WO2021053871A1

WO2021053871A1 - Control system and control method

Info

Publication number: WO2021053871A1
Application number: PCT/JP2020/017766
Authority: WO
Inventors: 渡辺　健一; 篠崎　聡; 工藤　貴弘
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2019-09-20
Filing date: 2020-04-24
Publication date: 2021-03-25
Also published as: JPWO2021053871A1; JP7285468B2

Abstract

A first obtaining unit 110 obtains a predicted electric-power-purchase amount, which is a predicted value for the electric-power-purchase amount of a consumer in a prescribed period. A first determination unit 112, on the basis of the predicted electric-power-purchase amount that has been obtained, determines an electric-power-purchase bidding amount for purchasing electric power from another consumer. A second obtaining unit 114 obtains an electric-power-purchase condition for a consumer to purchase electric power. A second determination unit 116, on the basis of the obtained electric-power-purchase condition, determines an electric-power-purchase bidding price that is less than or equal to a price for purchasing electric power from a retail electric power supplier. An output unit 140 outputs bidding information including the determined electric-power-purchase bidding amount and the determined electric-power-purchase bidding price.

Description

Control system and control method

The present disclosure relates to a control system and a control method for controlling electric power.

Users who use energy such as electric power receive energy supply from the supplier. Generally, the user enters into an energy sales contract with a specific retail electric power company to receive energy supply from the supplier. However, if another retail electricity company other than the specific retail electricity company can supply energy at a lower price, or if another retail electricity company other than the specific retail electricity company can supply energy with better quality, etc. If energy is available, the user may want to choose another retail utility. In order to deal with this, the intermediary company matches the energy demand request and the energy supply request and determines the consumer and the supplier whose respective conditions match (see, for example, Patent Document 1).

JP-A-2002-133173

Under the feed-in tariff (FIT), the power generated by solar panels installed in facilities such as houses is generally sold to retail electric power companies or power transmission and distribution business operators. Since the purchase price of electricity will decrease due to the end of FIT, it is expected that the self-consumption of electricity will increase. In addition, as options for dealing with surplus electricity after the end of FIT, (1) selling electricity to retail electric power companies as surplus electricity out of FIT, (2) self-consuming daytime surplus electricity with electric vehicles, storage batteries, and heat pump water heaters, (3) ) It is considered to sell electricity in electricity transactions between consumers. In electricity transactions between consumers, smooth transactions are required because the facilities on the selling side and the facilities on the purchasing side are directly traded.

This disclosure was made in view of these circumstances, and the purpose is to provide a technology for smoothly executing electric power transactions between consumers.

In order to solve the above problems, the control system of a certain aspect of the present disclosure is acquired by the first acquisition unit and the first acquisition unit that acquire the predicted power purchase amount which is the predicted value of the power purchase amount in a predetermined period by the consumer. Based on the estimated power purchase amount, the first decision unit that determines the power purchase bid amount for purchasing power from other consumers, and the second acquisition unit that acquires the power purchase conditions for the consumer to purchase power. , Based on the power purchase conditions acquired by the 2nd acquisition department, the 2nd decision unit that determines the power purchase bid price below the price purchased from the retail electricity company and the power purchase bid determined by the 1st determination department It includes an output unit that outputs bid information including the amount and the power purchase bid price determined in the second determination unit.

Another aspect of the present disclosure is also a control system. This control system transfers to other consumers based on the first acquisition unit that acquires the predicted power sales amount, which is the predicted value of the power sales amount for a predetermined period, and the predicted power sales amount acquired by the first acquisition unit. The first decision unit that determines the bid amount for selling power, the second acquisition unit that acquires the power selling conditions for the consumer to sell power, and the power selling conditions acquired by the second acquisition unit are also included. In addition, the second decision section that determines the bid price for selling electricity that is equal to or higher than the price for selling electricity to the retail electric power company, the amount of the bid for selling electricity decided by the first decision section, and the bid for selling electricity decided by the second decision section. It is provided with an output unit that outputs bid information including the price.

Yet another aspect of the present disclosure is a control method. In this method, the step of acquiring the predicted power purchase amount, which is the predicted value of the power purchase amount in a predetermined period by the consumer, and the power purchase bid amount for purchasing power from another customer based on the acquired predicted power purchase amount. Based on the step of determining the power purchase condition, the step of acquiring the power purchase condition for the consumer to purchase power, and the acquired power purchase condition, the power purchase bid price equal to or less than the price to purchase power from the retail electric power company is determined. A step of outputting a bid information including a determined power purchase bid amount and a determined power purchase bid price is provided.

Yet another aspect of the present disclosure is also a control method. In this method, the step of acquiring the predicted power sales amount, which is the predicted value of the power sales amount in a predetermined period in the consumer, and the power sale bid amount for selling the power to other consumers based on the acquired predicted power sales amount. Based on the step of determining the power sale condition, the step of acquiring the power sale condition for the consumer to sell the power, and the acquired power sale condition, the power sale bid price equal to or higher than the price for selling the power to the retail electric power company is determined. A step of outputting a bid information including a determined power selling bid amount and a determined power selling bid price is provided.

It should be noted that any combination of the above components and the conversion of the expression of the present disclosure between a method, a device, a system, a computer program, a recording medium on which a computer program is recorded, or the like is also effective as an aspect of the present disclosure. is there.

According to this disclosure, electricity transactions between consumers can be executed smoothly.

It is a figure which shows the structure of the electric power trading system which concerns on Example. It is a figure which shows the structure of the control device of FIG. It is a figure which shows the data structure of the table held in the 1st acquisition part of FIG. 4 (a)-(c) are diagrams showing the format of bid information transmitted from the output unit of FIG. It is a figure which shows the structure of the server of FIG. It is a sequence diagram which shows the transaction procedure by the electric power trading system of FIG.

Before concretely explaining the embodiment of the present disclosure, the outline of the present embodiment will be described. An embodiment relates to an electric power trading system that executes an electric power inter-consumer transaction between consumers. A consumer is a facility that can purchase electric power by flowing electric power from the electric power system, including, for example, a house, an office, a store, a factory, and a park. At least some of the consumers can also be prosumers. A power generator is a facility where electricity can be sold by reverse power flow of electricity generated by using renewable energy or a fuel cell to an electric power system. In the following, a solar cell will be described as a representative of renewable energy or a fuel cell, but the present invention is not limited to the solar cell.

The electric power generated by the power generator fluctuates due to the influence of fluctuations in the power generation by the solar cells, and the electric power consumed by the consumer fluctuates due to the influence of the operating status of the load equipment in the consumer. When the fluctuation of these electric powers becomes large, the fluctuation in the electric power system also becomes large, and there is a possibility that the electric power system becomes unstable. Therefore, in order to conclude a transaction between consumers of electric power, the amount of electricity sold by the power generator and the amount of electricity purchased by the consumer are necessary parameters.

In addition, when concluding a transaction between consumers of electricity, the conditions for selling electricity by the power generator (hereinafter referred to as "electricity selling conditions") and the conditions for purchasing electricity by consumers (hereinafter referred to as "electricity purchasing conditions"). It is important that the conditions) are met. Such power selling conditions and power purchasing conditions are, for example, price, energy type, partner, and distance to the partner. The energy type is information for identifying how electric power is generated, for example, solar power and gas. The other party is information for identifying the other party of the electric power transaction. The distance to the other party is information indicating the distance to the other party of the electric power trading, and this is used, for example, when the usage amount of the electric power system is imposed according to the distance between the consumer and the power generator who trade the electric power. To. This information is also a necessary parameter for concluding a transaction between consumers of electric power.

The power generator in this embodiment generates bid information including a plurality of the above-mentioned parameters, and bids on the server of a business operator (hereinafter, referred to as “inter-consumer electric power trading business operator”) that executes an electric power inter-customer transaction. Send information. In addition, the consumer generates bid information including a plurality of the above-mentioned parameters, and transmits the bid information to the server of the inter-customer electric power trading company. The server executes matching based on a plurality of parameters included in the bid information from the power generator and a plurality of parameters included in the bid information from the consumer. The server sends the matching result as a successful bid result to the power generator and the consumer.

FIG. 1 shows the configuration of the electric power trading system 1000. The electric power trading system 1000 includes an electric power system 10, a first consumer 20a collectively referred to as a consumer 20, a second consumer 20b, a third consumer 20c, a fourth consumer 20d, and a server 30. The number of consumers 20 is not limited to "4". The first consumer 20a includes a control device 100, a power meter 200, a distribution board 300, a first load 400a and a second load 400b collectively referred to as a load 400, and the second consumer 20b is a first consumer 20a. In addition to the above-mentioned configuration, PV (Photovoltaics) 500 and SB (Storage Battery) 600 are included. The configuration of the third consumer 20c is the same as the configuration of the second consumer 20b, and the configuration of the fourth consumer 20d is the same as the configuration of the first consumer 20a. In these, the number of loads 400 is not limited to "2".

The first consumer 20a and the fourth consumer 20d are facilities capable of purchasing electric power in electric power transactions between consumers, and correspond to the above-mentioned consumers. On the other hand, the second consumer 20b and the third consumer 20c are facilities that can purchase electric power in the electric power transaction between consumers and also facilities that can purchase electric power in the electric power transaction between consumers. In the following, the above-mentioned consumer will be referred to as “power-buying side consumer 20”, and the above-mentioned power generator will be referred to as “power-selling side consumer 20”. Therefore, the second consumer 20b and the third consumer 20c become the power-buying side consumer 20 at a predetermined timing, and become the power-selling side consumer 20 at another timing. Here, for the sake of clarity, it is assumed that the second consumer 20b and the third consumer 20c are the consumers 20 on the power selling side.

The first customer 20a and the fourth customer 20d, which are the customers 20 on the power purchasing side, are, for example, in a single-family house, an apartment house such as an apartment, a store such as a convenience store or a supermarket, a commercial facility such as a building, or a factory. is there. The customer 20 on the power purchasing side is connected to the power system 10 and receives power supplied from a power company or the like. The second consumer 20b and the third consumer 20c, which are the consumers 20 on the power selling side, are also, for example, in single-family homes, apartments such as condominiums, stores such as convenience stores or supermarkets, commercial facilities such as buildings, and factories. is there. A renewable energy power generation device such as a solar cell system or a fuel cell system is installed in the consumer 20 on the power selling side, for example. Further, the consumer 20 on the power selling side is connected to the power system 10 and provides power to the power company or the like.

The power system 10 is provided by the power company. Electric power companies include transmission and distribution companies and retail electricity companies. The power transmission and distribution business operator maintains and operates transmission lines, substations, etc. in the supply area, and delivers the electricity received from others to others. For example, the power transmission and distribution business operator receives the power generated by the customer 20 on the power selling side. Retail utilities supply electricity in response to general demand. For example, a retail electric power company supplies electric power to a consumer 20 on the purchasing side. The retail electric power company may receive the electric power generated by the consumer 20 on the selling side. The power transmission and distribution business operator and the retail electric power business operator may be included in the same electric power company, but may be different business operators.

The server 30 is managed by an inter-customer electric power trading business operator, and mediates the buying and selling of electric power between the electric power selling side consumer 20 and the electric power buying side consumer 20 in the inter-customer electric power trading market. The server 30 is connected to the customer 20 on the power selling side and the customer 20 on the power buying side, and executes communication with them. The server 30 defines a predetermined interval, for example, 30 minutes as one slot, and receives bid information for each slot from the customer 20 on the power selling side and the customer 20 on the power buying side. The server 30 matches the bid information from the customer 20 on the power selling side and the customer 20 on the power buying side, so that the customer 20 on the power selling side and the customer 20 on the power buying side who sell the power in a predetermined slot are matched with each other. To determine the customer 20 and. The server 30 transmits the successful bid information including the determined information to the customer 20 on the power selling side and the customer 20 on the power purchasing side. According to the received successful bid information, the power-selling customer 20 provides power to the power-buying customer 20 in a predetermined slot, and the power-buying customer 20 supplies power to the power-selling customer 20 in the predetermined slot. Power is supplied from 20. If the customer 20 on the power purchasing side cannot make a successful bid for a part or all of the electricity, he / she purchases a part or all of the electricity that could not be made a successful bid from the retail electric power company. On the other hand, if the consumer 20 on the power selling side cannot make a successful bid for a part or all of the electricity, he / she also sells a part or all of the electricity that could not be made a successful bid to the retail electric power company.

In the following, such an electric power trading system 1000 will be used in (1) the configuration of the consumer 20 on the power purchase side, (2) the configuration of the consumer 20 on the power sale side, (3) bid processing, and (4) successful bid processing. (5) The power control process will be described in this order.
(1) Configuration of Consumer 20 on the Power Purchasing Side The watt-hour meter 200 is a digital watt-hour meter connected to the power system 10, and is, for example, a smart meter. The watt-hour meter 200 can measure the electric energy of the forward power flow entering from the power system 10 or the electric energy of the reverse power flow going out to the power system 10. The former corresponds to the amount of power purchased or the amount of forward power flow, and the latter corresponds to the amount of power sold or the amount of reverse power flow. Further, the watt-hour meter 200 can measure the power of the forward power flow or the power of the reverse power flow. The power meter 200 has a communication function, can communicate with the control device 100, and transmits the measurement result to the control device 100. The measurement result includes at least one of electric energy and electric power. The power meter 200 may be built in the distribution board 300.

The distribution board 300 is connected to the power meter 200 and is connected to the power system 10 via the power meter 200. Further, the distribution board 300 connects the load 400 and supplies electric power to the load 400. The load 400 is a device that consumes electric power supplied via the distribution board 300. The load 400 includes equipment such as an air conditioner (air conditioner), a television receiver (television), a lighting device, a refrigerator, and a heat pump water heater. The load 400 has a communication function and can communicate with the control device 100. Therefore, it can be said that the load 400 is a load that can be controlled by the control device 100.

The control device 100 can communicate with the server 30 and executes a bid process and a successful bid process with the server 30. The bidding process and the winning bid process in the control device 100 will be described later. Further, the control device 100 may be capable of executing the processing of the power management system, and has, for example, a function as a HEMS (Home Energy Management System) controller. The control device 100 can communicate with the electricity meter 200 and the load 400 in the consumer 20 on the power selling side. For example, the control device 100 communicates with the load 400 by HAN (Home Area Network) and also communicates with the power meter 200. The control device 100 may be able to communicate with the distribution board 300.

(2) Configuration of Consumer 20 on the Power Selling Side The control device 100, electricity meter 200, distribution board 300, and load 400 are the same as those described by the consumer 20 on the power purchasing side, so the description is omitted here. To do. The PV500 is a solar cell and is a renewable energy power generation device. The PV500 utilizes the photovoltaic effect to directly convert light energy into electric power. As the solar cell, a silicon solar cell, a solar cell made of a compound semiconductor or the like, a dye-sensitized type (organic solar cell), or the like is used. Since the intensity of sunlight, which is a renewable energy, fluctuates with the weather, altitude, etc., the electric power generated by the PV500 also fluctuates.

The PV500 has a DC (Direct Current) -DC converter, and converts the generated DC power into DC power having a desired voltage value. The DC-DC converter is composed of, for example, a step-up chopper, and is MPPT (Maximum Power Point Tracking) controlled so that the output power of the PV500 is maximized. Further, the PV500 has a DC-AC (Alternating Current) inverter, converts DC power into AC power, and outputs AC power to the distribution board 300. The DC-DC converter and the DC-AC inverter may be provided outside the PV500.

SB600 is a storage battery capable of charging and discharging electric power, and includes a lithium ion storage battery, a nickel hydrogen storage battery, a lead storage battery, an electric double layer capacitor, a lithium ion capacitor, and the like. The SB600 has a DC-DC converter and a bidirectional DC / AC inverter. The bidirectional DC / AC inverter converts AC power from the distribution board 300 into DC power and outputs it to the SB 600 via a DC-DC converter. Further, the bidirectional DC / AC inverter converts the DC power from the SB 600 into AC power via the DC-DC converter, and outputs the converted AC power to the distribution board 300. That is, the SB600 is charged and discharged by the bidirectional DC / AC inverter. Further, the SB 600 has a communication function and can communicate with the control device 100. The DC-DC converter and the bidirectional DC / AC inverter may be provided outside the SB600.

(3) Bidding process As described above, for example, slots are defined in units of 30 minutes, and electricity is bought and sold between the consumer 20 on the selling side and the consumer 20 on the purchasing side for each slot. Be done. The bidding process is a process performed by the consumer 20 on the selling side and the customer 20 on the buying side before buying and selling the electric power, and is a process for showing the intention to buy and sell the electric power in a predetermined slot. At that time, bid information indicating the conditions for selling power at the customer 20 on the power selling side is transmitted from the customer 20 on the power selling side to the server 30, and the conditions for purchasing power at the customer 20 on the power purchasing side. The bid information indicated by is transmitted from the customer 20 on the power purchasing side to the server 30.

FIG. 2 shows the configuration of the control device 100. The control device 100 includes a first acquisition unit 110, a first determination unit 112, a second acquisition unit 114, a second determination unit 116, a communication unit 118, and a control unit 120, and the communication unit 118 includes an output unit 140 and an input unit. Includes 142. The control device 100 has a common configuration between the power selling side consumer 20 and the power buying side consumer 20, but the operation of the control device 100 differs between the power selling side consumer 20 and the power buying side consumer 20. .. Here, the operation of the control device 100 on the power-buying side consumer 20 will be described, and then the operation of the control device 100 on the power-selling side consumer 20 will be described.

The first acquisition unit 110 of the control device 100 of the consumer 20 on the power purchase side acquires the predicted power purchase amount which is a predicted value of the power purchase amount of the consumer 20 in a predetermined period. In order to acquire the predicted power purchase amount, the first acquisition unit 110 receives the measurement result from the watt hour meter 200 of FIG. Further, the first acquisition unit 110 calculates the average value of the amount of power purchased at regular intervals based on the received measurement result. The first acquisition unit 110 stores the calculated average value of the purchased power amount in the table. FIG. 3 shows the data structure of the table held in the first acquisition unit 110. The horizontal axis shows the month from "1" month to "12" month, and the vertical axis shows a certain period such as "0:00 to 0:30" and "0:30 to 1:00". .. The fixed period is 30 minutes, which is the same as the period of one slot, but is not limited to this. The first acquisition unit 110 has a date and time measurement function, and when the average value of the amount of power purchased in the corresponding month and a certain period is calculated, the table is updated by the average value. Return to FIG. In addition, the first acquisition unit 110 extracts from the table the average value of the amount of power purchased in the corresponding month and a certain period as the predicted value of the amount of power purchased. The first acquisition unit 110 may derive a predicted value of the power purchase amount by extracting the average value of the power purchase amount in the corresponding month and a certain period and multiplying it by a predetermined constant. The method of acquiring the predicted power purchase amount is not limited to this, and time series prediction, machine learning, or the like may be used.

The first decision unit 112 determines the bid amount for power purchase for purchasing power from the customer 20 on the power selling side based on the predicted power purchase amount acquired by the first acquisition unit 110. The first determination unit 112 sets a threshold value for the predicted power purchase amount in advance, and if the predicted power purchase amount is equal to or less than the threshold value, the predicted power purchase amount is set as the power purchase bid amount. On the other hand, if the predicted power purchase amount is larger than the threshold value, the first determination unit 112 sets the threshold value as the power purchase bid amount. The first determination unit 112 may derive the power purchase bid amount by multiplying the predicted power purchase amount by a predetermined constant. The first determination unit 112 outputs the power purchase bid amount to the output unit 140.

The second acquisition unit 114 is connected to an operation device (not shown) provided outside the control device 100. The operation device is a device that can be operated by the user, and the second acquisition unit 114 acquires the power purchase condition for the consumer 20 on the power purchase side from the operation device by the operation of the user in the operation device. The power purchase condition includes, for example, the maximum price at which power can be purchased. This indicates that power can be purchased if the price is below the maximum price. The power purchase condition may include, for example, information that specifies the energy type of the power generation source. This indicates electric power generated by solar power, electric power generated by gas, and the like. The power purchase condition may include information that specifies the consumer 20 of the power purchase destination. This indicates identification information (hereinafter, referred to as “customer ID”) for identifying the consumer 20 of the power purchase destination. Multiple customer IDs may be shown. The power purchase condition may include information on the distance to the customer 20 of the power purchase destination. This shows a combination of the position information of the consumer 20 in which the control device 100 is installed and the distance.

The power purchase condition may be formed by combining a plurality of types of information as described above. At that time, a plurality of types of modes are defined, and information specifying any of the plurality of modes may be included in the power purchase condition. One of the plurality of modes is an economy-oriented mode. The economy-oriented mode is a mode in which the price is below the highest price and the lowest price is prioritized. Further, one of the plurality of modes is an environmentally friendly mode. The environmentally friendly mode is a mode in which priority is given to the electric power generated by solar power and the electric power generated by a pure hydrogen fuel cell. The mode is not limited to these.

The second decision unit 116 purchases electricity below the price purchased from the retail electric power company (hereinafter referred to as “retail electric power company power purchase price”) based on the power purchase conditions acquired by the second acquisition unit 114. Determine the bid price. For example, if the maximum price that can be purchased included in the power purchase condition is equal to or less than the retail electricity company's power purchase price, the second decision unit 116 sets the maximum price as the power purchase bid price and includes it in the power purchase condition. If the maximum price that can be purchased is higher than the electricity purchase price of the retail electricity company, the electricity purchase price of the retail electricity company is used as the electricity purchase bid price. The power purchase bid price may be adjusted based on the mode specified by the second acquisition unit 114. For example, the second determination unit 116 may set a price lower than the maximum price by a certain value as the power purchase bid price in the economic efficiency mode. The second determination unit 116 outputs the power purchase bid price and the power purchase condition to the output unit 140.

The output unit 140 receives the power purchase bid amount from the first decision unit 112 and the power purchase bid price from the second decision unit 116. Further, the output unit 140 receives the power purchase condition from the second determination unit 116. The output unit 140 generates bid information including the power purchase bid amount and the power purchase bid price. At that time, the output unit 140 includes the customer ID given to the customer 20 in which the control device 100 is installed in the bid information. Further, when the information for designating the energy type is included in the power purchase condition, the output unit 140 may include the information for designating the energy type in the bid information. When the information for designating the customer 20 of the power purchase destination is included in the power purchase condition, the output unit 140 may include the information for designating the customer 20 of the power purchase destination in the bid information. When the information regarding the distance to the customer 20 of the power purchase destination is included in the power purchase condition, the output unit 140 may include the information regarding the distance to the customer 20 of the power purchase destination in the bid information. The output unit 140 transmits the bid information to the server 30 of FIG.

FIGS. 4 (a)-(c) show the format of the bid information transmitted from the output unit 140. The bid information shown in FIG. 4A includes a customer ID, a power purchase bid amount, and a power purchase bid price. The bid information shown in FIG. 4B includes a customer ID, a power purchase bid amount, a power purchase bid price, an energy type, a power purchase destination, a distance, and a mode. FIG. 4 (c) will be described later, and the process returns to FIG. The server 30 in FIG. 1 receives bid information from the control device 100 installed in the consumer 20 on the power purchasing side.

The first acquisition unit 110 of the control device 100 in the consumer 20 on the power selling side acquires the predicted power sales amount which is a predicted value of the power sales amount in the predetermined period in the consumer 20. In order to acquire the predicted power sales amount, the first acquisition unit 110 receives the measurement result from the power meter 200 of FIG. Further, the first acquisition unit 110 calculates the average value of the amount of power sold at regular intervals based on the received measurement result. The first acquisition unit 110 stores the calculated average value of the amount of power sold in the table. The table is shown as shown in FIG. 3, and the table is updated as before, so the description thereof is omitted here. In addition, the first acquisition unit 110 extracts from the table the average value of the amount of electric power sold in the corresponding month and a certain period as the predicted value of the amount of electric charge sold. As in the past, the first acquisition unit 110 extracts the average value of the amount of power sold in the corresponding month and a certain period, and multiplies this by a predetermined constant to derive the predicted value of the amount of power sold. You may. The method of acquiring the predicted power sales amount is not limited to this, and time series prediction, machine learning, or the like may be used.

The first decision unit 112 determines the bid amount for selling electricity to sell the electric charge to the customer 20 on the power purchasing side based on the estimated amount of electric charge acquired by the first acquisition unit 110. The first determination unit 112 sets a threshold value for the predicted power sale amount in advance, and if the predicted power sale amount is equal to or less than the threshold value, the predicted power sale amount is set as the power sale bid amount. On the other hand, if the predicted power sale amount is larger than the threshold value, the first determination unit 112 sets the threshold value as the power sale bid amount. The first determination unit 112 may derive the power sale bid amount by multiplying the predicted power sale amount by a predetermined constant. The first determination unit 112 outputs the power sale bid amount to the output unit 140.

The second acquisition unit 114 is connected to an operation device (not shown) provided outside the control device 100. By the operation of the user in the operating device, the second acquisition unit 114 acquires the power selling condition for the consumer 20 on the power selling side to sell the power from the operating device. The power selling condition includes, for example, the lowest price at which power can be sold. This indicates that power can be sold if the price is equal to or higher than the minimum price. The power selling condition may include, for example, information that specifies the energy type for selling power. This indicates electric power generated by solar power, electric power generated by gas, and the like. The power selling condition may include information that specifies the consumer 20 to sell the power. This indicates identification information (hereinafter, also referred to as “customer ID”) for identifying the consumer 20 of the power sale destination. Multiple customer IDs may be shown. The power selling condition may include information regarding the distance to the customer 20 to which the power is sold. This shows a combination of the position information of the consumer 20 in which the control device 100 is installed and the distance.

Power selling conditions may be formed by combining a plurality of types of information as described above. At that time, a plurality of types of modes are defined, and information specifying any of the plurality of modes may be included in the power selling condition. One of the plurality of modes is an economy-oriented mode. The economic efficiency mode is a mode in which the price is higher than the lowest price and the highest price is prioritized. Further, one of the plurality of modes is an environmentally friendly mode. The environmentally friendly mode is a mode in which priority is given to the electric power generated by solar power and the electric power generated by the fuel cell. The mode is not limited to these.

The second decision unit 116 sells electricity at a price equal to or higher than the price for selling electricity to the retail electric power company (hereinafter referred to as “retail electric power company power selling price”) based on the power selling conditions acquired by the second acquisition unit 114. Determine the bid price. For example, if the minimum price that can be sold is equal to or higher than the electricity selling price of the retail electric power company, the second determination unit 116 sets the minimum price as the electricity selling bid price and includes it in the electricity selling condition. If the lowest price that can be sold is lower than the electricity selling price of the retail electricity company, the electricity selling price of the retail electricity company is used as the electricity selling bid price. The selling bid price may be adjusted based on the mode specified by the second acquisition unit 114. For example, the second determination unit 116 may set a price higher than the lowest price by a certain value as the power selling bid price in the economic efficiency mode. The second determination unit 116 outputs the power sale bid price and the power sale condition to the output unit 140.

The output unit 140 receives the power sale bid amount from the first decision unit 112 and the power sale bid price from the second decision unit 116. Further, the output unit 140 receives the power sale condition from the second determination unit 116. The output unit 140 generates bid information including the power sale bid amount and the power sale bid price. At that time, the output unit 140 includes the customer ID given to the customer 20 in which the control device 100 is installed in the bid information. Further, when the information for designating the energy type is included in the power sale condition, the output unit 140 may include the information for designating the energy type in the bid information. When the information for designating the customer 20 of the power sale destination is included in the power sale condition, the output unit 140 may include the information for designating the consumer 20 of the power sale destination in the bid information. When the information regarding the distance to the customer 20 of the power sale destination is included in the power sale condition, the output unit 140 may include the information regarding the distance to the customer 20 of the power sale destination in the bid information. The output unit 140 transmits the bid information to the server 30 of FIG. The bid information shown in FIG. 4C includes a customer ID, a power sale bid amount, and a power sale bid price. The bid information may be the same as in FIG. 4 (b). Return to FIG. The server 30 in FIG. 1 receives bid information from the control device 100 installed in the consumer 20 on the power selling side.

(4) Successful bid processing The successful bid processing is a process performed by the server 30 that has received bid information from the customer 20 on the power-buying side and the customer 20 on the power-selling side, and the power-buying side that should buy and sell the electric power. This is a process of matching the consumer 20 with the consumer 20 on the power selling side. The matching result is transmitted from the server 30 to the customer 20 on the power purchasing side and the customer 20 on the power selling side as a successful bid process.

FIG. 5 shows the configuration of the server 30. The server 30 includes a communication unit 310, a processing unit 312, and a storage unit 314. The communication unit 310 communicates with the control device 100 of the consumer 20 on the power selling side and the control device 100 of the customer 20 on the power purchasing side via the network. The communication unit 310 receives bid information from the control device 100 of the consumer 20 on the power selling side and the control device 100 of the customer 20 on the power purchasing side. The communication unit 310 outputs the bid information to the processing unit 312. The processing unit 312 stores the bid information for one slot collectively in the storage unit 314.

The storage unit 314 stores a database containing bid information for one slot under the control of the processing unit 312. For example, a combination of a consumer ID, a bid amount for power purchase, a bid price for power purchase, and the like is stored for each customer 20 on the power purchase side, and a customer ID and power sale for each customer 20 on the power sale side. The combination of bid amount, power sale bid price, etc. is stored.

The processing unit 312 executes matching processing between the customer 20 on the power purchasing side and the customer 20 on the power selling side for one slot based on the database stored in the storage unit 314. The processing unit 312, for example, when the bid information from the customer 20 on the power purchase side and the bid information from the customer 20 on the power sale side match, the customer 20 on the power purchase side and the power sale side It is determined that the matching with the customer 20 of the above is completed. When the power purchase bid price and the power sale bid price match, the processing unit 312 determines the power purchase bid price or the power sale bid price as the bid price. On the other hand, even if the power purchase bid price and the power sale bid price do not match, if the power purchase bid price is higher than the power sale bid price, the processing unit 312 determines that the matching is completed. At that time, the processing unit 312 determines a price between the power purchase bid price and the power sale bid price, for example, an intermediate price as the bid price.

Further, when the power purchase bid amount and the power sale bid amount do not match and the power purchase bid amount is larger than the power sale bid amount, the processing unit 312 requests the customer 20 on the power purchase side. A plurality of consumers 20 on the power selling side may be matched. On the other hand, when the power selling bid amount is larger than the power buying bid amount, the processing unit 312 may match a plurality of power buying side customers 20 with one power selling side customer 20. Further, when it is possible to match a plurality of customers 20 on the power selling side with one customer 20 on the power buying side, the processing unit 312 is shown in the bid information from the customer 20 on the power buying side. Depending on the mode, the customer 20 on the power selling side may be selected. For example, when the economy-oriented mode is set, the processing unit 312 selects the consumer 20 on the power selling side having the lowest power selling bid price. The same applies when it is possible to match a plurality of consumers 20 on the power purchasing side with one consumer 20 on the power selling side. The matching method is not limited to the above.

The processing unit 312 generates successful bid information showing the matching result. The successful bid information includes information on whether or not the sale has been completed, and also includes information on the bid price and the bid amount when the sale has been completed. In addition, the customer ID of the other party of the sale may be included. The communication unit 310 transmits the successful bid information generated by the processing unit 312 to the control device 100 of the customer 20 on the power purchasing side and the control device 100 of the customer 20 on the power selling side via the network.

(5) Electric power control processing In the electric power control processing, when a sale is completed between the customer 20 on the power purchase side and the customer 20 on the power sale side, the customer 20 on the power purchase side who has made a successful bid causes the electric power to flow forward. This includes control and control in which the customer 20 on the selling side who has made a successful bid makes the electric power stably reverse power flow.

The input unit 142 in the control device 100 (customer 20 on the power purchase side) in FIG. 2 receives the successful bid information from the server 30. The input unit 142 outputs the successful bid information to the control unit 120. The control unit 120 executes power purchase from the customer 20 of the power purchase destination in the target slot when the successful bid information indicates that the sale has been completed. Executing the purchase of power from the customer 20 of the power purchase destination means paying the amount of power used to the customer 20 of the power purchase destination while the power is flowing forward from the power system 10. Since a known technique may be used for the configuration for paying the amount of electric power used to the consumer 20 of the power purchase destination, the description thereof will be omitted here.

At that time, the control unit 120 receives the measurement result from the power meter 200 of FIG. 1, and operates the load 400 of FIG. 1 so that the power purchase power amount of the measurement result is close to the bid amount included in the successful bid information. To control. When the load 400 is an air conditioner, the control unit 120 reduces the air volume in order to reduce the power purchase power amount, or increases the air volume in order to increase the power purchase power amount. On the other hand, the control unit 120 executes the purchase of electricity from the retail electric power company when the successful bid information does not indicate that the sale has been completed.

The input unit 142 in the control device 100 (customer 20 on the power selling side) receives the successful bid information from the server 30. The input unit 142 outputs the successful bid information to the control unit 120. When the successful bid information indicates that the sale has been completed, the control unit 120 executes the sale of power to the consumer 20 of the power sale destination in the target slot. Executing the sale of power to the customer 20 of the power sale destination means receiving the amount of power used from the customer 20 of the power sale destination while reverse-feeding the power to the power system 10. Since a known technique may be used for the configuration for receiving the amount of electric power used from the customer 20 to whom the electric power is sold, the description thereof will be omitted here.

At that time, the control unit 120 receives the measurement result from the power meter 200 of FIG. 1, and operates the SB 600 of FIG. 1 so that the amount of power sold, which is the measurement result, is close to the bid amount included in the successful bid information. Control. The control unit 120 reduces the amount of discharge from the SB 600 in order to reduce the amount of power sold, or increases the amount of discharge from the SB 600 in order to increase the amount of power sold. On the other hand, the control unit 120 executes the sale of electricity to the retail electric power company when the successful bid information does not indicate the success of the sale.

The subject of the device, system, or method in the present disclosure comprises a computer. By executing the program by this computer, the function of the subject of the device, system, or method in the present disclosure is realized. A computer has a processor that operates according to a program as a main hardware configuration. The type of processor does not matter as long as the function can be realized by executing the program. The processor is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or an LSI (Large Scale Integration). The plurality of electronic circuits may be integrated on one chip or may be provided on a plurality of chips. The plurality of chips may be integrated in one device, or may be provided in a plurality of devices. The program is recorded on a non-temporary recording medium such as a computer-readable ROM, optical disc, or hard disk drive. The program may be stored in the recording medium in advance, or may be supplied to the recording medium via a wide area communication network including the Internet or the like.

The operation of the electric power trading system 1000 with the above configuration will be described. FIG. 6 is a sequence diagram showing a transaction procedure by the electric power trading system 1000. The first customer 20a generates bid information (S10) and transmits the bid information to the server 30 (S12). The server 30 receives the bid information (S14). The second customer 20b generates bid information (S16) and transmits the bid information to the server 30 (S18). The server 30 receives the bid information (S20). The server 30 executes a matching process (S22) and generates successful bid information (S24). The server 30 transmits the successful bid information to the first customer 20a (S26), and transmits the successful bid information to the second customer 20b (S28). The first customer 20a receives the successful bid information (S30), and the second customer 20b receives the successful bid information (S32).

According to this embodiment, since the bid information including the power purchase bid amount determined based on the predicted power purchase amount and the power purchase bid price determined based on the power purchase conditions is output, the power consumers Transactions can be executed smoothly. Moreover, since the power purchase condition includes the maximum price that can be purchased, the condition for the price can be specified. Further, since the power purchase condition includes information for designating the energy type of the power generation source, the condition for the energy type can be specified. Further, since the power purchase condition includes information for designating the power purchase destination, the condition for the power purchase destination can be specified. Further, since the power purchase condition includes information on the distance to the power purchase destination, the condition for the distance can be specified. Further, since the power purchase condition includes information for designating one of the plurality of modes, the mode to be prioritized can be specified. In addition, when the sale is successful, the electricity is purchased from the electricity purchase destination, so that the electricity consumer-to-consumer transaction can be executed. In addition, when the sale is not completed, the electricity is purchased from the retail electric power company, so that the electric power can be supplied.

In addition, since the bid information including the power sale bid amount determined based on the predicted power sale amount and the power sale bid price determined based on the power sale condition is output, the electric charge consumer-to-consumer transaction can be smoothly executed. .. Moreover, since the power selling condition includes the minimum price at which power can be sold, the condition for the price can be specified. Further, since the power selling condition includes information for designating the energy type for selling power, the condition for the energy type can be specified. Further, since the power selling condition includes information for designating the power selling destination, the condition for the power selling destination can be specified. Further, since the power selling condition includes information on the distance to the power selling destination, the condition for the distance can be specified. Further, since the power selling condition includes information for designating one of the plurality of modes, the mode to be prioritized can be specified. In addition, when the sale is successful, the electricity is sold to the electricity sales destination, so that the electricity consumer-to-consumer transaction can be executed. Further, when the sale is not completed, the electric power is sold to the retail electric power company, so that the electric power can be supplied.

The outline of one aspect of the present disclosure is as follows. The control system of a certain aspect of the present disclosure is acquired by the first acquisition unit (110) and the first acquisition unit (110) that acquire the predicted power purchase amount, which is the predicted value of the power purchase amount in a predetermined period by the consumer (20). Based on the estimated power purchase amount, the first decision unit (112) that determines the power purchase bid amount for purchasing power from another consumer (20) and the purchase for the consumer (20) to purchase power. Based on the second acquisition unit (114) that acquires the electric charge conditions and the electric charge purchase conditions acquired by the second acquisition unit (114), the power purchase bid price that is equal to or less than the price for purchasing electric charge from the retail electric power company is determined. Output that outputs bid information including the power purchase bid amount determined by the second determination unit (116) and the first determination unit (112) and the power purchase bid price determined by the second determination unit (116). A unit (140) is provided.

The power purchase conditions acquired by the second acquisition unit (114) include the maximum price that can be purchased.

The power purchase condition acquired by the second acquisition unit (114) may include information that specifies the energy type of the power generation source. The bid information output from the output unit (140) also includes information for designating the energy type.

The power purchase condition acquired by the second acquisition unit (114) may include information for designating the power purchase destination. The bid information output from the output unit (140) also includes information for designating the power purchase destination.

The power purchase condition acquired by the second acquisition unit (114) may include information on the distance to the power purchase destination. The bid information output from the output unit (140) also includes information on the distance to the power purchase destination.

The power purchase condition acquired by the second acquisition unit (114) may include information that specifies one of a plurality of modes. The second determination unit (116) determines the power purchase bid price based on the mode specified by the second acquisition unit (114).

The output unit (140) shifts the output of bid information during the time period when the power demand is relatively low in the day.

Further provided is a control unit (120) that executes power purchase from the power purchase destination when a sale is completed as a result of output of bid information from the output unit (140).

Further provided is a control unit (120) that executes power purchase from a retail electric power company when a sale is not completed as a result of output of bid information from the output unit (140).

Another aspect of the present disclosure is also a control system. This control system obtains the first acquisition unit (110) for acquiring the predicted power sales amount, which is the predicted value of the power sales amount for a predetermined period by the consumer (20), and the predicted power sales amount acquired by the first acquisition unit (110). Based on this, the first decision unit (112) that determines the bid amount for selling power to sell power to another consumer (20) and the power selling condition for selling power to the consumer (20) are acquired. Based on the power selling conditions acquired by the second acquisition unit (114) and the second acquisition unit (114), the second determination unit (which determines the bid price for selling electricity that is equal to or higher than the price for selling electricity to the retail electric power company). 116), and an output unit (140) that outputs bid information including the power sale bid amount determined by the first determination unit (112) and the power sale bid price determined by the second determination unit (116). , Equipped with.

The power selling conditions acquired by the second acquisition unit (114) include the lowest price that can be sold.

The power selling condition acquired by the second acquisition unit (114) may include information for designating the energy type to be sold. The bid information output from the output unit (140) also includes information for designating the energy type.

The power selling condition acquired by the second acquisition unit (114) may include information for designating the power selling destination. The bid information output from the output unit (140) also includes information for designating the power sale destination.

The power selling condition acquired by the second acquisition unit (114) may include information on the distance to the power selling destination. The bid information output from the output unit (140) also includes information on the distance to the power sale destination.

The power selling condition acquired by the second acquisition unit (114) may include information specifying any one of a plurality of modes. The second determination unit (116) determines the power selling bid price based on the mode specified by the second acquisition unit (114).

The output unit (140) shifts the output of bid information during the time of day when the power demand is relatively high.

Further provided is a control unit (120) that executes power sale to the power sale destination when a sale is completed as a result of output of bid information from the output unit (140).

Further provided is a control unit (120) that sells power to a retail electric power company when the sale is not completed as a result of the output of bid information from the output unit (140).

Yet another aspect of the present disclosure is a control method. In this method, the step of acquiring the predicted power purchase amount, which is the predicted value of the power purchase amount in a predetermined period by the customer (20), and the power purchase from another customer (20) based on the acquired predicted power purchase amount. The step of determining the bid amount for the electric charge to be purchased, the step of acquiring the electric charge purchase condition for the consumer (20) to purchase the electric power, and the electric charge purchase condition from the retail electric power company based on the acquired electric charge purchase condition. It includes a step of determining a power purchase bid price below the price, and a step of outputting bid information including the determined power purchase bid amount and the determined power purchase bid price.

Yet another aspect of the present disclosure is also a control method. In this method, the step of acquiring the predicted power sales amount, which is the predicted value of the power sales amount in a predetermined period by the customer (20), and the power sale to another customer (20) based on the acquired predicted power sales amount. The step of determining the bid amount of electric charge for selling electricity, the step of acquiring the electric charge selling condition for the consumer (20) to sell the electric charge, and the step of acquiring the electric charge selling condition, and selling the electric charge to the retail electric power company based on the acquired electric charge selling condition. It includes a step of determining a power selling bid price equal to or higher than the price, and a step of outputting bid information including the determined power selling bid amount and the determined power selling bid price.

The present disclosure has been described above based on the examples. This embodiment is an example, and it will be understood by those skilled in the art that various modifications are possible for each of these components or combinations of each processing process, and that such modifications are also within the scope of the present disclosure. ..

In this embodiment, the control device 100 generates bid information. However, the present invention is not limited to this, and for example, the server 30 may generate bid information, and the combination of the control device 100 and the server 30 may generate bid information. Therefore, the configuration for generating bid information may be a control system. According to this modification, the degree of freedom of configuration can be improved.

In this embodiment, the first acquisition unit 110 derives a predicted value of the amount of power purchased or a predicted value of the amount of power sold. However, the present invention is not limited to this, and for example, the predicted value of the amount of power purchased or the predicted value of the amount of power sold may be derived by an external device of the control device 100, and the first acquisition unit 110 may refer to the predicted value of the amount of power purchased or the predicted value of the amount of power sold. Predicted values may be obtained from an external device. According to this modification, the degree of freedom of configuration can be improved.

In this embodiment, the first acquisition unit 110 acquires the predicted value of the amount of power purchased based on the past amount of power purchased, and acquires the predicted value of the amount of power sold based on the past amount of power sold. However, the present invention is not limited to this, and for example, the first acquisition unit 110 may adjust the predicted value of the power purchase amount or the predicted value of the power sale amount by reflecting information other than the electric energy amount such as the weather forecast. For example, when the weather forecast is sunny, the first acquisition unit 110 increases the predicted value of the power purchase amount derived based on the past power purchase amount. The same applies to the predicted value of the amount of electricity sold. According to this modification, the degree of freedom of configuration can be improved.

In this modification, the output unit 140 in the control device 100 of the consumer 20 on the power purchase side may shift the output of the bid information to a time zone in which the power demand in the day is relatively low. At that time, the customer 20 on the power purchasing side shifts the time zone of power consumption by SB (not shown) or a natural refrigerant heat pump water heater (not shown). According to this modification, the bid information is output at a time when the power demand is relatively low, so that the bid price can be lowered.

In this modification, the output unit 140 in the control device 100 of the consumer 20 on the power selling side may shift the output of the bid information to a time zone in which the power demand in the day is relatively high. At that time, the customer 20 on the power selling side shifts the time zone of surplus power selling by the SB600. According to this modification, the output of the bid information is shifted to the time zone when the power demand is relatively high, so that the bid price can be increased.

10 power system, 20 consumers, 30 servers, 100 control devices (control system), 110 1st acquisition unit, 112 1st decision unit, 114 2nd acquisition unit, 116 2nd determination unit, 118 communication unit, 120 control unit , 140 output unit, 142 input unit, 200 electricity meter, 300 distribution board, 310 communication unit, 312 processing unit, 314 storage unit, 400 load, 500 PV, 600 SB, 1000 power trading system.

Claims

The first acquisition unit that acquires the predicted power purchase amount, which is the predicted value of the power purchase amount for a predetermined period by the consumer,
Based on the predicted power purchase amount acquired by the first acquisition unit, the first determination unit that determines the power purchase bid amount for purchasing power from other consumers, and
The second acquisition unit that acquires the power purchase conditions for the consumer to purchase power,
Based on the power purchase conditions acquired by the second acquisition unit, the second determination unit determines the bid price for power purchase below the price purchased from the retail electric power company.
An output unit that outputs bid information including the power purchase bid amount determined by the first determination unit and the power purchase bid price determined by the second determination unit.
Control system with.
The control system according to claim 1, wherein the power purchase condition acquired by the second acquisition unit includes the maximum price at which power can be purchased.
The power purchase condition acquired by the second acquisition unit includes information for designating the energy type of the power generation source.
The control system according to claim 1 or 2, wherein the bid information output from the output unit includes information for designating the energy type.
The power purchase condition acquired by the second acquisition unit includes information for designating the power purchase destination.
The control system according to any one of claims 1 to 3, wherein the bid information output from the output unit includes information for designating the power purchase destination.
The power purchase condition acquired by the second acquisition unit includes information regarding the distance to the power purchase destination.
The control system according to any one of claims 1 to 4, wherein the bid information output from the output unit includes information regarding a distance to the power purchase destination.
The power purchase condition acquired by the second acquisition unit includes information that specifies one of a plurality of modes.
The control system according to any one of claims 2 to 5, wherein the second determination unit determines the power purchase bid price based on the mode specified in the second acquisition unit.
The control system according to any one of claims 1 to 6, wherein the output unit shifts the output of the bid information during a time period in which the power demand is relatively low in a day.
The control according to any one of claims 1 to 7, further comprising a control unit that executes a power purchase from the power purchase destination when a sale is completed as a result of the output of the bid information from the output unit. system.
Any one of claims 1 to 7, further comprising a control unit that executes a power purchase from the retail electric power company when a sale is not completed as a result of the output of the bid information from the output unit. The control system described in.
The first acquisition unit that acquires the predicted power sales amount, which is the predicted value of the power sales amount for a predetermined period in the consumer,
Based on the predicted power sales amount acquired by the first acquisition unit, the first determination unit that determines the power sale bid amount for selling power to other consumers, and
The second acquisition unit that acquires the power sale conditions for the consumer to sell power,
Based on the power selling conditions acquired by the second acquisition unit, the second determination unit determines the bid price for selling electricity that is equal to or higher than the price for selling electricity to the retail electric power company.
An output unit that outputs bid information including the power sale bid amount determined by the first determination unit and the power sale bid price determined by the second determination unit.
Control system with.
The control system according to claim 10, wherein the power selling condition acquired by the second acquisition unit includes the lowest price at which power can be sold.
The power selling condition acquired by the second acquisition unit includes information for designating the energy type to be sold.
The control system according to claim 10 or 11, wherein the bid information output from the output unit includes information for designating the energy type.
The power selling condition acquired by the second acquisition unit includes information for designating a power selling destination.
The control system according to any one of claims 10 to 12, wherein the bid information output from the output unit includes information for designating the power selling destination.
The power selling condition acquired by the second acquisition unit includes information regarding the distance to the power selling destination.
The control system according to any one of claims 10 to 13, wherein the bid information output from the output unit includes information regarding a distance to the power sale destination.
The power selling condition acquired by the second acquisition unit includes information that specifies one of a plurality of modes.
The control system according to any one of claims 11 to 14, wherein the second determination unit determines the power sale bid price based on the mode specified in the second acquisition unit.
The control system according to any one of claims 10 to 15, wherein the output unit shifts the output of the bid information during a time period in which the power demand is relatively high in a day.
The control according to any one of claims 10 to 16, further comprising a control unit that executes power sale to the power sale destination when a sale is completed as a result of the output of the bid information from the output unit. system.
Any one of claims 10 to 16, further comprising a control unit that executes power sale to the retail electric power company when the sale is not completed as a result of the output of the bid information from the output unit. The control system described in.
The step of acquiring the predicted power purchase amount, which is the predicted value of the power purchase amount in a predetermined period by the consumer,
Based on the acquired estimated power purchase amount, the step of determining the power purchase bid amount for purchasing power from other consumers, and
The step of acquiring the power purchase conditions for the consumer to purchase power, and
Based on the acquired power purchase conditions, the step of determining the power purchase bid price below the price purchased from the retail electric power company, and
A step of outputting bid information including the determined power purchase bid amount and the determined power purchase bid price, and
Control method including.
The step of acquiring the predicted power sales amount, which is the predicted value of the power sales amount for a predetermined period in the consumer,
Based on the acquired estimated power sales amount, the step of determining the power sales bid amount for selling power to other consumers, and
The step of acquiring the power selling conditions for the consumer to sell power, and
Based on the acquired power selling conditions, the step of determining the power selling bid price above the price to sell power to the retail electric power company, and
A step of outputting bid information including the determined power sale bid amount and the determined power sale bid price, and
Control method including.