CN113124451A - Electric load grading optimization capacity-increasing-free control system and method for coal-to-electric heating - Google Patents
Electric load grading optimization capacity-increasing-free control system and method for coal-to-electric heating Download PDFInfo
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- CN113124451A CN113124451A CN202110431197.4A CN202110431197A CN113124451A CN 113124451 A CN113124451 A CN 113124451A CN 202110431197 A CN202110431197 A CN 202110431197A CN 113124451 A CN113124451 A CN 113124451A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1096—Arrangement or mounting of control or safety devices for electric heating systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
- H02J3/144—Demand-response operation of the power transmission or distribution network
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/08—Electric heater
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
- Y04S20/244—Home appliances the home appliances being or involving heating ventilating and air conditioning [HVAC] units
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Abstract
The invention discloses a system and a method for controlling electric load grading optimization without capacity increase of coal-to-electric heating, and relates to a system and a method for controlling electric load grading optimization without capacity increase of electric heating. The invention aims to solve the problems of large total amount of electric load, high power failure probability, low equipment operation efficiency and high electric power capacity increasing cost in the conventional village and town coal-to-electricity heating mode. The method specifically comprises the following steps: the temperature information real-time acquisition module is used for monitoring the real-time temperature in the room and transmitting the real-time temperature to the instruction processing and sending module; the electric power information real-time acquisition module is used for acquiring the current running electric power of a user and transmitting the electric power to the instruction processing and sending module; the temperature comparison module is used for acquiring a comparison result and transmitting the comparison result to the instruction processing and sending module; the electric power judgment module is used for acquiring a comparison result and transmitting the comparison result to the instruction processing and sending module; the instruction processing and sending module is used for receiving information and controlling the opening of the electric appliances corresponding to the first-level load, the second-level load and the third-level load. The invention is used for the field of electric load grading optimization non-capacity-increasing control.
Description
Technical Field
The invention relates to a grading optimization non-capacity-increasing control system and method for electric load of electric heating.
Background
At present, the engineering of changing coal into electricity is developed in provinces and cities of China, and becomes an important measure for saving energy and protecting environment. Compared with the traditional heating mode, the electric heating mode has the characteristics of high energy utilization rate, cleanness, environmental protection, low operation cost, capability of considering factors such as peak-valley electricity price and the like to reduce cost, small occupied area, convenience in installation and laying and the like. However, with the wide spread of the engineering of 'coal to electricity', unprecedented challenges are brought to the power supply quality and the safety of a power distribution network. One of the most significant reasons for limiting the application of conventional electric heating technology is the total amount of load that can be provided by the power supply company. When a general power supply company plans and sets the positions and loads of the switching stations in the early period, the total power consumption of each residential block is limited according to the prediction of the power consumption of the traditional residential block.
The household electricity has the maximum power number which can be borne in the actual operation process. Because the original building power design is designed according to the national standard building power distribution, the distribution load of the building power distribution design cannot meet the maximum capacity required by electric heating. Therefore, electric capacity increase is required. The power capacity increase refers to that in the process of production and operation of a power consumer, because the demand of production capacity is enlarged, the power capacity (usually calculated according to the capacity of a transformer, and the unit is KVA) used in the original application cannot meet the demand of production and operation, and the capacity must be applied and increased on the original basis. However, the cost of electric capacity increase is high, and the capacity increase equipment is idle in the non-heating period, which also causes a certain waste.
The total load of the power system is the sum of the total power consumed by all the electric devices in the system. In household electricity, because household appliances with a large amount of high power are widely used due to improvement of the living standard at present, and power consumed by electric heating is added, the total power of the household appliances is often more than the maximum power of the household.
Disclosure of Invention
The invention aims to solve the problems of large total amount of electric loads, high power-off probability, low equipment operation efficiency and high electric power capacity increasing cost in the conventional village and town coal-to-electricity heating mode, and provides a system and a method for controlling the electric loads of the coal-to-electricity heating mode in a grading optimization and capacity-increasing-free mode.
The electric load grading optimization non-capacity-increasing control system for coal-to-electric heating comprises: the device comprises a temperature information real-time acquisition module, an electric power information real-time acquisition module, a temperature comparison module, an electric power utilization judgment module and an instruction processing and sending module;
the temperature information real-time acquisition module is used for monitoring the real-time temperature in the room and transmitting the real-time temperature to the instruction processing and sending module and the temperature comparison module;
the electric power information real-time acquisition module is used for acquiring the current running power consumption, voltage and current information of a user and transmitting the information to the instruction processing and transmitting module and the power consumption power judgment module;
the temperature comparison module is used for acquiring a comparison result of the room temperature measured by the temperature information real-time acquisition module and the set temperature and transmitting the comparison result to the instruction processing and sending module;
the electric power judgment module is used for obtaining a comparison result of the total power consumption of the current operation of the user and the maximum household allowed power consumption and transmitting the comparison result to the instruction processing and sending module;
the instruction processing and sending module is used for receiving the room temperature monitored by the temperature information real-time acquisition module in real time, receiving the information acquired by the electric power information real-time acquisition module, receiving the information acquired by the temperature comparison module, receiving the information acquired by the electric power judgment module and controlling the opening of the electric appliances corresponding to the first-level load, the second-level load and the third-level load.
The method for controlling the grading optimization of the electrical load of the coal-to-electricity heating without capacity increase comprises the following specific processes:
step one, when the electric power information real-time acquisition module cannot monitor the existence of the secondary load, the temperature comparison module compares the room temperature measured by the temperature information real-time acquisition module with a set temperature:
if the temperature in the room measured by the temperature information real-time acquisition module is less than the set temperature, the electric heating heater is started to input heat to the room so as to increase the temperature of the room, and the electric heating heater is closed until the temperature in the room is equal to the set temperature;
if the temperature in the room monitored by the temperature information real-time acquisition module is greater than or equal to the set temperature, the electric heating heater is turned off;
step two, when the electric power information real-time acquisition module monitors that a secondary load exists, the electric heating heater is turned off, the temperature comparison module compares the temperature in the room measured by the temperature information real-time acquisition module with a set temperature, and if the temperature in the room is less than the set temperature, b is equal to 1; if the temperature in the room is greater than or equal to the set temperature, b is 0;
acquiring the current running power consumption of a user and the power consumption of an electric heating heater as the total power consumption to be run by the user;
the current running power of the user is as follows:
if the first-stage load exists, the current running power of the user is the sum of the first-stage load and the second-stage load;
if the first-level load does not exist, the current running power consumption of the user is the second-level load;
the electric power judgment module compares the total power consumption to be operated by the user with the maximum household allowed power consumption to obtain an electric power comparison result, and performs product operation on the electric power comparison result and a comparison result b of the temperature comparison module to determine whether to start a three-level load;
the primary load is a rigid load, and the rigid load is a type of load for maintaining the basic life needs of residents;
the class of loads for maintaining the basic life needs of residents is one or two of lighting lamps and the electricity loads of computers;
the secondary load is one, two, three, four, five, six or seven of the electric load of the electric water heater, the electric load of the electric hair drier, the electric load of the microwave oven, the electric load of the electric iron, the electric load of the electric kettle, the electric load of the electric rice cooker and the electric load of the electromagnetic oven;
the three-level load is the electric load for the electric heating heater.
The invention has the beneficial effects that:
the invention provides a grading optimization non-capacity-increasing control system and method for electrical loads of coal-to-electricity heating, aiming at solving the problems of large total amount of electrical loads, high power-off probability, low equipment operation efficiency and high electric power capacity increasing cost caused by coal-to-electricity heating in villages and towns. The method obtains all sources of the building electric load through statistics, research and collection, and divides the building electric load into a first-level rigid load, a second-level delay operation load and a third-level electric heating electric load according to the electric load electricity demand grade; a control function is established according to the actual power demand of the building, and a temperature information real-time acquisition module is used for acquiring the real-time temperature in a room; the electric power information real-time acquisition module is used for acquiring the current running electricity total power, voltage and current information of a resident; the temperature comparison module is used for comparing the temperature in the room measured by the temperature information real-time acquisition module with a set temperature: the power utilization judging module is used for comparing the total power utilization power of the current operation of the resident with the maximum power utilization power allowed by the household; the instruction processing and sending module is used for controlling the electric heating heater and the switches of the high-power electric appliances;
the principle of no-capacity-increasing control lies in that the heat storage capacity of the building is fully utilized, when a high-power electric appliance runs, whether the total power of electricity to be run exceeds the maximum power number of a family is judged firstly, and if the total power exceeds the maximum power number, the method of temporarily turning off an electric heating heater is adopted to realize the no-capacity-increasing control; when the total power consumption power to be operated does not exceed the maximum power number, the on-off of the electric heater is controlled by monitoring whether the indoor temperature reaches the set temperature or not.
In order to ensure that the capacity increase is avoided in the electric power, a switch of the high-power electric appliance is linked with an electric heating switch, the high-power electric appliance is turned on and simultaneously turns off the electric heating, and the on-off of the electric heating switch is judged through a series of controls.
The invention controls the total amount of the electric load to be less than the maximum power, avoids the power failure probability, improves the operation efficiency of each electric appliance, does not need electric capacity increase and has low cost.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a block diagram of the present invention;
FIG. 3 illustrates an electric heater start control method according to the present invention;
fig. 4 is a graph of the electrical load continuous variation time plotted.
Detailed Description
The first embodiment is as follows: the electric load grading optimization capacity-increasing-free control system for coal-to-electricity heating in the embodiment comprises: the device comprises a temperature information real-time acquisition module, an electric power information real-time acquisition module, a temperature comparison module, an electric power judgment module and a command processing and sending module;
as shown in fig. 2, the controller is installed on the total power line after the electric meter, and the controller includes a temperature information real-time acquisition module, an electric power information real-time acquisition module, a temperature comparison module, an electric power utilization determination module, and an instruction processing and transmitting module, and can monitor information such as voltage, current, and power of the total power line at any time, and in addition, judge temperature and power.
The temperature information real-time acquisition module is used for monitoring the real-time temperature in the room and transmitting the real-time temperature to the instruction processing and sending module and the temperature comparison module;
the electric power information real-time acquisition module is used for acquiring the current running power consumption, voltage and current information of a user and transmitting the information to the instruction processing and transmitting module and the power consumption power judgment module;
the temperature comparison module is used for acquiring a comparison result of the room temperature measured by the temperature information real-time acquisition module and the set temperature and transmitting the comparison result to the instruction processing and sending module;
the electric power judgment module is used for obtaining a comparison result of the total power consumption of the current operation of the user and the maximum household allowed power consumption and transmitting the comparison result to the instruction processing and sending module;
the instruction processing and sending module is used for receiving the room temperature monitored by the temperature information real-time acquisition module in real time, receiving the information acquired by the electric power information real-time acquisition module, receiving the information acquired by the temperature comparison module, receiving the information acquired by the electric power judgment module and controlling the opening of the electric appliances corresponding to the first-level load, the second-level load and the third-level load.
The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is that the real-time temperature information acquisition module is a temperature sensor.
Other steps and parameters are the same as those in the first embodiment.
The third concrete implementation mode: the difference between this embodiment and the first or second embodiment is that the electric power information real-time acquisition module detects current by using hall element AH3503, and detects voltage by using a voltage meter.
Other steps and parameters are the same as those in the first or second embodiment.
The fourth concrete implementation mode: the difference between this embodiment and one of the first to third embodiments is that the electric power determination module is an MSP430 single-chip microcomputer;
the instruction processing and sending module is a communication line built by using an MAX485 chip.
Other steps and parameters are the same as those in one of the first to third embodiments.
The fifth concrete implementation mode: the embodiment is described with reference to fig. 1 and 3, and the specific process of the electrical load grading optimization non-capacity-increasing control method for coal-to-electricity heating in the embodiment is as follows:
the following control functions are established according to the actual power consumption requirements of the building:
wherein, tinIndicating the real-time temperature, t, of the roomsetIndicating the indoor set temperature, ptRepresents the total power to be operated, i.e. the sum of the current power of the user and the power of the electric heating heater, pmaxRepresenting the maximum power number which can be borne by the power grid;
the connotation of the control function is as follows: when the secondary load does not exist, the controller controls the switch of the electric heater according to whether the room temperature reaches the set temperature or not, and the electric heater is turned off when the room temperature reaches the set temperature; otherwise, the electric heater is started to meet the three-level load. When the controller monitors that the secondary load exists, the temperature is judged firstly, and if the room temperature reaches the set temperature, the secondary load is directly started. If the room temperature does not reach the set temperature, then judging whether the total power of the household power consumption is less than the maximum power number, and if the total power of the household power consumption is less than the maximum power number, meeting three-level load; if the total power of the household power is larger than the maximum power, the household power can only meet the secondary load and cannot meet the tertiary load.
In order to prevent the phenomenon that the total power of the high-power electrical appliances exceeds the maximum power at the moment of starting, the switch of each high-power electrical appliance is linked with the switch of the electric heating electric heater, the switch of the electric heater is firstly closed at the moment of starting the high-power electrical appliances, and the control function is judged;
the high-power electric appliance is an electric water heater, an electric blower, a microwave oven, an electric iron, an electric kettle, an electric rice cooker or an electromagnetic oven;
the PL is a Primary load (Primary load); SL is a Secondary load (Secondary load); TL is a Third load;
step one, when the electric power information real-time acquisition module cannot monitor the existence of the secondary load, the temperature comparison module compares the room temperature measured by the temperature information real-time acquisition module with a set temperature:
if the temperature in the room measured by the temperature information real-time acquisition module is less than the set temperature, the electric heating heater is started to input heat to the room so as to increase the temperature of the room, and the electric heating heater is closed until the temperature in the room is equal to the set temperature;
if the temperature in the room monitored by the temperature information real-time acquisition module is greater than or equal to the set temperature, the electric heating heater is turned off;
step two, when the electric power information real-time acquisition module monitors that a secondary load exists, the electric heating heater is turned off, the temperature comparison module compares the temperature in the room measured by the temperature information real-time acquisition module with a set temperature, and if the temperature in the room is less than the set temperature, b is equal to 1; if the temperature in the room is greater than or equal to the set temperature, b is 0;
acquiring the current running power consumption of a user and the power consumption of an electric heating heater as the total power consumption to be run by the user;
the current running power of the user is as follows:
if the first-stage load exists, the current running power of the user is the sum of the first-stage load and the second-stage load;
if the first-level load does not exist, the current running power consumption of the user is the second-level load;
the electric power judgment module compares the total power consumption to be operated by the user with the maximum household allowed power consumption to obtain an electric power comparison result, and performs product operation on the electric power comparison result and a comparison result b of the temperature comparison module to determine whether to start a three-level load;
the first-level load is a rigid load, the rigid load is a type of load for maintaining the basic life requirements of residents, and if the operation condition of the type of load is changed, the lives of the residents are also seriously influenced, and the first-level load belongs to the rigid requirements;
the class of loads for maintaining the basic life needs of residents is one or two of lighting lamps and the electricity loads of computers;
the secondary load is one, two, three, four, five, six or seven of the electric load of the electric water heater, the electric load of the electric hair drier, the electric load of the microwave oven, the electric load of the electric iron, the electric load of the electric kettle, the electric load of the electric rice cooker and the electric load of the electromagnetic oven;
the three-level load is the electric load for the electric heating heater.
And ordering the satisfaction levels of the loads according to the priority levels of the load demands: the first-level load is guaranteed firstly, the second-level load is guaranteed secondly, and the third-level load is guaranteed finally.
The sixth specific implementation mode: the fifth embodiment is different from the fifth embodiment in that the electric power determination module compares the total power of the current running power of the user with the maximum household allowed power to obtain an electric power comparison result, and performs product operation on the electric power comparison result and the comparison result b of the temperature comparison module to determine whether to start the three-level load; the specific process is as follows:
when the total power consumption power of the current operation of a user is more than or equal to the maximum power consumption power allowed by a family, a is 0, and a multiplied by b is 0, namely, the three-level load is not satisfied, and the electric heating heater is not started;
when the total power consumption of the current operation of the user is less than the maximum power consumption allowed by the family, a is 1, and a x b is b, namely, whether the electric heater is started or not is judged only by the temperature, and three-level load is met.
The other steps and parameters are the same as those in the fifth embodiment.
The seventh embodiment: the fifth or sixth embodiment is different from the fifth or sixth embodiment in that whether the electric heater is turned on is determined only by the temperature, and the specific process is as follows:
if the temperature in the room measured by the temperature information real-time acquisition module is less than the set temperature, the electric heating heater is started to input heat to the room so as to increase the temperature of the room, and the electric heating heater is closed until the temperature in the room is equal to the set temperature;
and if the temperature in the room monitored by the temperature information real-time acquisition module is greater than or equal to the set temperature, the electric heating heater is turned off.
The other steps and parameters are the same as those of the fifth or sixth embodiment.
The specific implementation mode is eight: the difference between the fifth embodiment and the seventh embodiment is that the temperature information real-time acquisition module is used for monitoring the real-time temperature in the room and transmitting the real-time temperature to the instruction processing and sending module and the temperature comparison module;
the electric power information real-time acquisition module is used for acquiring the current running power consumption, voltage and current information of a user and transmitting the information to the instruction processing and transmitting module and the power consumption power judgment module;
the temperature comparison module is used for acquiring a comparison result of the room temperature measured by the temperature information real-time acquisition module and the set temperature and transmitting the comparison result to the instruction processing and sending module;
the electric power judgment module is used for obtaining a comparison result of the total power consumption of the current operation of the user and the maximum household allowed power consumption and transmitting the comparison result to the instruction processing and sending module;
the instruction processing and sending module is used for receiving the room temperature monitored by the temperature information real-time acquisition module in real time, receiving the information acquired by the electric power information real-time acquisition module, receiving the information acquired by the temperature comparison module, receiving the information acquired by the electric power judgment module and controlling the opening of the electric appliances corresponding to the first-level load, the second-level load and the third-level load.
Other steps and parameters are the same as those of one of the fifth to seventh embodiments.
The specific implementation method nine: the difference between this embodiment mode and the fifth to eighth embodiment mode is that the secondary load is a delay-operable load, that is, some high-power electricity loads;
the secondary load has great flexibility from when it starts, but once it starts running, it cannot be suspended in the meantime.
Reasonably planning the time for starting the load to run according to the operable time range of the secondary load, and optimizing the household power management;
among the household electrical appliances, there are electric water heaters, electric hair dryers, microwave ovens, electric irons, electric kettles, electric rice cookers, electromagnetic ovens, etc. as loads capable of delaying operation.
Other steps and parameters are the same as those of the fifth to eighth embodiments.
The detailed implementation mode is ten: the difference between this embodiment and one of the fifth to ninth embodiments is that the electrical appliance corresponding to the secondary load is linked with the electric heating heater switch, and the electric heater switch is firstly turned off at the moment when the electrical appliance corresponding to the secondary load is turned on.
Other steps and parameters are the same as those in one of the fifth to ninth embodiments.
The concrete implementation mode eleven: the difference between this embodiment and the fifth to tenth embodiment is that the electric appliance corresponding to the secondary load is an electric water heater, an electric blower, a microwave oven, an electric iron, an electric kettle, an electric rice cooker, or an electromagnetic oven.
Other steps and parameters are the same as those in one of the fifth to tenth embodiments.
The specific implementation mode twelve: the difference between this embodiment and one of the fifth to eleventh embodiments is that the first, second, and third level load ranks are:
the first-level load is guaranteed firstly, the second-level load is guaranteed secondly, and the third-level load is guaranteed finally.
Other steps and parameters are the same as those in one of the fifth to eleventh embodiments.
The following examples were used to demonstrate the beneficial effects of the present invention:
the constant-open electric appliances of village and town residents include refrigerators, televisions, incandescent lamps, fluorescent lamps, washing machines and the like, the sum of the power of the constant-open electric appliances is about 1000W, the common high-power equipment comprises an electric water heater (1000W, the service time is 20-21 o 'clock), an electric blower (2000W, the service time is 21 o' clock), a microwave oven (1000W, the service time is 19 o 'clock), an electric kettle (1800W, the service time is 7, 18 and 21 o' clock), an electric rice cooker (1000W, the service time is 18-19 o 'clock), an electromagnetic oven (1000W, the service time is 18-19 o' clock) and the like, and the power of the electric heater is 2000W, the service time is 0-9 o. The electric meters in the current general village and town household are 25(5) A and 50HZ, and the maximum current is 25 amperes. 220V × 25A is 5500W (power used for a short time). Considering that some electric appliances are used for one hour but not for a short time, the maximum power number of the users in the villages and the towns is determined to be 5000W.
The time chart of the continuous change of the electrical load is plotted according to the above conditions as shown in fig. 4.
When the indoor temperature is lower than the set temperature, the electric heater is started, the sum of the power of the electric heater and the power of the normally-open electric appliance is 3000W, a total load curve graph can be obtained by considering the common service time of the common electric appliances, one transverse line in the upper part of the graph is the maximum power number of users in villages and small towns, and the electric heating is temporarily closed when the total load exceeds a red line.
Because the power utilization behavior of the user is difficult to predict, if other electrical equipment is started at the same time, the total power number can easily reach the maximum power number.
As shown in fig. 4, when the high-power electric heating kettle is detected to be turned on at 7 hours, the electric heating heater is turned off first, the controller judges that the room temperature is lower than the set temperature and the total power consumption load is 4KW and less than the maximum power, and the three-level load can be satisfied, namely, the electric heating heater and the electric heating kettle are turned on.
And 9 hours of the system are in the working peak, the household electric heating heater is switched off, and the total electric load is a normally-open electric appliance load of 1 KW.
At 18 o' clock, at the peak of cooking, except that the normally open electric appliance and the electric heater are opened, the electric cooker, the electromagnetic oven and the electric kettle are opened together, the controller detects that the high-power equipment is opened, the electric heating heater is closed firstly, the electric load reaches 6KW, the maximum power number is exceeded, only the two-level load can be met, namely, the electric heater is kept in a closed state, and the electric cooker, the electromagnetic oven and the electric kettle are opened. The total electrical load becomes 4KW within the safe range. After the electric kettle is closed, the electric load is 5KW, and the electric heating heater can be turned on.
When 19 hours, the electric cooker and the induction cooker are closed, and the electric load is 3 KW. And 20 hours, the water heater is started, and the power consumption load is 4 KW.
And when the electric hair drier and the electric kettle are turned on, the water heater is turned off, the power consumption load is 6KW, the maximum power number is exceeded, only two-level load can be met, namely the electric heater is kept in a turned-off state, and the electric hair drier and the electric kettle are turned on. After the electric hair drier and the electric heating kettle are closed, the electric load is 3 KW.
The present invention is capable of other embodiments and its several details are capable of modifications in various obvious respects, all without departing from the spirit and scope of the present invention.
Claims (10)
1. The grading optimization capacity-increase-free control system for the electric load of the coal-to-electricity heating is characterized in that: the system comprises: the device comprises a temperature information real-time acquisition module, an electric power information real-time acquisition module, a temperature comparison module, an electric power judgment module and a command processing and sending module;
the temperature information real-time acquisition module is used for monitoring the real-time temperature in the room and transmitting the real-time temperature to the instruction processing and sending module and the temperature comparison module;
the electric power information real-time acquisition module is used for acquiring the current running power consumption, voltage and current information of a user and transmitting the information to the instruction processing and transmitting module and the power consumption power judgment module;
the temperature comparison module is used for acquiring a comparison result of the room temperature measured by the temperature information real-time acquisition module and the set temperature and transmitting the comparison result to the instruction processing and sending module;
the electric power judgment module is used for obtaining a comparison result of the total power consumption of the current operation of the user and the maximum household allowed power consumption and transmitting the comparison result to the instruction processing and sending module;
the instruction processing and sending module is used for receiving the room temperature monitored by the temperature information real-time acquisition module in real time, receiving the information acquired by the electric power information real-time acquisition module, receiving the information acquired by the temperature comparison module, receiving the information acquired by the electric power judgment module and controlling the opening of the electric appliances corresponding to the first-level load, the second-level load and the third-level load.
2. The coal-to-electricity heating electric load grading optimization capacity-increase-free control system according to claim 1, characterized in that: the temperature information real-time acquisition module is a temperature sensor.
3. The coal-to-electricity heating electric load grading optimization capacity-increase-free control system according to claim 2, characterized in that: the electric power information real-time acquisition module detects current by using a Hall element AH3503 and detects voltage by using a voltage instrument.
4. The coal-to-electricity heating electric load grading optimization capacity-increase-free control system according to claim 3, characterized in that: the electric power judgment module is an MSP430 single chip microcomputer;
the instruction processing and sending module is a communication line built by using an MAX485 chip.
5. The method for the graded optimization of the electrical load of the coal-to-electricity heating system without capacity increase based on the claim 1 is characterized in that: the method for controlling the grading optimization of the electrical load of the coal-to-electricity heating without capacity increase comprises the following specific processes:
step one, when the electric power information real-time acquisition module cannot monitor the existence of the secondary load, the temperature comparison module compares the room temperature measured by the temperature information real-time acquisition module with a set temperature:
if the temperature in the room measured by the temperature information real-time acquisition module is less than the set temperature, the electric heating heater is started to input heat to the room so as to increase the temperature of the room, and the electric heating heater is closed until the temperature in the room is equal to the set temperature;
if the temperature in the room monitored by the temperature information real-time acquisition module is greater than or equal to the set temperature, the electric heating heater is turned off;
step two, when the electric power information real-time acquisition module monitors that a secondary load exists, the electric heating heater is turned off, the temperature comparison module compares the temperature in the room measured by the temperature information real-time acquisition module with a set temperature, and if the temperature in the room is less than the set temperature, b is equal to 1; if the temperature in the room is greater than or equal to the set temperature, b is 0;
acquiring the current running power consumption of a user and the power consumption of an electric heating heater as the total power consumption to be run by the user;
the current running power of the user is as follows:
if the first-stage load exists, the current running power of the user is the sum of the first-stage load and the second-stage load;
if the first-level load does not exist, the current running power consumption of the user is the second-level load;
the electric power judgment module compares the total power consumption to be operated by the user with the maximum household allowed power consumption to obtain an electric power comparison result, and performs product operation on the electric power comparison result and a comparison result b of the temperature comparison module to determine whether to start a three-level load;
the primary load is a rigid load, and the rigid load is a type of load for maintaining the basic life needs of residents;
the class of loads for maintaining the basic life needs of residents is one or two of lighting lamps and the electricity loads of computers;
the secondary load is one, two, three, four, five, six or seven of the electric load of the electric water heater, the electric load of the electric hair drier, the electric load of the microwave oven, the electric load of the electric iron, the electric load of the electric kettle, the electric load of the electric rice cooker and the electric load of the electromagnetic oven;
the three-level load is the electric load for the electric heating heater.
6. The coal-to-electricity heating electric load grading optimization capacity-increase-free control method according to claim 5, characterized in that: the electric power judgment module compares the total power consumption of the current operation of the user with the maximum household allowed power consumption to obtain an electric power comparison result, and performs product operation on the electric power comparison result and a comparison result b of the temperature comparison module to determine whether to start a three-level load; the specific process is as follows:
when the total power consumption power of the current operation of a user is more than or equal to the maximum power consumption power allowed by a family, a is 0, and a multiplied by b is 0, namely, the three-level load is not satisfied, and the electric heating heater is not started;
when the total power consumption of the current operation of the user is less than the maximum power consumption allowed by the family, a is 1, and a x b is b, namely, whether the electric heater is started or not is judged only by the temperature, and three-level load is met.
7. The coal-to-electricity heating electric load grading optimization capacity-increase-free control method according to claim 6, characterized in that: whether the electric heater is started or not is judged only through the temperature, and the specific process is as follows:
if the temperature in the room measured by the temperature information real-time acquisition module is less than the set temperature, the electric heating heater is started to input heat to the room so as to increase the temperature of the room, and the electric heating heater is closed until the temperature in the room is equal to the set temperature;
and if the temperature in the room monitored by the temperature information real-time acquisition module is greater than or equal to the set temperature, the electric heating heater is turned off.
8. The coal-to-electricity heating electric load grading optimization capacity-increase-free control method according to claim 7, characterized in that: the temperature information real-time acquisition module is used for monitoring the real-time temperature in the room and transmitting the real-time temperature to the instruction processing and sending module and the temperature comparison module;
the electric power information real-time acquisition module is used for acquiring the current running power consumption, voltage and current information of a user and transmitting the information to the instruction processing and transmitting module and the power consumption power judgment module;
the temperature comparison module is used for acquiring a comparison result of the room temperature measured by the temperature information real-time acquisition module and the set temperature and transmitting the comparison result to the instruction processing and sending module;
the electric power judgment module is used for obtaining a comparison result of the total power consumption of the current operation of the user and the maximum household allowed power consumption and transmitting the comparison result to the instruction processing and sending module;
the instruction processing and sending module is used for receiving the room temperature monitored by the temperature information real-time acquisition module in real time, receiving the information acquired by the electric power information real-time acquisition module, receiving the information acquired by the temperature comparison module, receiving the information acquired by the electric power judgment module and controlling the opening of the electric appliances corresponding to the first-level load, the second-level load and the third-level load.
9. The coal-to-electricity heating electric load grading optimization capacity-increase-free control method according to claim 8, characterized in that: the secondary load is a delay operation load;
the secondary load cannot be suspended once it begins to run.
10. The coal-to-electricity heating electric load grading optimization capacity-increase-free control method according to claim 9, characterized in that: the electric appliance corresponding to the secondary load is linked with the electric heating heater switch, and the electric heating heater switch is firstly closed at the moment of opening the electric appliance corresponding to the secondary load;
the electric appliance corresponding to the secondary load is an electric water heater, an electric blower, a microwave oven, an electric iron, an electric kettle, an electric rice cooker or an electromagnetic oven;
the first, second and third levels of load rank ordering is as follows:
the first-level load is guaranteed firstly, the second-level load is guaranteed secondly, and the third-level load is guaranteed finally.
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