setting information shown in FIG. 15 includes information indicating whether or not each of the individual storage battery systems 50 is discharged for the peak cut, the maximum value of the discharge electric energy that can be discharged for the peak cut, and the discharge possible It includes information indicating time, information indicating whether or not to discharge for demand response, and information indicating the maximum value of discharge electric energy that can be discharged for demand response and dischargeable time.

In addition, the initial setting set to each door-to-door storage battery system 50 is not limited to this. For example, a time zone in which discharge is allowed may be set without distinguishing between discharge for peak cut and discharge for demand response. Further, a maximum value of dischargeable electric energy that can be discharged in a time zone that allows discharge may be set.
The control unit 51 of the door-to-door storage battery system 50 has a function of controlling charge / discharge of the storage battery according to the charge / discharge table provided from the power management apparatus 200.

The door-to-door power meter 60 is connected to the power distribution network downstream of the branch point to each residence and upstream of the door-to-door storage battery system 50 in the power distribution network from the commercial power source to the apartment house. And it has the function to measure the electric energy supplied to the household storage battery system 50 and the load group 15 of each residence from a commercial power source.
FIG. 16 is a diagram illustrating a configuration of the power management apparatus 200.

The power management apparatus 200 is obtained by replacing the charge / discharge planning unit 140 with the charge / discharge planning unit 240 and replacing the database 150 with the database 250 in the power management apparatus 100 of the first embodiment.
However, the power data acquisition unit 110 of the power management apparatus 200 acquires power data from the main power meter 40 instead of the power meter 20 in the power management system 1 of the first embodiment, and uses the acquired power data as power demand. Output to the prediction unit 120.

Then, the power demand prediction unit 120 of the power management apparatus 200 loads the load data based on the history information of the power data output from the power data acquisition unit 110 and the charge / discharge history information of the shared storage battery system 30 and the individual storage battery system 50. The power demand of the groups 15-1 to 15-N is predicted and acquired.
The charge / discharge planning unit 240 has a function of planning charge / discharge for each of the shared storage battery 32 and the door-to-door storage battery 52 and creating a charge / discharge table. About the detailed method of planning charge / discharge of each of the shared storage battery 32 and the door-to-door storage battery 52, the following <2-2. Operation>.

Further, the charge / discharge planning unit 240 has a function of providing each of the created charge / discharge tables for each of the shared storage battery system 30 and the door-to-door storage battery system 50. In addition, the charge / discharge planning unit 240 has a function of outputting and storing each of the created charge / discharge tables and the prediction result of the power demand used for creating the charge / discharge table in a database.
The database 250 is similar to the database 150 in the power management apparatus 100 of the above embodiment, the power data output from the power demand prediction unit 120, the charge / discharge table and the power demand output from the charge / discharge planning unit 140 described later. Has a function of storing the prediction result. However, the database 250 stores the charge / discharge tables of the shared storage battery 32 and the individual storage battery 52.

Further, the database 250 has a function of storing initial setting information (for example, FIG. 15) that is set in advance in each of the door-to-door storage battery systems 50 that is used for the charge / discharge plan of the charge / discharge planning unit 240. It is assumed that the initial setting information is stored in the database 250 in advance.
<2-2. Operation>
FIG. 17 is a flowchart showing the basic operation of the power management apparatus 200.

Since the processing in steps S101 and S102 is the same as that in the first embodiment, description thereof is omitted.
The power data acquisition unit 110 periodically acquires power data from the main power meter 40, and outputs the acquired power data to the power demand prediction unit 120 (step S101A).
Subsequently, the power demand prediction unit 120 includes the power data acquired from the power data acquisition unit 110, the history information of the power data stored in the database 150, the shared storage battery system 30 and the individual storage battery systems 50-1,. Based on the charging / discharging history information of each N, the power demand of the load groups 15-1 to 15 -N for a predetermined period is predicted. Then, the power demand prediction unit 120 outputs the power demand prediction result to the charge / discharge planning unit 240, and outputs and stores the power data used for the power demand prediction in the database 250 (step S102A). In step S102A, the power demand for a predetermined period of the load groups 15-1... 15-N is predicted using the same method as in step S102 of the first embodiment.

  Subsequently, the charge / discharge planning unit 240 regards the shared storage battery 32 and the door-to-door storage batteries 52-1 to 52-N as one virtual storage battery, and based on the prediction result of the power demand output from the power demand prediction unit 120. Then, a charge / discharge table for a predetermined period of the virtual storage battery is created (step S301). In this step S301, the virtual storage battery charge / discharge table is created using the same method as in step S103 of the first embodiment.

Subsequently, the charge / discharge planning unit 240 charges the predetermined period of each of the shared storage battery 32 and the individual storage battery 52 based on the virtual storage battery charge / discharge table created in step S301 and the initial setting information of each individual storage battery system 50. A charge / discharge table is created by planning the discharge (step S302).
Specifically, in step S <b> 302, the charge / discharge planning unit 240 determines a charge time zone in the charge / discharge table of the virtual storage battery as a charge time zone for each of the shared storage battery 32 and the individual storage battery 52. Further, for each of the individual storage batteries 52-1 to 52 -N, the peak cut determined by the charge / discharge table of the virtual storage battery with reference to the setting information about the discharge for peak cut included in the initial setting information of the individual storage battery 52. It is determined whether or not to discharge in the discharge time zone. And the discharge electric energy for the peak cut determined by the charging / discharging table of the virtual storage battery is allocated to the individual storage battery 52 and the shared storage battery 32 determined to be discharged. In addition, when the amount of discharge power for peak cut determined by the charge / discharge table of the virtual storage battery can be covered only by the remaining charge amount of the shared storage battery 32, the discharge power amount may not be assigned to the individual storage battery 52.

  Subsequently, the charge / discharge planning unit 240 provides each of the charge / discharge tables created in step S <b> 302 to the shared storage battery system 30 and the door-to-door storage battery system 50. Then, each of the created charge / discharge tables and the prediction result of the power demand used for creating the charge / discharge tables are output to the database 250. The database 250 stores each charge / discharge table output from the charge / discharge planning unit 240 and the prediction result of power demand (step S303).

When the control unit 31 of the shared storage battery system 30 and the control unit 51 of each of the door-to-door storage battery systems 50 receive provision of the charge / discharge table from the charge / discharge planning unit 240 in step S303, the charging / discharging of each storage battery is performed according to the charge / discharge table. Control the discharge.
FIG. 18 is a flowchart illustrating the operation of the power management apparatus 200 when a power saving request is received.

Since the processing in step S201 is the same as that in the first embodiment, description thereof is omitted.
In step S401, the charge / discharge planning unit 240 receives the output of the power saving request from the power saving request receiving unit 130, and acquires the charge / discharge table of the shared storage battery 32 and the individual storage battery 52 from the database.
Subsequently, the charge / discharge planning unit 240 restores the charge / discharge table of the virtual storage battery created in step S301 of FIG. 17 based on the charge / discharge table of the shared storage battery 32 and the door-to-door storage battery 52 acquired in step S401 (step S402). ). Specifically, the virtual storage battery charge / discharge table is restored by regarding each charge / discharge plan of the shared storage battery 32 and the door-to-door storage battery 52 as one virtual storage battery charge / discharge plan.

Subsequently, the charge / discharge planning unit 240 updates the charge / discharge table of the virtual storage battery restored in step S402 based on the content of the power saving request and the remaining charge of the virtual storage battery (step S403).
Specifically, in step S403, the charge / discharge planning unit 240 refers to the setting information about the discharge for demand response included in the initial setting information for each of the individual storage batteries 52-1,. 52-1... 52 -N, each of which determines a door-to-door storage battery to be discharged in a demand response time zone. Then, the determined remaining charge of the door-to-door storage battery 52 and the shared storage battery 32 is specified as the remaining charge of the virtual storage battery. Then, the charge / discharge table of the virtual storage battery is updated based on the content of the power saving request and the specified remaining charge amount. The update of the charge / discharge table of the virtual storage battery is performed using the same method as the update of the charge / discharge table of the storage battery system in step S203 of the first embodiment.

Subsequently, the charge / discharge planning unit 240 determines whether the shared storage battery 32 and the individual storage battery 52 acquired in Step S401 are based on the virtual storage battery charge / discharge table updated in Step S403 and the initial setting information of each individual storage battery system 50. Update the charge / discharge table. (Step S404).
Specifically, in step S404, the charge / discharge planning unit 240 determines the gap charging time in the virtual storage battery charging / discharging table for each of the door-to-door storage battery 52 and the shared storage battery 32 that are discharged in the demand response time zone. If this happens, the time zone is determined as the charging time zone. Furthermore, the amount of discharge power for demand response determined in the charge / discharge table of the virtual storage battery is assigned to each of the door-to-door storage battery 52 and the shared storage battery 32 that are discharged in the demand response time zone.

  Subsequently, the charge / discharge planning unit 240 provides each of the charge / discharge tables updated in step S <b> 404 to the shared storage battery system 30 and the door-to-door storage battery system 50. Then, each updated charge / discharge table is output to the database 250. The database 250 stores each charge / discharge table output from the charge / discharge planning unit 240 (step S405).

When the control unit 31 of the shared storage battery system 30 and the control unit 51 of each of the door-to-door storage battery systems 50 receive provision of the charge / discharge table updated from the charge / discharge planning unit 240 in step S405, the control unit 31 follows the updated charge / discharge table. The charging / discharging of each storage battery is controlled.
According to the power management method of the second embodiment, in a housing complex or the like, a shared storage battery that supplies power to a plurality of consumers, and a door-to-door storage battery that is owned or mainly used by a consumer individual is a virtual storage battery. As a result, peak cut and demand response can be realized. In addition, it is possible to flexibly use the remaining charge of each storage battery in accordance with the needs of consumers.

<2-3. Modification>
As shown in FIG. 19, the power management apparatus 200A according to the second embodiment has a plurality of storage battery systems that each group has a plurality of storage battery systems, and a virtual storage battery system. In view of this, charging / discharging of a plurality of storage battery systems may be planned.

  In FIG. 19, group A, which is an apartment house, has a shared storage battery system 30A and door-to-door storage battery systems 50A-1... 50A-X, and the storage batteries of these storage battery systems are regarded as one virtual storage battery A. Moreover, the group B which is an apartment house has the separate storage battery system 50B-1 ... 50B-Y, and the storage battery of these storage battery systems is regarded as one virtual storage battery B. Group C has storage battery systems 10C-1... 10C-Z, and the storage batteries of these storage battery systems are regarded as one virtual storage battery C. Each of storage battery systems 10C-1... 10C-Z may be, for example, a storage battery system shared by a group of customers in region X or a storage battery system held by each of customers in region X. X, Y, and Z are each an arbitrary number of 2 or more.

  The power management apparatus 200A has the same configuration as the power management apparatus 200 of the above embodiment and operates in the same manner. However, the power management apparatus 100A acquires power data from each of the main power meters 40 corresponding to the groups A to C, predicts the power demand of each of the groups A to C, and charges / discharges the virtual storage batteries A to C. Create a table. Then, the power management apparatus 100A receives a power saving request corresponding to each of the groups A to C from the power company, and updates each charge / discharge table created in response to the power saving request.

<2-4. Supplement>
Although the power management system 2 of the said Embodiment 2 mentioned as an example the case where it is used in an apartment house, it is not limited to an apartment house, but in various cases where a plurality of storage batteries are used as one virtual storage battery. Is available. For example, in a certain home, the power management device may plan charging / discharging of a plurality of storage batteries by regarding a plurality of storage batteries provided for each room as one virtual storage battery. Moreover, it is good also as a system in which the electric power management apparatus which plans charging / discharging of the storage battery of each room is provided for every residence part of an apartment house, and the whole storage battery provided in an apartment house is managed hierarchically.

≪3. Embodiment 3 >>
As in the power management method of the second embodiment, the power management method of the third embodiment regards a plurality of storage battery systems as one virtual storage battery system, and plans charge / discharge for peak cut and demand response. To do. However, in the second embodiment, the power management apparatus plans charging / discharging of the virtual storage battery for peak cut and demand response, whereas in the power management method of the third embodiment, the power management apparatus has a peak. The charging / discharging of the virtual storage battery for cutting is planned, and the management server plans the charging / discharging of the virtual storage battery for demand response. According to the power management method of the third embodiment, the management server accepts power saving requests for a plurality of power management devices at once, and for each of the plurality of power management devices for demand response so as to satisfy the power saving request. It becomes possible to plan charging / discharging of the virtual storage battery.

Hereinafter, the power management method of the third embodiment will be described with reference to the drawings. In the third embodiment, components and processing steps that perform substantially the same processing as in the second embodiment are denoted by the same reference numerals, and description thereof is omitted.
<3-1. Configuration>
FIG. 20 is a diagram showing an overview of the power management system 3 in which the power management method of the third embodiment is used.

  The power management system 3 illustrated in FIG. 20 includes a management server 300, power management apparatuses 400-1 to 400-N, storage battery systems 10-1 to 10-N, and storage battery systems 10a-1 to 10a-M. Including. In the group described in the second embodiment (for example, an apartment house or a region), the power management device 400-1 and the storage battery system 10-1 ... 10-N, and the power management device 400-N and the storage battery system 10a-1 ... each of 10a-M shall be provided. N and M are arbitrary numbers of 2 or more.

In addition, you may be a structure provided with a storage battery system for every room in a home. In this case, the power management device may be provided in each home and the storage battery system in each room may be managed. Moreover, the structure which manages a power management apparatus hierarchically may be sufficient.
FIG. 21 is a configuration diagram of the management server 300 and the power management apparatus 400.
The management server 300 includes a storage battery information acquisition unit 310, a server database 320, a power saving request reception unit 330, and an update unit 340. The management server 300 plans charging / discharging of the virtual storage battery with respect to the demand response for each of the power management apparatuses 400-1 to 400-N.

The storage battery information acquisition part 310 acquires the charging / discharging table of the virtual storage battery which the power management apparatus 400 created from each of the power management apparatus 400-1 ... 400-N, and outputs the acquired charging / discharging table to the server database 320. Have
The server database 320 has a function of storing a charge / discharge table of each virtual storage battery output from the storage battery information acquisition unit 310 of each of the power management apparatuses 400-1 to 400 -N. Moreover, it has the function to memorize | store the initial setting information of each storage battery system which comprises a virtual storage battery about each virtual storage battery.

The power saving request receiving unit 330 has a function of receiving a power saving request from an electric power company and outputting the power saving request to the updating unit 340.
The update unit 340 includes a charge / discharge table for each virtual storage battery, contents of the power saving request output from the power saving request reception unit 330, and initial setting information for each of the storage battery systems constituting the virtual storage battery stored in the server database 320. It has the function to update based on. About the method of updating the charge / discharge table of the virtual storage battery, the following <3-2. Operation>.

The power management apparatus 400 is obtained by replacing the power saving request receiving unit 130 with the update receiving unit 430 and the charge / discharge planning unit 240 with the charge / discharge planning unit 440 in the power management apparatus 200 of the second embodiment.
The update reception unit 430 has a function of acquiring the updated virtual storage battery charge / discharge table of the virtual storage battery updated by the power saving request from the management server 300 and outputting the acquired charge / discharge table to the charge / discharge planning unit 440.

The charge / discharge planning unit 440 has a function of planning charge / discharge for each storage battery system 10 and creating a charge / discharge table. The detailed method for creating the charge / discharge table is described in <3-2. Operation>.
<3-2. Operation>
FIG. 22 is a sequence showing operations of the management server 300 and the power management apparatus 400.

First, the power management apparatus 400 performs processing (S101A, S102A, and S301 to S303) similar to the basic operation flow (FIG. 17) of the power management apparatus 200 of the second embodiment.
And after the process of step S301, the charging / discharging plan part 440 provides the charging / discharging table of the created virtual storage battery to the management server 300 (step S501).

The storage battery information acquisition unit 310 of the management server 300 receives the provision of the charge / discharge table of the virtual storage battery from the power management apparatus 400 and outputs it to the server database 320. The server database 320 stores a charge / discharge table of the virtual storage battery (step S502).
And the power saving request | requirement reception part 330 will output the power saving request | requirement to the update part 340, if the power saving request | requirement from an electric power provider is received (step S503: YES).

Subsequently, the update unit 340 includes, among the charge / discharge tables of the virtual storage batteries of the power management devices 400-1... 400-N stored in the server database 320,
A charge / discharge table of the virtual storage battery corresponding to the power saving request output from the power saving request receiving unit 330 is acquired (step S504). At this time, the update unit 340 performs <1-4. As described in Modification>, for example, the virtual storage battery corresponding to the power saving request is specified by referring to the information that associates the customer who made the power saving request with the virtual storage battery.

  Subsequently, the updating unit 340 updates the charge / discharge table of the virtual storage battery acquired in step S504 based on the content of the power saving request and the remaining charge of the virtual storage battery (step S505). The method of updating the charge / discharge table of the virtual storage battery in step S505 is the same as the method of updating the charge / discharge table of the storage battery in step S403 of the second embodiment.

Subsequently, the updating unit 340 provides the corresponding power management apparatus 400 with the charge / discharge table of the virtual storage battery updated in step S505 (S506).
When the charge / discharge planning unit 440 of the power management apparatus 400 receives the updated charge / discharge table of the virtual storage battery from the management server 300, the charge / discharge plan unit 440 performs the processes of steps S404 and S405. The processing of steps S404 and S405 is the same as that of the operation (FIG. 18) of the power management apparatus 200 of the second embodiment.

According to the power management method of the third embodiment, the management server accepts power saving requests for a plurality of power management devices at once, and for each of the plurality of power management devices for demand response so as to satisfy the power saving request. It becomes possible to plan charging / discharging of the virtual storage battery.
<3-3. Modification>
As shown in FIG. 12, it is assumed that a power saving request is made for each region, and a plurality of power management devices are provided in the region. In addition, as a power saving request from an electric power provider, it is assumed that not only the time zone for requesting power saving but also the amount of power to request reduction is notified.

  At this time, in the third embodiment, the management server 300 receives a power saving request made to the area A and identifies a plurality of virtual storage batteries corresponding to the area A. And discharge electric energy X '(kWh) discharged with the whole some virtual storage battery corresponding to the area A is determined so that the electric power reduction amount X (kWh) requested by the power saving request may be satisfied. Then, the determined discharge power amount X ′ may be assigned to a plurality of virtual storage batteries corresponding to the region A. In addition, when allocating the discharge power amount X ′ to a plurality of virtual storage batteries, a large amount of discharge power is allocated to a virtual storage battery having a sufficient remaining charge, and a small discharge power amount is allocated to a virtual storage battery having a small remaining charge. It is good. By assigning the discharge power amount X ′ in this way, for example, if the remaining charge amount of a virtual storage battery in the region A is small, it becomes possible for another virtual storage battery to compensate for it and perform discharge.

<< 4. Embodiment 4 >>
In the power management method of the first embodiment, the limited remaining charge amount of the storage battery system is distributed to the discharge power amount for peak cut and the discharge power amount for response to the power saving request. Therefore, for example, if priority is given to the discharge power amount for peak cut, the discharge power amount for demand response will be insufficient, and if priority is given to the discharge power amount for demand response, the discharge power amount for peak cut will be There is a risk that will run out.

Further, in the power management method of the first embodiment, the electric power demand is predicted and the discharge for peak cut is planned. However, the actual electric power demand becomes high against the prediction, and the peak cut may not be realized. is there.
In view of the above, in the power management method of the fourth embodiment, when the amount of discharge power is insufficient, an attempt is made to reduce the amount of power supplied from the commercial power supply to the consumer. Further, the amount of power supplied from the commercial power source is monitored, and even when a high power amount is measured against the prediction, an attempt is made to reduce the amount of power supplied from the commercial power source to the consumer.

Hereinafter, the power management method of the fourth embodiment will be described with reference to the drawings. In the fourth embodiment, components and processing steps that perform substantially the same processes as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
FIG. 23 is a configuration diagram of a power management system 4 that uses the power management method of the fourth embodiment.

The power management system 4 shown in FIG. 23 includes a storage battery system 10, a power meter 20, a meter monitoring device 70, a solar power generation system 80, and a power management device 500 according to the present embodiment.
The meter monitoring device 70 has a function of monitoring the measurement result of the power meter 20 and notifying the power management device when the measurement result exceeds a predetermined threshold.

The solar power generation system 80 has a function of supplying the generated power to consumers according to instructions from the power management apparatus. The solar power generation system may be configured to sell the generated power until an instruction from the power management apparatus is given.
The power management apparatus 500 is obtained by adding a power adjustment unit 510 to the configuration of the power management apparatus 100 of the first embodiment.

Based on the charge / discharge table created by the charge / discharge planning unit 140 and the notification regarding the measurement result of the power meter 20 from the meter monitoring device 70, the power adjustment unit 510 determines the amount of power supplied from the commercial power source to the consumer. Process to reduce.
FIG. 24A is a diagram illustrating an example of processing performed by the power adjustment unit 510 to reduce the amount of power supplied from the commercial power supply to the consumer.

As illustrated in FIG. 24A, the power adjustment unit 510 may perform, for example, off control of a power source of a load to be saved. The load to be saved may be such that, for example, the convenience of the user is not impaired by relatively turning off the power such as lighting equipment, air conditioning equipment, and air conditioning equipment, or may be preset by the user.
In addition, for example, for an electrical appliance having an eco mode that operates while suppressing power consumption, the power adjustment unit 510 may perform control to set the operation to the eco mode. In addition, when the lighting equipment can adjust the brightness stepwise, the power consumption may be suppressed by controlling the lighting equipment to be darkened by reducing the brightness. It is not limited to lighting equipment, and various equipment that operates in stages may be controlled to operate with reduced power consumption.

In addition, the power adjustment unit 510 may perform control to supply the power generated by the solar power generation system 80 to the load group, for example. The control is not limited to the solar power generation system 80, and power may be supplied from another power generation device or a power source to the load group.
In addition, the power adjustment unit 510 may, for example, perform a notification that prompts the user to save power.

According to the power management method of the fourth embodiment, when the amount of discharged power of the storage battery is insufficient or when the power demand increases against prediction, the load is controlled and the like, and the commercial power source is switched to the load group. It is possible to try to reduce the amount of power supplied.
In addition, you may apply the power management method of this Embodiment 4 also to an apartment house. When applied to an apartment house, for example, the power management apparatus may perform the processing shown in FIG. In the case of an apartment house, it is considered that the convenience of the user is not impaired by restricting the load of the common part, for example, the use of lighting equipment and air conditioning equipment, rather than restricting the use of the load of the residential part. Therefore, as shown in FIG. 24 (b), the power management device controls the lighting equipment and air conditioning equipment in the common part to turn off, and when the degree of shortage in the amount of discharge power is higher, the load on the residential part The operation mode may be set to the eco mode or the power supply may be turned off.

≪5. Embodiment 5 >>
In the power management method of the first embodiment, the storage battery system 10 performs charge / discharge according to the charge / discharge plan provided from the power management apparatus 100. On the other hand, in the power management method of the fifth embodiment, the storage battery system receives an input instructing charge / discharge from an administrator such as a consumer who manages the storage battery system and creates a charge / discharge plan. And a storage battery system selects either the charging / discharging plan provided from the power management apparatus, and the charging / discharging plan created by the input of the administrator of a storage battery system, and performs charging / discharging according to the selected charging / discharging plan. According to the power management method of the fifth embodiment, it becomes possible for the administrator of the storage battery system to flexibly plan the charge / discharge of the storage battery while receiving the provision of the charge / discharge plan from the power management apparatus.

Hereinafter, the power management method of the fifth embodiment will be described with reference to the drawings. In the fifth embodiment, components and processing steps that perform substantially the same processing as in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
<5-1. Configuration and Operation>
FIG. 25 is a configuration diagram of a power management system 5 that uses the power management method of the fifth embodiment.

The power management system 5 shown in FIG. 25 is obtained by replacing the storage battery system 10 with the storage battery system 90 in the power management system 1 of the first embodiment.
The storage battery system 90 includes a control unit 91, a storage battery 92, an apparatus plan acquisition unit 93, a user input reception unit 94, a user plan creation unit 95, a database 96, and a setting unit 97.
The apparatus plan acquisition unit 93 has a function of acquiring a charge / discharge table from the power management apparatus 100 and outputting the acquired charge / discharge table to the database 96. In the fifth embodiment, the charge / discharge table acquired from the power management apparatus 100 is referred to as a device plan table in order to distinguish it from a charge / discharge table created by the user plan creation unit 95 described later.

The user input reception unit 94 receives an input (for example, a time zone for charging / discharging the storage battery 92 or an input of charge / discharge energy) from the administrator of the storage battery system 90 to instruct charging / discharging of the storage battery 92. A function of outputting the input instruction to the user plan creation unit 95 is provided.
Note that the user input receiving unit 94 may receive an input directly instructing charging / discharging of the storage battery 92 from the administrator of the storage battery system 90, or function to communicate with the administrator terminal of the storage battery system 90. And receiving an input for instructing charge / discharge of the storage battery 92 indirectly through the terminal.

The user plan creation unit 95 creates a charge / discharge table in accordance with the charge / discharge instruction of the storage battery 92 output from the user input reception unit 94 by the administrator of the storage battery system, and outputs the created charge / discharge table to the database 96. It has a function.
In addition, for example, when the user input receiving unit 94 receives an input of a time zone in which the storage battery 92 is charged / discharged as an input for instructing charging / discharging of the storage battery 92 and does not receive charge / discharge power amount, The plan creation unit 95 may determine the charge / discharge power amount according to the remaining charge amount and the capacity of the storage battery system 90.

In the fifth embodiment, the charge / discharge table created by the user plan creation unit 95 is referred to as a user plan table in order to distinguish it from the charge / discharge table acquired from the power management apparatus 100 described above.
The database 96 has a function of storing the device plan table output from the device plan acquisition unit 93 and the user plan table output from the user plan creation unit 95.

FIG. 26A is a diagram illustrating an example of an apparatus plan table stored in the database 96, and FIG. 26B is a diagram illustrating an example of a user plan table stored in the database 96.
In the apparatus plan table shown in FIG. 26A, charging / discharging of the storage battery 92 is planned every 30 minutes, whereas in the user plan table shown in FIG. Charging and discharging are planned. As described above, the user input receiving unit 94 receives an input for instructing charging / discharging of the storage battery 92 every relatively long time so that the administrator of the storage battery system 90 can easily input for instructing charging / discharging of the storage battery 92. In other words, the user plan table may define charging / discharging of the storage battery 92 for each relatively long time.

The setting unit 97 has a function of referring to the database 96 and setting the charge / discharge to be executed by the storage battery 92 with respect to the control unit 91.
The control unit 91 has a function of controlling charging / discharging of the storage battery 92 according to the setting by the setting unit 97.
FIG. 27 is a flowchart showing the operation of the setting unit 97.

The setting unit 97 periodically determines whether or not a user plan table for a predetermined period is stored in the database 96 (step S601).
When the user plan table for the predetermined period is not stored (step S601: NO), the setting unit 97 sets the apparatus plan table for the predetermined period stored in the database 96 to the control unit 91 (step S602). ). At this time, the control unit 91 controls charging / discharging of the storage battery 92 according to the set device plan table in a predetermined period.

On the other hand, when the user plan table for a predetermined period is stored (step S601: YES), the setting unit 97 sets the user plan table for the predetermined period in the control unit 91 (step S603). At this time, the control part 91 controls charging / discharging of the storage battery 92 according to the set user plan table in the predetermined period.
Here, the operation of the setting unit 97 will be specifically described with reference to FIGS. For example, the setting part 97 shall set the charging / discharging which the storage battery 92 performs with respect to the control part 91 for every day as a predetermined period.

  Since the user plan table for 2014/03/01 is not stored in FIG. 26B (step S601: NO), the setting unit 97 performs charge / discharge for 2014/03/01 as shown in FIG. The stored device plan table for 2014/03/01 is set for the control unit 91 (step S602). In addition, since the user plan table of 2014/03/02 is stored in FIG. 26B (step S601: YES), the setting unit 97 performs charging / discharging of 2014/03/01. A user plan table of 01 is set for the control unit 91 (step S603).

  According to the power management method of the fifth embodiment, when there is an input instructing charging / discharging by the administrator of the storage battery system 90, the storage battery system 90 can be charged / discharged according to the instruction. Even if there is no input for instructing charging / discharging by the administrator of the storage battery system 90, the storage battery system 90 can be charged / discharged according to the charging / discharging plan planned by the power management apparatus 100. The burden on the administrator of the system 90 can be reduced.

<5-2. Modification (Part 1)>
In the power management system 5 of the fifth embodiment, the power management apparatus 100 provides the storage battery system 90 with the prediction result of the power demand and the content of the power saving request, and the storage battery system 90 receives the input of the charge / discharge plan by the user. To help, the prediction result of the power demand provided from the power management apparatus and the content of the power saving request may be displayed. In addition, when the input which instruct | indicates charging / discharging of the storage battery 92 from the administrator of the storage battery system 90 is performed via the administrator terminal of the storage battery system 90, the prediction result of an electric power demand and the content of a power-saving request | requirement are sent to the terminal. It may be displayed.

FIG. 28 and FIG. 29 are examples of displaying power demand prediction results and power saving request contents.
As shown in FIG. 28 (a), the prediction result of the power demand may be displayed in a graph to indicate the time zone in which power saving is requested (t1 <t <t2). Moreover, you may show the time slot | zone when the electric power demand exceeds the threshold set based on a basic charge as a time slot | zone which recommends a peak cut (t3 <t <t4).

  In addition, as shown in FIG. 28 (b), the prediction of power supplied from the commercial power source when the storage battery is charged / discharged according to the device plan table planned by the power management device 100 may be displayed. In FIG. 28 (b), the hatched area represents the charge power amount or discharge power amount of the storage battery. In other words, the hatched area in the time zone of t1 <t <t2 represents the amount of discharge power for demand response planned by the power management apparatus, and the hatched area in the time zone of t3 <t <t4 is The discharge power amount for the peak cut planned by the power management apparatus is shown. The hatched region in the time zone of t5 <t <t6 represents the amount of charging power charged by the charging time planned by the power management apparatus, that is, the amount of power supplied from the commercial power source to the storage battery.

Moreover, you may display as shown in FIG.28 (b) the electric power prediction supplied from a commercial power source when charging / discharging a storage battery according to the user plan table created by the input of the storage battery manager.
By performing such display, the administrator of the storage battery system confirms the prediction of the power supplied from the commercial power source when the storage battery is charged and discharged according to the device plan table or the user plan table, and then the storage battery system It is possible to appropriately input for instructing charging / discharging.

Further, as shown in FIGS. 28A and 28B, both the display in FIG. 28A and the display in FIG. 28B may be displayed using tabs, for example.
In addition, as shown in FIG. 29 (a), together with the prediction result of the power demand, the customer's schedule (for example, getting up, going out, returning home, etc.) may be displayed, and the electricity charge of the commercial power source is the time. If it differs depending on the band, the information (for example, normal charge time, night charge time, etc.) may be displayed.

  In addition, as shown in FIG. 29B, the prediction result of the power demand of the entire power supply destination of the commercial power source is displayed together with the prediction result of the power demand of the load group 15 used by the consumer (home). Also good. At that time, the scale may be adjusted so that the difference in the transition of power demand between each other can be easily seen. Further, when the home is a part of the apartment house, as shown in FIG. 29B, the prediction result of the power demand of the entire apartment house may be displayed.

Also, the display examples of FIGS. 28A and 28B and FIGS. 29A and 29B may be combined.
<5-3. Modification (Part 2)>
In the power management method of the fifth embodiment, when the user plan table for a predetermined period is not stored in the database 96, the setting unit 97 sets the apparatus plan table for the predetermined period in the control unit 91 and stores it in the database 96. When a user plan table for a predetermined period is stored, the user plan table for the predetermined period is set in the control unit 91, but the present invention is not limited to this.

  For example, the storage battery system 90 creates and stores a user plan table for a certain period that does not limit the date. Then, for each predetermined period, which of the user plan table and the device plan table is set in the control unit 91 may be selected by an instruction from the administrator of the storage battery system 90. According to this method, the administrator of the storage battery system 90 does not need to frequently make an input for creating the user plan table, and the burden on the administrator of the storage battery system 90 is reduced.

Moreover, when the storage battery system 90 cannot acquire an apparatus plan table by influence, such as communication interruption | blocking, you may charge / discharge the storage battery 92 according to the stored user plan table.
<5-4. Modification (Part 3)>
In the power management method of the fifth embodiment, the storage battery system 90 receives the input from the administrator of the storage battery system and creates a charge / discharge plan, and the charge / discharge plan created and the charge provided from the power management apparatus 100. Although any one of the discharge plans is selected and charging / discharging is performed according to the selected charging / discharging plan, the present invention is not limited to this.

For example, the power management apparatus 100 further receives an input from the storage battery system administrator to create a charge / discharge plan, and the charge / discharge plan by the input of the created storage battery system administrator and the charge / discharge planning unit 140 create Alternatively, any one of the updated charge / discharge plans may be selected, and the selected charge / discharge plans may be provided to the storage battery system.
<5-5. Modification (Part 4)>
The charge / discharge plan input by the administrator of the storage battery system and the charge / discharge plan created or updated by the charge / discharge plan unit 140 of the power management apparatus 100 may be combined.

  Specifically, for example, the power management apparatus provides a prediction result of the power demand to the administrator of the storage battery system and prompts an input to instruct charging / discharging of the storage battery system. By providing the storage battery system administrator with the prediction result of the power demand, the storage battery system administrator can make an input instructing the discharge time zone for peak cut and the amount of discharge power. Then, the power management apparatus creates a charge / discharge plan for the storage battery according to the charge / discharge instruction of the storage battery system by the administrator of the storage battery system. And the charging / discharging plan of the produced storage battery is updated when the power saving request | requirement is received from the power saving request | requirement electric power provider. For this update, a method similar to the method for updating the charge / discharge plan in the charge / discharge planning unit 140 of the power management apparatus 100 may be used.

≪6. Supplement (Part 1) >>
(1) <1-3. Supplement> In the explanation, the power management apparatus 100 may prioritize the demand response over the peak cut and determine the discharge power amount for the peak cut after securing the discharge power amount for the demand response. . This is not limited to the first embodiment, and the same can be said for the other embodiments and modifications.

(2) There are various incentive arrangements that electric power companies pay to consumers in the demand response mechanism.
(2-1. Specific Example 1) For example, the electric power company may grasp the amount of discharged power of the storage battery with respect to the demand response and pay an incentive to the consumer according to the amount of discharged power with respect to the demand response. In this case, as described with reference to FIG. 9 in the first embodiment, when the discharge time zone for demand response and the discharge time zone for peak cut overlap, the maximum output of the storage battery 12 is taken into consideration. It is effective to set the discharge electric energy for demand response to the maximum.

  (2-2. Specific Example 2) For example, an electric power company grasps the discharge time and the amount of discharge power of the storage battery, and pays the incentive to the consumer according to the discharge power amount of the storage battery in the time zone requested to save power. Also good. In this case, the electric power company pays the incentive to the consumer according to the amount of discharge power of the storage battery in the time zone for which power saving is requested without distinguishing between discharge for demand response and discharge for peak cut. It becomes.

  In addition, it is assumed that the electric power company notifies not only the time zone for requesting power saving but also the amount of power to request reduction. For example, as shown in FIG. 30A, it is assumed that the power company has notified the time zone for requesting power saving and the amount of power to request reduction. Then, it is assumed that a charge / discharge table as shown in FIG. At this time, if the incentive is determined by the agreement in (2-2. Specific Example 2) above, the time period from 16:00 to 17 at which the time period for which power saving is requested and the discharge time period for peak cut overlap. In the time zone of 0:00, by discharging 6 kWh of electric energy for peak cutting, the reduction of 2 kWh of electric energy requested in the power saving request is satisfied, and the customer can obtain an incentive of 2 kWh. Therefore, as shown in FIG. 30C, the power management apparatus may set the discharge power amount during the time period from 16:00 to 17:00 to 6 kWh as it is when updating the charge / discharge table.

  (3) In order to perform peak cut, the power management apparatuses according to the above embodiments and modifications may plan charging / discharging of the storage battery, for example, on a weekly basis or on a daily basis. In addition, in the power management apparatus of each of the above-described embodiments and modified examples, every time power data is acquired from the power meter, the operation is planned to charge / discharge the storage battery. The power data may be acquired and stored in advance, and the power demand may be predicted at the timing when the charging / discharging of the storage battery is planned.

(4) In the power management system 1 of the first embodiment, the power management apparatus 100 may be built in the storage battery system 10 and realized.
(5) In the power management system 1 of the first embodiment, the power management apparatus 100 may be replaced with the power management apparatus 600 shown in FIG.
The power management apparatus 600 is the same as the power management apparatus 100 except that the power data acquisition unit 610 is added except for the power data acquisition unit 110 and the power demand prediction unit 120, and the database 150 is replaced with the database 650.

The power demand acquisition unit 610 has a function of acquiring a power demand prediction result from the outside and outputting it to the charge / discharge planning unit 140.
The database 650 has a function of storing a charge / discharge table output from the charge / discharge planning unit 140 and a prediction result of power demand.
That is, the power management apparatus 100 performs the power demand prediction performed by the power demand prediction unit 120, but the power management apparatus 600 acquires the power demand prediction from an external device.

The power management apparatus 600 may be built in the storage battery system 10 to form the system 700. The system 700 can have a simpler configuration than when the power management apparatus 100 is built in the storage battery system 10.
(6) In the first embodiment, the charging / discharging planning unit 140 of the power management apparatus 100 performs the processing in step S203 between the discharge time zone for peak cut and the discharge time zone for demand response. Although gap charging is performed if possible, gap charging may not be performed. In this case, the process of step S212 and S215-219 is excluded from the process of step S203, and the process of the charging / discharging plan part 140 is reduced. Not only in the first embodiment, but also in other embodiments and modifications, the storage battery may be charged / discharged so that the power management apparatus and the management server do not perform gap charging.

  (7) Although the power meter 20 is provided in the power distribution network upstream of the storage battery system 10 in the first embodiment, the power meter 20 is provided in the power distribution network downstream of the storage battery system 10 and the power consumption of the load group 15 May be measured. Thus, by installing the power meter 20 so as to measure the power usage amount of the load group 15, the power demand prediction unit 120 can calculate the power usage amount 20 of the load group 15 without calculating the history of the power usage amount of the load group 15. It is possible to predict the power demand of the load group 15 by directly analyzing the measurement result.

  (8) In each of the embodiments and the modifications described above, the power demand prediction unit performs the prediction of the power demand of the load group by analyzing the history information of the power usage amount of the load group, but is not limited thereto. For example, it is possible to predict the power consumption of the load group based on the climate and weather, the lifestyle and family structure of the customer, the load equipment constituting the load group, and the like. Therefore, the power demand of the load group may be predicted using an algorithm (for example, a neural network or a time series analysis method) that can reflect the prediction of the power usage of the load group. Moreover, you may incorporate the measurement result of an electric power meter in such an algorithm.

(9) The power management system 2 according to the second embodiment has been described as an example in which the power management system 2 is used in an apartment house. However, the power management system 2 is not limited to an apartment house. It can be used in any case.
In addition, the power management system 2 of the second embodiment has been described by taking an example in which a shared storage battery and a door-to-door storage battery are provided in an apartment house. The In such a case, similarly to the power management system 1 of the first embodiment, the power management device may plan charging / discharging of the shared storage battery.

  (10) In the power management system 2 of the above-described embodiment, the power management apparatus 200 forms a virtual storage battery by creating and updating a virtual storage battery charge / discharge table (FIG. 17: step S301) and updating (FIG. 18: step S403). Although it has been described that both the creation and provision of charge / discharge tables (FIGS. 17 and 18: step S302, step S303, step S404) for each storage battery to be performed are performed, the latter may be performed by another device. For example, you may implement | achieve the power management system 2 with the management server which produces and updates the charging / discharging table of a virtual storage battery, and the aggregation apparatus which produces the charging / discharging table of each storage battery which comprises a virtual storage battery.

(11) The above-described power supply service is merely an example, and the above-described embodiments and modifications can be used for various power supply services.
In the power supply service exemplified in the above embodiment and the like, it has been described that the basic charge of the electricity charge is determined by the peak of the power consumption of the commercial power source by the consumer (or customer group) in a predetermined period. In some cases, it is determined by the peak of the measured amperage, as well as the peak.

As described above, when the basic charge of the electricity charge is determined by the peak of the measured amperage value, in each of the above embodiments and modifications, the discharge for peak cut is performed so that the basic charge does not increase from the historical information of the amperage value. You may determine time and discharge electric energy.
In addition, as one of the power supply services, there is a limit to the amount of commercial power supply, so the unit price of electricity is changed according to the power supply and demand situation of the entire consumers to whom the commercial power is supplied (dynamic pricing). ). When using the power management system of each of the above embodiments and modifications for such a power service, the storage battery is further charged during a time period when the unit price of electricity is low, and the storage battery is discharged during a period when the unit price of electricity is high. You may make it make it.

  (12) In each of the above embodiments and modifications, the electric power company makes a power saving request, but the present invention is not limited to this. As a mechanism for supplying power to consumers, for example, there are cases where a power generation company responsible for power generation and a power distribution company responsible for power distribution exist separately, but either the power generation company or the power distribution company May make a power saving request. An intermediary such as the high-voltage collective carrier described in the second embodiment may make a power saving request to the power management apparatus provided in each customer.

  (13) In the first embodiment, as the power saving request, the power management device 100 (in other words, the consumer corresponding to the power management device 100) is notified of the time zone for requesting power saving, FIG. As shown in the example, the time zone for requesting power saving is notified for each region to which the consumer belongs, but the present invention is not limited to this. For example, a group of consumers composed of a plurality of consumers may be defined, and a time zone for requesting power saving may be notified for each group of consumers. In the example illustrated in FIG. 12, the information notified to the power management apparatus includes the area specifying information. However, information indicating a consumer individual (or a storage battery corresponding to the consumer individual) or a consumer May be information indicating a group (or a group of storage batteries corresponding to a group of customers), or the information may be combined. As long as the power management device can link the power saving request and the storage battery, the power saving request notification method is not limited.

(14) Generally, there are limitations on the charging capacity, the amount of charging power and the amount of discharging power per unit time of a storage battery system (shared storage battery system, door-to-door storage battery system). In each said embodiment and modification, a charging / discharging plan part may plan charging / discharging of a storage battery based on the charging capacity of a storage battery system, the charge electric energy per unit time, and the discharge electric energy.
(15) In the processing of step S302 in FIG. 17 and step S404 in FIG. 18 in the second embodiment, the charge / discharge planning unit 240 further determines the health state of each storage battery and the value of SOH (State Of Health). A charge / discharge table for each storage battery may be created.

  Specifically, for example, the discharge power amount in the charge / discharge table of the virtual storage battery may be assigned to each storage battery so that the storage battery having a high SOH value, that is, a low deterioration degree, is preferentially discharged. Further, for example, if a sufficient amount of discharge power can be secured, a storage battery having a low SOH value, that is, a high degree of deterioration may not be discharged. Note that the deterioration state of the storage battery is not limited to the value of SOH, and may be determined by the number of charge / discharge cycles or other estimation methods.

  In order to increase the life of the storage battery, it is desirable not to continue a state where the degree of remaining charge (SOC: State Of Charge) with respect to the charge capacity of the storage battery is high for a certain period or longer. Therefore, in the process of step S302 of FIG. 17 or step S404 of FIG. 18, the charge / discharge planning unit 240 may further create a charge / discharge table for each storage battery based on the SOC value of each storage battery. Specifically, discharging may be performed with priority given to a storage battery in which a state where the SOC value is high continues for a long period of time.

In order to increase the life of the storage battery, it is effective to limit the amount of charge power and the amount of discharge power per unit time. Therefore, the charge / discharge planning unit 240 further restricts the charge / discharge amount per unit time of each storage battery, and creates and updates the charge / discharge table of the virtual storage battery and creates the charge / discharge table of each storage battery. May be.
In addition, by planning the charging / discharging of multiple storage batteries in consideration of the life and deterioration of the storage battery, it is possible to maintain the health of multiple storage batteries equally and maintain stable charge / discharge performance over the long term It becomes.

  (16) Here, the storage battery is mentioned. In the power management methods of the above embodiments, for example, the power management apparatus may monitor the deterioration state of the storage battery provided in the storage battery system and notify the administrator of the storage battery system of the deterioration state. In addition to the power management device, the storage battery system may self-diagnose the deterioration state of the storage battery and notify the administrator of the storage battery system of the deterioration state. The deterioration state of the storage battery can be determined by, for example, the value of SOH, the number of charge / discharge cycles, other deterioration estimation means, and the like. By notifying the administrator of the storage battery system of the deterioration state of the storage battery, maintenance work (for example, battery replacement) for continuous storage battery use is facilitated.

Moreover, in order to increase the life of the storage battery, it is desirable not to continue the state where the SOC value is large for a certain period. Therefore, in the power management apparatus according to each of the embodiments described above, the charge / discharge planning unit may perform the charge / discharge plan so that the state where the storage battery has a large charge amount does not continue for a certain period or longer.
In order to increase the life of the storage battery, it is also effective to limit the amount of charge power and discharge power per unit time. Therefore, in the power management apparatus according to each of the embodiments described above, the charge / discharge planning unit may limit the charge / discharge amount per unit time and perform the charge / discharge plan.

(17) The power management apparatus and the management server of each of the above embodiments may be realized as a part of a smart meter, a HEMS (Home Energy Management System), another energy management system (EMS: Energy Management System), or the like. Good.
(18) Each component of each device shown in the modified example including the above embodiments may be realized by an LSI (Large Scale Integration) which is an integrated circuit. At this time, each component may be individually made into one chip, or may be made into one chip so as to include a part or all of them. In addition, although it is referred to as LSI here, it may be referred to as IC (Integrated Circuit), system LSI, super LSI, or ultra LSI depending on the degree of integration. Further, the method of circuit integration is not limited to LSI, and implementation with a dedicated circuit or a general-purpose processor is also possible. An FPGA (Field Programmable Gate Array) or a reconfigurable processor capable of reconfiguring connection and setting of circuit cells inside the LSI may be used. Furthermore, if integrated circuit technology comes out to replace LSI's as a result of the advancement of semiconductor technology or a derivative other technology, it is naturally also possible to carry out function block integration using this technology.

(19) At least a part of the operation procedure of each device described in the above embodiments and modifications is described in a program, and for example, a CPU (Central Processing Unit) reads and executes the program stored in a memory The program may be stored in a recording medium and distributed.
(20) The contents described in the above embodiments, modifications, supplements, and the like may be combined as appropriate.

≪7. Supplement (Part 2) >>
The power management method, power management system, power management apparatus, and program according to the above-described embodiments, modifications, and supplements (part 1) will be summarized.
(1) In the first power management method, power is supplied from a commercial power source to the load group by discharging the storage battery and supplying power to the load group used by the consumer group including one or more consumers. A power management method performed in a power management system for adjusting an amount, acquiring power demand of the consumer group, specifying a time zone in which the power demand exceeds a predetermined threshold as a first time zone, When receiving a power saving request for reducing the amount of power supplied from a commercial power supply to a consumer group from a power supply administrator, the time zone requested to be deleted is identified as a second time zone, Based on the remaining charge of the storage battery, a first discharge power amount to be discharged in the first time zone and a second discharge power amount to be discharged in the second time zone are determined, and the first time zone To discharge the first discharge power amount to the storage battery, Said two time periods second discharge power amount is discharged to the storage battery, characterized in that.

  According to the first power management method, when a peak cut mechanism using a storage battery and a demand response mechanism are combined, the discharge power amount for peak cut and the discharge power amount for demand response Can be determined appropriately. In the first power management method, one storage battery that supplies power to one consumer is discharged to perform peak cut and demand response of one consumer, or a consumer consisting of a plurality of consumers. This can be implemented when one storage battery that supplies power to the entire group is discharged to perform peak cut and demand response for the entire consumer group.

  (2) In the first power management method, the second power management method determines the first discharge power amount based on a difference between the power demand in the first time zone and a predetermined threshold, Electric power obtained by subtracting the first discharge power amount from the remaining charge amount of the storage battery at the start time of the first time zone and the second time zone before the second discharge power amount. It may be determined based on the amount.

According to the second power management method, it is possible to determine the discharge power amount for demand response after determining the discharge power amount to realize the peak cut.
(3) A third power management method is the first power management method, wherein the second discharge power amount is determined so as to satisfy the power saving request, and the first discharge power amount is determined for the first time. It is good also as determining based on the electric energy which deducted the said 2nd discharge electric energy from the charge remaining amount of the storage battery in the start time of the time slot | zone ahead of a belt | band | zone and said 2nd time belt | band | zone.

According to the third power management method, it is possible to determine the discharge power amount for peak cut after determining the discharge power amount in order to realize the demand response.
(4) The fourth power management method is the first power management method, wherein there is a time interval longer than a predetermined time between the first time zone and the second time zone. The storage battery is charged for a predetermined time between the time zone and the second time zone, and the first discharge power amount is calculated based on a difference between the power demand in the first time zone and a predetermined threshold value. And determining the second discharge power amount, the remaining charge of the storage battery at the start time of the first time zone and the second time zone, and the first time zone. It is good also as determining based on the electric energy which deducted the said 1st discharge electric energy from the sum of the charging electric energy between the 1st and 2nd time slot | zones.

According to the fourth power management method, by performing gap charging between the first time zone and the second time zone, it is possible to ensure the amount of discharge power for demand response.
(5) The fifth power management method is the first power management method, wherein when there is a time interval longer than a predetermined time between the first time zone and the second time zone, The storage battery is charged for a predetermined time between the second time period and the second time period, the second discharge power amount is determined to satisfy the power saving request, and the first discharge power amount is The remaining charge amount of the storage battery at the start time of the first time zone between the first time zone and the second time zone, and the charging power between the first time zone and the second time zone It is good also as determining based on the electric energy which deducted the said 2nd discharge electric energy from the sum with the quantity.

According to the fifth power management method, by performing gap charging between the first time zone and the second time zone, it becomes possible to secure the amount of discharge power for peak cut.
(6) In the sixth power management method, in the second or third power management method, when the determined first discharge power amount is less than a desirable power amount as the first discharge power amount, In the first time zone, the power consumption of the consumer is reduced, and the desired power amount as the first discharge power amount is greater than the difference between the power demand in the first time zone and a predetermined threshold value. If the second discharge power amount is less than a desired power amount as the second discharge power amount, the power consumption of the consumer is reduced in the second time zone, and the second discharge power amount The power amount desirable as the two discharge power amounts may be a power amount that satisfies the power saving request.

According to the sixth power management method, it is possible to reduce power consumption even when the amount of discharge power is insufficient.
(7) A seventh power management method is the first power management method, wherein the power saving request is at least one of a customer who requests reduction of power, a group of customers, and a region to which the customer belongs. Indicating whether or not to discharge the storage battery in response to the power-saving request, based on the customer-specific information, The second time zone may be specified based on the time zone information.

According to the seventh power management method, whether or not to perform discharging when a power saving request is made from a power provider to a plurality of consumers in response to a power saving request including customer specifying information and time zone information. The discharge time zone can be determined appropriately.
(8) In the first power management method, the eighth power management method further receives from the manager managing the storage battery an instruction of a time zone for discharging the storage battery and a discharge power amount to be discharged in the time zone, It is determined whether to discharge the storage battery according to the instruction, and when it is determined not to discharge the storage battery according to the instruction, the first discharge power amount is discharged to the storage battery during the first time period, and the second When the storage battery is discharged in accordance with the instruction and the storage battery is discharged according to the instruction, the storage battery may be discharged according to the instruction.

According to the eighth power management method, it is possible to further receive a charge / discharge instruction from the storage battery manager and discharge the storage battery in accordance with the instruction.
(9) In the ninth power management method, in the first power management method, an instruction from an administrator who manages the storage battery may be further received, and the first time zone may be specified by the instruction. .

According to the ninth power management method, the administrator of the storage battery can instruct the first time zone, that is, the discharge time zone for peak cut.
(10) In the tenth power management method, in the second or third power management method, there are a plurality of consumers constituting the consumer group, and the plurality of consumers are residents of an apartment house, The storage battery is a shared storage battery used by the plurality of consumers constituting the consumer group, the shared storage battery is provided in the collective housing, and the collective housing is further provided for each of the plurality of consumers. When a storage battery for supplying electricity to a load group used by a consumer is provided, and the determined discharge power amount of the shared storage battery is less than the desired power amount as the first discharge power amount, Each of the door-to-door storage batteries is discharged, and the desirable power amount as the first discharge power amount is a power amount that is greater than the difference between the power demand of the consumer group in the first time zone and the predetermined threshold, First When the amount of discharged power is less than the amount of power desired as the second amount of discharged power, each of the door-to-door storage batteries is discharged, and the amount of power desired as the amount of second discharged power is the amount of power that satisfies the power saving request. It is good also as.

According to the tenth power management method, when the shared storage battery and the door-to-door storage battery are provided in the apartment house, when the discharge power amount of the common storage battery is insufficient, the door-to-door storage battery is discharged and the shortage of the common storage battery Can be supplemented.
(11) In an eleventh power management method, an eleventh power management method performs initial setting for setting a time zone in which discharge in the door-to-door storage battery is allowed and a maximum value of discharge power for each of the door-to-door storage batteries, The discharge of each of the door-to-door storage batteries may be determined and performed based on the initial setting of the door-to-door storage battery.

According to the eleventh power management method, the convenience for the user can be improved by performing the initial setting for each of the individual storage batteries.
(12) The twelfth power management method may be that in the second power management method, the start time of the second time zone is a time before the start time of the first time zone.
According to the twelfth power management method, even if the first time zone is after the second time zone, the discharge power amount in the first time zone, that is, the discharge power amount is reduced in order to realize the peak cut. After the determination, it is possible to determine the discharge power amount for the second time zone, that is, the discharge power amount for demand response.

  (13) A thirteenth power management method is the first power management method, in which the amount of power supplied from a commercial power source to the consumer is measured, and the measured power amount is greater than a predetermined power amount Supply power generated by a power generation device or power generated by a solar power generation device to the consumer, limit power supplied from a commercial power source to the consumer, and reduce power consumption to the consumer At least one of the prompts may be performed.

According to the thirteenth power management method, when the actually measured power amount is larger than the predetermined power amount, various measures can be taken to reduce the amount of power supplied from the commercial power source to the consumer. It becomes possible.
(14) In the fourteenth power management method, by supplying electric power by discharging the storage battery of each of the plurality of consumers to each of the load groups used by the consumer group composed of a plurality of consumers, A power management method performed in a power management system that adjusts the amount of power supplied to the entire load group of the consumer group, the power demand of the consumer group is acquired, and the power demand exceeds a predetermined threshold value When the time zone is identified as the first time zone, and the manager of the commercial power supply receives a power saving request to reduce the amount of power supplied to the consumer group from the commercial power supply, the deletion is requested. A first discharge that specifies a time zone as a second time zone and discharges each of the plurality of consumer storage batteries during the first time zone based on a remaining charge of the entire plurality of consumer storage batteries. The amount of power and And determining the second discharge power amount to be discharged during the first time zone, discharging the first discharge power amount to each of the storage batteries during the first time zone, and the second discharge power amount during the second time zone. Is discharged to each of the storage batteries.

  According to the fourteenth power management method, when a peak cut mechanism using a storage battery and a demand response mechanism are combined, the discharge power amount for peak cut and the discharge power amount for demand response are Can be determined appropriately. Note that the fourteenth power management method can be implemented when a plurality of storage batteries corresponding to each of a plurality of consumers are discharged to perform peak cut and demand response of a group of consumers composed of the plurality of consumers. is there.

  (15) The power management system adjusts the amount of power supplied from the commercial power source to the load group by discharging the storage battery and supplying power to the load group used by the consumer group consisting of one or more consumers. A power management system that acquires a power demand of the consumer group, and identifies a time zone in which the power demand exceeds a predetermined threshold as a first time zone, from an administrator of a commercial power source, When receiving a power saving request for reducing the amount of power supplied from a commercial power source to a consumer group, a specifying unit that specifies the time zone requested to be deleted as a second time zone, and charging the storage battery A determination unit for determining a first discharge power amount to be discharged in the first time zone and a second discharge power amount to be discharged in the second time zone based on the remaining amount; and the first time zone To discharge the first discharge energy to the storage battery, An instruction portion for discharging the second discharge power amount in the battery to the second time period, characterized in that it comprises a.

  (16) The power management device adjusts the amount of power supplied from the commercial power source to the load group by discharging the storage battery and supplying power to the load group used by the consumer group including one or more consumers. A power management device that acquires a power demand of the consumer group, and identifies a time zone in which the power demand exceeds a predetermined threshold as a first time zone, from a manager of a commercial power source, When receiving a power saving request for reducing the amount of power supplied from a commercial power source to a consumer group, a specifying unit that specifies the time zone requested to be deleted as a second time zone, and charging the storage battery A determination unit for determining a first discharge power amount to be discharged in the first time zone and a second discharge power amount to be discharged in the second time zone based on the remaining amount; and the first time zone The first discharge power amount to the storage battery, and the second Characterized in that said second discharge electric energy between band and an instruction unit to discharge the battery.

  (17) The program adjusts the amount of power supplied from a commercial power source to the load group by discharging the storage battery and supplying power to the load group used by the consumer group consisting of one or more consumers. A program executed in a management device, wherein the power management device acquires power demand of the customer group, specifies a time zone in which the power demand exceeds a predetermined threshold as a first time zone, and When the power management request for reducing the amount of power supplied from the commercial power source to the consumer group is received from the manager of the power source, the time zone requested to be deleted is identified as the second time zone, and the storage battery And determining a first discharge power amount to be discharged in the first time zone and a second discharge power amount to be discharged in the second time zone, based on the remaining charge amount of the first time zone. The first discharge energy is discharged to the storage battery. , Said second discharge power amount is discharged to the storage battery to the second time period, characterized in that to perform the.

  According to each of these power management systems, power management devices, and programs, when the peak cut mechanism using a storage battery and the demand response mechanism are combined, the discharge power amount and demand response for peak cut are combined. Therefore, it is possible to appropriately determine the amount of discharge power for the purpose.

  The power management method according to the present invention is applicable to various systems in which a storage battery is used.

1, 2, 3, 4, 5 Power management system 10 Storage battery system 11 Control unit 12 Storage battery 15 Load group 20 Electric power meter 30 Shared storage battery system 31 Control unit 32 Shared storage battery 40 Main power meter 50 Individual storage battery system 51 Control unit 52 Individual storage battery 60 Electric power meter for each house 70 Meter monitoring device 80 Solar power generation system 90 Storage battery system 91 Control unit 92 Storage battery 93 Device plan acquisition unit 94 User input reception unit 95 User plan creation unit 96 Database 97 Setting unit 100, 200, 400, 500 Power management Device 110 Power data acquisition unit 120 Power demand prediction unit 130 Power saving request reception unit 140, 240, 440 Charge / discharge planning unit 150, 250, 650 Database 300 Management server 310 Storage battery information acquisition unit 320 Server database 3 0 power-saving request accepting unit 340 updating unit 430 updates the reception unit 510 power adjustment unit 600 the power management device 610 power demand acquiring section 700 system

Claims (17)

Electricity performed in an electric power management system that adjusts the amount of electric power supplied from a commercial power source to the load group by discharging the storage battery and supplying electric power to the load group used by the customer group consisting of one or more consumers A management method,
Obtaining power demand of the consumer group,
A time zone in which the power demand exceeds a predetermined threshold is specified as a first time zone,
When receiving a power saving request for requesting reduction of the amount of power supplied from the commercial power source to the consumer group from the manager of the commercial power source, the time zone requested to be deleted is identified as the second time zone,
Based on the remaining charge of the storage battery, a first discharge power amount to be discharged in the first time zone and a second discharge power amount to be discharged in the second time zone are determined,
Causing the storage battery to discharge the first discharge energy during the first time period, and causing the storage battery to discharge the second discharge energy during the second time period;
Power management method. The first discharge energy is
Determining based on the difference between the power demand in the first time zone and a predetermined threshold;
The second discharge electric energy is
Determining based on the electric energy obtained by subtracting the first discharge electric energy from the remaining charge of the storage battery at the start time of the first time period and the second time period.
The power management method according to claim 1. The second discharge electric energy is
Decided to meet the power saving request,
The first discharge energy is
Determining based on the electric energy obtained by subtracting the second discharge electric energy from the charge remaining amount of the storage battery at the start time of the first time period and the second time period.
The power management method according to claim 1. When there is a time interval longer than a predetermined time between the first time zone and the second time zone,
Between the first time zone and the second time zone, the storage battery is charged for a predetermined time,
The first discharge energy is
Determining based on the difference between the power demand in the first time zone and a predetermined threshold;
The second discharge electric energy is
Between the first time zone and the second time zone, the remaining charge of the storage battery at the start time of the time zone that precedes the first time zone and the second time zone, and between the first time zone and the second time zone Determine based on the amount of power obtained by subtracting the first discharge power amount from the sum of the charge power amount,
The power management method according to claim 1. When there is a time interval longer than a predetermined time between the first time zone and the second time zone,
Between the first time zone and the second time zone, the storage battery is charged for a predetermined time,
The second discharge electric energy is
Decided to meet the power saving request,
The first discharge energy is
Between the first time zone and the second time zone, the remaining charge of the storage battery at the start time of the time zone that precedes the first time zone and the second time zone, and between the first time zone and the second time zone Determined based on the amount of power obtained by subtracting the second discharge power amount from the sum of the charge power amount,
The power management method according to claim 1. When the determined first discharge power amount is less than the desired power amount as the first discharge power amount,
In the first time zone, reduce power consumption of the consumer,
A desirable power amount as the first discharge power amount is a power amount larger than a difference between the power demand in the first time zone and a predetermined threshold value,
When the second discharge power amount is less than the desired power amount as the second discharge power amount,
In the second time period, the power consumption of the consumer is reduced,
A desirable power amount as the second discharge power amount is an amount of power that satisfies the power saving request.
The power management method according to claim 2 or 3. The power saving request includes customer specifying information indicating at least one of a customer requesting reduction of electric energy, a group of consumers, and an area to which the customer belongs, and time zone information requesting reduction of electric energy. Including
Based on the customer specific information, determine whether or not to discharge the storage battery in response to the power saving request,
Identifying the second time zone based on the time zone information;
The power supply and demand control method according to claim 1. Furthermore,
From the administrator who manages the storage battery, accepting an instruction of the time period for discharging the storage battery and the amount of discharge power to be discharged in the time period,
Determine whether to discharge the storage battery according to the instructions,
If it is determined not to discharge the storage battery according to the instructions,
Causing the storage battery to discharge the first discharge energy during the first time period, causing the storage battery to discharge the second discharge energy during the second time period,
If it is determined to discharge the storage battery according to the instructions,
Discharging the storage battery according to the instructions,
The power management method according to claim 1. Furthermore,
Accepts instructions from the administrator who manages the storage battery,
Specifying the first time zone according to the instruction;
The power management method according to claim 1. There are a plurality of consumers constituting the consumer group, and the plurality of consumers are residents of an apartment house,
The storage battery is a shared storage battery used by the plurality of consumers constituting the consumer group, and the shared storage battery is provided in the collective housing,
In the housing complex,
For each of the plurality of consumers, a door-to-door storage battery that supplies power to a load group used by the consumer is provided,
When the determined discharge power amount of the shared storage battery is less than the desired power amount as the first discharge power amount,
Each of the door-to-door storage batteries is discharged,
The power amount desirable as the first discharge power amount is a power amount that is greater than the difference between the power demand of the consumer group in the first time zone and the predetermined threshold value,
When the second discharge power amount is less than the desired power amount as the second discharge power amount,
Each of the door-to-door storage batteries is discharged,
A desirable power amount as the second discharge power amount is an amount of power that satisfies the power saving request.
The power management method according to claim 2 or 3. For each of the door-to-door storage batteries, perform an initial setting to set the maximum value of the time zone and discharge energy amount that allows discharge in the door-to-door storage battery,
The discharge of each of the door-to-door storage batteries is determined based on the initial setting of the door-to-door storage battery,
The power management method according to claim 10. The start time of the second time zone is a time before the start time of the first time zone,
The power management method according to claim 2. Measure the amount of power supplied from commercial power to the consumer,
When the measured electric energy is larger than a predetermined electric energy,
Supplying power generated by a power generation device or power generated by a solar power generation device to the consumer;
Limiting power supplied from commercial power to the consumer;
Urge the consumer to reduce power consumption,
Performing at least one of the processes,
The power management method according to claim 1. By supplying electric power by discharging the storage battery of each of the plurality of consumers to each of the load groups used by the consumer group composed of a plurality of consumers, the power is supplied from the commercial power source to the entire load group of the consumer group. A power management method performed in a power management system that adjusts the amount of power to be
Obtaining power demand of the consumer group,
A time zone in which the power demand exceeds a predetermined threshold is specified as a first time zone,
When receiving a power saving request for requesting reduction of the amount of power supplied from the commercial power source to the consumer group from the manager of the commercial power source, the time zone requested to be deleted is identified as the second time zone,
For each of the storage batteries of the plurality of consumers, based on the remaining charge of the entire storage battery of the plurality of consumers, a first discharge power amount that is discharged in the first time zone, and a discharge in the second time zone Determine the second discharge energy to be
Discharging the first discharge power amount to each of the storage batteries in the first time zone, and discharging the second discharge power amount to each of the storage batteries in the second time zone;
Power management method. A power management system that adjusts the amount of power supplied from a commercial power source to the load group by discharging the storage battery and supplying power to the load group used by the customer group consisting of one or more consumers,
An acquisition unit for acquiring the power demand of the consumer group;
A time zone in which the power demand exceeds a predetermined threshold is specified as a first time zone,
A specification that identifies the time zone requested to be deleted as the second time zone when a manager of the commercial power source receives a power saving request to reduce the amount of power supplied to the consumer group from the commercial power source. And
A determination unit that determines a first discharge power amount to be discharged in the first time zone and a second discharge power amount to be discharged in the second time zone, based on a remaining charge of the storage battery;
An instruction unit that causes the storage battery to discharge the first discharge power amount in the first time period, and causes the storage battery to discharge the second discharge power amount in the second time period;
A power management system comprising: A power management device that adjusts the amount of power supplied from a commercial power source to the load group by discharging the storage battery and supplying power to the load group used by the customer group consisting of one or more consumers,
An acquisition unit for acquiring the power demand of the consumer group;
A time zone in which the power demand exceeds a predetermined threshold is specified as a first time zone,
A specification that identifies the time zone requested to be deleted as the second time zone when a manager of the commercial power source receives a power saving request to reduce the amount of power supplied to the consumer group from the commercial power source. And
A determination unit that determines a first discharge power amount to be discharged in the first time zone and a second discharge power amount to be discharged in the second time zone, based on a remaining charge of the storage battery;
A power management apparatus comprising: an instruction unit that causes the storage battery to discharge the first discharge electric energy during the first time period and causes the storage battery to discharge the second discharge electric energy during the second time period. A program executed in a power management apparatus that adjusts the amount of power supplied from a commercial power supply to the load group by discharging the storage battery and supplying power to the load group used by the consumer group consisting of one or more consumers Because
In the power management device,
Obtaining power demand of the consumer group,
A time zone in which the power demand exceeds a predetermined threshold is specified as a first time zone,
When receiving a power saving request for requesting reduction of the amount of power supplied from the commercial power source to the consumer group from the manager of the commercial power source, the time zone requested to be deleted is identified as the second time zone,
Based on the remaining charge of the storage battery, a first discharge power amount to be discharged in the first time zone and a second discharge power amount to be discharged in the second time zone are determined,
Causing the storage battery to discharge the first discharge energy during the first time period, and causing the storage battery to discharge the second discharge energy during the second time period;
A program that lets you do that.

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