JP5502213B1 - Electric power supply and demand adjustment device, electric power supply and demand adjustment system, electric power supply and demand adjustment method and program - Google Patents

Abstract

An object of the present invention is to provide a balance between supply and demand while performing autonomous distributed control by distributed power generation devices and power storage devices.
A demand amount acquisition unit 311 of a server 30 acquires a total demand amount of a load 1, and a power generation function acquisition unit 312 acquires a power generation function indicating a relationship between a power price and a power generation amount from the power generation device 10. The storage function acquisition unit 313 acquires a storage function indicating the relationship between the power price, the charge amount, and the discharge amount from the storage device 20, and the appropriate price determination unit 315 is based on the power generation function, the storage function, and the total demand amount. An appropriate price that balances the power generation amount, the discharge amount, the charge amount, and the total demand amount of the load 1 is determined, and the price signal transmission unit 316 transmits a price signal indicating the appropriate price to the power generation device 10 and the power storage device 20. The power generation device 10 and the power storage device 20 perform power generation and charge / discharge control according to the price signal.
[Selection] Figure 13

Description

  The present invention relates to a power supply and demand adjustment device, a power supply and demand adjustment system, a power supply and demand adjustment method, and a program.

  When the power generation device and the power storage device are installed in a distributed manner, autonomous distributed control is performed by agents provided on these in order to balance the supply and demand. However, in order to perform cooperative control between such multi-agents, complicated control is required.

  On the other hand, in Patent Document 1, the price that is the intersection of the demand curve and the supply curve in power trading and the transaction volume of each agent are determined to settle the power trading, and the settlement price from the power trading market computer to each agent. And a settlement amount are notified, and it is conceivable that multi-agent cooperative control is realized by the central power trading market computer controlling each agent in this way.

JP 2011-22902 A

  However, in the invention described in Patent Document 1, the power trading market computer controls each agent, the processing load of the power trading market computer is large, and the processing load is distributed by autonomous distributed control by each agent. I can't.

  The present invention has been made in view of such a background, an electric power supply and demand adjustment device, an electric power supply and demand adjustment system, which can balance supply and demand while performing autonomous distributed control with distributed power generation devices and power storage devices, An object of the present invention is to provide a power supply and demand adjustment method and program.

A main invention of the present invention for solving the above-mentioned problems is an electric power supply and demand adjustment device, which is a power generation device that generates power with a power generation amount according to a power price, and a power storage device that charges or discharges according to the power price. A demand amount acquisition unit that is communicably connected to each other and acquires a total demand amount by a power device other than the power storage device, and storage price relationship information indicating a relationship between the power price, a charge amount, and a discharge amount. A power storage price relationship information acquisition unit acquired from the power generation device; a power generation price relationship information acquisition unit that acquires power generation price relationship information indicating a relationship between the power price and the power generation amount from the power generation device; based on the price relationship information and the total demand, the supply curve representing the change in power generation and supply said amount is the total value of the discharge amount corresponding to the power price, corresponding to the power price the Wherein a reasonable price determining unit, a price signal indicative of the proper price to determine the proper price the a power price corresponding to the intersection between demand curve representing the change of a value obtained by adding the total demand amount to the total value of the coulometric A power storage device and a price signal transmission unit for transmitting to the power generation device.

  In the power supply and demand adjustment apparatus according to the present invention, the storage price relationship information includes discharge price relationship information indicating a relationship between the power price and the discharge amount, and charging indicating a relationship between the power price and the charge amount. Price related information may be included.

Another aspect of the present invention is a power supply and demand adjustment system, which is a power generation device that generates a power generation amount according to a power price, a power storage device that charges or discharges according to the power price, and the power generation A power generation price relation information for generating power generation price relation information indicating a relation between the power price and the power generation amount. A power generation price relationship information transmitting unit that transmits the power generation price relationship information to the server device, wherein the power storage device indicates a relationship between the power price and a charge amount and a discharge amount. A storage price relation information creating unit that creates the storage price relation information transmission unit that transmits the storage price price relation information to the server device, and the server device is a power device other than the power storage device A demand amount acquisition unit for acquiring a total demand amount, a power generation price relationship information acquisition unit for acquiring the power generation price relationship information from the power generation device, and a power storage price relationship information acquisition for acquiring the power storage price relationship information from the power storage device A supply curve representing a change in supply amount that is a total value of the power generation amount and the discharge amount according to the power price, based on the power generation price relationship information, the electricity storage price relationship information, and the total demand amount An appropriate price determining unit that determines an appropriate price that is the power price corresponding to an intersection with a demand curve that represents a change in a value obtained by adding the total demand to the total value of the charge according to the power price ; A price signal transmission unit that transmits a price signal indicating the appropriate price to the power generation device and the power storage device, and the power generation device receives the price signal from the server device. A signal reception unit, a power generation amount determination unit that determines the power generation amount according to the price signal based on the power generation price relation information, and a power generation control unit that performs control for power generation of the power generation amount, The power storage device includes a price signal receiving unit that receives the price signal from the server device, and a charge / discharge amount determining unit that determines the charge amount and the discharge amount according to the price signal based on the power storage price relation information. And a charge / discharge control unit that performs control for charging the charge amount and discharging the discharge amount.

Another aspect of the present invention is a power supply and demand adjustment method, each of a power storage device that performs charging or discharging according to a power price, and a power generation device that generates a power generation amount according to the power price. A computer communicably connected to obtain a total demand amount by a power device other than the power storage device, and obtain power generation price relationship information indicating a relationship between the power price and the power generation amount from the power generation device; , obtaining a power storage price relation information showing the relation between the electricity price and charge amount and discharge amount from said power storage device, the power generation price relationship information, based on said power storage price relationship information and the total demand, the Add the total demand to the supply curve representing the change in the supply amount that is the total value of the power generation amount and the discharge amount according to the power price, and the total value of the charge amount according to the power price Run determining the proper price is the electricity price corresponding to the intersection between demand curve representing a change in value, and transmitting the price signals indicative of the proper price to the power storage device and said power generating device, was I decided to.

Another aspect of the present invention is a program that is communicably connected to a power storage device that performs charging or discharging according to a power price and a power generation device that generates a power generation amount according to the power price. Acquiring a total demand amount by a power device other than the power storage device, acquiring power generation price relationship information indicating a relationship between the power price and the power generation amount from the power generation device, and the power price. Acquiring power storage price relationship information indicating a relationship between a charge amount and a discharge amount; and, based on the power generation price relationship information, the power storage price relationship information, and the total demand amount, the power generation amount according to the power price and A supply curve representing a change in supply amount that is a total value of the discharge amount, and a demand curve representing a change in value obtained by adding the total demand amount to the total value of the charge amount according to the power price; To determining a reasonable price is the electricity price corresponding to the intersection, and transmitting the price signals indicating the proper price to said power storage device and said power generating device, and thereby the execution.

  Other problems and solutions to be disclosed by the present application will be made clear by the embodiments of the invention and the drawings.

  ADVANTAGE OF THE INVENTION According to this invention, supply-and-demand balance can be taken, performing autonomous distributed control with the distributed electric power generating apparatus and electrical storage apparatus.

It is a figure which shows an example of the whole structure of the electric power system of this embodiment. 2 is a diagram illustrating a hardware configuration example of a power generation device 10. FIG. 3 is a diagram illustrating a software configuration example of a power generation agent 11. FIG. 4 is a diagram illustrating a flow of processing for transmitting a power generation function from the power generation apparatus 10 to the server 30. FIG. It is a figure which shows the flow of the control processing of the generator 12 according to a price signal. 2 is a diagram illustrating a hardware configuration example of a power storage device 20. FIG. 3 is a diagram illustrating a software configuration example of a power storage agent 21. FIG. 4 is a diagram showing a flow of processing for transmitting a discharge function from the power storage device 20 to the server 30. FIG. 4 is a diagram showing a flow of processing for transmitting a charging function from the power storage device 20 to the server 30. FIG. It is a figure which shows the flow of the control processing of the storage battery 22 according to a price signal. 3 is a diagram illustrating an example of a heartware configuration of a server 30. FIG. 3 is a diagram illustrating an example of a software configuration of a server 30. FIG. It is a figure explaining the determination method of a reasonable price. It is a figure which shows the flow of the process which determines the total supply amount for every electric power price. It is a figure which shows the flow of the process which determines the total charge amount for every electric power price. It is a figure which shows the flow of the process which transmits the price signal which shows a reasonable price.

== Overall system configuration ==
Hereinafter, a power system according to an embodiment of the present invention will be described. FIG. 1 is a diagram illustrating an example of the overall configuration of the power system according to the present embodiment. The power system of this embodiment includes a load 1, a power generation device 10, a power storage device 20, and a server 30. The load 1, the power generation device 10, the power storage device 20, and the server 30 each have a communication function, and are connected to each other via the communication network 2 so that they can communicate with each other. The communication network 2 is, for example, the Internet, and is constructed by a public telephone line, a mobile phone line, a wireless communication path, a dedicated telephone line, a power line, a serial cable, Ethernet (registered trademark), or the like.

  The power generation device 10 generates power in an amount corresponding to the power price, and the power storage device 20 charges or discharges in an amount corresponding to the power price. The load 1 is a power device that consumes power. The load 1 may be of any type as long as it consumes power. It is assumed that the load 1 has a function of notifying the server 30 of the demand amount via the communication network 2.

  In the present embodiment, it is assumed that the power generated by the power generation apparatus 10 is consumed by either the load 1 or being charged by the power storage apparatus 20.

  The server 30 is a computer such as a personal computer and a workstation that determines an appropriate power price (hereinafter referred to as an appropriate price) that balances supply and demand. The server 30 transmits information indicating the determined appropriate price (hereinafter referred to as a price signal) to the power generation device 10 and the power storage device 20. Thereby, in the electric power system of this embodiment, it is appropriate so that the power supply by the power generation device 10 and the power storage device 20 and the supply and demand balance by the load 1, the power generation device 10 and the power storage device 20 can be achieved while performing autonomous control of charging and discharging. To set a reasonable price.

== Configuration of Power Generation Device 10 ==
FIG. 2 is a diagram illustrating a hardware configuration example of the power generation apparatus 10. The power generation apparatus 10 includes a power generation agent 11 and a generator 12. The generator 12 is assumed to be a general device that generates power by external control. The power generation agent 11 is a computer that controls the generator 12. The power generation agent 11 controls the power generator 12 so that the power generator 12 generates power in accordance with the price signal, as will be described later.

  The power generation agent 11 includes a CPU 101, a memory 102, a storage device 103, a communication interface 104, and a control interface 105. The storage device 103 stores various data and programs, for example, a flash memory, a solid state drive, a hard disk drive, and the like. The CPU 101 implements various functions by reading a program stored in the storage device 103 into the memory 102 and executing it. The communication interface 104 is an interface for connecting to the communication network 2. For example, a PLC modem for connecting to a power line and performing power line communication (PLC), a modem for connecting to a public telephone line network A wireless communication device for connecting to a wireless communication network, an adapter for connecting to Ethernet (registered trademark), and the like. The control interface 105 is an interface for connecting to the generator 12. The control interface 105 may be, for example, an interface for performing serial communication, a terminal for outputting an electrical signal, or a communication interface for performing information communication with the generator 12. May be. The power generation agent 11 can control the generator 12 by transmitting a command signal to the generator 12 via the control interface 105.

  FIG. 3 is a diagram illustrating a software configuration example of the power generation agent 11. The power generation agent 11 includes a power generation function creation unit 111, a power generation function transmission unit 112, a price signal reception unit 113, a power generation amount determination unit 114, a power generation control unit 115, a power generation information storage unit 131, a power generation function storage unit 132, and a price signal storage unit. 133 is provided.

  The power generation function creation unit 111, the power generation function transmission unit 112, the price signal reception unit 113, the power generation amount determination unit 114, and the power generation control unit 115 are stored in the storage device 103 by the CPU 101 included in the power generation agent 11 of the power generation device 10, for example. The power generation information storage unit 131, the power generation function storage unit 132, and the price signal storage unit 133 are part of the storage area provided by the memory 102 and the storage device 103. Realized.

  The power generation information storage unit 131 stores information for determining how much power is generated by the generator 12 (hereinafter referred to as power generation information). The power generation information can include, for example, the power generation cost for each time zone, the capacity of the generator 12, the amount of power that can be generated per unit time (hereinafter referred to as power generation capacity), the threshold value for the power price, and the like.

  The power generation function storage unit 132 stores information representing the relationship between the power price and the amount of power generated by the power generation apparatus 10 (hereinafter referred to as a power generation function, which corresponds to the power generation price relationship information of the present invention). In the present embodiment, the power generation function is a function that calculates the power generation amount by substituting the power price.

  The power generation function creating unit 111 creates a power generation function based on the power generation information and registers the created power generation function in the power generation function storage unit 132. Note that a known method is used for the process of creating the power generation function based on the power generation information. For example, when the power price is lower than the threshold included in the power generation information, the power generation function creating unit 111 sets the power generation amount to a predetermined minimum value (for example, 0 (zero)), and The power generation function can be created so that the power generation amount increases as the power price becomes higher than the threshold value.

  The power generation function transmission unit 112 transmits the power generation function stored in the power generation function storage unit 132 to the server 30.

  The price signal receiving unit 113 receives a price signal transmitted from the server 30. The price signal receiving unit 113 registers the price signal received from the server 30 in the price signal storage unit 133.

  The power generation amount determination unit 114 determines the power generation amount according to the price signal. In the present embodiment, the power generation amount determination unit 114 calculates the power generation amount by giving a price signal stored in the price signal storage unit 133 to the power generation function.

  The power generation control unit 115 controls the generator 12 according to the price signal. The power generation control unit 115 controls the generator 12 so that power generation is performed only for the power generation amount determined by the power generation amount determination unit 114. In addition, control of the generator 12 shall be general control.

== Processing of Power Generation Device 10 ==
FIG. 4 is a diagram illustrating a flow of processing for transmitting a power generation function from the power generation apparatus 10 to the server 30. In the present embodiment, it is assumed that the processing in FIG. 4 is performed periodically at predetermined time intervals. As shown in FIG. 4, the power generation function creation unit 111 reads the power generation information stored in the power generation information storage unit 131 (S151), and creates a power generation function based on the read power generation information (S152). The power generation function creation unit 111 registers the created power generation function in the power generation function storage unit 132 (S153), and the power generation function transmission unit 112 transmits the power generation function registered in the power generation function storage unit 132 to the server 30 (S154). ).

  FIG. 5 is a diagram showing a flow of control processing of the generator 12 according to the price signal. In the present embodiment, the process of FIG. 5 is executed every time a price signal is received. When receiving the price signal from the server 30 (S161), the price signal receiving unit 113 registers the received price signal in the price signal storage unit 133 (S162). The power generation amount determination unit 114 calculates the power generation amount by giving the price signal stored in the price signal storage unit 133 to the power generation function stored in the power generation function storage unit 132 (S163). The power generation control unit 115 acquires the power generation capability of the power generation information stored in the power generation information storage unit 131 (S164), divides the power generation amount by the power generation capability to calculate the power generation time (S165), and generates the generator only for the power generation time. The generator 12 is controlled so that 12 operates (S166).

== Configuration of Power Storage Device 20 ==
FIG. 6 is a diagram illustrating a hardware configuration example of the power storage device 20. The power storage device 20 includes a power storage agent 21 and a storage battery 22. The storage battery 22 is assumed to be a general storage battery that is charged and discharged by external control. The power storage agent 21 is a computer that controls the storage battery 22. As will be described later, the power storage agent 21 controls the storage battery 22 so that the storage battery 22 is charged or discharged according to the price signal.

  The power storage agent 21 includes a CPU 201, a memory 202, a storage device 203, a communication interface 204, and a control interface 205. The storage device 203 is, for example, a flash memory, a solid state drive, a hard disk drive, or the like that stores various data and programs. The CPU 201 implements various functions by reading the program stored in the storage device 203 into the memory 202 and executing it. The communication interface 204 is an interface for connecting to the communication network 2. For example, a PLC modem for connecting to a power line and performing power line communication (PLC), a modem for connecting to a public telephone line network A wireless communication device for connecting to a wireless communication network, an adapter for connecting to Ethernet (registered trademark), and the like. The control interface 205 is an interface for connecting to the storage battery 22. The control interface 205 may be, for example, an interface for performing serial communication, a terminal for outputting an electric signal, or a communication interface for performing information communication with the storage battery 22. Also good. The power storage agent 21 can control the storage battery 22 by transmitting a command signal to the storage battery 22 via the control interface 205.

  FIG. 7 is a diagram illustrating a software configuration example of the power storage agent 21. The storage agent 21 includes a storage function creation unit 211, a storage function transmission unit 212, a price signal reception unit 213, a charge / discharge amount determination unit 214, a charge / discharge control unit 215, a storage information storage unit 231, a storage function storage unit 232, and a price signal. A storage unit 233 is provided.

  Note that the storage function 203 is stored in the storage device 203 by the CPU 201 included in the storage agent 21 of the storage device 20 in the storage function creation unit 211, storage function transmission unit 212, price signal reception unit 213, charge / discharge amount determination unit 214, and charge / discharge control unit 215 The storage information storage unit 231, the storage function storage unit 232, and the price signal storage unit 233 are part of the storage area provided by the memory 202 and the storage device 203. As realized.

  The power storage information storage unit 231 stores information for determining how much charge or discharge the storage battery 22 performs (hereinafter referred to as power storage information). The storage information includes, for example, the charging cost for each time zone, the capacity of the storage battery 22, the discharge amount per unit time (hereinafter referred to as discharge capacity), the charge amount per unit time (hereinafter referred to as charge capacity), and the power price. A threshold value for, etc. can be included.

  The power storage function storage unit 232 stores information indicating the amount of charge by the power storage device 20, the amount of discharge from the power storage device 20, and the power price (hereinafter referred to as a power storage function, which corresponds to the power storage price related information of the present invention). . In the present embodiment, the storage function includes information indicating the relationship between the charge amount and the power price (hereinafter referred to as a charge function, which corresponds to the charge price relationship information of the present invention), and the relationship between the discharge amount and the power price. (Hereinafter, referred to as a discharge function, which corresponds to discharge price related information). In the present embodiment, the storage function, the charge function, and the discharge function are functions that calculate the charge / discharge amount, the charge amount, and the discharge amount by substituting the power price, respectively.

  The storage function creation unit 211 creates a storage function based on the storage information, and registers the created storage function in the storage function storage unit 232. Note that a known method is used for the process of creating the demand supply valence based on the storage information. For example, the storage function creation unit 211 can set the discharge amount to a predetermined minimum value (for example, 0 (zero)) when the power price is lower than the threshold included in the storage information for the discharge function. In addition, the amount of discharge can be increased as the power price is higher than the threshold value. In addition, regarding the charging function, the storage function creation unit 211 can set the storage amount to a predetermined minimum value (for example, 0 (zero)) when the power price is higher than the threshold value included in the storage information. )), And the power storage amount can be increased as the power price is lower than the threshold.

  In addition, the storage function creation unit 211 can also create a storage function according to the amount of power stored in the storage battery 22. For example, when the storage amount is smaller than a predetermined standard value (any value can be set), the storage function creation unit 211 sets the discharge amount to a predetermined minimum value (for example, regardless of the power price). 0) and the charge amount is determined so that the lower the power price, the higher the charge amount, the rated charge amount regardless of the power price, or according to other rules A charging function can be created. In addition, the storage function creation unit 211 has power when the storage amount of the storage battery 22 is greater than a predetermined standard value (an arbitrary value can be set independently of the standard value for charging). The charging function is created so that the charging amount is a predetermined minimum value (for example, 0) regardless of the price, and the rated discharging amount is used regardless of the power price so that the discharging amount increases as the power price increases. The discharge function can be created so that the discharge amount is determined according to other rules.

  The storage function transmission unit 212 transmits the storage function stored in the storage function storage unit 232 to the server 30.

  The price signal receiving unit 213 receives a price signal transmitted from the server 30. The price signal receiving unit 213 registers the price signal received from the server 30 in the price signal storage unit 233.

  The charge / discharge amount determination unit 214 determines the charge amount and the discharge amount according to the price signal. In this embodiment, the charge / discharge amount determination unit 214 calculates the discharge amount and the charge amount by giving the price signal stored in the price signal storage unit 233 to the storage function.

  The charge / discharge control unit 215 controls the storage battery 22 according to the price signal. The charge / discharge control unit 215 controls the storage battery 22 such that the storage battery 22 is discharged by the discharge amount determined by the charge / discharge amount determination unit 214 and the storage battery 22 is charged by the calculated charge amount. In addition, control of the storage battery 22 shall be general control.

== Processing of Power Storage Device 20 ==
8 and 9 are diagrams showing a flow of processing for transmitting the storage function from the storage device 20 to the server 30. FIG. In this embodiment, it is assumed that the discharge function and the charge function are transmitted separately, FIG. 8 is a diagram showing a flow of processing for transmitting the discharge function, and FIG. 9 is a flow of processing for transmitting the charge function. FIG. In the present embodiment, it is assumed that the processes shown in FIGS. 8 and 9 are performed periodically at predetermined time intervals.

  As shown in FIG. 8, the storage function creation unit 211 reads the storage information stored in the storage information storage unit 231 (S251), and creates a discharge function based on the read storage information (S252). The storage function creation unit 211 registers the created discharge function in the storage function storage unit 232 (S253), and the storage function transmission unit 212 transmits the discharge function registered in the storage function storage unit 232 to the server 30 (S254). ).

  As shown in FIG. 9, the storage function creation unit 211 reads the storage information stored in the storage information storage unit 231 (S261), and creates a charging function based on the read storage information (S262). The storage function creation unit 211 registers the created charging function in the storage function storage unit 232 (S263), and the storage function transmission unit 212 transmits the charging function registered in the storage unit storage unit 232 to the server 30 (S264). ).

  FIG. 10 is a diagram illustrating a flow of control processing of the storage battery 22 according to the price signal. In the present embodiment, the process of FIG. 10 is executed every time a price signal is received.

  When the price signal receiving unit 213 receives a price signal from the server 30 (S271), the received price signal is registered in the price signal storage unit 233 (S272). The charge / discharge amount determination unit 214 reads a threshold value included in the power storage information stored in the power storage information storage unit 231 (S273).

  When the price signal stored in the price signal storage unit 233 is larger than the threshold (S274: YES), the charge / discharge amount determination unit 214 gives a price signal to the discharge function stored in the storage function storage unit 232 and discharges it. The amount is calculated (S275). The charge / discharge control unit 215 reads the discharge capability of the storage information stored in the storage information storage unit 231 (S276), calculates the discharge time by dividing the discharge amount by the discharge capability (S277), and calculates only the calculated discharge time. The storage battery 22 is controlled so that the discharge from the storage battery 22 is performed (S278).

  On the other hand, when the price signal stored in the price signal storage unit 233 is less than or equal to the threshold (S274: NO), the charge / discharge amount determination unit 214 adds the price signal to the charge function stored in the storage function storage unit 232 And charge amount is calculated (S279). The charge / discharge control unit 215 reads the charge capability of the storage information stored in the storage information storage unit 231 (S280), calculates the charge time by dividing the charge amount by the charge capability (S281), and only the calculated charge time The storage battery 22 is controlled so that the storage battery 22 is charged (S282).

== Configuration of Server 30 ==
FIG. 11 is a diagram illustrating a heartware configuration example of the server 30. The server 30 includes a CPU 301, a memory 302, a storage device 303, a communication interface 304, an input device 305, and an output device 306. The storage device 303 is, for example, a hard disk drive, a solid state drive, or a flash memory that stores various data and programs. The CPU 301 implements various functions by reading the program stored in the storage device 303 into the memory 302 and executing it. The communication interface 304 is an interface for connecting to the communication network 2. For example, a PLC modem for connecting to a power line and performing power line communications (PLC), a modem for connecting to a public telephone line network An adapter for connecting to Ethernet (registered trademark), a wireless communication device for connecting to a wireless communication network, and the like. The input device 305 is a keyboard, mouse, trackball, touch panel, microphone, or the like that accepts data input. The output device 306 is, for example, a display, a printer, or a speaker that outputs data.

  FIG. 12 is a diagram illustrating a software configuration example of the server 30. The server 30 includes a demand amount acquisition unit 311, a power generation function acquisition unit 312, a storage function acquisition unit 313, a demand supply amount creation unit 314, an appropriate price determination unit 315, a price signal transmission unit 316, a demand supply curve storage unit 331, and a power generation function. A storage unit 332, a power storage function storage unit 333, and a reasonable price storage unit 334 are provided.

  Note that the demand amount acquisition unit 311, the power generation function acquisition unit 312, the storage function acquisition unit 313, the demand supply amount creation unit 314, the appropriate price determination unit 315, and the price signal transmission unit 316 are stored in the storage device 303 by the CPU 301 included in the server 30. It is realized by reading the stored program into the memory 302 and executing it, and the demand supply curve storage unit 331, the power generation function storage unit 332, the storage function storage unit 333, and the reasonable price storage unit 334 include the memory 302 and the storage device 303. This is realized as a part of the storage area provided by.

  The demand amount acquisition unit 311 acquires the demand amount of power from the load 1. The process in which the demand amount acquisition unit 311 acquires the demand amount from the load 1 can be a general process. For example, the demand amount acquisition unit 311 may receive a demand amount that is periodically transmitted from the load 1, or transmits a request to the load 1 and determines a demand amount that is responded to the request. You may make it receive. The demand amount acquisition unit 311 may receive an input of the demand amount of each load 1 from the operator, or may receive an input of a total value of the demand amounts of the load 1 (hereinafter referred to as a total demand amount). It may be. The demand amount acquisition unit 311 calculates the total demand amount by summing the demand amounts of the load 1 and registers the calculated total demand amount in the demand supply curve storage unit 331.

  The power generation function acquisition unit 312 receives the power generation function transmitted from the power generation device 10. The power generation function acquisition unit 312 registers the power generation function for each power generation device 10 in the power generation function storage unit 332. When the power generation function corresponding to the power generation device 10 is registered in the power generation function storage unit 332, the power generation function is updated.

  The storage function acquisition unit 313 receives the storage function transmitted from the storage device 20. As described above, in this embodiment, the discharge function and the charge function are received. The storage function acquisition unit 313 registers the storage function for each storage device 20 in the storage function storage unit 333. When the storage function corresponding to the storage device 20 is registered in the storage function storage unit 333, the storage function is updated.

  Based on the power generation function for each power generation device 10 and the discharge function for each power storage device 20, the demand supply amount creation unit 314 changes the power generation amount and the total discharge amount (hereinafter referred to as the total supply amount) with respect to the power price. A function (hereinafter referred to as a supply function) representing a curve representing power (that is, a power supply curve) is created, and the total charge amount (hereinafter referred to as total charge) based on the charge function for each power storage device 20. A function (hereinafter, referred to as a demand function) representing a curve representing a change in power price (namely, a demand curve for power demand by the power storage device 20) is created. The demand supply amount creation unit 314 registers the created supply function and demand function in the demand supply curve storage unit 331. The supply function may be a table including the total supply amount for each power price, and the demand function may be a table including the total value of the total charge amount for each power price.

  The appropriate price determination unit 315 determines an appropriate price according to the total demand amount, the total charge amount, and the total supply amount. The appropriate price determination unit 315 determines the power price that is the intersection of the supply curve and the curve obtained by shifting the demand curve by the total demand as the appropriate price.

  FIG. 13 is a diagram illustrating a method for determining an appropriate price. As shown in FIG. 13 (a), in the supply curve 41 showing the relationship between the supply amount obtained by adding up the power generation amount and the discharge amount and the power price, the power price corresponding to the total demand is the current power price. it is conceivable that. Further, as shown in FIG. 13B, in the demand curve 44 regarding the charge amount based on the charge function, it is assumed that the charge amount generally decreases as the price decreases from the predetermined maximum power purchase price. As shown in FIG. 13C, when the demand curve 44 ′ obtained by shifting the demand curve 44 of the charge amount by the total demand amount of the load 1 (to the right in FIG. 13) and the supply curve 41 are plotted, When the amount of charge by the power storage device 20 is taken into consideration, it can be understood that the supply and demand can be balanced at a price higher than the power price corresponding to the total demand amount of the load 1. Therefore, the appropriate price determination unit 315 determines the price corresponding to the intersection 45 as the appropriate price, as shown in FIG. The appropriate price determination unit 315 registers the determined appropriate price in the appropriate price storage unit 334.

  The price signal transmission unit 316 transmits a price signal indicating an appropriate price stored in the appropriate price storage unit 334 to each of the power generation device 10 and the power storage device 20. Thereby, in the electric power generating apparatus 10 and the electrical storage apparatus 20, the control of the electric power generation, charging, and discharging according to an appropriate price is performed.

== Processing of Server 30 ==
FIG. 14 is a diagram illustrating a flow of processing for determining the total supply amount for each power price. When receiving the power generation function from the power generation apparatus 10, the power generation function acquisition unit 312 registers it in the power generation function storage unit 332 (S351). When the storage function acquisition unit 313 receives the discharge function from the storage device 20, the storage function acquisition unit 313 registers the storage function in the storage function storage unit 333 (S352). For each power price (for example, by changing the power price by 1 yen from a predetermined minimum value to a predetermined maximum value), the demand supply amount creation unit 314 is configured for each power generation device 10 registered in the power generation function storage unit 332. A power price is given to each power generation function to calculate a power generation amount, and a power price is given to each discharge function for each power storage device 20 registered in the power storage function storage unit 333 to calculate a discharge amount. The total amount is calculated by summing the amounts (S353). The demand supply amount creation unit 314 registers the calculated total supply amount for each power price in the demand supply curve storage unit 331 (S354).

  FIG. 15 is a diagram illustrating a process flow for determining the total charge amount for each power price. When the storage function acquisition unit 313 receives the charge function from the storage device 20, the storage function acquisition unit 313 registers the storage function in the storage function storage unit 333 (S361). For each power price, the demand supply amount creation unit 314 calculates the charge amount by giving the power price to each charge function registered in the storage function storage unit 333, and calculates the total charge amount by summing the charge amount. (S362). The demand supply amount creation unit 314 registers the calculated total charge amount for each power price in the demand supply curve storage unit 331 (S363).

  FIG. 16 is a diagram illustrating a flow of processing for transmitting a price signal indicating an appropriate price. The demand amount acquisition unit 311 acquires the demand amount from the load 1 and calculates the total demand amount by summing the demand amounts (S371). The appropriate price determination unit 315 determines a supply curve and a demand curve from the total supply amount and the total charge amount for each power price registered in the demand supply curve storage unit 331 (S372), and corresponds to the total demand amount from the supply curve. The power price to be determined is determined as the current price (S373).

  When the current price is higher than the predetermined maximum price (S374: NO), the appropriate price determination unit 315 registers the current price as the appropriate price in the appropriate price storage unit 334 (S375).

  When the current price is equal to or lower than the predetermined maximum amount (S374: YES), the appropriate price determination unit 315 shifts the demand curve representing the total charge amount for each price by the total demand amount (S376), and FIG. A demand curve 44 ′ as shown in FIG. The reasonable price determination unit 315 determines the power price corresponding to the intersection between the shifted demand curve and the supply curve, that is, the intersection 45 shown in FIG. 13D as a reasonable price (S377), and determines the determined reasonable price as the reasonable price. Registration is performed in the storage unit 334 (S378).

  The price signal transmission unit 316 transmits a price signal indicating an appropriate price stored in the appropriate price storage unit 334 to the power generation device 10 and the power storage device 20 (S379). As a result, the power generation device 10 and the power storage device 20 perform power generation, charging, and discharging control according to the price signal.

== Effects of this power system ==
As described above, according to the power system of the present embodiment, the power generation apparatus 10 periodically updates the power generation function based on the power generation information, and periodically transmits the power generation function to the server 30. be able to. Thereby, in the server 30, the price property of the electric power generating apparatus 10 can be grasped | ascertained.

  Further, according to the power system of the present embodiment, the power storage device 20 periodically updates the power storage function (discharge function and charge function) based on the power storage information, and periodically transmits the power storage function to the server 30. Can be. As a result, the server 30 can grasp the price of charging and discharging by the power storage device 20.

  Further, according to the power system of the present embodiment, the server 30 acquires the price of power generation by the power generation device 10 from the power generation device 10, acquires the price of charge and discharge from the power storage device 20, and the price properties of these. Accordingly, it is possible to determine an appropriate power price that balances supply and demand.

  In the power system of the present embodiment, the appropriate price determined by the server 30 is transmitted to the power generation device 10 and the power storage device 20 as a price signal. In the power generation apparatus 10, the power generation amount is generated by applying the price signal from the server 30 to the power generation function. Therefore, efficient and economical power generation control can be performed in consideration of the power generation cost and the like. Further, in the power storage device 20, when the appropriate price exceeds a predetermined threshold value, the discharge amount is applied by applying the price signal from the server 30 to the discharge function. Since the applied charge amount is charged, efficient and economical charge / discharge control can be performed according to the charge cost and the selling price.

  Further, according to the power system of the present embodiment, the server 30 simply generates a price signal indicating an appropriate price to the power generation device 10 and the power storage device 20, and generates power from the generator 12 and discharges from the storage battery 22. The charging control itself can be autonomously performed by the power generation device 10 and the power storage device 20. Therefore, the processing load of the server 30 can be reduced as compared with the case where the server 30 performs all power generation, discharging, and charging control. On the other hand, since the power generation device 10 and the power storage device 20 perform autonomous control of power generation, discharge, and charging in accordance with appropriate prices, it is possible to maintain a balance between supply and demand as a whole.

  Moreover, in the electric power system of this embodiment, the electric power demand by the load 1 is adjusted by autonomously controlling charging / discharging in the storage battery 22 according to the price signal using the price of discharging and charging in the power storage device 20. You can balance supply and demand as a whole without doing it. Therefore, even in a situation where the demand cannot be adjusted in the load 1, it is possible to set a price that balances the overall supply and demand by installing the power storage device 20 in the same area.

== Modification ==
In the present embodiment, the supply function creation unit 111 included in the power generation agent 11 of the power generation apparatus 10 creates the supply function based on the power generation information stored in the power generation information storage unit 131. However, the present invention is not limited to this. For example, an input of a supply function may be received from an operator. Similarly, the power storage function creating unit 211 included in the power storage agent 21 of the power storage device 20 creates the power storage function based on the power storage information stored in the power storage information storage unit 231. You may make it receive the input of an electrical storage function from an operator.

  In the present embodiment, the processes of FIGS. 4, 8, and 9 are performed periodically at predetermined time intervals. However, the present invention is not limited to this. For example, the supply function creation unit 111 or the storage function When the creation unit 211 receives an instruction from the operator, the supply function and the storage function are created when the generation information in the generation information storage unit 131 or the storage information in the storage information storage unit 231 is updated. You may make it update.

  In the present embodiment, the supply function and the storage function are transmitted to the server 30 each time the supply function and the storage function are created in the processes of FIGS. 4, 8, and 9, but are transmitted at an arbitrary timing. May be. For example, the supply function transmission unit 112 and the storage function transmission unit 212 may respond with a supply function and a storage function in response to a request from the server 30.

  Further, in the present embodiment, the processing of FIG. 5 and FIG. 10 is executed every time a price signal is received. However, the present invention is not limited to this. For example, the price signal receiving unit 113 and the price signal receiving unit 213 A price signal sent to the server 30 at an arbitrary timing (for example, when the power generation information and the storage information are updated, or when the supply function and the storage function are updated), and the server 30 responds in response to the request. May be received and the processing of FIGS. 5 and 10 may be executed.

  In the present embodiment, the power generation control unit 115 and the charge / discharge control unit 215 control the generator 12 and the storage battery 22 every time a price signal is received. Control may be performed. In addition, at the timing when the operation of the generator 12 and the storage battery 22 for only the power generation time, the discharge time, and the charging time is completed, steps S163 to S166 in FIG. 5, steps S275 to S278 in FIG. 10, and steps S279 to S282 in FIG. May be executed.

  In the present embodiment, the generator 12 and the storage battery 22 are operated only for the power generation time obtained by dividing the power generation amount by the power generation capability, the discharge time obtained by dividing the discharge amount by the discharge capability, and the charge time obtained by dividing the charge amount by the charge capability. However, the present invention is not limited to this, and the amount of power output from the generator 12, the amount of discharge output from the storage battery 22, and the amount of charge for the storage battery 22 can be adjusted. Any known method can be used as long as it is possible.

  In the present embodiment, the supply function and the storage function (including the charge function and the discharge function) are functions for calculating the power generation amount or the charge / discharge amount by substituting the power price. Instead, it may be information indicating the relationship between the power price and the amount of power generation or charge / discharge. For example, the power generation amount or the charge / discharge amount may be managed in association with the power price for each predetermined unit amount (for example, any amount such as 1 yen, 5 yen, 10 yen, etc.).

  The supply function and the storage function (including the charge function and the discharge function) are information indicating the relationship between the power price, the power generation amount, and the charge / discharge amount. Information indicating the price elasticity of the power generation amount or the charge / discharge amount.

  In the present embodiment, the total supply amount and the total charge amount for each power price are recorded as a table, and the supply curve and the demand curve are determined based on the table. For example, the power generation function and the storage function are equations. In this case, the supply function and the demand function can also be expressed by an equation. In this case, the intersection of the supply function and the demand function is calculated by using the equation. You may make it do.

  In the present embodiment, the power generation apparatus 10 includes the power generation agent 11 and the power generator 12. However, the power generation agent 11 and the power generator 12 may be provided as separate apparatuses. Similarly, the power storage agent 21 and the storage battery 22 may be provided as separate devices. One power generation agent 11 may control a plurality of generators 12 and one power storage agent 21 may control a plurality of storage batteries 22.

  In the present embodiment, the server 30 is a single computer, but may be realized by a plurality of computers. In this case, for example, one virtual computer may be realized by a plurality of computers, or a storage unit and a function unit may be distributed to a plurality of computers.

  Although the present embodiment has been described above, the above embodiment is intended to facilitate understanding of the present invention and is not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

DESCRIPTION OF SYMBOLS 10 Power generation device 20 Power storage device 30 Server 111 Power generation function creation unit 112 Power generation function transmission unit 113 Price signal reception unit 114 Power generation amount determination unit 115 Power generation control unit 131 Power generation information storage unit 132 Power generation function storage unit 133 Price signal storage unit 211 Power storage function Creation unit 212 Storage function transmission unit 213 Price signal reception unit 214 Charge / discharge amount determination unit 215 Charge / discharge control unit 231 Storage information storage unit 232 Storage function storage unit 233 Price signal storage unit 311 Demand amount acquisition unit 312 Power generation function acquisition unit 313 Storage Function acquisition unit 314 Demand supply amount creation unit 315 Appropriate price determination unit 316 Price signal transmission unit 331 Demand supply curve storage unit 332 Power generation function storage unit 333 Power storage function storage unit 334 Appropriate price storage unit

Claims (5)

A power generation device that generates a power generation amount according to a power price and a power storage device that performs charging or discharging according to the power price are communicably connected,
A demand amount obtaining unit for obtaining a total demand amount by a power device other than the power storage device;
A storage price relation information acquisition unit for acquiring storage price relation information indicating the relationship between the power price and the charge amount and discharge amount from the power storage device;
A power generation price relationship information acquisition unit that acquires power generation price relationship information indicating the relationship between the power price and the power generation amount from the power generation device;
Based on the power generation price relationship information, the power storage price relationship information, and the total demand amount, a supply curve representing a change in supply amount that is a total value of the power generation amount and the discharge amount according to the power price, and the power A reasonable price determination unit that determines a reasonable price that is the power price corresponding to an intersection with a demand curve that represents a change in a value obtained by adding the total demand to the total value of the charge according to the price ;
A price signal transmission unit that transmits a price signal indicating the appropriate price to the power storage device and the power generation device;
A power supply and demand adjustment device comprising: The power supply and demand adjustment device according to claim 1 ,
The storage price relationship information includes discharge price relationship information indicating a relationship between the power price and the discharge amount, and charge price relationship information indicating a relationship between the power price and the charge amount,
Electric power supply and demand adjustment device characterized by. A power generation device that generates power according to a power price; a power storage device that performs charging or discharging according to the power price; and a server device that is communicably connected to each of the power generation device and the power storage device. Comprising and including
The power generator is
A power generation price relation information creating unit that creates power generation price relation information indicating the relationship between the power price and the power generation amount;
A power generation price related information transmitting unit for transmitting the power generation price related information to the server device;
With
The power storage device
A storage price relation information creating unit that creates storage price relation information indicating a relationship between the power price and the charge amount and the discharge amount;
An electricity storage price related information transmitting unit for transmitting the electricity storage price related information to the server device;
With
The server device
A demand amount obtaining unit for obtaining a total demand amount by a power device other than the power storage device;
A power generation price related information acquisition unit for acquiring the power generation price related information from the power generation device;
A storage price related information acquisition unit for acquiring the storage price related information from the power storage device;
Based on the power generation price relationship information, the power storage price relationship information, and the total demand amount, a supply curve representing a change in supply amount that is a total value of the power generation amount and the discharge amount according to the power price, and the power A reasonable price determination unit that determines a reasonable price that is the power price corresponding to an intersection with a demand curve that represents a change in a value obtained by adding the total demand to the total value of the charge according to the price ;
A price signal transmission unit that transmits a price signal indicating the appropriate price to the power generation device and the power storage device;
With
The power generator is
A price signal receiving unit for receiving the price signal from the server device;
A power generation amount determination unit that determines the power generation amount according to the price signal based on the power generation price relation information;
A power generation control unit that performs control for power generation of the power generation amount;
With
The power storage device
A price signal receiving unit for receiving the price signal from the server device;
A charge / discharge amount determination unit that determines the charge amount and the discharge amount according to the price signal based on the storage price related information;
A charge / discharge control unit for performing control for charging the charge amount and discharging the discharge amount;
Providing
Power supply and demand adjustment system characterized by A computer that is communicably connected to each of a power storage device that performs charging or discharging according to a power price and a power generation device that generates a power generation amount according to the power price,
Obtaining a total demand amount by a power device other than the power storage device;
Obtaining power generation price relationship information indicating the relationship between the power price and the power generation amount from the power generation device;
Obtaining power storage price relationship information indicating the relationship between the power price and the charge amount and the discharge amount from the power storage device;
Based on the power generation price relationship information, the power storage price relationship information, and the total demand amount, a supply curve representing a change in supply amount that is a total value of the power generation amount and the discharge amount according to the power price, and the power Determining an appropriate price that is the power price corresponding to an intersection with a demand curve representing a change in a value obtained by adding the total demand to the total value of the charge according to the price;
Transmitting a price signal indicating the appropriate price to the power storage device and the power generation device;
The power supply and demand adjustment method characterized by performing. A computer connected to be communicable with each of a power storage device that performs charging or discharging according to a power price and a power generation device that generates a power generation amount according to the power price,
Obtaining a total demand amount by a power device other than the power storage device;
Obtaining power generation price relationship information indicating the relationship between the power price and the power generation amount from the power generation device;
Obtaining power storage price relationship information indicating a relationship between the power price and the charge amount and discharge amount;
Based on the power generation price relationship information, the power storage price relationship information, and the total demand amount, a supply curve representing a change in supply amount that is a total value of the power generation amount and the discharge amount according to the power price, and the power Determining an appropriate price that is the power price corresponding to an intersection with a demand curve representing a change in a value obtained by adding the total demand to the total value of the charge according to the price;
Transmitting a price signal indicating the appropriate price to the power storage device and the power generation device;
A program for running

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