Power supply control device and power supply control method

Abstract

To provide a power supply control device and a power supply control method that can appropriately cope with two or more demand response (DR) requests.SOLUTION: In a power supply control system supplying power from an electric power system to a facility, a RA server 200 that is a power supply control device for drawing up a control plan for a distributed power supply (solar cell device, power storage device, and fuel cell device) comprises: a receiving unit that receives demand response requests for requesting supply and demand adjustment in the electric power system; a control unit that draws up the control plan for the distributed power supply installed in the facility for a target period; and a transmission unit that assumes reception of two or more demand response requests for the target period as the demand response requests, and transmits specification information for specifying an adjustable amount for each of the two or more demand response requests.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a power control device and a power control method.

Background Art

[0002] In recent years, in order to maintain the power supply-demand balance of the power system, a technology (for example, VPP (Virtual Power Plant)) that uses a power storage device installed in a facility as a distributed power source is known.

[0003] For example, a technique has been proposed in which the power storage device is charged during a time period when the purchase unit price of the power supplied from the power system to the facility (inflow power) is relatively low, and the power storage device is discharged during a time period when the purchase unit price of the inflow power is relatively high. Further, a technique has also been proposed in which the reward unit price for an adjustment request (hereinafter, DR (Demand Response) request) that requests a decrease in the demand power of the facility is added to the purchase unit price, thereby promoting the discharge of the power storage device during the time period of the DR request (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in a target period (for example, one day) that can be the target of a DR request, a case where two or more DR requests are issued is assumed, and it is necessary to appropriately respond to two or more DR requests.

[0006] Therefore, the present invention has been made to solve the above-described problems, and an object thereof is to provide a power control device and a power control method that can appropriately respond to two or more DR requests.

Means for Solving the Problems

[0007] The disclosed aspect is a power control device including a receiving unit that receives an adjustment request for requesting power supply and demand adjustment of a power system, a control unit that controls a distributed power source installed in a facility, and a transmitting unit that transmits specific information for specifying an adjustable amount for each of the two or more adjustment requests assuming reception of the two or more adjustment requests for a target period as the adjustment request.

[0008] The disclosed aspect is a power control method including step A of receiving an adjustment request for requesting power supply and demand adjustment of a power system, step B of controlling a distributed power source installed in a facility, and step C of transmitting specific information for specifying an adjustable amount for each of the two or more adjustment requests assuming reception of the two or more adjustment requests for a target period as the adjustment request.

Effect of the Invention

[0009] According to the present invention, it is possible to provide a power control device and a power control method that can appropriately respond to two or more DR requests.

Brief Description of the Drawings

[0010]

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Figure 12

[0011] Hereinafter, the embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic.

[0012] [Embodiment] (Power Supply Control System) Hereinafter, a power supply control system according to the embodiment will be described.

[0013] As shown in FIG. 1, the power supply control system 1 includes a facility 100. The power supply control system 1 includes an RA (Resource Aggregator) server 200 and an AC (Aggregation Coordinator) server 300.

[0014] Here, the facility 100, the RA server 200, and the AC server 300 are configured to be communicable via the network 11. The network 11 may include the Internet, may include a dedicated line such as a VPN (Virtual Private Network), or may include a mobile communication network.

[0015] Facility 100 is connected to the power grid 12, and may be supplied with power from the power grid 12 or may supply power to the power grid 12. The power from the power grid 12 to Facility 100 may be referred to as forward power flow. The power from Facility 100 to the power grid 12 may be referred to as reverse power flow. In FIG. 1, Facilities 100A to 100C are illustrated as Facility 100.

[0016] Although not particularly limited, Facility 100 may be a facility such as a residence, a facility such as a store, or a facility such as an office. Facility 100 may be an apartment building including two or more residences. Facility 100 may be a complex facility including at least two or more of the facilities of residence, store, and office. Details of Facility 100 will be described later (see FIG. 2).

[0017] The RA server 200 is a server managed by an operator (for example, a VPP (Virtual Power Plant) operator) who is responsible for controlling distributed power sources (for example, the energy storage device 120 described later) installed in Facility 100. The RA server 200 may be read as the VPP operator. The RA server 200 may be referred to as the first server or a subordinate server. Details of the RA server 200 will be described later (see FIG. 3).

[0018] In the embodiment, the RA server 200 constitutes a power control device that formulates a control plan for distributed power sources installed in Facility 100.

[0019] The AC server 300 is a server managed by an operator (for example, a retail electricity operator) who sells power to Facility 100. The retail electricity operator may procure power from the power market or a power generation operator and sell the procured power to Facility 100. The retail electricity operator is an example of a specific operator who sells power to Facility 100. The AC server 300 may be read as the retail electricity operator. The AC server 300 may be referred to as the second server or a superior server. Details of the AC server 300 will be described later (see FIG. 4).

[0020] Although not particularly limited, the power market may be a market for trading electricity during a target period (for example, one day from 0:00 to 24:00). The power market may be a market in which electricity prices are determined for each unit period (for example, 30 minutes) that constitutes the target period. The power market may include a spot market in which trading is closed on the day before the target period (for example, 10:00 on the day before the target period). The power market may include a time - before market in which trading is closed immediately before each unit period that constitutes the target period (for example, one hour before). The power market may include a forward market, a power forward market, a futures market, a capacity market, or a demand - supply adjustment market for trading electricity during a specific future period (for example, one year, one month, or one week).

[0021] Although not particularly limited, the power generation business operator may include a business operator that trades electricity in the power market, and may also include a business operator that directly trades electricity with a retail electricity business operator.

[0022] The AC server 300 may transmit an adjustment request for requesting demand - supply adjustment of the power system 12. The adjustment request may be referred to as a DR (Demand Response) request. The DR request may include an up - DR request for requesting an increase in the demand power of the facility 100 from a reference value, and may also include a down - DR request for requesting a decrease in the demand power of the facility 100 from the reference value.

[0023] The reference value is the demand power of the facility 100 before the DR request. The reference value is a value in which, in addition to the power consumption of the facility 100 (the power consumption of the load device 140), the power generation power of the power generation device (for example, the solar cell device 110 and the fuel cell device 130), and the charging power and discharging power of the power storage device 120 are reflected. The reference value may be considered as the baseline power. The baseline power may be the average value of the demand power for a certain period before the announcement of the activation of the DR request. The certain period may be determined according to the entity of the negative - watt trading, or may be determined between the RA server 200 and the AC server 300. The baseline power may be calculated based on the predicted value of the demand power of the facility 100, may be calculated based on the predicted value of the power generation power of the facility 100, or may be calculated based on both the demand power and the power generation power.

[0024] In addition, when the increase or decrease in the demand power of the facility 100 is executed in response to a DR request, a reward may be given according to the degree corresponding to the DR request. The reward may be given to the AC server 300 or may be given to the facility 100. When the increase or decrease in the demand power of the facility 100 is not executed in response to a DR request, a penalty may be imposed according to the degree to which the DR request cannot be responded to. The penalty may be imposed on the AC server 300 or may be imposed on the facility 100. The penalty may be imposed only on the facility 100 that has responded to the effect of responding to the DR request. The reward and the penalty may be monetary.

[0025] (Facility) Hereinafter, the facility according to the embodiment will be described. As shown in FIG. 2, the facility 100 includes a solar power generation device 110, a power storage device 120, a fuel cell device 130, a load device 140, and an EMS (Energy Management System) 160. The facility 100 may include a measurement device 190.

[0026] The solar power generation device 110 is a distributed power source that generates electricity in response to light such as sunlight. For example, the solar power generation device 110 is composed of a PCS (Power Conditioning System) and a solar panel. Here, the installation may mean that the solar power generation device 110 and the power grid 12 are connected.

[0027] The power storage device 120 is a distributed power source that charges and discharges electric power. For example, the power storage device 120 is composed of a PCS and a storage cell. Here, the installation may mean that the power storage device 120 and the power grid 12 are connected.

[0028] The fuel cell device 130 is a distributed power source that generates electricity using fuel. For example, the fuel cell device 130 is composed of a PCS and a fuel cell. Here, the installation may mean that the fuel cell device 130 and the power grid 12 are connected.

[0029] For example, the fuel cell device 130 may be a solid oxide fuel cell (SOFC), a polymer electrolyte fuel cell (PEFC), a phosphoric acid fuel cell (PAFC), or a molten carbonate fuel cell (MCFC).

[0030] The load device 140 is a device that consumes power. For example, the load device 140 may include an air conditioner, a heat pump water heater, a lighting device, and the like.

[0031] The EMS 160 manages the power related to the facility 100. The EMS 160 may control the solar cell device 110, the power storage device 120, the fuel cell device 130, and the load device 140. In the embodiment, the EMS 160 is exemplified as a device that receives a control command from the RA server 200, but such a device may be referred to as a Gateway or simply as a control unit. The control command may be an instruction or command for controlling a distributed power source (for example, the power storage device 120). The EMS 160 may be referred to as a LEMS (Local EMS), a HEMS (Home EMS), or a VPP controller in order to distinguish it from the RA server 200.

[0032] The measurement device 190 measures the forward power flow (hereinafter also referred to as demand power) from the power grid 12 to the facility 100. The measurement device 190 may measure the reverse power flow from the facility 100 to the power grid 12. For example, the measurement device 190 may be a Smart Meter belonging to an electric power company. The measurement device 190 may transmit an information element indicating the measurement result (integrated value of forward power flow or reverse power flow) in the first interval (for example, 30 minutes) to the EMS 160 for each first interval. The measurement device 190 may transmit an information element indicating the measurement result in a second interval (for example, 1 minute) shorter than the first interval to the EMS 160.

[0033] (RA Server) Hereinafter, the RA server according to the embodiment will be described. As shown in FIG. 3, the RA server 200 includes a communication unit 210, a management unit 220, and a control unit 230.

[0034] The communication unit 210 is composed of a communication module. The communication module may be a wireless communication module compliant with standards such as IEEE802.11a / b / g / n / ac / ax, ZigBee, Wi-SUN, LTE, 5G, 6G, etc., or may be a wired communication module compliant with standards such as IEEE802.3.

[0035] First, the communication unit 210 may receive a DR request for requesting demand-supply adjustment of the power system 12. As described above, the DR request may include a downward DR for requesting a decrease in the demand power of the facility 100, or may include an upward DR for requesting an increase in the demand power of the facility 100.

[0036] Second, the communication unit 210 may receive from the AC server 300 (retail electricity provider) a plan for the price of the electricity sold by the retail electricity provider to the facility 100 (hereinafter, price plan). The price of the electricity sold by the retail electricity provider to the facility 100 may be read as the electricity purchased by the facility 100 from the retail electricity provider. The communication unit 210 may receive from the AC server 300 (retail electricity provider) the cost of the electricity procured by the retail electricity provider from the power market or power generator (hereinafter, procurement cost).

[0037] Thirdly, the communication unit 210 may receive the facility information of the facility 100. The facility information may include information indicating the configuration of the distributed power sources of the facility 100, and may also include information indicating the specifications of the distributed power sources of the facility 100. The communication unit 210 may receive the planned value of the power consumption of the facility 100, and may also receive the actual value of the power consumption of the facility 100. The communication unit 210 may receive the planned value of the generated power of the distributed power sources installed in the facility 100, and may also receive the actual value of the generated power of the distributed power sources installed in the facility 100. The communication unit 210 may receive the planned value of the demand power of the facility 100, and may also receive the actual value of the demand power of the facility 100. Note that the demand power is the value obtained by subtracting the generated power from the power consumption. When the distributed power source is the energy storage device 120, the communication unit 210 may receive information indicating the remaining charge amount of the energy storage device 120 (for example, SOC; State Of Charge) (hereinafter, remaining charge amount information).

[0038] Fourthly, the communication unit 210 may transmit a control command for controlling the distributed power sources (for example, the energy storage device 120) installed in the facility 100 to the facility 100.

[0039] Fifthly, the communication unit 210 transmits specific information for specifying the adjustable amount for the DR request. The communication unit 210 transmits the specific information to the AC server 300. Here, the communication unit 210 assumes the reception of two or more DR requests for the target period (hereinafter, the planned target period) for formulating the control plan of the distributed power source (for example, the energy storage device 120), and transmits specific information for specifying the adjustable amount for each of the two or more DR requests. The adjustable amount may be referred to as the DR available amount. The DR available amount may include the downward DR available amount and may also include the upward DR available amount. The following options are conceivable as the DR available amount.

[0040] In Option A, the DR available amount may include information indicating the remaining charge amount of the power storage device 120. The remaining charge amount may be expressed in Wh or kWh. The remaining charge amount may be expressed by SOC (%). The remaining charge amount may be used as an example of the downward DR available amount, and may also be used as an example of the upward DR available amount together with Option F (the charge capacity of the power storage device 120) described later.

[0041] In Option B, the DR available amount may include information indicating the dischargeable power amount of the power storage device 120. The dischargeable power amount may be expressed in Wh or kWh. The dischargeable power amount may be expressed by the dischargeable SOC (%). The dischargeable SOC (%) may, in combination with Option F (the charge capacity of the power storage device 120) described later, represent the dischargeable power amount (Wh or kWh). The dischargeable power amount may be the power amount per planned unit period (for example, 30 minutes) described later. The dischargeable power amount may be used as an example of the downward DR available amount.

[0042] In Option C, the DR available amount may include information indicating the chargeable power amount of the power storage device 120. The chargeable power amount may be expressed in Wh or kWh. The chargeable power amount may be expressed by the chargeable SOC (%). The chargeable SOC (%) may, in combination with Option F (the charge capacity of the power storage device 120) described later, represent the chargeable power amount (Wh or kWh). The chargeable power amount may be the power amount per planned unit period (for example, 30 minutes) described later. The chargeable power amount may be used as an example of the upward DR available amount.

[0043] In Option D, the DR available amount may include information indicating the dischargeable power of the power storage device 120. The dischargeable power may be expressed in W or kW. The dischargeable power may be considered as the capacity that the power storage device 120 has. The dischargeable power may be used as an example of the downward DR available amount. Since the dischargeable power is not a value that changes moment by moment, it may be transmitted to the AC server 300 in advance.

[0044] In Option E, the DR available amount may include information indicating the chargeable power of the power storage device 120. The chargeable power may be expressed in W or kW. The chargeable power may be considered as the capacity of the power storage device 120. The chargeable power may be used as an example of the upward DR available amount. Since the chargeable power is not a value that changes from moment to moment, it may be transmitted to the AC server 300 before receiving a DR request.

[0045] In Option F, the DR available amount may include information indicating the storage capacity of the power storage device 120. The storage capacity may be expressed in Wh or kWh. The storage capacity may be used as an example of the upward DR available amount and may also be used as an example of the downward DR available amount. Since the storage capacity is not a value that changes from moment to moment, it may be transmitted to the AC server 300 before receiving a DR request. However, when the storage capacity changes due to the deterioration of the power storage device 120, the changed storage capacity may be transmitted to the AC server 300 again.

[0046] In Option G, the DR available amount may include information indicating the minimum value of the remaining storage amount of the power storage device 120 during the target period. The minimum value of the remaining storage amount may be expressed in Wh or kWh. The minimum value of the remaining storage amount may be used as an example of the upward DR available amount in combination with Option F (the storage capacity of the power storage device 120).

[0047] In Option H, the DR available amount may include information indicating the maximum value of the remaining storage amount of the power storage device 120 during the target period. The maximum value of the remaining storage amount may be expressed in Wh or kWh. The maximum value of the remaining storage amount may be used as an example of the downward DR available amount in combination with Option F (the storage capacity of the power storage device 120).

[0048] In Option I, the DR available amount may include information indicating the available power amount corresponding to a DR request. The available power amount may be expressed in Wh or kWh. The available power amount is the power amount by which the demand power of Facility 100 can be reduced or increased. The available power amount may include the power amount adjustable by the power storage device 120, or may not include the power amount adjustable by the power storage device 120. The power amount adjustable outside the power storage device 120 may include the power consumption of the load device 140 of Facility 100, the output power of distributed power sources other than the power storage device 120, and the like. The available power amount may be used as the upward DR available amount or the downward DR available amount.

[0049] Two or more options selected from the above-described Options A to I may be combined.

[0050] In an embodiment, the communication unit 210 constitutes a receiving unit that receives an adjustment request (DR request) for requesting supply-demand adjustment of the power system 12.

[0051] In an embodiment, the communication unit 210 constitutes a transmitting unit that transmits specific information for specifying the adjustable amount for each of two or more adjustment requests, assuming reception of two or more adjustment requests for a target period as an adjustment request (DR request).

[0052] The management unit 220 is composed of a storage medium such as an HDD (Hard Disk Drive), an SSD (Solid State Drive), and a non-volatile memory.

[0053] For example, the management unit 220 may manage information regarding the facility 100 having a distributed power source controlled by the RA server 200. For example, the information regarding the facility 100 may include the type of the distributed power source (solar cell device 110, power storage device 120, or fuel cell device 130) provided in the facility 100, the specifications of the distributed power source (solar cell device 110, power storage device 120, or fuel cell device 130) provided in the facility 100, and the like. The specifications may include the rated power generation power of the solar cell device 110, the rated charging power of the power storage device 120, the rated discharging power of the power storage device 120, and the rated output power of the fuel cell device 130. The specifications may include the rated capacity of the power storage device 120, the maximum charge / discharge power, and the like.

[0054] The control unit 230 may include at least one processor. The at least one processor may be constituted by a single integrated circuit (IC), or may be constituted by a plurality of circuits (such as integrated circuits and / or discrete circuits) communicably connected.

[0055] The control unit 230 controls the distributed power source (for example, the power storage device 120) installed in the facility 100. Specifically, the control unit 230 formulates a control plan for the distributed power source for a target period (planned target period), and then instructs the communication unit 210 to transmit a control command according to the formulated control plan. The control command may be transmitted in a batch before the planned target period for the entire planned target period, may be sequentially transmitted for each planned unit period, or may be transmitted in real time at intervals shorter than the planned unit period.

[0056] Hereinafter, a case where the distributed power source controlled by the RA server 200 is the power storage device 120 will be exemplified.

[0057] The control unit 230 formulates a control plan (hereinafter referred to as a charge / discharge plan) for the power storage device 120 for each planned unit period (e.g., 30 minutes) that constitutes the planned target period (e.g., one day). The charge / discharge plan includes the operation mode of the power storage device 120 (e.g., discharge mode, charge mode, standby mode). The charge / discharge plan may include the discharge power and charge power of the power storage device 120. As a method for formulating the charge / discharge plan, the following options are conceivable.

[0058] In Option 1-1, the control unit 230 formulates a charge / discharge plan for the power storage device 120 based on, in addition to the profit of the facility 100, the amount of charge / discharge power for the DR requests reserved during the planned target period. For example, the control unit 230 formulates a charge / discharge plan for the power storage device 120 so as to maximize the following objective function 1 (Objective Function 1-A, 1-B) for each planned unit period.

[0059] Objective Function 1-A: "Amount of charge / discharge power for DR requests" × α + "Profit of Facility 100" Objective Function 1-B: "Profit of Facility 100" Objective Function 1-A is a function applied to the adjustment interval (hereinafter referred to as the DR reservation interval) requested by the DR request. In Objective Function 1-A, the "+" sign may mean a constraint condition regarding the DR reservation interval. The "+" sign may mean that "Profit of Facility 100" is an item that is not prioritized over "Amount of charge / discharge power for DR requests". Objective Function 1-B is a function applied during periods other than the DR reservation interval. Note that Objective Function 1-A is prioritized over Objective Function 1-B. That is, for the DR reservation interval, the "Amount of charge / discharge power for DR requests" is maximized by Objective Function 1-A, and for periods other than the DR reservation interval, the "Profit of Facility 100" is maximized by Objective Function 1-B while maintaining that Objective Function 1-A is satisfied.

[0060] The amount of charge and discharge power for a DR request may mean the degree of achieving the amount of power demand (increase or decrease) requested in the DR request. For example, the amount of charge and discharge power for a DR request may be represented by the amount of charge power of the power storage device 120 with the upper limit being the increased amount of power demand requested in the DR request, or may be represented by the amount of discharge power of the power storage device 120 with the upper limit being the decreased amount of power demand requested in the DR request.

[0061] α is a coefficient multiplied by the amount of charge and discharge power for a DR request, and may be a unit price for aligning the units with "the profit of Facility 100". α is set such that the profit obtained by maximizing the "amount of charge and discharge power for a DR request" is greater than the profit obtained by maximizing "the profit of Facility 100". α may be set for each DR request. α may also be considered as the priority of the DR request described later.

[0062] The profit of Facility 100 may include the profit obtained by suppressing the charge for the power purchased by Facility 100 from the retail electricity provider. Therefore, the profit of Facility 100 may be read as the minimization of the charge for the power purchased by Facility 100 from the retail electricity provider.

[0063] The profit of Facility 100 is specified based on, for each planned unit period constituting the planned target period, the predicted value of the power consumption of Facility 100, the predicted value of the power generation of the distributed power source (e.g., the solar cell device 110 or / and the fuel cell device 130), the predicted value of the demand power of Facility 100, the predicted value of the remaining charge amount of the power storage device 120, etc. The predicted value of the power consumption of Facility 100 may be specified based on the planned value or the actual value of the power consumption. The predicted value of the demand power of Facility 100 may be specified based on the planned value or the actual value of the demand power. The predicted value of the power generation of the solar cell device 110 may be specified based on the planned value or the actual value of the power generation, or may be specified based on information (e.g., weather information) that affects the power generation of the solar cell device 110. The predicted value of the power generation of the fuel cell device 130 may be specified based on the planned value or the actual value of the power generation, or may be specified assuming that the fuel cell device 130 outputs the rated power. The predicted value of the remaining charge amount of the power storage device 120 may be specified based on the remaining charge amount information received from Facility 100.

[0064] In Option 1-2, the control unit 230 formulates a charge / discharge plan for the power storage device 120 based on the profit of the retail electricity provider in addition to the charge / discharge power amount for the DR request reserved during the planned target period and the profit of Facility 100. For example, the control unit 230 formulates a charge / discharge plan for the power storage device 120 so as to maximize the following objective function 2 (Objective Function 2-A, 2-B) for each planned unit period.

[0065] Objective Function 2-A: “Charge / discharge power amount for DR request” × α + (”Profit of Facility 100” + ”Profit of retail electricity provider”) Objective Function 2-B: “Profit of Facility 100” + ”Profit of retail electricity provider” The objective function 2-A is a function applied to the DR reservation period. In the objective function 2-A, the sign of "+" may mean the constraint conditions regarding the DR reservation period. The sign of "+" may also mean that "the profit of Facility 100" and "the profit of the retail electricity provider" are items that are not prioritized over "the charge and discharge power amount for the DR request". The objective function 2-B is a function applied during periods other than the DR reservation period. Note that the objective function 2-A is prioritized over the objective function 2-B. That is, for the DR reservation period, the "charge and discharge power amount for the DR request" is maximized by the objective function 2-A, and for periods other than the DR reservation period, while maintaining that the objective function 2-A is satisfied, the "profit of Facility 100" and "the profit of the retail electricity provider" are maximized by the objective function 2-B.

[0066] The charge and discharge power amount for the DR request, α, and the profit of Facility 100 are the same as in Option 1-1 described above.

[0067] The profit of the retail electricity provider may include the profit per planned unit period obtained by suppressing the procurement cost of the electricity procured by the retail electricity provider from the electricity market or power generator. The profit of the retail electricity provider may include the profit obtained by increasing the price of the electricity sold by the retail electricity provider to Facility 100. The profit of the retail electricity provider may be considered as the profit obtained by subtracting the procurement cost of the electricity procured by the retail electricity provider from the electricity market or power generator from the price of the electricity sold by the retail electricity provider to Facility 100.

[0068] Note that maximizing the profit of Facility 100 does not necessarily maximize the profit of the retail electricity provider. Rather, it can be said that the profit of the retail electricity provider and the profit of Facility 100 are in a trade-off relationship.

[0069] Here, the profit of the facility 100 and the profit of the retail electricity provider may be considered as the profit obtained by charging or discharging the energy storage device 120. That is, the profit of the retail electricity provider may be the profit enjoyed by the retail electricity provider due to the charging or discharging of the energy storage device 120 (for example, the profit obtained by suppressing the power procured from the power market or the power generator or the profit obtained by increasing the price of the power sold to the facility 100) compared to the case where the energy storage device 120 does not charge or discharge. The profit of the facility 100 may be the profit enjoyed by the facility 100 due to the charging or discharging of the energy storage device 120 (for example, the profit obtained by suppressing the price of the power purchased from the retail electricity provider) compared to the case where the energy storage device 120 does not charge or discharge.

[0070] The procurement cost of the power procured by the retail electricity provider from the power market or the power generator may be specified by the procurement cost received from the AC server 300. The price of the power sold by the retail electricity provider to the facility 100 (that is, the price of the power purchased by the facility 100 from the retail electricity provider) may be specified by the price plan received from the AC server 300.

[0071] Based on the above-mentioned Option 1-1 or Option 1-2, the control unit 230 may assume a case where two or more DR requests are received for the planned period. The two or more DR requests may be DR requests including different DR reservation intervals. The DR reservation interval may be set with the planned unit period as the minimum unit. For example, the first DR request may be a request targeting 14:00 to 16:00, and the second DR request may be a DR request targeting 9:00 to 11:00.

[0072] Here, when the control unit 230 receives two or more DR requests for the planned period, it formulates a charge / discharge plan for the energy storage device 120 based on the priority of each of the two or more DR requests. The priority of each of the two or more DR requests may be considered as the above-mentioned α. As a method of determining the priority (α), the following options can be considered.

[0073] In Option 2-1, the priority of each of two or more DR requests may be set higher as the DR reservation period requested by each of the two or more DR requests is closer to the time when the charge / discharge plan of the power storage device 120 is formulated. For example, in the case of formulating the charge / discharge plan of the power storage device 120 on the day before the planned target period (for example, 10:00 on the day before the planned target period), when receiving a DR request from 9:00 to 11:00 and a DR request from 14:00 to 16:00, the priority of the DR request from 9:00 to 11:00 may be set higher than the priority of the DR request from 14:00 to 16:00.

[0074] In Option 2-2, the priority of each of two or more DR requests may be set higher as the reward for each of the two or more DR requests is higher. The reward may be given according to the degree corresponding to the DR request. The reward may be set for each planned unit period, or may be set for each DR reservation period of the DR request.

[0075] In Option 2-3, the priority of each of two or more DR requests may be set by the AC server 300 that transmits the DR request.

[0076] Two or more options selected from Options 2-1 to 2-3 may be combined.

[0077] In the embodiment, the control unit 230 constitutes a control unit that controls a distributed power source (for example, the power storage device 120) installed in the facility 100.

[0078] (AC Server) Hereinafter, the AC server according to the embodiment will be described. As shown in FIG. 4, the AC server 300 includes a communication unit 310, a management unit 320, and a control unit 330.

[0079] The communication unit 310 is composed of communication modules. The communication modules may be wireless communication modules compliant with standards such as IEEE802.11a / b / g / n / ac / ax, ZigBee, Wi-SUN, LTE, 5G, 6G, etc., or may be wired communication modules compliant with standards such as IEEE802.3.

[0080] For example, the communication unit 310 may transmit a DR request to the RA server 200. The communication unit 310 may transmit a power rate plan (rate plan) for the power sold by the retail electricity provider to the facility 100 to the RA server 200. The communication unit 310 may transmit the cost (procurement cost) of the power procured by the retail electricity provider from the power market or power generator to the RA server 200.

[0081] The management unit 320 is composed of storage media such as HDD (Hard Disk Drive), SSD (Solid State Drive), and non-volatile memory.

[0082] For example, the management unit 320 may manage information about the facility 100 where the retail electricity provider sells power. For example, the information about the facility 100 may include the type of distributed power source (solar cell device 110, energy storage device 120, or fuel cell device 130) provided in the facility 100, the specifications of the distributed power source (solar cell device 110, energy storage device 120, or fuel cell device 130) provided in the facility 100, etc. The specifications may include the rated power generation power of the solar cell device 110, the rated charging power of the energy storage device 120, the rated discharging power of the energy storage device 120, and the rated output power of the fuel cell device 130. The specifications may include the rated capacity of the energy storage device 120, the maximum charge / discharge power, etc.

[0083] The control unit 330 may include at least one processor. The at least one processor may be composed of a single integrated circuit (IC), or may be composed of a plurality of circuits (such as integrated circuits and / or discrete circuits) communicably connected.

[0084] For example, the control unit 330 may set the priority (α) for each DR request. The control unit 330 may control the communication unit 310 to transmit the priority (α) for each DR request together with the DR request.

[0085] In the embodiment, the control unit 330 may generate a DR request to be transmitted to the RA server 200 based on the specific information received from the RA server 200. For example, the control unit 330 may modify the DR request to be transmitted to the RA server 200 within a range not exceeding the DR capacity that can be handled by the RA server 200.

[0086] In addition to the specific information received from the RA server 200, the control unit 330 may generate a DR request to be transmitted to the RA server 200 based on the power supply-demand balance of the power system 12. The control unit 330 may instruct the communication unit 310 to transmit the generated DR request.

[0087] (DR request) Hereinafter, the charge-discharge plan of the energy storage device 120 according to the embodiment will be described. FIGS. 5 and 6 are diagrams for explaining the charge-discharge plan of the energy storage device 120 according to the embodiment.

[0088] First, the charge-discharge plan of the energy storage device 120 before the DR request is issued will be described. As shown in FIG. 5, since the DR request has not been issued, the RA server 200 formulates a charge-discharge plan for the energy storage device 120 using the objective function 1-B of Option 1-1 or the objective function 2-B of Option 1-2. For example, the following options are conceivable.

[0089] In the above-described Option 1-1, the RA server 200 may formulate a charge-discharge plan for the energy storage device 120 so as to maximize the profit of the facility 100. For example, the RA server 200 formulates a charge-discharge plan for the energy storage device 120 so as to maximize the objective function 1-B for each planned unit period.

[0090] In the above Option 1-2, the RA server 200 may formulate a charge / discharge plan for the power storage device 120 so as to maximize the profit of the facility 100 and the profit of the retail electricity provider. For example, the RA server 200 formulates a charge / discharge plan for the power storage device 120 so as to maximize the objective function 2-B for each planned unit period.

[0091] Second, the charge / discharge plan of the power storage device 120 after the DR request is issued will be described. As shown in FIG. 6, since the DR request is issued, the RA server 200 may formulate a charge / discharge plan for the power storage device 120 so as to maximize the charge / discharge power amount for the DR request.

[0092] In the above Option 1-1, the RA server 200 may formulate a charge / discharge plan for the power storage device 120 so as to maximize the profit of the facility 100 while maximizing the charge / discharge power amount for the DR request. For example, the RA server 200 formulates a charge / discharge plan for the power storage device 120 so as to maximize the objective function 1-A and the objective function 1-B for each planned unit period.

[0093] In the above Option 1-2, the RA server 200 may formulate a charge / discharge plan for the power storage device 120 so as to maximize the profit of the facility 100 and the profit of the retail electricity provider while maximizing the charge / discharge power amount for the DR request. For example, the RA server 200 formulates a charge / discharge plan for the power storage device 120 so as to maximize the objective function 2-A and the objective function 2-B for each planned unit period.

[0094] Furthermore, when the RA server 200 receives two or more DR requests for the planned period, the RA server 200 formulates a charge / discharge plan for the power storage device 120 based on the priority of each of the two or more DR requests.

[0095] (Specific information) Hereinafter, the specific information (DR available amount) according to the embodiment will be described. FIGS. 7 to 11 are diagrams for explaining the DR available amount according to the embodiment. In FIGS. 7 to 11, the vertical axis represents the remaining charge amount of the power storage, and the horizontal axis represents time. The remaining charge amount of the power storage may be represented by SOC (%).

[0096] In Option 1, a case will be described where, starting from the state of receiving DR request #1 (downward DR request) for DR reservation interval #1 (see FIG. 7), it transitions to the state of receiving DR request #2 (downward DR request) for DR reservation interval #2 (see FIG. 8).

[0097] As shown in FIG. 7, when the RA server 200 receives DR request #1 for DR reservation interval #1, it formulates a charge / discharge plan for the power storage device 120. The upper limit of the SOC per planned unit time may be 100%. The lower limit of the SOC per planned unit time may be a value that can correspond to DR request #1 in the DR reservation interval. The charge / discharge plan of the power storage device 120 is formulated such that the SOC is between the upper limit and the lower limit of the SOC. Although not particularly limited, the charge / discharge plan of the power storage device 120 is formulated based on the deviation of the prediction error of the demand power of the facility 100 such that the SOC is between the upper limit and the lower limit of the SOC. For example, the charge / discharge plan of the power storage device 120 may be formulated such that the SOC is the average of the upper limit and the lower limit of the SOC.

[0098] In such a case, the difference between the charge / discharge plan of the power storage device 120 and the lower limit of the SOC is the downward DR available amount. The difference between the charge / discharge plan of the power storage device 120 and the upper limit of the SOC is the upward DR available amount.

[0099] The RA server 200 transmits specific information indicating the DR available amount (downward DR available amount and upward DR available amount) per planned unit time to the AC server 300 in preparation for DR request #2.

[0100] Under such a premise, when the AC server 300 transmits DR request #2 based on the specific information, as shown in FIG. 8, the RA server 200 can respond to DR request #2 in DR reservation interval #2 without changing the charge / discharge plan of the power storage device 120.

[0101] Although not particularly limited, FIG. 8 illustrates a case where the amount of available down-regulation DR becomes zero after the start of DR reservation period #2.

[0102] The RA server 200 may transmit specific information indicating the amount of available DR (the amount of available down-regulation DR and the amount of available up-regulation DR) per planned unit time to the AC server 300 in preparation for the next DR request.

[0103] In Option 2, a case will be described where, starting from the state where a DR request #1 (down-regulation DR request) for DR reservation period #1 is received (see FIG. 9), a transition is made to the state where a DR request #2 (up-regulation DR request) for DR reservation period #1 is received (see FIG. 10). That is, a case will be described where, for DR reservation period #1, the amount of regulated power requested in the DR request is changed from DR request #1 to DR request #2.

[0104] As shown in FIG. 9, when the RA server 200 receives a DR request #1 for DR reservation period #1, it formulates a charge / discharge plan for the energy storage device 120. The upper limit of the SOC per planned unit time may be 100%, or may be determined assuming an operation of charging the energy storage device 120 during a time period when the unit price of the power purchased from the power grid 12 is low (for example, at night). The lower limit of the SOC per planned unit time may be a value that can respond to DR request #1 in the DR reservation period. The charge / discharge plan for the energy storage device 120 is formulated such that the SOC is between the upper limit and the lower limit of the SOC. Although not particularly limited, the charge / discharge plan for the energy storage device 120 is formulated such that the SOC is between the upper limit and the lower limit of the SOC based on the deviation of the prediction error of the demand power of the facility 100. For example, the charge / discharge plan for the energy storage device 120 may be formulated such that the SOC is the average of the upper limit and the lower limit of the SOC.

[0105] In such a case, the difference between the charge / discharge plan of the energy storage device 120 and the lower limit of the SOC is the amount of available down-regulation DR. The difference between the charge / discharge plan of the energy storage device 120 and the upper limit of the SOC is the amount of available up-regulation DR.

[0106] In preparation for DR request #2, the RA server 200 transmits specific information indicating the DR achievable amount (downward DR achievable amount and upward DR achievable amount) per planned unit time to the AC server 300.

[0107] Under such a premise, when the AC server 300 transmits DR request #2 based on the specific information, as shown in FIG. 10, the RA server 200 can respond to DR request #2 in DR reservation period #1 without changing the charge / discharge plan of the energy storage device 120.

[0108] Although not particularly limited, FIG. 10 illustrates a case where the upward DR achievable capacity becomes zero after the end of DR reservation period #1.

[0109] In preparation for the next DR request, the RA server 200 may transmit specific information indicating the DR achievable amount (downward DR achievable amount and upward DR achievable amount) per planned unit time to the AC server 300.

[0110] Option 3 will describe the case where the upper limit of the SOC is set to a value smaller than 100% (hereinafter referred to as the upper limit setting value), and the lower limit of the SOC is set to a value larger than 0% (hereinafter referred to as the lower limit setting value).

[0111] As shown in FIG. 11, the upper limit of the SOC per planned unit time is determined so as not to exceed the upper limit setting value. The upper limit of the SOC per planned unit time may be the same as the upper limit setting value, or may be determined assuming an operation of charging the energy storage device 120 during a time period when the unit price of the power purchased from the power grid 12 is low (for example, at night). The upper limit setting value may be arbitrarily set by the RA server 200 or the facility 100.

[0112] As shown in FIG. 11, the lower limit of the SOC for each planned unit time is determined so as not to fall below the lower limit set value. The lower limit of the SOC for each planned unit time may be the same as the lower limit set value, or may be a value that can respond to DR request #1 in the DR reservation period. The lower limit set value may be arbitrarily set by the RA server 200 or the facility 100. The lower limit set value may be set in consideration of the BCP (Business Continuity Plan).

[0113] In Option 3, the method for formulating the charge / discharge plan of the energy storage device 120 may be the same as that in Option 1 or Option 2.

[0114] (Power control method) Hereinafter, the power control method according to the embodiment will be described.

[0115] The sequence among the AC server 300, the RA server 200, and the facility 100 will be described.

[0116] As shown in FIG. 12, in step S11, the AC server 300 transmits a power charge plan (charge plan) sold by the retail electricity provider to the facility 100 to the RA server 200.

[0117] In step S12, the AC server 300 transmits the cost of the power procured by the retail electricity provider from the power market or the power generator (procurement cost) to the RA server 200.

[0118] In step S20, the RA server 200 formulates a charge / discharge plan for the energy storage device 120 for each planned unit period constituting the planned target period. Specifically, when the RA server 200 receives two or more DR requests for the planned target period, the RA server 200 formulates a charge / discharge plan for the energy storage device 120 using the objective function 1 of Option 1-1 or the objective function 2 of Option 1-2.

[0119] In an embodiment, when the RA server 200 receives two or more DR requests for a planning target period, it formulates a charge / discharge plan for the power storage device 120 based on the priority (α) of each of the two or more DR requests.

[0120] In step S21A, the RA server 200 transmits specific information indicating the DR available amount to the AC server 300. The RA server 200 may transmit the specific information in response to a request from the AC server 300, or may autonomously transmit the specific information. The DR available amount in step S21A may be calculated based on the charge / discharge plan for the power storage device 120 formulated in step S20.

[0121] In step S22A, the AC server 300 generates a DR request based on the specific information received in step S21A and transmits the DR request for the planning target period.

[0122] Here, the RA server 200 may formulate (revise) the charge / discharge plan for the power storage device 120 formulated in step S20 based on the DR request received in step S22A. Specifically, in order to achieve the DR request received in step S22A, the charge / discharge plan for the power storage device 120 may be formulated (revised) using the objective function 1 of Option 1-1 or the objective function 2 of Option 1-2.

[0123] In step S21B, the RA server 200 transmits specific information indicating the DR available amount to the AC server 300. The RA server 200 may transmit the specific information in response to a request from the AC server 300, or may autonomously transmit the specific information. The DR available amount in step S21B may be calculated based on the charge / discharge plan for the power storage device 120 formulated (revised) based on the DR request received in step S22A.

[0124] In step S22B, the AC server 300 generates a DR request based on the specific information received in step S21B and transmits the DR request for the planning target period.

[0125] Here, the RA server 200 may further formulate (modify) the charge and discharge plan of the power storage device 120 formulated (modified) based on the DR request received in step S22A based on the DR request received in step S22B. Specifically, in order to achieve the DR request received in step S22B, the charge and discharge plan of the power storage device 120 may be formulated (modified) using the objective function 1 of Option 1-1 or the objective function 2 of Option 1-2.

[0126] In step S32, the RA server 200 transmits a control command to the facility 100 according to the charge and discharge plan formulated in step S31. The control command may be transmitted in a batch before the planned target period for the entire planned target period, may be sequentially transmitted for each planned unit period, or may be transmitted in real time at intervals shorter than the planned unit period.

[0127] In step S33, the facility 100 transmits the control result of the power storage device 120 to the RA server 200 based on the charge and discharge plan. The control result of the power storage device 120 may include the discharge power amount of the power storage device 120 per planned unit time and the charge power amount of the power storage device 120 per planned unit time. The control result of the power storage device 120 may include the required power amount of the facility 100 per planned unit time.

[0128] In step S34, the RA server 200 transmits a report including the control result received in step S33 to the AC server 300.

[0129] In FIG. 12, a case where two DR requests are transmitted from the AC server 300 to the RA server 200 is illustrated. However, the embodiment is not limited thereto. For example, three or more DR requests may be transmitted from the AC server 300 to the RA server 200. In such a case, the operations of step S21B and step S22B are further repeated.

[0130] (Function and Effect) In the embodiment, the RA server 200 assumes receiving two or more DR requests for the planned period and transmits specific information for specifying the DR available amount (the up-DR available amount and the down-DR available amount) for each of the two or more DR requests. According to such a configuration, it can be expected that the DR request is transmitted based on the DR available amount, and while reducing the complexity of changing the charge-discharge plan of the power storage device 120, it is possible to appropriately respond to two or more DR requests.

[0131] In the embodiment, when the RA server 200 receives two or more DR requests for the planned period, the RA server 200 formulates a charge-discharge plan for the power storage device 120 based on the priority (α) of each of the two or more DR requests. According to such a configuration, since the priority (α) of each of the two or more DR requests is considered in formulating the charge-discharge plan of the power storage device 120, it is possible to appropriately respond to two or more DR requests.

[0132] In the embodiment, by imposing a constraint condition regarding the DR reservation period, maximizing the charge-discharge power amount for the DR request is prioritized. Specifically, in Option 1-1, maximizing the charge-discharge power amount for the DR request is prioritized over maximizing the profit of Facility 100. In Option 1-2, maximizing the charge-discharge power amount for the DR request is prioritized over maximizing the profit of Facility 100 and the profit of the retail electricity business operator. According to such a configuration, it is possible to appropriately respond to the DR request.

[0133] [Modification Example 1] Hereinafter, Modification Example 1 of the embodiment will be described. Hereinafter, the differences from the above-described embodiment will be mainly described.

[0134] In Modification Example 1, when there is a DR request that cannot be handled by the RA server 200 among two or more DR requests, the RA server 200 transmits to the server that transmits the DR request (that is, the AC server 300) that there is a DR request that cannot be handled by the RA server 200.

[0135] A situation where the RA server 200 cannot respond to a DR request may be considered as a situation where the facility 100 managed by the RA server 200 as a whole cannot generate the adjustment power requested by the DR request. A situation where the adjustment power requested by the DR request cannot be generated may be determined based on the dischargeable amount or storable amount of the energy storage device 120 possessed by the facility 100 managed by the RA server 200. The dischargeable amount of the energy storage device 120 may be regarded as the remaining stored amount of the energy storage device 120. The chargeable amount of the energy storage device 120 may be regarded as the available capacity of the energy storage device 120.

[0136] The fact that there is a DR request that the RA server 200 cannot handle may include information indicating the amount of power that can be adjusted by the RA server 200 (hereinafter referred to as the adjustable power amount) with respect to the adjustment power requested by the DR request. The adjustable power amount may be the amount of power that can be reduced for a downward DR request (i.e., the dischargeable amount), or the amount of power that can be increased for an upward DR request (i.e., the chargeable amount).

[0137] The fact that there is a DR request that the RA server 200 cannot handle may include information indicating the insufficient power amount with respect to the adjustment power requested by the DR request. The insufficient power amount may be part of the reduction power amount requested by a downward DR request, or part of the increase power amount requested by an upward DR request.

[0138] [Modification Example 2] Hereinafter, Modification Example 2 of the embodiment will be described. Hereinafter, the differences from the above-described embodiment will be mainly described.

[0139] In Modification Example 2, Option 1-2 described above will be explained. Specifically, the adjustment of the profit of the facility 100 and the profit of the retail electricity business operator will be explained.

[0140] The RA server 200 formulates a charge / discharge plan for the energy storage device 120 based on adjustment information for adjusting the profits of the facility 100 and the retail electricity provider. The adjustment information may be set by the AC server 300 and transmitted from the AC server 300 to the RA server 200. The following options can be considered as adjustment information.

[0141] In Option 1, the adjustment information may include information indicating which of the profits of the facility 100 and the retail electricity provider is to be prioritized. Such information may be represented in the form of a flag and may be referred to as a priority flag.

[0142] For example, when "0" is set as the priority flag, it may mean that the profit of the facility 100 is prioritized over the profit of the retail electricity provider. The ratio by which the profit of the facility 100 is prioritized over the profit of the retail electricity provider may be predetermined. A priority flag with "0" set may mean maximizing the profit of the facility 100. In such a case, the profit of the retail electricity provider may be maximized under the constraint that the profit of the facility 100 does not decrease.

[0143] For example, when "1" is set as the priority flag, it may mean that the profit of the retail electricity provider is prioritized over the profit of the facility 100. The ratio by which the profit of the retail electricity provider is prioritized over the profit of the facility 100 may be predetermined. A priority flag with "1" set may mean maximizing the profit of the retail electricity provider. In such a case, the profit of the facility 100 may be maximized under the constraint that the profit of the retail electricity provider does not decrease.

[0144] In Modification Example 2, although the priority flag that can take two types of values has been exemplified, the priority flag may be a flag that can take three or more types of values. For example, a priority flag set to "00" means that the profit of Facility 100 is prioritized over the profit of the retail electricity business operator (facility priority type), a priority flag set to "01" means that the profit of the retail electricity business operator is prioritized over the profit of Facility 100 (retail priority type), and a priority flag set to "10" may mean that the profit of the retail electricity business operator and the profit of Facility 100 are treated equally (balanced type).

[0145] In Option 2, the adjustment information may include information indicating the ratio between the profit of Facility 100 and the profit of the retail electricity business operator. Such information may be referred to as a priority ratio.

[0146] For example, when assuming a case where the profit obtained by charging or discharging the energy storage device 120 is represented by the sum of the profit of Facility 100 × β and the profit of the retail electricity business operator × (1 - β), the priority ratio may be represented by β or 1 - β. The possible values of β may be values included in the range of 0 ≤ β ≤ 1. β may take a value smaller than 0 or a value larger than 1.

[0147] For example, when β is 1, β may mean maximizing the profit of Facility 100. In such a case, the profit of the retail electricity business operator may be maximized under the constraint that the profit of Facility 100 does not decrease.

[0148] For example, when β is 0, β may mean maximizing the profit of the retail electricity business operator. In such a case, the profit of Facility 100 may be maximized under the constraint that the profit of the retail electricity business operator does not decrease.

[0149] For example, when β is 0.5, β may mean treating the profit of the retail electricity business operator and the profit of Facility 100 equally.

[0150] [Other Embodiments] Although the present invention has been described by the above-described embodiments, the discussions and drawings that form part of this disclosure should not be understood as limiting the invention. Various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art from this disclosure.

[0151] In the above-described disclosure, the DR requests after the second time may be DR requests for DR reservation intervals different from the already transmitted DR requests, or may be DR requests for modifying the already transmitted DR requests.

[0152] In the above-described disclosure, a case where specific information for a DR request is transmitted before receiving the DR request has been exemplified. However, the above-described disclosure is not limited thereto. The specific information for the DR request may be transmitted after receiving the DR request. For example, the RA server 200 may transmit the specific information for the DR request #1 after receiving the DR request #1, and the AC server 300 may modify the DR request #1 based on the specific information for the DR request #1.

[0153] Although not particularly mentioned in the above-described disclosure, the DR available amount may be the sum of the DR available amounts of each of the facilities 100 managed by the RA server 200.

[0154] In the above-described disclosure, a case where the distributed power source controlled by the RA server 200 is the energy storage device 120 has been exemplified. However, the above-described disclosure is not limited thereto. The distributed power source controlled by the RA server 200 may be a fuel cell device 130 or a diesel generator.

[0155] In the above-described disclosure, a case where the RA server 200 and the AC server 300 are separate servers has been described. However, the above-described disclosure is not limited thereto. The RA server 200 and the AC server 300 may be one server. In such a case, the function corresponding to the RA server 200 may be referred to as a VPP function, and the function corresponding to the AC server 300 may be referred to as a retail function.

[0156] Although not particularly mentioned in the above disclosure, a program may be provided to cause a computer to execute each process performed by the RA server 200. Further, the program may be recorded on a computer-readable medium. By using a computer-readable medium, it is possible to install the program on a computer. Here, the computer-readable medium on which the program is recorded may be a non-transitory recording medium. The non-transitory recording medium is not particularly limited, and may be, for example, a recording medium such as a CD-ROM or a DVD-ROM.

[0157] Alternatively, a chip may be provided that includes a memory for storing a program for executing each process performed by the RA server 200 and a processor for executing the program stored in the memory.

[0158] [Appendix] The above disclosure may be expressed as follows.

[0159] A first feature is a power control device including a receiving unit that receives an adjustment request for requesting supply-demand adjustment of a power system, a control unit that controls a distributed power source installed in a facility, and a transmitting unit that transmits specific information for specifying an adjustable amount for each of the two or more adjustment requests assuming reception of two or more adjustment requests for a target period as the adjustment request.

[0160] A second feature is that, in the first feature, the distributed power source is a power storage device, and the specific information includes one or more pieces of information selected from information indicating a remaining charge amount of the power storage device, information indicating a dischargeable power amount of the power storage device, information indicating a chargeable power amount of the power storage device, information indicating a dischargeable power of the power storage device, information indicating a chargeable power of the power storage device, information indicating a storage capacity of the power storage device, information indicating a minimum value of the remaining charge amount of the power storage device in the target period, information indicating a maximum value of the remaining charge amount of the power storage device in the target period, and information indicating a power amount corresponding to the adjustment request.

[0161] The third feature is that in the first feature or the second feature, when there is an adjustment request among the two or more adjustment requests that cannot be handled by the power control device, the transmission unit transmits a notice indicating that there is an adjustment request that cannot be handled by the power control device to the server that transmits the adjustment request. It is a power control device.

[0162] The fourth feature is that in at least any one of the first to third features, the control unit is a power control device that formulates a control plan for the distributed power source based on the profit of a specific business operator selling power to the facility and the profit of the facility.

[0163] The fifth feature is a power control method including: step A of receiving an adjustment request for requesting supply-demand adjustment of a power system; step B of controlling a distributed power source installed in a facility; and step C of transmitting specific information for specifying an adjustable amount for each of the two or more adjustment requests, assuming reception of the two or more adjustment requests for a target period as the adjustment request.

Description of Reference Numerals

[0164] 1... Power control system, 11... Network, 12... Power system, 100... Facility, 110... Solar cell device, 120... Energy storage device, 130... Fuel cell device, 140... Load equipment, 160... EMS, 190... Measuring device, 200... RA server, 210... Communication unit, 220... Management unit, 230... Control unit, 300... AC server, 310... Communication unit, 320... Management unit, 330... Control unit

Claims

1. a receiving unit that receives an adjustment request for requesting supply-demand adjustment of a power system; a control unit that controls a distributed power source installed in a facility; a transmission unit that transmits specific information for specifying an adjustable amount for each of the two or more adjustment requests, assuming reception of the two or more adjustment requests for a target period as the adjustment request; a power control device comprising.

2. The distributed power source is a power storage device, The specific information includes information indicating the remaining charge amount of the power storage device, information indicating the dischargeable power amount of the power storage device, information indicating the chargeable power amount of the power storage device, information indicating the dischargeable power of the power storage device, Information indicating the chargeable power of the power storage device, information indicating the storage capacity of the power storage device, information indicating the minimum value of the remaining charge amount of the power storage device during the target period, and the remaining charge amount of the power storage device during the target period The power control device according to claim 1, comprising one or more pieces of information selected from information indicating the maximum value and information indicating the amount of power that can be responded to the adjustment request.

3. When there is an adjustment request that cannot be handled by the power control device among the two or more adjustment requests, the server that transmits the adjustment request is notified that there is an adjustment request that cannot be handled by the power control device. The power control device according to claim 1.

4. The control unit formulates a control plan for the distributed power source based on the profit of a specific business operator that sells power to the facility and the profit of the facility. The power control device according to claim 1.

5. Step A of receiving an adjustment request for requesting supply-demand adjustment of a power system; Step B of controlling a distributed power source installed in a facility; Step C of transmitting specific information for specifying an adjustable amount for each of the two or more adjustment requests, assuming reception of the two or more adjustment requests for a target period as the adjustment request; a power control method comprising.

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