JPWO2018078802A1 - POWER MANAGEMENT SYSTEM, CONTROL DEVICE, AND POWER MANAGEMENT METHOD - Google Patents

Abstract

The power management system (1) manages storage of power generated by a power generation facility of one customer in a storage facility shared by a plurality of consumers including one customer. In the power management system (1), the notification unit (230) notifies one consumer of the usage information of the storage facility. The receiving unit (240) receives, from one customer, a storage instruction to store the generated power in the storage facility, or a supply instruction to supply the storage power of the storage facility to a power consumption place of the one consumer. The storage control unit (350) stores the generated power in the storage facility when the receiving unit (240) receives the storage instruction, and stores the generated power in the storage facility when the receiving unit (240) receives the supply instruction. Supply to consumption areas.

Description

  The present invention relates to a power management system, a controller, and a power management method.

  BACKGROUND ART In recent years, technology for utilizing renewable energy represented by solar light and wind power has attracted attention, and a consumer often owns a power generation facility that generates electric power using renewable energy. Such a consumer can consume power generated by the power generation facility by himself, and can supply surplus power to the commercial power grid and sell it to the electric power company. For example, Patent Document 1 discloses a system in which a power manager buys power generated by an individual using a renewable energy.

  By the way, the purchase price of surplus power tends to decrease in recent years. When the purchase price of surplus power falls, it is more desirable for the customer who owns the power generation facility to store the surplus power in the storage facility and to consume it when needed rather than selling the surplus power Be However, owning a storage facility by a customer is a high threshold due to reasons such as cost and location.

  For such a problem, for example, Patent Document 2 discloses a power network system that enables sharing of a power storage device and can store power even if the user does not own the power storage device.

Patent No. 5794603 JP, 2013-169137, A

  There are problems in effectively using the storage facility shared by a plurality of customers as described above. For example, when the time zone which uses an electrical storage installation among a plurality of consumers overlaps, a part of consumer may be unable to use an electrical storage installation. In addition, it is not easy for the consumer to know the appropriate timing to use the storage facility. From the above, there is a demand for more effective use of storage facilities shared by a plurality of consumers.

  The present invention has been made to solve the problems as described above, and it is an object of the present invention to provide a power management system and the like which can effectively utilize storage facilities shared by a plurality of consumers. Do.

In order to achieve the above object, a power management system according to the present invention is:
What is claimed is: 1. A power management system that manages storage of power generated by a power generation facility of one customer to a power storage facility shared by a plurality of consumers including the one customer,
Reporting means for reporting usage information of the storage facility to the one consumer;
Reception means for receiving from the one consumer a storage instruction to store the generated power in the storage facility, or a supply instruction to supply the stored power of the storage facility to a power consumption site of the one consumer;
When the receiving unit receives the storage instruction, the storage facility stores the generated electric power, and when the receiving unit receives the supply instruction, the storage facility supplies the stored power to the power consumption place. And storage control means.

  In the present invention, the power management system notifies one customer of usage information of the power storage facility shared by a plurality of customers, and a storage instruction for storing power generated by the power generation facility of the one customer in the storage facility. Alternatively, when a power supply instruction for supplying storage power of a storage facility to a power consumption site of one customer is received from one customer and the storage instruction is received, the storage facility stores the generated power and receives the supply instruction If it does, the storage equipment is made to supply stored power to the power consuming place. Therefore, according to the present invention, it is possible to effectively utilize a storage facility shared by a plurality of customers.

A diagram showing an overall configuration of a power management system according to an embodiment of the present invention Diagram showing configuration of in-home system Block diagram showing hardware configuration of control device Block diagram showing the hardware configuration of the management server Block diagram showing functional configuration of control device and management server Figure showing an example of measurement data of supplied power and generated power Figure showing an example of transition of power consumption and generated power Diagram showing an example of the transition of the charge for storage of electricity to storage facilities and the storage rate Figure showing an example of the transition of the power withdrawal price from electricity storage equipment and the purchase price Diagram showing an example of calculation data of withdrawal fee Diagram showing an example of notification when surplus power is generated Diagram showing an example of notification when the house needs to supply power Diagram showing an example of management data recorded at the time of deposit of power Diagram showing an example of management data recorded when drawing power Flow chart showing the flow of processing executed by the control device and the management server in the charge storage phase Flow chart showing the flow of processing executed by the control device and the management server in the discharge phase A diagram showing a first configuration of a power management system in a modification The figure which shows the 2nd composition of the power management system in a modification

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals.

  FIG. 1 shows the entire configuration of a power management system 1 according to an embodiment of the present invention. The power management system 1 is a system that manages power used in general homes, and is a system called a so-called HEMS (Home Energy Management System). As shown in FIG. 1, the power management system 1 manages the power in the house H of the customer A, a management server 10 that manages the entire power management system 1, power storage facilities S1 to S3 capable of charging and discharging power, and And an in-home system 20.

  The power management system 1 is a storage facility S1 to S3 shared by a plurality of customers A, B, C, ... including the customer A, of the power generated by the power generation facility 5 of the customer A who is one customer. Manage the storage of electricity. A plurality of consumers A, B, C,... Are, for example, residents, owners or managers of power consumption areas such as houses, facilities, buildings or factories, and the power consumption areas different from each other. Are the people who demand the power they consume.

  As shown in FIG. 1, the customer A owns the power generation facility 5 for generating power by solar light, but does not own a power storage facility for storing generated power. On the other hand, the consumers B and C own both of the power generation facility and the storage facility.

  In the power management system 1, the management server 10, the storage facilities S1 to S3, and the in-home system 20 are communicably connected via the wide area network N. The wide area network N is, for example, the Internet, and relays transmission and reception of information among the management server 10, the power storage facilities S1 to S3, and the home system 20. In FIG. 1, thick solid lines represent power lines through which power flows, and thin solid lines represent communication lines through which communication data flow. The same applies to the following figures.

  The management server 10 is a server operated by a power company and is a server for causing the power management system 1 to function in cooperation with the in-home system 20. An electric power supplier is an operator who buys and sells electric power with respect to a plurality of customers including customers A, B and C. The electric power company is, for example, an existing electric power company that owns a power generation facility and a power transmission network, a new electric power company that does not own a power transmission network by itself, or a power aggregator that mediates buying and selling of electric power.

  The management server 10 can sell the power supplied from the commercial power system to a plurality of consumers including the consumers A, B and C, and purchase surplus power generated in the power consumption areas of the plurality of consumers. Can. In addition, the management server 10 can store surplus power generated in power consumption areas of a plurality of customers in the storage facilities S1 to S3, and the power stored in the storage facilities S1 to S3 is a plurality of customers. Power consumption can be supplied to. Thereby, a plurality of consumers can deposit surplus power in the storage facilities S1 to S3. Details of the management server 10 will be described later.

  The storage facility S1 is a shared facility that is not owned by a specific customer. The storage facility S1 is managed by a power company operating the management server 10, and stores surplus power generated at power consumption sites of a plurality of customers.

  On the other hand, the storage facilities S2 and S3 are private facilities owned by specific customers B and C, respectively, but can be shared by customers other than the customers B and C. The storage facilities S2 and S3 are installed in the premises of the customers B and C, respectively, and store surplus power generated at power consumption sites of a plurality of customers including the customers B and C. The customers B and C have agreed to share the storage facilities S2 and S3 with other customers by a contract with the power company who operates the management server 10.

  Although not shown in the drawings, each of the storage facilities S1 to S3 includes a storage battery and a power conversion device. The storage battery is a stationary storage battery or an electric vehicle (EV: Electric Vehicle), and is, for example, a Ni-Cd battery, a nickel hydrogen battery, a lithium ion battery or a lead storage battery.

  The power converter includes an AC-DC converter that converts AC power and DC power to each other, a transformer that converts DC power voltage, and a switching element that converts power. Further, although not shown in the drawings, the power conversion apparatus includes a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), a communication interface, a readable and writable nonvolatile semiconductor memory, and the like.

  The power conversion device acquires a charge / discharge command from the management server 10 via the wide area network N, performs power conversion according to the obtained command, and charges or discharges the storage battery. Specifically, during charging, the power converter converts AC power supplied from the outside into DC power and charges the storage battery, and when discharging converts the DC power discharged from the storage battery into AC power. Supply to the outside. In addition, the power conversion device monitors the storage amount and storage rate of the storage battery and notifies the management server 10 via the wide area network N.

  The in-home system 20 is a system that manages the power consumed in the house H of the customer A who does not have a storage facility. The house H is a so-called general residential building, and is a demand place (power consumption place) of the power supplied from the commercial power system and the storage facilities S1 to S3.

  The configuration of the in-home system 20 is shown in FIG. As shown in FIG. 2, the in-home system 20 measures electric power, a control device 2 that centrally controls the entire in-home system 20, an operation terminal 3 that is a user interface, a power generation facility 5 that generates electric power by sunlight. A power measurement device 6 and a plurality of electric devices 7a, 7b, ... that consume power are provided.

  The control device 2 is an information collecting unit which is installed at an appropriate place in the house H which is a power consumption place, and collects information transmitted from each device installed in the house H via the wireless network. The control device 2 is, for example, a HEMS controller that can integrally control the devices installed in the house H. The control device 2 monitors the power consumed in the house H, and displays the power consumption status via the operation terminal 3. Details of the control device 2 will be described later.

  The operation terminal 3 is, for example, a mobile device such as a smartphone, a tablet terminal, a remote control, a mobile phone, or a laptop computer. The operation terminal 3 includes an input unit such as a push button, a touch panel, or a touch pad, a display unit such as an organic EL (Electro-Luminescence) display or a liquid crystal display, and a communication interface. The operation terminal 3 communicates with the control device 2 in accordance with a known communication standard such as Wi-Fi (registered trademark), Wi-SUN (registered trademark), or a wired LAN (Local Area Network). The operation terminal 3 receives an operation from the user, and transmits information indicating the received operation content to the control device 2. In addition, the operation terminal 3 receives the information transmitted from the control device 2 to be presented to the user, and displays the received information. Thus, the operation terminal 3 plays a role as a user interface.

  The power generation facility 5 is a facility which is installed in the house H and generates power by solar light which is natural energy. While the commercial power system supplies power to an unspecified number of power consuming places including the house H, the power generation facility 5 is a house which is owned by a specific power consuming place consumer and is a specific power consuming place It is a facility that supplies power to H. Such a power generation facility 5 is also referred to as a distributed power supply.

  The power generation facility 5 includes a PV panel 13 that performs photovoltaic power generation (PV: Photovoltaic), and a PV-PCS 14 that is a power conditioning system for PV. The PV panel 13 is, for example, a polycrystalline silicon solar panel. The PV panel 13 is installed on the roof of the house H, and generates solar power by converting solar energy into electric energy.

  The PV-PCS 14 receives the supply of power generated by the PV panel 13 and outputs the supplied power to the distribution board 9 via the power line D2. At that time, the PV-PCS 14 converts the power supplied from the PV panel 13 from DC power to AC power at a prescribed conversion efficiency so as to be usable in the house H and outputs it.

  Although not illustrated, the PV-PCS 14 includes a CPU, a ROM, a RAM, a communication interface, a readable and writable nonvolatile semiconductor memory, and the like. Also, the PV-PCS 14 communicates with the control device 2 via a wireless network built in the house H. This wireless network is, for example, a network by Wi-Fi (registered trademark), infrared communication, or ECHONET Lite.

  Power measuring device 6 includes power P1 transmitted through power line D1 disposed between commercial power grid and storage facilities S1 to S3 and distribution board 9, and between PV-PCS 14 and distribution board 9 The value of the electric power P2 transmitted to the power line D2 disposed in The power measurement device 6 is connected to a CT (Current Transformer) 1 connected to the power line D1 and a CT2 connected to the power line D2 via a communication line. CT1 and CT2 are sensors that measure alternating current.

  The power P1 measured by the power measurement device 6 corresponds to the power (supply power) supplied to the house H from the commercial power grid or the storage facilities S1 to S3. The power P2 is generated by the power generation facility 5 and corresponds to the power (generated power) output from the PV-PCS 14. The sum of the power P1 and the power P2 corresponds to the total power consumption of the house H by the plurality of electric devices 7a, 7b, and so on. That is, if the total power consumption of the house H is represented as P3, the relationship of P3 = P1 + P2 is materialized. In addition, the total power consumption of the house H is demonstrated as what contains the electric power consumed not only in the house H but in the premises of the house H. Below, the total power consumption is simply referred to as "power consumption".

  The power measuring device 6 includes a CPU, a ROM, a RAM, a communication interface, a readable and writable non-volatile semiconductor memory, and the like, though not shown. In addition, the power measurement device 6 includes a wireless communication interface, and communicates with the control device 2 via the above-described wireless network built in the house H.

  The power measuring device 6 generates measurement data in which the values of the electric power P1 and the electric power P2 obtained by the measurement are stored as measurement values, and periodically transmits the measurement data to the control device 2 in a predetermined cycle. The measurement data to be transmitted also stores the device address of the power measurement device 6, the ID (Identification) of the power line D1 and the power line D2, the measurement time, and the like. The power measurement device 6 may generate measurement data storing measurement values of the power P1 and the power P2 in response to a request from the control device 2 and transmit the measurement data to the control device 2.

  Each of the plurality of electrical devices 7a, 7b,... Is a device which is installed in a house H (including its site) which is a power consumption place and consumes power in the house H. Each of the plurality of electric devices 7a, 7b,... Is, for example, an induction heating (IH) cooking heater (electromagnetic cooker), a washing machine, a home appliance such as a television or a refrigerator, or an air conditioner, a hot water heater, a lighting device or a ventilation fan Equipment equipment, etc. The plurality of electric devices 7a, 7b,... Are respectively connected to the power lines D4, D5,... Branched by the distribution board 9, and operate with the power supplied from the commercial power system or the storage facilities S1 to S3.

  Each of the plurality of electrical devices 7a, 7b, ... has a wireless communication interface, and communicates with the control device 2 via the above-described wireless network built in the house H. Each of the plurality of electrical devices 7a, 7b,... May be connected to this wireless network via an external communication adapter (not shown). Each of the plurality of electric devices 7a, 7b,... Responds to a request from the control device 2 and wirelessly stores data (operation state data) storing the device ID, the current time, and information indicating the current operation state. It transmits to the control apparatus 2 via a network.

  The distribution board 9 includes a power measuring device 6 and a plurality of electric devices 7a, 7b, ..., etc., the electric power P1 supplied from the commercial power system or the storage facilities S1 to S3 and the electric power P2 generated by the power generation facility 5. And a wiring board for distributing the Moreover, the distribution board 9 is provided with the breaker which interrupts | blocks an electric current at the time of abnormality.

  Next, hardware configurations of the control device 2 and the management server 10 in the power management system 1 will be described with reference to FIGS. 3 and 4. As shown in FIG. 3, the control device 2 includes a control unit 21, a storage unit 22, a clock unit 23, an in-home communication unit 24, and an outside communication unit 25. These units are connected via a bus 29.

  The control unit 21 includes a CPU, a ROM, a RAM, and the like, although not shown. The CPU is also referred to as a central processing unit, a central processing unit, a processor, a microprocessor, a microcomputer, or a digital signal processor (DSP). In the control unit 21, the CPU reads the program and data stored in the ROM, and uses the RAM as a work area to centrally control the control device 2.

  The storage unit 22 is, for example, a nonvolatile semiconductor memory such as a flash memory, an EPROM (Erasable Programmable ROM), or an EEPROM (Electrically Erasable Programmable ROM), and plays a role as a so-called secondary storage device (auxiliary storage device). . The storage unit 22 stores various programs and data used by the control unit 21 to perform various processes, and various data generated or acquired by the control unit 21 performing various processes.

  The clock unit 23 includes a real time clock (RTC), and is a clock device that continues clocking even while the power of the control device 2 is off.

  The in-home communication unit 24 includes a communication interface for communicating with devices in the premises of the house H. The in-home communication unit 24 controls the PV-PCS 14, the power measuring device 6, and the plurality of electric devices 7a, 7b, ... via the above-described wireless network built in the house H under the control of the control unit 21. Communicate with each other. The in-home communication unit 24 communicates with the operation terminal 3 via the Wi-Fi (registered trademark), the Wi-SUN (registered trademark), a wired LAN, or the like under the control of the control unit 21.

  The out-of-home communication unit 25 includes a communication interface for connecting to the wide area network N. The out-of-home communication unit 25 communicates with devices outside the house H including the management server 10 via the wide area network N under the control of the control unit 21.

  As shown in FIG. 4, the management server 10 includes a control unit 31, a storage unit 32, a clock unit 33, and a communication unit 34. These units are connected via a bus 39.

  The control unit 31 includes a CPU, a ROM, a RAM, and the like, although not shown. The CPU is also called a central processing unit, a central processing unit, a processor, a microprocessor, a microcomputer or a DSP. In the control unit 31, the CPU reads the program and data stored in the ROM, and centrally controls the management server 10 using the RAM as a work area.

  The storage unit 32 is, for example, a non-volatile semiconductor memory such as a flash memory, an EPROM, or an EEPROM, and plays a role as a so-called secondary storage device (auxiliary storage device). The storage unit 32 stores various programs and data used by the control unit 31 to perform various processes, and various data generated or acquired by the control unit 31 performing various processes.

  The clock unit 33 includes an RTC, and is a clock device that continues clocking even while the power of the management server 10 is off.

  The communication unit 34 includes a communication interface for connecting to the wide area network N. The communication unit 34 communicates with devices outside the management server 10 including the control device 2 of the in-home system 20 and the power storage facilities S1 to S3 and the like via the wide area network N under the control of the control unit 31.

  Although not shown in FIG. 4, the management server 10 may have a user interface including an input unit that receives an operation input from a user and a display unit that displays an image.

  Subsequently, functional configurations of the control device 2 and the management server 10 in the power management system 1 will be described with reference to FIG. As shown in FIG. 5, the control device 2 functionally includes a measurement value acquisition unit 210, a usage information acquisition unit 220, a notification unit 230, a reception unit 240, and a request transmission unit 250. In addition, the management server 10 functionally includes a storage amount acquisition unit 310, a charge calculation unit 320, a usage information transmission unit 330, a request reception unit 340, and a storage control unit 350.

  Each of these functions is realized by software, firmware, or a combination of software and firmware. The software and the firmware are described as a program, and are stored in the ROM or the storage unit 22 of the control device 2 and the ROM or the storage unit 32 of the management server 10. Then, in the control unit 21 of the control device 2, the CPU executes the program stored in the ROM or the storage unit 22 to realize the functions of the respective units of the control device 2. In addition, in the control unit 31 of the management server 10, the CPU executes a program stored in the ROM or the storage unit 32 to realize the functions of the units of the management server 10.

  Further, the control device 2 includes a measurement DB (Database) 290. The measurement DB 290 is constructed in an appropriate storage area of the storage unit 22. The management server 10 includes a management DB 390. The management DB 390 is constructed in an appropriate storage area of the storage unit 32.

  In the control device 2, the measured value acquisition unit 210 is generated by the power (supply power) P 1 supplied to the house H from the commercial power grid or storage facilities S 1 to S 3 and the power generation facility 5 and is output from the PV-PCS 14 The measured value of the generated power (generated power) P2 is acquired. The powers P1 and P2 are measured by the power measurement device 6 via the CT1 connected to the power line D1 and the CT2 connected to the power line D2, as described above.

  The power measurement device 6 periodically transmits the measurement values of the powers P1 and P2 obtained by the CT1 and CT2 to the control device 2 in a predetermined cycle. The predetermined cycle is, for example, about 10 seconds to several tens of seconds. Alternatively, the measurement value acquisition unit 210 transmits a request for measurement values of the powers P1 and P2 to the power measurement device 6 as necessary, and the measurement values of the powers P1 and P2 are in a method in which the power measurement device 6 responds to this request. May be sent to the control device 2.

  As described above, the measurement value acquisition unit 210 acquires the measurement values of the powers P1 and P2 obtained by the power measurement device 6 from the power measurement device 6 via the in-home communication unit 24. The measurement value acquisition unit 210 is realized by the control unit 21 cooperating with the in-home communication unit 24.

  The measurement DB 290 stores the measurement values of the powers P1 and P2 acquired by the measurement value acquisition unit 210. The measurement DB 290 stores the history of the supplied power P1 and the generated power P2 by storing the acquired measurement value each time the measurement value acquiring unit 210 acquires the measurement values of the powers P1 and P2.

  A specific example of measurement data stored in the measurement DB 290 is shown in FIG. As shown in FIG. 6, the measurement DB 290 stores the amount of power of the supplied power P1 and the amount of power of the generated power P2 in chronological order. The amount of power is an integrated value of power over a predetermined time. When the measurement value acquisition unit 210 acquires the measurement values of the powers P1 and P2, the measurement value acquisition unit 210 calculates the amount of power of the powers P1 and P2 and sequentially stores them in the measurement DB 290.

  Returning to FIG. 5, in the control device 2, the usage information acquisition unit 220 acquires usage information of the power storage facilities S <b> 1 to S <b> 3 from the management server 10. The usage information of the storage facilities S1 to S3 is information on the usage of the storage facilities S1 to S3 and is information serving as a determination reference for determining whether the customer A uses the storage facilities S1 to S3. . Specifically, the usage information is information indicating the current state such as the storage amount or storage rate of the storage facilities S1 to S3 and the usage fee paid by the customer A to use the storage facilities S1 to S3. is there.

  The usage information acquisition unit 220 transmits a usage information acquisition request to the management server 10 via the outside-home communication unit 25 and the wide area network N according to the presence or absence of surplus power in the house H. Then, the usage information acquisition unit 220 acquires the usage information transmitted from the management server 10 as a response to the transmitted acquisition request via the outside-home communication unit 25 and the wide area network N. Thus, the usage information acquisition unit 220 is realized by the control unit 21 cooperating with the outside-home communication unit 25.

  The surplus power means power remaining without being consumed in the house H when the generated power P2 by the power generation facility 5 is larger than the consumed power P3 in the house H. Specifically, the surplus power corresponds to the power obtained by subtracting the power consumption P3 from the generated power P2.

  FIG. 7 shows the transition of the generated power P2 and the consumed power P3 in the house H on one day. In FIG. 7, the solid line represents the transition of the generated power P2, and the broken line represents the transition of the power consumption P3. The generated power P2 shows a large value in the daytime with a peak at noon when the amount of solar radiation increases. On the other hand, the power consumption P3 generally shows a large value from afternoon to evening when the amount of power consumption in the home increases.

  In the daytime from morning to evening, the generated power P2 is larger than the power consumption P3. Therefore, surplus power (P2-P3) is generated in the house H. The generated surplus power (P2-P3) is output to the outside of the house H through the power line D1. In this case, the supplied power P1 measured by the CT1 has a negative value.

  On the other hand, from evening to early morning, the generated power P2 is smaller than the power consumption P3. Therefore, the house H needs to be supplied with power from the outside. The required power (P3-P2) is externally supplied through the power line D1. In this case, the supplied power P1 measured by the CT1 has a positive value.

  The usage information acquisition unit 220 refers to the value of the supplied power P1 stored in the measurement DB 290, and determines whether surplus power is generated and whether the house H needs to be supplied with power from the outside. Do. Then, when the generated power P2 is larger than the consumed power P3, ie, surplus power is generated, for more than the first threshold time, the usage information acquisition unit 220 uses the generated power P2 as the storage facility S1 to S1 as the usage information. The first information for the customer A to select whether to store electricity in S3 is acquired from the management server 10.

  Specifically, the consumer A can obtain economic benefits by selling surplus power to the electric utility. Alternatively, the customer A can store the surplus power in one of the storage facilities S1 to S3 to store the surplus power, so that the surplus power can be stored in the power company. In other words, for example, when the selling price is low, the customer A temporarily deposits the surplus power in any of the storage facilities S1 to S3 which are shared facilities, and pulls out the deposited surplus power later. It can be consumed at house H. The usage information acquisition unit 220 acquires, from the management server 10, first information that serves as a criterion for determining whether to sell or store such surplus power.

  On the other hand, when the generated power P2 is smaller than the consumed power P3 over the second threshold time, that is, the house H needs to be supplied with power from the outside, the usage information acquisition unit 220 uses it as the usage information, The second information for the consumer A to select whether to supply the storage power of the storage facilities S1 to S3 to the house H is acquired from the management server 10.

  Specifically, the customer A can purchase power from the electric utility when the house H needs the supply of power from the outside, or the power previously stored in any of the storage facilities S1 to S3. Can also be pulled out. The usage information acquisition unit 220 acquires, from the management server 10, second information that serves as a criterion for determining whether to purchase power or to extract stored power.

  The first threshold time and the second threshold time are, for example, 5 minutes or 10 minutes, and are set in advance and stored in the ROM or the storage unit 22. The first threshold time and the second threshold time may be the same or different.

  The description returns to the functional configuration of the power management system 1 illustrated in FIG. In the management server 10, the storage amount acquisition unit 310 acquires the storage amount of the storage facilities S1 to S3. Specifically, the storage amount acquisition unit 310 communicates with the power conversion device provided in each of the storage facilities S1 to S3 via the communication unit 34 and the wide area network N. Then, in each of the storage facilities S1 to S3, the storage amount acquisition unit 310 acquires, from the power conversion device, information on the current storage amount stored in the storage battery. The storage amount acquisition unit 310 is realized by the control unit 31 cooperating with the communication unit 34.

  When the storage amount acquisition unit 310 acquires the storage amounts of the storage facilities S1 to S3, the storage amounts of the storage facilities S1 to S3 that can be shared can be totaled by summing up the storage amounts of the acquired storage facilities S1 to S3. calculate. Further, the storage amount acquisition unit 310 calculates the storage rate of the entire power storage facilities S1 to S3 by comparing the calculated remaining charge amount with the storage capacity of the entire power storage facilities S1 to S3. Thus, the storage amount acquisition unit 310 confirms the current usage status of the storage facilities S1 to S3 and how much electric power can be newly stored.

  The charge calculation unit 320 calculates usage charges of the power storage facilities S1 to S3. The usage fee is a fee paid by the customer A to the power provider when depositing power in any of the storage facilities S1 to S3 or drawing out power from any of the storage facilities S1 to S3. The charge calculation unit 320 is required to supply the first charge (deposition charge) necessary to store the generated power P2 (surplus power) in any of the storage facilities S1 to S3 and the stored power to the house H. And calculate the second charge (drawout charge). The charge calculation unit 320 is realized by the control unit 31.

  Specifically, charge calculating unit 320 stores, as the first charge, at least one of the storage amounts of power storage facilities S1 to S3 or a time zone for storing generated power P2 in any of power storage facilities S1 to S3. Calculate different charges according to. Further, charge calculation unit 320 supplies house H with the length of the period during which customer A was storing generated power P2 in any of storage facilities S1 to S3 or the stored power as the second charge. Calculate different charges depending on at least one of the time zones. Specifically, this will be described with reference to FIGS. 8 and 9.

  FIG. 8 shows the charge for storage of power to the power storage equipment S1 to S3, which is the first charge, together with the storage rate by time zone. The storage rate is an index indicating the storage amount of the storage facilities S1 to S3. As shown in FIG. 8, the storage rates of the storage facilities S1 to S3 show peaks from daytime to the evening when the amount of power generation by the power generation facility of each customer increases. When the storage rate increases, the free capacity of the storage facilities S1 to S3, that is, the amount that can be stored anew decreases. Therefore, charge calculation unit 320 calculates the deposit fee so that the higher the power storage rate of power storage facilities S1 to S3 is, the higher the time zone for performing power storage will be at daytime higher than at night.

  In addition, as the amount of storage in the storage facilities S1 to S3 increases, the storage facilities S1 to S3 occupy more. Therefore, the charge calculation unit 320 sets, as the first charge, the charge per unit amount as high as the amount to be newly deposited increases. Specifically, as shown in FIG. 8, the charge calculation unit 320 sets the deposit fee B when the deposit amount is 10 kWh as a fee higher than the deposit fee A when the deposit amount is 5 kWh.

  FIG. 9 shows the charge for drawing out power from the storage equipment S1 to S3, which is the second charge, along with the purchase price for each time zone. The power purchase price is a price obtained when power is purchased from an electric power company without extracting power from the storage facilities S1 to S3. It is assumed that the purchase price is constant in all time zones. As shown in FIG. 9, the charge calculation unit 320 sets the draw-out charge lower than the purchase price so that the use of the power storage facilities S1 to S3 is more economical than purchase.

  Explaining in more detail, as shown in FIG. 10, the withdrawal fee has three elements: (1) average deposit fee, (2) incentive according to deposit period, and (3) incentive according to withdrawal time zone It is determined based on The average deposit fee is an average value of a plurality of deposit fees when the customer A deposits power in any of the storage facilities S1 to S3 multiple times.

  The incentive according to the deposit period is a value that fluctuates according to the length of the period in which the customer A has stored the generated power P2 in any of the storage facilities S1 to S3. For example, depositing power for a long period of time occupies the storage facilities S1 to S3 and also causes loss of stored power. Therefore, the charge calculation unit 320 sets an incentive such that the consumer A is economically lost as the deposit period is longer. In other words, the charge calculation unit 320 sets the withdrawal charge so that the longer the period in which the customer A stores the generated power P2 in any one of the storage facilities S1 to S3, the longer it becomes.

  The charge calculation unit 320 acquires information on the deposit period of the customer A with reference to the management data of the customer A stored in the management DB 390. In addition, when the consumer A deposits the power in any one of the storage facilities S1 to S3 a plurality of times, the charge calculation unit 320 calculates an incentive using an average of the plurality of deposit periods.

  The incentive according to the withdrawal time zone is a value that fluctuates according to the time zone in which the stored power is supplied to the house H. For example, from daytime to evening, the storage rate and storage residual amount of the storage facilities S1 to S3 become high. In this case, it is recommended to draw out the stored power positively because the free capacity of the storage facilities S1 to S3 is reduced. Therefore, as shown in FIG. 9, the charge calculation unit 320 sets an incentive so that the demander A economically obtains the withdrawal time zone from day to night. In other words, the charge calculation unit 320 sets the withdrawal charge so that the time period for supplying the storage power to the house H is lower in the daytime than in the night.

  The description returns to the functional configuration of the power management system 1 illustrated in FIG. In the management server 10, the use information transmission unit 330 transmits the use information of the power storage facilities S1 to S3 to the control device 2. When the use information transmission unit 330 receives the acquisition request for the use information transmitted from the use information acquisition unit 220 of the control device 2, the use information transmission unit 330 receives the use information of the storage facilities S1 to S3 via the communication unit 34 and the wide area network N. Transmit to control device 2. The usage information transmission unit 330 is realized by the control unit 31 cooperating with the communication unit 34.

  Specifically, when the surplus power is generated in the house H, the usage information transmitting unit 330 selects, as the usage information, whether or not the generated power P2 is stored in the storage facilities S1 to S3 by the customer A. To the control device 2. The first information includes information of the storage rate acquired by the storage amount acquisition unit 310 and information of the first charge (depositing charge) calculated by the charge calculation unit 320.

  On the other hand, if the use information transmission unit 330 needs the supply of power from the outside to the house H, the consumer requests whether the storage power of the storage facilities S1 to S3 is to be supplied to the house H as use information. The second information for A to select is transmitted to the control device 2. The second information includes the second charge (drawout charge) calculated by the charge calculation unit 320 and information on the remaining charge amount of the customer A. The storage residual amount of the customer A is the total amount of power that the customer A has deposited in the past in any one of the storage facilities S1 to S3 and means the amount of power that can be extracted from the storage facilities S1 to S3. The usage information transmitting unit 330 acquires information on the remaining charge amount of the customer A with reference to the management data of the customer A stored in the management DB 390.

  In control device 2, notification unit 230 notifies customer A of the usage information of power storage facilities S1 to S3. The notification unit 230 transmits the usage information acquired by the usage information acquisition unit 220 to the operation terminal 3 by communicating with the operation terminal 3 via the in-home communication unit 24. Then, the notification unit 230 displays a notification image shown in FIG. 11 or 12 on the display unit of the operation terminal 3. The notification unit 230 is realized by the control unit 21 cooperating with the in-home communication unit 24.

  Specifically, the notification unit 230 reports, as the use information, at least one of a charge for using the power storage facilities S1 to S3 or information indicating a storage amount of the power storage facilities S1 to S3. Specifically, the information indicating the storage amount of the storage facilities S1 to S3 is the storage rate or the storage residual amount of the storage facilities S1 to S3.

  Describing in more detail, when the generated power P2 is larger than the consumed power P3, that is, when the surplus power is generated in the house H, the notification unit 230 uses the generated power P2 as any of the storage facilities S1 to S3 as the usage information. The first information for the customer A to select whether or not to store electricity is reported. Specifically, the notification unit 230 displays the notification image illustrated in FIG. 11 on the display unit of the operation terminal 3.

  As illustrated in FIG. 11, the notification unit 230 notifies that “deposit” and “power sale” can be selected as the response to the surplus power. In addition, notification unit 230 notifies the storage rates and the storage charges of power storage facilities S1 to S3 acquired from management server 10 as the first information. Thus, the customer A can easily confirm the current status of the storage facilities S1 to S3 and the cost necessary for depositing surplus power.

  In addition, the notification unit 230 notifies the selling price in the case of selling surplus power together with the deposit fee. By notifying the deposit fee and the sale price, the customer A can decide whether to deposit or sell the surplus power while comparing which of the deposit and the sale is better.

  On the other hand, when the generated power P2 is smaller than the consumed power P3, that is, when it is necessary to supply power to the house H, the annunciator unit 230 demands whether the stored power is supplied to the house H as usage information. The second information for the house A to select is notified. Specifically, the notification unit 230 displays a notification image shown in FIG. 12 on the display unit of the operation terminal 3.

  As illustrated in FIG. 12, the notification unit 230 notifies that “drawout” and “purchase” can be selected as a method of power supply. Further, the notification unit 230 notifies of the remaining charge amount of the customer A and the withdrawal fee acquired from the management server 10 as the second information. As a result, the customer A can easily check the amount of power that can be drawn from the storage facilities S1 to S3 and the cost necessary for drawing out the stored power.

  In addition, the notification unit 230 notifies the power purchase price in the case of power purchase along with the withdrawal fee. By notifying the withdrawal fee and the purchase price, the customer A can decide whether to draw or buy the stored electric power while comparing which of the withdrawal and the purchase is better. For example, when the withdrawal fee is significantly lower than the purchase price, it can be determined that the customer A should draw stored power rather than purchase.

  Returning to FIG. 5, reception unit 240 supplies a storage instruction to store generated power P 2 (surplus power) in any of storage facilities S 1 to S 3, or supply of stored power of storage facilities S 1 to S 3 to house H An instruction is received from customer A. The customer A can input a storage instruction or a supply instruction via the input unit of the operation terminal 3.

  Specifically, when surplus power is generated in the house H, the customer A sells “deposit”, which is a storage instruction, as a response to the surplus power while looking at the notification image shown in FIG. It is possible to select "power sale" which is a power instruction.

  In addition, the customer A can indicate the storage amount by inputting a numerical value in the item of “the amount of deposit” in FIG. Since the deposit fee differs depending on the deposit amount, the notification unit 230 updates the deposit fee in FIG. 11 each time the receiving unit 240 receives an input of a new deposit amount from the customer A, and copes with the new deposit amount. Report the deposit fee to be paid.

  On the other hand, when it is necessary to supply power to the house H, the customer A sees the notification image shown in FIG. "Purchasing" can be selected. Further, the customer A designates a supply amount of power from the stored power to the house H within the range of the remaining amount of storage of the customer A by inputting numerical values in the item of “amount of withdrawal” in FIG. be able to.

  The reception unit 240 communicates with the operation terminal 3 via the in-home communication unit 24. Thereby, the reception unit 240 receives, via the operation terminal 3, the storage instruction, the supply instruction, the power sale instruction, or the power purchase instruction input from the customer A to the operation terminal 3. Thus, the reception unit 240 is realized by the control unit 21 cooperating with the in-home communication unit 24.

  When the reception unit 240 receives the storage instruction, the request transmission unit 250 transmits, to the management server 10, a storage request for storing the generated power P2 in any of the storage facilities S1 to S3. The storage request is a request for the management server 10 to charge any one of the storage facilities S1 to S3 in accordance with the storage instruction received from the customer A. The storage request includes information on the deposit amount (storage amount) received from the customer A.

  On the other hand, when the reception unit 240 receives a supply instruction, the request transmission unit 250 transmits, to the management server 10, a supply request for supplying storage power to the house H to any of the storage facilities S1 to S3. The supply request is a request for the management server 10 to discharge any of the power storage facilities S1 to S3 in accordance with the supply instruction received from the customer A. The supply request includes the information of the withdrawal amount (supply amount) received from the customer A.

  The request transmission unit 250 transmits the storage request or the supply request to the management server 10 via the external communication unit 25 and the wide area network N. The request transmission unit 250 is realized by the control unit 21 cooperating with the outside-home communication unit 25.

  In the management server 10, the request reception unit 340 receives, via the communication unit 34, the storage request or the supply request transmitted from the request transmission unit 250 of the control device 2. The request receiving unit 340 is realized by the control unit 31 cooperating with the communication unit 34.

  When the request receiving unit 340 receives a storage request, the storage control unit 350 stores any of the generated power P2 in any of the storage facilities S1 to S3. Specifically, the storage control unit 350 refers to the free capacity of each of the storage facilities S1 to S3 to specify at least one storage facility that can newly store electric power from among these. Then, the storage control unit 350 transmits a charge command to the power conversion device provided in the identified storage facility via the communication unit 34 and the wide area network N. Thus, the surplus power generated in the house H is stored in the storage battery of the storage facility. The storage control unit 350 is realized by the control unit 31 cooperating with the communication unit 34.

  When the storage amount of surplus power reaches the instructed deposit amount, storage control unit 350 causes the storage facility to finish charging. If surplus power remains in the house H, the remaining surplus power is sold. If the surplus power disappears before the storage amount reaches the instructed deposit amount, the storage control unit 350 causes the storage facility to finish charging at that time.

  After storing the surplus power, the storage control unit 350 records management data of the customer A in the management DB 390. As illustrated in FIG. 13, the management DB 390 is a management data in which a consumer name, a storage date, a storage amount, a storage destination, and a storage fee are associated with each consumer using any of the storage facilities S1 to S3. I remember. The storage control unit 350 records such information on the newly stored power and the customer in the management DB 390 every time the surplus power is stored, and leaves a history of storage.

  On the other hand, when the request receiving unit 340 receives a supply request, the storage control unit 350 causes any one of the storage facilities S1 to S3 to supply storage power to the house H. Specifically, the power storage control unit 350 specifies at least one power storage facility in which the power of the customer A is stored among the power storage facilities S1 to S3 with reference to the management DB 390. Then, the storage control unit 350 transmits a discharge command to the power conversion device provided in the identified storage facility via the communication unit 34 and the wide area network N. Thus, the power stored in the storage battery of the storage facility is supplied to the house H.

  When the discharge amount reaches the instructed withdrawal amount, the storage control unit 350 causes the storage facility to finish discharging. If the house H still requires power, the necessary power is obtained by purchasing electricity. In addition, when the storage electric power of the customer A remains after discharge, the customer A can select again whether to extract the storage electric power or to buy power.

  When the stored power is drawn, the storage control unit 350 records management data of the customer A in the management DB 390. As illustrated in FIG. 14, the management DB 390 manages, for each customer who has extracted stored power, the customer name, the remaining amount of power, the average deposit fee, the incentive according to the deposit period, and the average deposit period I have stored data. The storage control unit 350 records information about the newly extracted power and the customer in the management DB 390 every time when the stored power is drawn, and leaves a history of the storage.

  The flow of processing executed in the power management system 1 configured as described above will be described with reference to the flowcharts shown in FIGS. 15 and 16.

  FIG. 15 shows the flow of processing executed by the control device 2 and the management server 10 in the power storage phase in which the power storage facilities S1 to S3 are charged with surplus power in the house H. In the control device 2, the control unit 21 determines whether surplus power has been generated for the first threshold time or more (step S101).

  Specifically, the control unit 21 refers to the value of the supplied power P1 acquired from the power measurement device 6 by the measurement value acquisition unit 210 and stored in the measurement DB 290. Then, the control unit 21 determines whether or not the supplied power P1 is a negative value, that is, whether or not power is output from the house H to the outside. When the supplied power P1 is a negative value, the control unit 21 determines that surplus power is generated.

  When the surplus power is generated over the first threshold time (step S101; YES), the control unit 21 shifts to the processing of the storage phase after step S102. On the other hand, when the surplus power is not generated for the first threshold time or more (step S101; NO), the control unit 21 does not shift to the process of the storage phase.

  After shifting to the processing of the storage phase, the control unit 21 requests the management server 10 for usage information (step S102). Specifically, the control unit 21 requests the first information acquisition request for the customer A to select whether or not the surplus power is stored in the storage facilities S1 to S3, as well as the outside communication unit 25 and the wide area. It transmits to the management server 10 via the network N. In steps S101 and S102, the control unit 21 functions as the usage information acquisition unit 220.

  In the management server 10, the control unit 31 acquires the storage amount (step S201). Specifically, the control unit 31 communicates with the power conversion device provided in each of the power storage facilities S1 to S3 to acquire the storage amount of each of the power storage facilities S1 to S3. Then, control unit 31 calculates the remaining charge amount and the storage ratio of all the commonly available storage facilities S1 to S3 based on the acquired storage amount. In step S201, the control unit 31 functions as a storage amount acquisition unit 310.

  When the storage amount is acquired, the control unit 31 calculates a charge for use (step S202). Specifically, the control unit 31 sets the surplus power according to at least one of the storage amount of the storage facilities S1 to S3 or the time zone for storing the generated power P2 in any of the storage facilities S1 to S3. A first charge (depositing charge) required to store power in any one of storage facilities S1 to S3 is calculated. In addition, the control unit 31 controls the length of a period in which the customer A stores the generated power P2 in any one of the storage facilities S1 to S3 or at least one of the time zones in which the stored power is supplied to the house H. In response, a second charge (extraction charge) required to supply stored power to house H is calculated. In step S202, the control unit 31 functions as a charge calculation unit 320.

  The control unit 31 executes the process of acquiring the storage amount in step S201 and the process of calculating the charge in step S202 in a predetermined cycle. Thereby, control unit 31 periodically updates the storage amount and usage charge of power storage facilities S1 to S3 to the latest information.

  Subsequently, when the control unit 2 requests the use information from the control device 2 in step S102, the control unit 31 transmits the use information to the control device 2 as the request source (step S203). Specifically, the control unit 31 uses, as the usage information, the first information indicating the storage rates of the power storage facilities S1 to S3 obtained in step S201 and the deposit fee calculated in step S202 as the communication unit. It is transmitted to the control device 2 via V. 34 and the wide area network N. In step S203, the control unit 31 functions as the usage information transmission unit 330.

  In the control device 2, when the usage information is transmitted from the management server 10 in step S203, the control unit 21 acquires the transmitted usage information. When the usage information is acquired, the control unit 21 notifies the acquired usage information (step S103). Specifically, as shown in FIG. 11, the control unit 21 causes the display unit of the operation terminal 3 to display a notification image including the storage rates of the storage facilities S1 to S3, the deposit fee, and the selling price. In step S103, the control unit 21 functions as the notification unit 230.

  After notifying the use information of the storage equipment S1 to S3, the control unit 21 determines whether or not the storage instruction has been received (step S104). Specifically, the control unit 21 determines whether or not an instruction to store the surplus power of the house H in any of the storage facilities S1 to S3 is received from the customer A via the operation terminal 3. In step S104, the control unit 21 functions as the receiving unit 240.

  When the storage instruction is received (step S104; YES), the control unit 21 requests the management server 10 to store power in the storage facilities S1 to S3 (step S105). Specifically, the control unit 21 transmits a storage request for storing the surplus power in any of the storage facilities S1 to S3 to the management server 10 via the outside-home communication unit 25 and the wide area network N. In step S105, the control unit 21 functions as the request transmission unit 250.

  On the other hand, when the storage instruction has not been received (step S104; NO), the control unit 21 skips the process of step S105. Specifically, the case where the storage instruction is not received corresponds to the case where the power sale instruction to sell the surplus power is received or when no instruction is received.

  In the management server 10, when receiving the storage request transmitted from the control device 2, the control unit 31 stores the surplus power in any of the storage facilities S1 to S3 (step S204). Specifically, the control unit 31 transmits a charge instruction to the power conversion device of at least one power storage facility capable of storing power among the power storage facilities S1 to S3. Thereby, the control unit 31 stores the surplus power generated in the house H in the storage facility up to the instructed amount. In step S204, the control unit 31 functions as a storage control unit 350.

  After storing the surplus power, the control unit 31 updates the management data of the customer A stored in the management DB 390 (step S205). Specifically, the control unit 31 records the information regarding the newly stored power and the consumer in the management data illustrated in FIG. Thus, the process in the storage phase ends.

  FIG. 16 shows the flow of processing executed by the control device 2 and the management server 10 in the discharge phase in which the power stored in the storage facilities S1 to S3 is discharged to the house H. In the control device 2, the control unit 21 determines whether or not the state where the power supply to the house H is required continues for the second threshold time or more (step S301).

  Specifically, the control unit 21 refers to the value of the supplied power P1 acquired from the power measurement device 6 by the measurement value acquisition unit 210 and stored in the measurement DB 290. Then, the control unit 21 determines whether the supplied power P1 is a positive value, that is, whether the power is supplied to the house H from the outside. When the supplied power P1 is a positive value, the control unit 21 determines that the house H needs power supply.

  When the state where the power supply to the house H is required continues for the second threshold time or more (step S301; YES), the control unit 21 proceeds to the process of the discharge phase after step S302. On the other hand, when the state where the power supply to the house H is required does not continue for the second threshold time or more (step S301; NO), the control unit 21 does not shift to the processing of the discharge phase.

  After shifting to processing of the discharge phase, the control unit 21 requests the management server 10 for usage information (step S302). Specifically, the control unit 21 requests the second information acquisition request for the customer A to select whether the storage power of the storage facilities S1 to S3 is to be supplied to the house H or not by the outside communication unit. 25 to the management server 10 via the wide area network N. In steps S301 and S302, the control unit 21 functions as the usage information acquisition unit 220.

  In the management server 10, the control unit 31 acquires the storage amount (step S401), and calculates the usage charge (step S402). The processes of steps S401 and S402 are the same as steps S201 and S202 in the storage phase. The control unit 31 executes the process of acquiring the storage amount in step S401 and the process of calculating the charge in step S402 in a predetermined cycle. Thereby, control unit 31 periodically updates the storage amount and usage charge of power storage facilities S1 to S3 to the latest information.

  Subsequently, when the control unit 2 requests the use information from the control device 2 in step S302, the control unit 31 transmits the use information to the control device 2 of the request source (step S403). Specifically, the control unit 31 uses the communication unit 34 and the wide area network N as the usage information, for the deposit fee calculated in step S402 and the second information indicating the remaining charge amount of the customer A. And transmit to the control device 2. In step S403, the control unit 31 functions as the usage information transmission unit 330.

  In the control device 2, when the usage information is transmitted from the management server 10 in step S403, the control unit 21 acquires the transmitted usage information. When the usage information is acquired, the control unit 21 notifies the acquired usage information (step S303). Specifically, as illustrated in FIG. 12, the control unit 21 causes the display unit of the operation terminal 3 to display a notification image including the remaining charge amount of the customer A, the withdrawal fee, and the purchase price. In step S303, the control unit 21 functions as the notification unit 230.

  After notifying the use information of the power storage facilities S1 to S3, the control unit 21 determines whether or not the supply instruction has been received (step S304). Specifically, the control unit 21 determines whether or not an instruction to supply storage power of any one of the storage facilities S1 to S3 to the house H is received from the customer A via the operation terminal 3. In step S304, the control unit 21 functions as the receiving unit 240.

  When the supply instruction has been received (step S304; YES), the control unit 21 requests the management server 10 to supply stored power (step S305). Specifically, the control unit 21 transmits a supply request to cause any one of the storage facilities S1 to S3 to supply the storage power to the house H to the management server 10 via the outside communication unit 25 and the wide area network N. Do. In step S305, the control unit 21 functions as the request transmission unit 250.

  On the other hand, when the supply instruction has not been received (step S304; NO), the control unit 21 skips the process of step S305. Specifically, the case where the supply instruction is not received corresponds to the case where the power purchase instruction for purchasing the necessary power is received or when no instruction is received.

  In the management server 10, when receiving the supply request transmitted from the control device 2, the control unit 31 causes the house H to supply stored power (step S404). Specifically, the control unit 31 transmits a discharge command to the power conversion device of at least one storage facility of the storage facilities S1 to S3 in which the power of the customer A is stored. Thereby, the control unit 31 supplies the stored power of the storage facility to the house H up to the instructed amount. In step S404, the control unit 31 functions as a storage control unit 350.

  When the stored power is extracted, the control unit 31 updates the management data of the customer A stored in the management DB 390 (step S405). Specifically, the control unit 31 records the newly extracted power and information on the customer in the management data illustrated in FIG. Thus, the processing in the discharge phase is completed.

  As described above, the power management system 1 according to the present embodiment includes the storage facilities S1 to S3 shared by a plurality of customers A, B, C, ... of the power generated by the power generation facility 5 of the customer A. In the system for managing power storage, usage information of the power storage facilities S1 to S3 is notified to the customer A. Then, the power management system 1 requests a storage instruction to store the generated power in any of the storage facilities S1 to S3 or a supply instruction to supply the stored power of any of the storage facilities S1 to S3 to the house H. When received from A and receives a storage instruction, the generated power is stored in any of storage facilities S1 to S3. When a supply instruction is received, storage power is supplied to house H to any of storage facilities S1 to S3. .

  By reporting the use information of the storage facilities S1 to S3, the customer A can determine whether to use the storage facilities S1 to S3 with reference to the use information. For example, the customer A can know the appropriate timing to use the power storage facilities S1 to S3, such as whether to store or sell surplus power, or to draw or buy stored power. Moreover, when the time slot | zone which utilizes electrical storage equipment S1-S3 overlaps with several consumers A, B, C, ..., it can reduce that an electrical storage service is not received.

  As described above, the customer A can effectively use the power storage facilities S1 to S3. As a result, even the customer A who does not own the storage facilities S1 to S3 can store the surplus power in the storage facilities S1 to S3 and can draw out and consume it when necessary. You can expand the range of usage. Further, by notifying the usage charge and controlling the demands of the plurality of customers A, B, C,..., It is possible to prevent concentration of the time zone in which the storage facilities S1 to S3 are used. Therefore, the effect that the power storage facilities S1 to S3 can be operated efficiently can be obtained even for the power manager.

(Modification)
As mentioned above, although embodiment of this invention was described, in implementation of this invention, the deformation | transformation and application by various forms are possible.

  For example, in the above-described embodiment, the storage facilities S1 to S3 are facilities that store power in chargeable and dischargeable storage batteries. However, in the present invention, the storage facility may store power by converting power into heat in a heat storage device such as a water heater, for example. The heat storage device stores electricity by boiling hot water with excess power. In this case, the heated water can not be converted back to electricity, but the power that would have been needed to boil the water in the future can be consumed for other applications. Therefore, storing electricity in the heat storage equipment corresponds to storing electricity indirectly. As described above, in the present invention, the power storage facility may be a facility that converts power into another form and indirectly stores the power.

  In the present invention, the power consumption place is not limited to a general house such as the house H described above, but may be a collective house, a facility, a building or a factory. Further, the power generation facility 5 is not limited to solar light, and may generate power using other renewable energy such as wind power or geothermal heat.

  In the present invention, the deposit fee and the withdrawal fee, which are the usage fees of the storage facilities S1 to S3, may be determined by the contract between the customer and the electric power company. For example, the contract amount is determined in advance between the customer and the power company. The charge calculation unit 320 may set an inexpensive charge when the storage amount is smaller than the contract amount as the usage charge, and may set an expensive charge when the storage amount is larger than the contract amount.

  In the present invention, when a plurality of power companies can be used, the customer A can select a power company that deposits surplus power among the plurality of power companies. Specifically, in the power management system 1 a shown in FIG. 17, the customer A can deposit surplus power with the power company A and the power company B. In this case, the control device 2 in the house H acquires, from the management server 10a, the usage information of the storage facility managed by the power company A, and acquires the usage information of the storage facility managed by the power company B from the management server 10b. . Then, the control device 2 notifies both of the acquired two pieces of use information. As a result, the customer A can select a power provider who deposits surplus power while comparing the two usage information.

  In the above embodiment, storage control unit 350 controls charging / discharging of storage facilities S1 to S3 in accordance with the storage instruction or supply instruction received by reception unit 240 from customer A. However, in the present invention, the storage control unit 350 may control charging / discharging of the storage facilities S1 to S3 according to the demand input from the customer A in advance according to the situation. For example, when the receiving unit 240 receives a request from the customer A for suppressing the purchase and sale of power by using the storage facilities S1 to S3 as much as possible, the storage control unit 350 can perform surplus power in the storage phase. As far as possible, the storage facilities S1 to S3 are stored, and in the discharge phase, stored power is supplied to the house H as much as possible. Alternatively, when reception unit 240 receives a request from customer A that the customer A draws the stored power on the condition that the difference between the withdrawal fee and the purchase price is greater than the threshold, the storage control unit 350 performs the discharge phase as follows: The stored power is supplied to the house H when the difference between the withdrawal fee and the purchase price is larger than the threshold.

  In the above embodiment, the operation terminal 3 includes the display unit and the input unit, and the control device 2 acquires the input information input to the operation terminal 3 via the wireless or wired communication, and operates the display information. Sent to terminal 3 and displayed. However, in the present invention, the control device 2 may include the display unit and the input unit. That is, the control device 2 itself may have the function of the operation terminal 3. In this case, the notification unit 230 displays the notification image shown in FIGS. 11 and 12 not via the operation terminal 3 but via the display unit provided in the control device 2. Further, the receiving unit 240 receives an instruction not through the operation terminal 3 but through an input unit provided in the control device 2. Further, the notification unit 230 is not limited to displaying the notification image shown in FIG. 11 and FIG. 12 on the display unit, and by outputting the content of this notification image by voice, the usage information of the storage facilities S1 to S3 is It can also be informed.

  Further, in the above embodiment, the control device 2 installed in the house H includes the measured value acquisition unit 210, the usage information acquisition unit 220, the notification unit 230, the reception unit 240, and the request transmission unit 250. The management server 10 installed outside the house H includes a storage amount acquisition unit 310, a charge calculation unit 320, a usage information transmission unit 330, a request reception unit 340, and a storage control unit 350. It was equipped. However, in the present invention, the above-described function of the control device 2 may be provided in the management server 10, or the above-described function of the management server 10 may be provided in the control device 2. In other words, either the control device 2 or the management server 10 may function as the above-described power management system 1.

  FIG. 18 illustrates an example in which the control device 2 is not installed in the house H. In the power management system 1b and the in-home system 20b shown in FIG. 18, the router 12 replaces the control device 2 with the operation terminal 3, the power generation facility 5, the power measurement device 6, and the plurality of electric devices 7a, 7b,. It is communicably connected and relays communication between each device. The management server 10 functions as the notification unit 230 and the reception unit 240 in the above embodiment by communicating with the operation terminal 3 via the router 12.

  Further, the control device 2 may include at least one of the storage amount acquisition unit 310, the charge calculation unit 320, the storage control unit 350, and the management DB 390 in the above-described embodiment. When the control device 2 has the function of the storage control unit 350, the control device 2 directly sends the storage device S1 to any one of the storage facilities S1 to S3 via the management server 10 or not via the management server 10. Send a charge or discharge command. Thereby, the control device 2 stores the generated power P2 in any one of the storage facilities S1 to S3 or supplies the stored power to the house H in any of the storage facilities S1 to S3.

  In the above embodiment, in the control unit 21 of the control device 2, the CPU executes a program stored in the ROM or the storage unit 22 to obtain the measurement value acquisition unit 210, the usage information acquisition unit 220, the notification unit 230, and the reception. It functions as each of the unit 240 and the request transmission unit 250. Further, in the control unit 31 of the management server 10, the CPU executes a program stored in the ROM or the storage unit 32 to obtain the storage amount acquisition unit 310, the charge calculation unit 320, the usage information transmission unit 330, and the request reception unit 340. And each function as the storage control unit 350. However, in the present invention, the control unit 21 and the control unit 31 may be dedicated hardware. The dedicated hardware is, for example, a single circuit, a complex circuit, a programmed processor, an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a combination thereof. When the control unit 21 and the control unit 31 are dedicated hardware, each function of each unit may be realized by individual hardware, or functions of each unit may be realized collectively by a single hardware. .

  Also, among the functions of each unit, a part may be realized by dedicated hardware, and another part may be realized by software or firmware. As described above, the control units 21 and 31 can realize the respective functions described above by hardware, software, firmware, or a combination thereof.

  By applying an operation program that defines the operation of the control device 2 or the management server 10 according to the present invention to a computer such as an existing personal computer or an information terminal device, the computer can be referred to as the control device 2 or the management server according to the present invention It is also possible to function as 10.

  Also, the distribution method of such a program is arbitrary, and for example, a computer readable record such as a CD-ROM (Compact Disk ROM), a DVD (Digital Versatile Disk), an MO (Magneto Optical Disk), or a memory card. It may be stored in a medium and distributed, or may be distributed via a communication network such as the Internet.

  The present invention is capable of various embodiments and modifications without departing from the broad spirit and scope of the present invention. In addition, the embodiment described above is for explaining the present invention, and does not limit the scope of the present invention. That is, the scope of the present invention is indicated not by the embodiments but by the claims. And, various modifications applied within the scope of the claims and the meaning of the invention are considered to be within the scope of the present invention.

  The present invention can be suitably adopted in a system for managing power and the like.

1, 1a, 1b power management system, 2 control devices, 3 operation terminals, 5 power generation equipment, 6 power measurement devices, 7a, 7b electric equipment, 9 distribution board, 10, 10a, 10b management server, 12 routers, 13 PV Panel, 14 PV-PCS, 20, 20b indoor system, 21 control unit, 22 storage unit, 23 clock unit, 24 indoor communication unit, 25 external communication unit, 29 bus, 31 control unit, 32 storage unit, 33 clock unit , 34 communication unit, 39 bus, 210 measurement value acquisition unit, 220 usage information acquisition unit, 230 notification unit, 240 reception unit, 250 request transmission unit, 290 measurement DB, 310 storage amount acquisition unit, 320 charge calculation unit, 330 use Information transmission unit, 340 request reception unit, 350 storage control unit, 390 management DB, D1 to D5 power line, H house, N wide area network, S1, S2, S3 storage equipment

In order to achieve the above object, a power management system according to the present invention is:
What is claimed is: 1. A power management system that manages storage of power generated by a power generation facility of one customer to a power storage facility shared by a plurality of consumers including the one customer,
Reporting means for reporting usage information of the storage facility to the one consumer;
Reception means for receiving from the one consumer a storage instruction to store the generated power in the storage facility, or a supply instruction to supply the stored power of the storage facility to a power consumption site of the one consumer;
When the receiving unit receives the storage instruction, the storage facility stores the generated electric power, and when the receiving unit receives the supply instruction, the storage facility supplies the stored power to the power consumption place. for example Bei a power storage control means, the,
When the generated electric power is larger than the consumed electric power at the electric power consuming place, the informing means selects, as the usage information, whether the one customer stores the electric generated electric power in the electric storage facility or not. Broadcast 1 information.

Claims (15)

What is claimed is: 1. A power management system that manages storage of power generated by a power generation facility of one customer to a power storage facility shared by a plurality of consumers including the one customer,
Reporting means for reporting usage information of the storage facility to the one consumer;
Reception means for receiving from the one consumer a storage instruction to store the generated power in the storage facility, or a supply instruction to supply the stored power of the storage facility to a power consumption site of the one consumer;
When the receiving unit receives the storage instruction, the storage facility stores the generated electric power, and when the receiving unit receives the supply instruction, the storage facility supplies the stored power to the power consumption place. Storage control means;
Power management system. The notification unit reports, as the usage information, at least one of a charge for the storage device and information indicating an amount of storage of the storage device.
The power management system according to claim 1. When the generated electric power is larger than the consumed electric power at the electric power consuming place, the informing means selects, as the usage information, whether the one customer stores the electric generated electric power in the electric storage facility or not. Report 1 information,
The power management system according to claim 1. The notification unit reports, as the first information, a first charge necessary to store the generated power in the storage facility.
The power management system according to claim 3. The notification unit reports, as the first charge, a charge different depending on at least one of a storage amount of the storage facility or a time zone in which the generated power is stored in the storage facility.
The power management system according to claim 4. When the generated power is larger than the power consumption, the notification unit reports a selling price together with the first charge.
The power management system according to claim 4 or 5. When the generated power is smaller than the consumed power at the power consuming place, the notification means selects, as the usage information, whether the one consumer is to supply the stored power to the power consuming place or not. Report the second information,
The power management system according to any one of claims 1 to 6. The notification unit notifies, as the second information, a second charge necessary to supply the stored power to the power consumption place.
The power management system according to claim 7. The notification means has a length of a period during which the one customer stores the generated power in the storage facility as the second charge, or a time zone in which the stored power is supplied to the power consumption place Inform different rates according to at least one of
The power management system according to claim 8. When the generated power is smaller than the consumed power, the notifying unit reports a purchase price together with the second charge.
The power management system according to claim 8 or 9. The power management system includes a control device and a management server,
The controller is
The notification means;
The reception means;
When the receiving unit receives the storage instruction, the storage server transmits a storage request for storing the generated power to the storage facility, and when the receiving unit receives the supply instruction, the storage unit stores the storage instruction. Request transmission means for transmitting a supply request for supplying power to the power consumption site to the management server;
The management server is
Request receiving means for receiving the storage request or the supply request transmitted from the control device;
The storage control means;
The storage control unit causes the storage facility to store the generated power when the request receiving unit receives the storage request, and the storage unit stores the generated power when the request receiving unit receives the supply request. Supply the electricity to the power consumption site,
The power management system according to any one of claims 1 to 10. The controller is
The information processing apparatus further comprises usage information acquisition means for acquiring the usage information from the management server,
The notification unit notifies the one consumer of the usage information acquired by the usage information acquisition unit.
The power management system according to claim 11. The use information acquisition means determines whether the generated power is stored in the storage facility as the use information when the generated power is larger than the consumed power at the power consuming place over the first threshold time or more. When the first information for selecting the one customer is acquired from the management server and the generated power is smaller than the power consumption for a second threshold time or more, the storage of electricity as the usage information is performed. Acquiring, from the management server, second information for the one consumer to select whether to supply power to the power consumption site;
A power management system according to claim 12. A control device for controlling storage of power generated by a power generation facility of one customer to a storage facility shared by a plurality of consumers including the one customer,
Reporting means for reporting usage information of the storage facility to the one consumer;
Reception means for receiving from the one consumer the storage instruction for charging the generated power to the storage facility, or a supply instruction for discharging the stored power of the storage facility to a power consuming place of the one consumer;
When the receiving unit receives the storage instruction, the storage facility is charged with the generated power, and when the receiving unit receives the supply instruction, the storage facility discharges the stored power to the power consumption place. Storage control means;
Control device. Reporting usage information of a storage facility shared by a plurality of consumers to one of the plurality of consumers;
When an instruction to store power generated by the power generation facility of the one customer in the storage facility is received from the one customer, the power storage facility stores the generated power.
When an instruction to supply storage power of the storage facility to a power consumption site of the one consumer is received from the one consumer, the storage facility is caused to supply the stored power to the power consumption district.
Power management method.

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