Power supply control device and power supply control method

Abstract

To provide a power supply control device and a power supply control method capable of appropriately controlling a distributed power supply according to a DR request.SOLUTION: A power supply control device includes: a reception part configured to receive an adjustment request for requesting power supply and demand adjustment of a power system; and a control part configured to control a distributed power supply installed in a facility according to the adjustment request. The control part allocates a value related to the adjusted power requested by the adjustment request to a first facility having both a first possible value capable of adjusting an output power and a second possible value capable of adjusting a demand power, and after allocating the value related to the adjusted power to the first facility, allocates a value related to a remaining power of the value related to the adjusted power to a second facility having any one of the first possible value and the second possible value. The control part controls the distributed power supply installed in the first facility and the second facility based on the value related to the adjusted power allocated to the first facility and the second facility.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a power supply control device and a power supply control method. [Background technology]

[0002] In recent years, a system using distributed power sources such as power storage devices (hereinafter referred to as VPP (Virtual Power Plant)) has been attracting attention in order to stabilize the balance of power supply and demand in a power grid (for example, Patent Documents 1 and 2).

[0003] Here, a power management device that manages two or more facilities (hereinafter referred to as a facility group) may control the distributed power sources installed in the facilities so that the difference (imbalance) between the planned value for the facility group's power demand (hereinafter referred to as procured power) and the actual value for the facility group's procured power is less than a specified difference.

[0004] Similarly, a power management device that manages two or more facilities may control the distributed power sources installed in the facilities so that the difference (imbalance) between the planned value for the power generation of the facility group and the actual value for the power generation of the facility group is less than a predetermined difference.

[0005] In a VPP, an adjustment request (hereinafter referred to as a DR request) to reduce forward flow power or generated power is expected. For example, a power supply control device that controls distributed power sources on behalf of a power management device controls the distributed power sources installed in a facility in response to the DR request received from the power management device. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] International Publication No. 2015 / 041010 Brochure [Patent Document 2] International Publication No. 2016 / 084396 Brochure Summary of the Invention [Problem to be solved by the invention]

[0007] In cases where a power control device controls distributed power sources instead of a power management device, in order to ensure the value related to the regulated power requested in the DR request, it is necessary for the power control device to appropriately distribute the value related to the regulated power requested in the DR request to each facility.

[0008] Therefore, the present disclosure has been made to solve the above-mentioned problems, and aims to provide a power supply control device and a power supply control method that enable appropriate control of distributed power sources in response to DR requests. [Means for solving the problem]

[0009] An aspect of the disclosure is a power supply control device that includes a receiving unit that receives an adjustment request requesting adjustment of power supply and demand in a power grid, and a control unit that controls distributed power sources installed in facilities in response to the adjustment request, wherein the control unit assigns a value related to adjustment power requested by the adjustment request to a first facility that has both a first possible value for adjusting output power and a second possible value for adjusting demand power, and after assigning the value related to adjustment power to the first facility, assigns a value related to remaining power of the value related to adjustment power to a second facility that has either the first possible value or the second possible value, and controls the distributed power sources installed in the first facility and the second facility based on the values ​​related to adjustment power assigned to the first facility and the second facility.

[0010] An aspect of the disclosure is a power supply control method comprising: a step A of receiving an adjustment request requesting adjustment of power supply and demand in a power grid; and a step B of controlling distributed power sources installed in facilities in response to the adjustment request, wherein step A includes the steps of assigning a value related to adjustment power requested by the adjustment request to a first facility having both a first possible value for adjusting output power and a second possible value for adjusting demand power; after assigning the value related to adjustment power to the first facility, assigning a value related to remaining power of the value related to adjustment power to a second facility having either the first possible value or the second possible value; and controlling the distributed power sources installed in the first facility and the second facility based on the values ​​related to adjustment power assigned to the first facility and the second facility. [Effects of the Invention]

[0011] According to the present disclosure, it is possible to provide a power supply control device and a power supply control method that enable appropriate control of distributed power sources in response to a DR request. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram showing a power supply control system 1 according to an embodiment. [Figure 2] FIG. 2 is a diagram showing a facility 100 according to the embodiment. [Figure 3] FIG. 3 is a diagram showing the RA server 200 according to the embodiment. [Figure 4] FIG. 4 is a diagram showing the AC server 300 according to the embodiment. [Figure 5] FIG. 5 is a diagram illustrating allocation of values ​​related to output adjustment power and values ​​related to demand adjustment power according to the embodiment. [Figure 6] FIG. 6 is a diagram illustrating a power supply control method according to the embodiment. [Figure 7] FIG. 7 is a diagram illustrating a power supply control method according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments 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.

[0014] [Embodiment] (Power supply control system) A power supply control system according to an embodiment will be described below. 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.

[0015] Here, the facility 100, the RA server 200, and the AC server 300 are configured to be able to communicate with each other via a network 11. The network 11 may include the Internet, a dedicated line such as a VPN (Virtual Private Network), or a mobile communication network.

[0016] The facility 100 is connected to the power grid 12 and may receive power from the power grid 12 or may supply power to the power grid 12. Power from the power grid 12 to the facility 100 may be referred to as forward flow power. Power from the facility 100 to the power grid 12 may be referred to as reverse flow power. In FIG. 1 , facilities 100A to 100C are illustrated as examples of the facility 100.

[0017] 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 also be an apartment building including two or more residences. Facility 100 may also be a complex including at least two or more of the following facilities: a residence, a store, and an office. Details of facility 100 will be described later (see FIG. 2).

[0018] The RA server 200 is a server managed by a business operator (e.g., a VPP (Virtual Power Plant) business operator) that controls distributed power sources (e.g., the power storage device 120 described later) installed in the facility 100. The RA server 200 may be interpreted as a VPP business operator. The RA server 200 may also be referred to as a first server or a subordinate server. Details of the RA server 200 will be described later (see FIG. 3).

[0019] Although not particularly limited, the RA server 200 may include a distribution function unit 200A and a DSR-MS (Demand Side Resource-energy-Management System) 200B.

[0020] The distribution function unit 200A may have a function of distributing a value related to demand adjustment power and a value related to output adjustment power from an adjustment request received from the AC server 300. The value related to demand adjustment power is a command value indicating the amount of adjustment of demand power of the facility 100 in which a distributed power source controlled by the RA server 200 (e.g., DSR-MS200B) is installed. The value related to output adjustment power is a command value indicating the amount of adjustment of output power of the facility 100 in which a distributed power source controlled by the RA server 200 (e.g., DSR-MS200B) is installed. The DSR-MS200B is a controller that controls the distributed power source installed in the facility 100.

[0021] In the embodiment, a case will be exemplified in which the power control device that controls the distributed power sources installed in the facility 100 in place of the power management device (AC server 300) is the DSR-MS 200B. However, the power control device may also be the RA server 200 (i.e., the distribution function unit 200A and the DSR-MS 200B).

[0022] The AC server 300 is a server managed by a business operator (e.g., a retail electricity supplier) that sells electricity to the facility 100. The AC server 300 may be an example of a power management device. The retail electricity supplier may procure electricity from an electricity market or a power generation company and sell the procured electricity to the facility 100. The AC server 300 may be read as a retail electricity supplier. The AC server 300 may be referred to as a second server or an upper server. Details of the AC server 300 will be described later (see FIG. 4).

[0023] Although not particularly limited, the electricity market may be a market in which electricity is traded for a target period (e.g., one day from 0:00 to 24:00). The electricity market may be a market in which electricity rates are determined for each unit period (e.g., 30 minutes) that constitutes the target period. The electricity market may include a spot market in which trading closes the day before the target period (e.g., 10:00 the day before the target period). The electricity market may also include an advance market in which trading closes just before (e.g., one hour before) the unit period that constitutes the target period. The electricity market may include a forward market, a forward electricity market, a futures market, a capacity market, or an adjustment market in which electricity is traded for a specific future period (e.g., one year, one month, one week).

[0024] Although not particularly limited, power generation companies may include companies that trade electricity in the electricity market, and may also include companies that trade electricity directly with retail electricity companies.

[0025] The AC server 300 may transmit an adjustment request requesting adjustment of power supply and demand in the power grid 12. The adjustment request may be referred to as a DR (Demand Response) request. The DR request may include an upward DR request requesting an increase in the power demand of the facility 100 from a reference value, or may include a downward DR request requesting a decrease in the power demand of the facility 100 from a reference value.

[0026] The reference value is the power demand of the facility 100 before the DR request. The reference value is a value that reflects the power consumption of the facility 100 (power consumption of the load devices 140), as well as the power generated by power generation devices (e.g., the solar cell device 110 and the fuel cell device 130) and the charging power and discharging power of the power storage device 120. The reference value may be considered as a baseline power. The baseline power may be an average value of the power demand for a certain period before the issuance of the DR request is announced. The certain period may be determined according to the actual situation of the negawatt trading, or may be determined between the RA server 200 and the AC server 300. The baseline power may be calculated based on a predicted value of the power demand of the facility 100, a predicted value of the power generation of the facility 100, or both the power demand and the power generation.

[0027] When the power demand of the facility 100 is increased or decreased in response to the DR request, a reward may be given according to the degree to which the DR request was complied with. The reward may be given to the AC server 300 or the facility 100. When the power demand of the facility 100 is not increased or decreased in response to the DR request, a penalty may be imposed according to the degree to which the DR request was not complied with. The penalty may be imposed on the AC server 300 or the facility 100. The penalty may be imposed only on the facility 100 that responded that it would comply with the DR request. The reward and penalty may be monetary.

[0028] (facility) A facility according to an embodiment will be described below. As shown in Fig. 2, the facility 100 includes a solar cell 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 also include a measuring device 190.

[0029] The solar cell device 110 is a distributed power source that generates electricity in response to light such as sunlight. For example, the solar cell device 110 is configured by a PCS (Power Conditioning System) and a solar panel. Here, installation may mean connecting the solar cell device 110 to the power grid 12.

[0030] The power storage device 120 is a distributed power source that charges and discharges power. For example, the power storage device 120 is configured by a PCS and a power storage cell. Here, "installed" may mean that the power storage device 120 is connected to the power grid 12.

[0031] 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, "installed" may mean that the fuel cell device 130 and the power grid 12 are connected.

[0032] For example, the fuel cell device 130 may be a solid oxide fuel cell (SOFC; Solid Oxide Fuel Cell), a polymer electrolyte fuel cell (PEFC; Polymer Electrolyte Fuel Cell), a phosphoric acid fuel cell (PAFC; Phosphoric Acid Fuel Cell), or a molten carbonate fuel cell (MCFC; Molten Carbonate Fuel Cell).

[0033] The load devices 140 are devices that consume power. For example, the load devices 140 may include air conditioners, heat pump water heaters, lighting devices, and the like.

[0034] 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 devices 140. In the embodiment, the EMS 160 is illustrated as an example of a device that receives control commands from the RA server 200, but such a device may also be referred to as a gateway or simply as a control unit. The control command may be an instruction or command to control a distributed power source (e.g., the power storage device 120). To distinguish the EMS 160 from the RA server 200, the EMS 160 may also be referred to as a local EMS (LES), a home EMS (HEMS), or a DSR-MS.

[0035] The measuring device 190 measures forward flow power (hereinafter also referred to as demand power) from the power grid 12 to the facility 100. The measuring device 190 may measure reverse flow power from the facility 100 to the power grid 12. For example, the measuring device 190 may be a smart meter belonging to a power company. The measuring device 190 may transmit an information element indicating a measurement result (an integrated value of forward flow power or reverse flow power) at a first interval (e.g., 30 minutes) to the EMS 160 at the first interval. The measuring device 190 may transmit an information element indicating a measurement result at a second interval (e.g., 1 minute) shorter than the first interval to the EMS 160.

[0036] (RA server) The RA server according to the embodiment will be described below. As shown in Fig. 3, the RA server 200 has a communication unit 210, a management unit 220, and a control unit 230. The operation of the DSR-MS 200B will be mainly described below.

[0037] The communication unit 210 is configured by a communication module. The communication module may be a wireless communication module conforming to standards such as IEEE802.11a / b / g / n / ac / ax, ZigBee, Wi-SUN, LTE, 5G, or 6G, or may be a wired communication module conforming to standards such as IEEE802.3.

[0038] First, the communication unit 210 may receive a DR request requesting adjustment of power supply and demand in the power grid 12. As described above, the DR request may include a downward DR requesting a decrease in the power demand of the facility 100, or an upward DR requesting an increase in the power demand of the facility 100.

[0039] Second, the communication unit 210 may receive facility information about the facility 100. The facility information may include information indicating the configuration of the distributed power sources that the facility 100 has, or may include information indicating the specifications of the distributed power sources that the facility 100 has.

[0040] Furthermore, the facility information may include the following information. Since the information below changes from moment to moment, the communication unit 210 may receive the facility information including the information below periodically, or may receive it in response to a request from the RA server 200.

[0041] For example, the communication unit 210 may receive a planned value for the power consumption of the facility 100, or may receive an actual value for the power consumption of the facility 100. The communication unit 210 may receive a planned value for the power generated by a distributed power source installed in the facility 100, or may receive an actual value for the power generated by the distributed power source installed in the facility 100. The communication unit 210 may receive a planned value for the power demand of the facility 100, or may receive an actual value for the power demand of the facility 100. Note that when the power consumption is expressed as a value greater than or equal to 0 and the power generation is expressed as a value less than or equal to 0, the power demand is a value expressed as the sum of the power consumption and the power generation. Therefore, when the absolute value of the power generation is greater than the absolute value of the power consumption, the power demand can take a negative value. When the distributed power source is a power storage device 120, the communication unit 210 may receive information indicating the remaining amount of power stored in the power storage device 120 (e.g., SOC; State Of Charge) (hereinafter referred to as remaining power storage information).

[0042] For example, the facility information may include information for identifying a reference value to be referenced in the DR request. The information for identifying the reference value may include information indicating an actual value of the power demand of the facility 100. The information for identifying the reference value may include information indicating an actual value of the power generation of the facility 100. The information for identifying the reference value may include information indicating an actual value of the power consumption of the facility 100.

[0043] For example, the facility information may include information indicating the amount of power that can be adjusted in response to a DR request (hereinafter referred to as the adjustable power amount). The facility information may include information indicating the adjustable power amount for each unit period (e.g., 30 minutes) that constitutes the target period. The adjustable power amount for each unit period may include information indicating a first possible value by which the output power can be adjusted, and may include information indicating a second possible value by which the demand power can be adjusted. For example, the facility information may include a power generation plan for the facility 100, and the first possible value may be identified from the power generation plan for the facility 100. The facility information may include a demand plan for the facility 100, and the second possible value may be identified from the demand plan for the facility 100.

[0044] Third, the communication unit 210 may transmit to the facility 100 a control command for controlling the distributed power source installed in the facility 100. The distributed power source controlled by the control command, i.e., the distributed power source controlled by the RA server 200, may be a power storage device.

[0045] In the embodiment, the communication unit 210 constitutes a receiving unit that receives an adjustment request (DR request) requesting adjustment of power supply and demand in the power grid 12.

[0046] The management unit 220 is configured by a storage medium such as a hard disk drive (HDD), a solid state drive (SSD), or a nonvolatile memory.

[0047] For example, the management unit 220 may manage information about the facility 100 that has a distributed power source controlled by the RA server 200. For example, the information about 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) installed in the facility 100, the specifications of the distributed power source (solar cell device 110, power storage device 120, or fuel cell device 130) installed in the facility 100, etc. The specifications may include the rated power generation 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 charging and discharging power, etc.

[0048] The control unit 230 may include at least one processor. The at least one processor may be configured by a single integrated circuit (IC), or may be configured by multiple circuits (such as integrated circuits and / or discrete circuits) that are communicatively connected.

[0049] The control unit 230 controls the distributed power sources (for example, the power storage devices 120) installed in the facility 100. In detail, the control unit 230 formulates a control plan for the distributed power sources for a target period (hereinafter referred to as the planned period), and then instructs the communication unit 210 to transmit control commands in accordance with the formulated control plan. The control commands may be transmitted all at once before the planned period for the entire planned period, or may be transmitted sequentially for each planned unit period, or may be transmitted in real time at intervals shorter than the planned unit period.

[0050] In the following, a case where the distributed power source controlled by the RA server 200 is the power storage device 120 will be exemplified.

[0051] The control unit 230 formulates a control plan (hereinafter referred to as a charge / discharge plan) for the power storage device 120 for each planning unit period (e.g., 30 minutes) that constitutes a planning period (e.g., one day). The charge / discharge plan includes an operation mode (e.g., a discharge mode, a charge mode, a standby mode) of the power storage device 120. The charge / discharge plan may include the discharge power and the charge power of the power storage device 120. Although not particularly limited, the control unit 230 may formulate a charge / discharge plan for the power storage device 120 so as to maximize the profits of the facility 100.

[0052] Under these conditions, the control unit 230 performs the following operations in response to receiving a DR request.

[0053] The control unit 230 assigns a value related to regulated power requested by the DR request to a first facility having both a first possible value for adjusting output power and a second possible value for adjusting demand power. After assigning the value related to regulated power to the first facility, the control unit 230 assigns a value related to remaining power in the value related to regulated power to a second facility having either the first possible value or the second possible value. The control unit 230 controls the power storage devices 120 installed in the first facility and the second facility based on the values ​​related to regulated power assigned to the first facility and the second facility.

[0054] Specifically, the following cases will be explained: a case where the DR request requests at least one of a decrease in demand power and an increase in output power (Case 1), and a case where the DR request requests at least one of a decrease in output power and an increase in demand power (Case 2).

[0055] In the following, a case will be illustrated in which the second facility has an output adjustment facility having a first possible value and a demand adjustment facility having a second possible value. Note that the value related to the adjustment power requested by the DR request is distributed by the distribution function unit 200A into a value related to the output adjustment power and a value related to the demand adjustment power.

[0056] Such allocation may be performed by the allocation function unit 200A so that the sum of the value related to the output adjustment power per unit period and the value related to the demand adjustment power per unit period matches the value related to the adjustment power per unit period. For example, the allocation may be performed according to the following options.

[0057] In option 1, the distribution may be made according to the ratio of the sum of the first possible values ​​for each facility 100 and the sum of the second possible values ​​for each facility 100.

[0058] In option 2, allocation may be based on the degradation of the distributed generation. For example, allocation may be based on the degradation of the distributed generation contributing to the first possible value such that the degradation does not exceed a threshold.

[0059] In option 3, the allocation may be based on the rewards obtained by responding to the DR request, for example, the allocation may be made so that the rewards are maximized.

[0060] Option 4 may be a combination of two or more options selected from Option 1 to Option 3. The two or more options may be combined based on weighting values ​​set for each of the two or more options.

[0061] First, in Case 1, the control unit 230 assigns a value related to demand adjustment power distributed from the value related to adjustment power to the first facility (first process). After assigning the value related to demand adjustment power to the first facility, the control unit 230 assigns a value related to the remaining power of demand adjustment power to the demand adjustment facility (second process). After assigning the value related to the remaining power of demand adjustment power to the demand adjustment facility, the control unit 230 assigns values ​​related to output adjustment power distributed from the value related to adjustment power to the output adjustment facility and the first facility (third process).

[0062] For example, as shown in FIG. 5, a case will be described in which facilities A to D can be controlled by the RA server 200. In FIG. 5, a case in which the demand power is 0 or less can be considered a case in which reverse power flow occurs in the facility 100. The difference between the reference value and the target value corresponds to the adjustable amount by which the demand power of the facility 100 can be reduced. Facility A is an example of a first facility having a first possible value of 2 kW and a second possible value of 1 kW per unit time. Facility B is an example of a second facility (demand adjustment facility) having a second possible value of 2 kW per unit time. Facility C is an example of a second facility (output adjustment facility) having a first possible value of 2 kW per unit time. Facility D is an example of a first facility having a first possible value of 3 kW and a second possible value of 2 kW per unit time.

[0063] In such a case, a case will be described in which the adjustment power requested in the DR request per unit time is a decrease in power demand of 11 kW, and the adjustment power is distributed to demand adjustment power of 4 kW and output adjustment power of 7 kW.

[0064] In the first process, 4 kW of demand adjustment power is allocated to a first facility (i.e., facility A and facility D in FIG. 5). For example, 1 kW of demand adjustment power is allocated to facility A, and 2 kW of demand adjustment power is allocated to facility D. The remaining power value related to the demand adjustment power is 1 kW (4 kW - 3 kW).

[0065] In the second process, a value related to the remaining power of 1 kW of demand adjustment power is assigned to a demand adjustment facility (i.e., facility B in FIG. 5). For example, 1 kW of demand adjustment power is assigned to facility B. As a result of the second process, the remaining power of the value related to demand adjustment power becomes zero.

[0066] In the third process, 7 kW of output adjustment power is allocated to the output adjustment facility (i.e., facility C in FIG. 5) and the first facility (i.e., facilities A and D in FIG. 5). For example, 2 kW of output adjustment power is allocated to facility A, 2 kW of output adjustment power is allocated to facility C, and 3 kW of output adjustment power is allocated to facility D.

[0067] As described above, in Case 1, where the DR request requests at least one of a decrease in power demand and an increase in output power, the first process allocates to the first facility a value related to demand adjustment power distributed from a value related to adjustment power, thereby preventing a situation in which the increase in output power in the first facility causes a decrease in power demand. Therefore, the RA server 200 can efficiently control the power storage device 120 in response to the DR request.

[0068] Second, in Case 2, the control unit 230 assigns a value related to output adjustment power distributed from the value related to adjustment power to the first facility (first process). After assigning the value related to output adjustment power to the first facility, the control unit 230 assigns a value related to remaining power of the value related to output adjustment power to the output adjustment facility (second process). After assigning the value related to remaining power of the value related to output adjustment power to the output adjustment facility, the control unit 230 assigns a value related to demand adjustment power distributed from the value related to adjustment power to the demand adjustment facility and the first facility (third process).

[0069] In Case 2, where the DR request requests at least one of a decrease in output power and an increase in power demand, similar to Case 1 described above, the first process allocates to the first facility a value related to output adjustment power distributed from a value related to adjustment power. This prevents the output power from increasing in the first facility when the power demand is reduced in the first facility. Therefore, the RA server 200 can efficiently control the power storage device 120 in response to the DR request.

[0070] In the embodiment, the control unit 230 configures a control unit that controls the distributed power sources (for example, the power storage devices 120) installed in the facility 100 in response to a DR request.

[0071] (AC server) The AC server according to the embodiment will be described below. As shown in FIG.

[0072] The communication unit 310 is configured by a communication module. The communication module may be a wireless communication module conforming to standards such as IEEE802.11a / b / g / n / ac / ax, ZigBee, Wi-SUN, LTE, 5G, or 6G, or may be a wired communication module conforming to standards such as IEEE802.3.

[0073] For example, the communication unit 310 receives, from the RA server 200, a planned value (reference value) related to the power demand of the facility 100 in which the distributed power sources controlled by the RA server 200 are installed. The communication unit 310 receives, from the RA server 200, the amount of power that can be adjusted in response to a DR request (hereinafter, the adjustable amount). The adjustable amount may be calculated in each of the facilities 100, transmitted from each of the facilities 100 to the RA server 200, aggregated and / or processed by the RA server 200, and then reported to the AC server 300. The communication unit 310 may transmit the DR request to the RA server 200.

[0074] The management unit 320 is configured by a storage medium such as a hard disk drive (HDD), a solid state drive (SSD), or a nonvolatile memory.

[0075] For example, the management unit 320 may manage information related to the facility 100 to which the electricity retailer sells electricity. For example, the information related to the facility 100 may include the type of distributed power source (solar cell device 110, power storage device 120, or fuel cell device 130) installed in the facility 100, the specifications of the distributed power source (solar cell device 110, power storage device 120, or fuel cell device 130) installed in the facility 100, etc. The specifications may include the rated power generation 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 charging and discharging power, etc.

[0076] The control unit 330 may include at least one processor. The at least one processor may be configured by a single integrated circuit (IC) or may be configured by multiple circuits (such as integrated circuits and / or discrete circuits) communicatively connected.

[0077] For example, the control unit 330 may formulate a planned value for the power demand of the facility 100 to which the AC server 300 (retail electricity supplier) sells electricity (i.e., a planned value for the procured power) based on a planned value (reference value) for the power demand of the facility 100 received from the RA server 200.

[0078] For example, the control unit 330 may instruct the communication unit 310 to transmit a DR request based on the reference value and the adjustable amount received from the RA server 200. The adjustable amount is the amount of power that can be adjusted in response to a DR request. The adjustable amount may be calculated in each of the facilities 100, transmitted from each of the facilities 100 to the RA server 200, aggregated and / or processed by the RA server 200, and then reported to the AC server 300.

[0079] (Power supply control method) The power supply control method according to the embodiment will be described below, taking as an example a case where the distribution function unit 200A and the DSR-MS 200B are separate units.

[0080] First, case 1, in which the DR request requests at least one of a decrease in power demand and an increase in output power, will be described with reference to FIG.

[0081] As shown in FIG. 6, the distribution function unit 200A receives a DR request from the AC server 300 in step S10.

[0082] In step S11, the distribution function unit 200A distributes the value related to the adjustment power requested by the DR request into a value related to the output adjustment power and a value related to the demand adjustment power.

[0083] In step S12, the distribution function unit 200A transmits information indicating the value related to the demand adjustment power distributed from the value related to the adjustment power to the DSR-MS 200B. The information indicating the value related to the demand adjustment power may be interpreted as a command related to the demand plan (demand plan command) for the facility 100.

[0084] In step S13, the distribution function unit 200A transmits information indicating the value related to the output adjustment power distributed from the value related to the adjustment power to the DSR-MS 200B. The information indicating the value related to the output adjustment power may be interpreted as a command related to the power generation plan of the facility 100 (power generation plan command).

[0085] In step S20, the DSR-MS 200B receives facility information from the facility 100. The facility information may include information indicating the adjustable amount of power for each unit period (e.g., 30 minutes) that constitutes the target period. The adjustable amount of power for each unit period may include information indicating a first possible value to which the output power can be adjusted, and may include information indicating a second possible value to which the demand power can be adjusted.

[0086] In step S30A, the DSR-MS 200B allocates a value related to demand regulating power, which is distributed from the value related to regulating power, to the first facility (first process).

[0087] In step S31A, the DSR-MS 200B allocates a value related to the demand adjustment power to the first facility, and then allocates a value related to the remaining power of the demand adjustment power to the demand adjustment facility (second facility) (second processing).

[0088] In step S32A, DSR-MS200B assigns a value related to the remaining power of the demand adjustment power to the demand adjustment facility, and then assigns a value related to the output adjustment power distributed from the value related to the adjustment power to the output adjustment facility (second facility) and the first facility (third processing).

[0089] In step S33, the DSR-MS 200B transmits a control command to the facility 100 to control the power storage devices 120 installed in the first facility and the second facility based on the values ​​related to the regulating power allocated to the first facility and the second facility.

[0090] Secondly, case 2 in which the DR request requests at least one of a decrease in output power and an increase in power demand will be described with reference to FIG.

[0091] As shown in FIG. 7, the distribution function unit 200A receives a DR request from the AC server 300 in step S10.

[0092] In step S11, the distribution function unit 200A distributes the value related to the adjustment power requested by the DR request into a value related to the output adjustment power and a value related to the demand adjustment power.

[0093] In step S12, the distribution function unit 200A transmits information indicating the value related to the demand adjustment power distributed from the value related to the adjustment power to the DSR-MS 200B. The information indicating the value related to the demand adjustment power may be interpreted as a command related to the demand plan (demand plan command) for the facility 100.

[0094] In step S13, the distribution function unit 200A transmits information indicating the value related to the output adjustment power distributed from the value related to the adjustment power to the DSR-MS 200B. The information indicating the value related to the output adjustment power may be interpreted as a command related to the power generation plan of the facility 100 (power generation plan command).

[0095] In step S20, the DSR-MS 200B receives facility information from the facility 100. The facility information may include information indicating the adjustable amount of power for each unit period (e.g., 30 minutes) that constitutes the target period. The adjustable amount of power for each unit period may include information indicating a first possible value to which the output power can be adjusted, and may include information indicating a second possible value to which the demand power can be adjusted.

[0096] In step S30B, the DSR-MS 200B allocates the value related to the output adjustment power, which is distributed from the value related to the adjustment power, to the first facility (first process).

[0097] In step S31B, the DSR-MS 200B assigns the value related to the output adjustment power to the first facility, and then assigns the value related to the remaining power of the value related to the output adjustment power to the output adjustment facility (second facility) (second process).

[0098] In step S32B, DSR-MS200B assigns the value related to the remaining power of the value related to output adjustment power to the output adjustment facility, and then assigns the value related to demand adjustment power distributed from the value related to adjustment power to the demand adjustment facility (second facility) and the first facility (third processing).

[0099] In step S33, the DSR-MS 200B transmits a control command to the facility 100 to control the power storage devices 120 installed in the first facility and the second facility based on the values ​​related to the regulating power allocated to the first facility and the second facility.

[0100] (Action and effect) In the embodiment, the RA server 200 assigns a value related to the regulated power requested by the DR request to a first facility having both a first possible value for adjusting the output power and a second possible value for adjusting the demand power, and after assigning the value related to the regulated power to the first facility, assigns a value related to the remaining power of the value related to the regulated power to a second facility having either the first possible value or the second possible value. This configuration prevents a situation in which adjustment of one of the demand power and the output power in the first facility affects adjustment of the other of the demand power and the output power, and therefore the RA server 200 can efficiently control the distributed power source (e.g., the power storage device 120) in response to the DR request.

[0101] For example, in case 1 where the DR request requests at least one of a decrease in power demand and an increase in output power, the first process allocates a value related to demand adjustment power distributed from a value related to adjustment power to the first facility, thereby preventing a situation in which the increase in output power in the first facility causes a decrease in power demand. Therefore, the RA server 200 can efficiently control the distributed power sources (e.g., the power storage device 120) in response to the DR request.

[0102] For example, in case 2 where the DR request requests at least one of a decrease in output power and an increase in power demand, the first process allocates to the first facility a value related to output adjustment power distributed from a value related to adjustment power, thereby avoiding a situation where the output power of the first facility increases in accordance with a decrease in power demand when the power demand of the first facility is reduced. Therefore, the RA server 200 can efficiently control the distributed power sources (e.g., the power storage device 120) in response to the DR request.

[0103] [Other embodiments] Although the present invention has been described by the above-mentioned embodiments, the descriptions and drawings that form part of this disclosure should not be understood to limit the present invention. From this disclosure, various alternative embodiments, examples, and operating techniques will become apparent to those skilled in the art.

[0104] In the above disclosure, an example has been given in which the RA server 200 receives information indicating a first possible value by which the output power can be adjusted and information indicating a second possible value by which the demand power can be adjusted from the facility 100. However, the above disclosure is not limited to this. The RA server 200 may formulate a power generation plan and a demand plan for the facility 100, identify the first possible value based on the power generation plan, and identify the second possible value based on the demand plan.

[0105] In the above disclosure, an example has been given of a case in which the distribution function unit 200A distributes a value related to demand adjustment power and a value related to output adjustment power from an adjustment request. However, the above disclosure is not limited to this. The DSR-MS 200B may distribute a value related to demand adjustment power and a value related to output adjustment power from an adjustment request by itself. In such a case, the distribution function unit 200A may be unnecessary. In other words, the DSR-MS 200B may be considered to be the RA server 200 itself. In such a case, the power supply control device may be considered to be the DSR-MS 200B or the RA server 200.

[0106] Although not specifically mentioned in the above disclosure, the first possible value for adjusting the output power may be interpreted as the possible amount of reverse power flow. That is, under the premise that the output power and the power consumption are expressed in absolute values, the first possible value may be the power obtained by subtracting the power consumption of the facility 100 (so-called self-power consumption) from the output power of the facility 100. The self-power consumption may include the power consumption covered by the discharged power of the power storage device 120 (the so-called boost effect). Alternatively, when reverse power flow occurs, the power storage device 120 may not be discharged.

[0107] In the above disclosure, the amount of electric energy may be expressed in kWh, etc. Power is the amount of electric energy per unit time, and may be expressed in kW, etc. When there is no particular influence of the time factor, the amount of electric energy and power may be interpreted interchangeably.

[0108] In the above disclosure, the output power of the facility 100 may include the power generated by a power generation device installed in the facility 100, and may also include reverse flow power (hereinafter referred to as reverse flow discharge power) that is discharge power of the power storage device 120 installed in the facility 100 and is output from the facility 100. The output power of the facility 100 may be interpreted as the reverse flow power of the facility 100.

[0109] In the above disclosure, when the output power of the facility 100 includes reverse flow discharge power, the planned power generation value of the facility 100 may be read as the planned output value of the facility 100.

[0110] In the above disclosure, the first possible value, the second possible value, the value related to regulated power, the value related to remaining power, the value related to demand regulated power, and the value related to output regulated power may be expressed as an amount of power [Wh], power [W], instantaneous power [ΔW], current [A], energy [J], or the like. Energy [J] may be interpreted as an amount of power [Ws]. Note that current [A] may be considered to be usable in the same way as power [W] under the assumption that the voltage [V] supplied to facility 100 is approximately constant. Note that "value" may be interpreted as "quantity" or "physical quantity."

[0111] In the above disclosure, the case where the distributed power source controlled by the RA server 200 is the power storage device 120 has been exemplified. However, the above disclosure is not limited to this. The distributed power source controlled by the RA server 200 may be a fuel cell device 130 or a diesel generator.

[0112] In the above disclosure, a case has been described in which the RA server 200 and the AC server 300 are separate servers. However, the above disclosure is not limited to this. The RA server 200 and the AC server 300 may be a single 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.

[0113] Although not specifically mentioned in the above disclosure, a program may be provided that causes a computer to execute each process performed by the RA server 200. The program may also be recorded on a computer-readable medium. Using the computer-readable medium, the program can be installed 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, but may be, for example, a recording medium such as a CD-ROM or a DVD-ROM.

[0114] Alternatively, a chip may be provided that is configured by a memory that stores programs for executing the processes performed by the RA server 200 and a processor that executes the programs stored in the memory.

[0115] [Note] The above disclosure may be expressed as follows: A first feature of the power supply control device is that it includes: a receiving unit that receives an adjustment request that requests an adjustment of power supply and demand in an electric power grid; and a control unit that controls distributed power sources installed in facilities in response to the adjustment request, wherein the control unit assigns a value related to adjustment power requested by the adjustment request to a first facility that has both a first possible value for adjusting output power and a second possible value for adjusting demand power, and after assigning the value related to adjustment power to the first facility, assigns a value related to remaining power of the value related to adjustment power to a second facility that has either the first possible value or the second possible value, and controls the distributed power sources installed in the first facility and the second facility based on the values ​​related to adjustment power assigned to the first facility and the second facility.

[0116] A second feature is the power supply control device of the first feature, wherein the second facility includes an output adjustment facility having the first possible value and a demand adjustment facility having the second possible value, and when the adjustment request requests at least one of a decrease in demand power and an increase in output power, the control unit assigns a value related to demand adjustment power distributed from the value related to adjustment power to the first facility, and after allocating the value related to demand adjustment power to the first facility, assigns a value related to remaining power of the demand adjustment power to the demand adjustment facility, and after allocating the value related to remaining power of demand adjustment power to the demand adjustment facility, assigns a value related to output adjustment power distributed from the value related to adjustment power to the output adjustment facility and the first facility.

[0117] A third feature is the power supply control device according to the first feature or the second feature, wherein the second facility includes an output adjustment facility having the first possible value and a demand adjustment facility having the second possible value, and when the adjustment request requests at least one of a decrease in output power and an increase in demand power, the control unit assigns a value related to output adjustment power distributed from the value related to adjustment power to the first facility, and after allocating the value related to output adjustment power to the first facility, assigns a value related to remaining power of the value related to output adjustment power to the output adjustment facility, and after allocating the value related to remaining power of the value related to output adjustment power to the output adjustment facility, assigns a value related to demand adjustment power distributed from the value related to adjustment power to the demand adjustment facility and the first facility.

[0118] A fourth feature is the power supply control device according to the second feature, wherein the control unit distributes the value related to the demand adjustment power and the value related to the output adjustment power from the value related to the adjustment power, or acquires the value related to the demand adjustment power and the value related to the output adjustment power from a distribution function unit.

[0119] A fifth feature is the power supply control device according to the third feature, wherein the control unit distributes the value related to the demand adjustment power and the value related to the output adjustment power from the value related to the adjustment power, or acquires the value related to the demand adjustment power and the value related to the output adjustment power from a distribution function unit.

[0120] In a sixth feature, the power supply control method includes: a step A of receiving an adjustment request requesting adjustment of power supply and demand in an electric power grid; and a step B of controlling distributed power sources installed in facilities in response to the adjustment request, wherein the step A includes a step of assigning a value related to adjustment power requested by the adjustment request to a first facility having both a first possible value for adjusting output power and a second possible value for adjusting demand power; after assigning the value related to adjustment power to the first facility, a step of assigning a value related to remaining power of the value related to adjustment power to a second facility having either the first possible value or the second possible value; and a step of controlling the distributed power sources installed in the first facility and the second facility based on the values ​​related to adjustment power assigned to the first facility and the second facility. [Explanation of symbols]

[0121] 1...power supply control system, 11...network, 12...power system, 100...facility, 110...solar cell device, 120...power 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 adjustment of power supply and demand in a power grid; a control unit that controls the distributed power sources installed in the facility in response to the adjustment request, The control unit assigning a value for the adjustment power requested by the adjustment request to a first facility having both a first possible value to which output power can be adjusted and a second possible value to which demand power can be adjusted; after assigning the value related to the regulated power to the first facility, assigning a value related to remaining power of the value related to the regulated power to a second facility having either the first possible value or the second possible value; a power supply control device that controls the distributed power supplies installed in the first facility and the second facility based on values ​​related to regulated power allocated to the first facility and the second facility.

2. the second facility includes an output regulation facility having the first possible value and a demand regulation facility having the second possible value; When the adjustment request requests at least one of a decrease in power demand and an increase in output power, the control unit: assigning a value related to demand regulating power allocated from the value related to regulating power to the first facility; After allocating the value related to the demand adjustment power to the first facility, allocate a value related to the remaining power of the demand adjustment power to the demand adjustment facility; 2. The power supply control device according to claim 1, wherein after a value related to the remaining power of the demand adjustment power is assigned to the demand adjustment facility, a value related to output adjustment power distributed from the value related to the adjustment power is assigned to the output adjustment facility and the first facility.

3. the second facility includes an output regulation facility having the first possible value and a demand regulation facility having the second possible value; When the adjustment request requests at least one of a decrease in output power and an increase in demand power, the control unit: assigning a value related to output regulation power allocated from the value related to regulation power to the first facility; After allocating the value related to the output adjustment power to the first facility, allocate a value related to the remaining power of the value related to the output adjustment power to the output adjustment facility; 2. The power supply control device according to claim 1, wherein after a value related to remaining power in the value related to output adjustment power is assigned to the output adjustment facility, a value related to demand adjustment power distributed from the value related to adjustment power is assigned to the demand adjustment facility and the first facility.

4. 3. The power supply control device according to claim 2, wherein the control unit distributes the value related to the demand adjustment power and the value related to the output adjustment power from the value related to the adjustment power, or acquires the value related to the demand adjustment power and the value related to the output adjustment power from a distribution function unit.

5. 4. The power supply control device according to claim 3, wherein the control unit distributes the value related to the demand adjustment power and the value related to the output adjustment power from the value related to the adjustment power, or acquires the value related to the demand adjustment power and the value related to the output adjustment power from a distribution function unit.

6. Step A of receiving an adjustment request for requesting adjustment of power supply and demand in a power grid; and step B of controlling the distributed power sources installed in the facility in response to the adjustment request, Step A assigning a value for the adjustment power requested by the adjustment request to a first facility having both a first possible value to which output power can be adjusted and a second possible value to which demand power can be adjusted; After assigning the value related to the regulated power to the first facility, assigning a value related to remaining power of the value related to the regulated power to a second facility having either the first possible value or the second possible value; and controlling the distributed power sources installed in the first facility and the second facility based on values ​​related to regulated power allocated to the first facility and the second facility.

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