Distribution device, power control system, distribution method, and distribution program

Abstract

To proportionally divide necessary adjustment force which should be secured in a planning period.SOLUTION: A distribution device 20 comprises a control unit 21 which acquires information regarding either of costs by every time zone or carbon dioxide emission by every time zone for each of a plurality of kinds of power sources 11 used for providing adjustment force in a plurality of time zones, sets ratio at which each of the plurality of kinds of power sources 11 is used to provide the adjustment force as distribution ratio by referring to the acquired information for each time zone included in the plurality of time zones, and outputs a setting value of the distribution ratio by every time zone.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a distribution device, a power control system, a distribution method, and a distribution program. [Background technology]

[0002] Patent Document 1 discloses an operation planning device for a power plant having a power generation facility and an energy storage facility.

[0003] Patent Document 2 discloses an energy management system that controls the buying and selling of grid power in association with the charging and discharging of a power storage device that can store grid power from a power grid and power generated by a power generation device.

[0004] Patent Document 3 discloses a power control device that selects either a charging priority operation that prioritizes a charging operation in which surplus power generated by a distributed power source, excluding demand power, is charged to a power storage device over a power selling operation in which surplus power is output to a power grid as power to be sold, or a power selling priority operation that prioritizes a power selling operation over a charging operation, for each target operation period, and performs the selected operation. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2021-035277 [Patent Document 2] Japanese Patent Application Publication No. 2022-142957 [Patent Document 3] International Publication No. 2017 / 094223 Summary of the Invention [Problem to be solved by the invention]

[0006] Retail electricity suppliers or registered specified electricity transmission and distribution companies must comply with the Planned Value Coordination System to avoid disrupting the local electricity supply and demand. The Planned Value Coordination System requires them to submit facility operation plans for their jurisdiction to OCCTO, or to the representative contractor if they join a balancing group. "OCCTO" is an abbreviation for Organization for Cross-regional Coordination of Transmission Operators. Facility operation plans are created in the following steps: (i) forecast electricity demand and solar power generation, and (ii) create a facility operation plan that can cover the power shortage in (i) and minimize costs.

[0007] In facility operation planning, it is necessary to ensure the adjustment capacity to absorb the forecast error that occurs in (i). The adjustment capacity required to absorb the forecast error during the planning period plus the adjustment capacity required for DR at the DR target time is the adjustment capacity required to be secured during the planning period. "DR" is an abbreviation for demand response.

[0008] The purpose of this disclosure is to apportion the necessary adjustment capacity to be secured during the planning period. [Means for solving the problem]

[0009] The allocation device according to the present disclosure comprises: The system is equipped with a control unit that acquires information regarding either the cost by time period or the carbon dioxide emissions by time period for each of multiple types of power sources used to provide adjustment power in multiple time periods, and that, for each time period included in the multiple time periods, refers to the acquired information, sets the ratio at which each of the multiple types of power sources is used to provide adjustment power as an allocation rate, and outputs a set value for the allocation rate by time period.

[0010] The allocation method according to the present disclosure is: Acquiring, by a distribution device, information on either the cost by time period or the carbon dioxide emission amount by time period for each of a plurality of types of power sources used to provide adjustment power in a plurality of time periods; For each time period included in the plurality of time periods, by referring to the acquired information, the allocation device sets a ratio at which each of the plurality of types of power sources is used to provide adjustment power as an allocation rate; outputting a set value of the allocation rate for each time period from the allocation device; Includes.

[0011] The allocation program according to the present disclosure: Acquiring information on either a cost by time period or a carbon dioxide emission by time period for each of a plurality of types of power sources used to provide adjustment power in a plurality of time periods; For each time period included in the plurality of time periods, refer to the acquired information and set a ratio at which each of the plurality of types of power sources is used to provide adjustment power as an allocation rate; Outputting the set value of the allocation rate by time period The computer is caused to perform operations including: [Effects of the Invention]

[0012] According to the present disclosure, it is possible to apportion the necessary adjustment capacity to be secured during the planning period. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a diagram illustrating a configuration of a power control system according to an embodiment of the present disclosure. [Figure 2] 1 is a graph showing an example of the necessary adjustment capacity to be secured during the planning period. [Figure 3] 10 is a flowchart illustrating the operation of an allocation device according to an embodiment of the present disclosure. [Figure 4] 4 is a flowchart showing a specific procedure for the process in step S9 of FIG. 3. [Figure 5]FIG. 10 is a diagram illustrating an example of an allocation result and its influence on a subsequent process according to an embodiment of the present disclosure. [Figure 6] 10 is a flowchart showing a modified example of the specific procedure of the process in step S9 of FIG. 3. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings.

[0015] In each drawing, the same or corresponding parts are denoted by the same reference numerals. In the description of this embodiment, the description of the same or corresponding parts will be omitted or simplified as appropriate.

[0016] The configuration of a power control system 10 according to this embodiment will be described with reference to FIG.

[0017] The power control system 10 includes a distribution device 20 and a power control device 30. The distribution device 20 is capable of communicating with the power control device 30 via a network 40.

[0018] The distribution device 20 and the power control device 30 are computers installed in facilities such as substations or data centers. The distribution device 20 and the power control device 30 are operated by an electric utility such as a retail electricity supplier or a registered specified electricity transmission and distribution supplier.

[0019] Network 40 may include the Internet, at least one WAN, at least one MAN, or any combination thereof. "WAN" is an abbreviation for wide area network. "MAN" is an abbreviation for metropolitan area network. Network 40 may include at least one wireless network, at least one optical network, or any combination thereof. A wireless network may be, for example, an ad-hoc network, a cellular network, a wireless LAN, a satellite communication network, or a terrestrial microwave network. "LAN" is an abbreviation for local area network.

[0020] An outline of this embodiment will be described.

[0021] The distribution device 20 acquires information on either the time-slot cost Ci or the time-slot carbon dioxide emissions Ei for each of the multiple types of power sources 11 used to provide adjustment capability in multiple time slots P. "Adjustment capability" refers to the capacity of power generation facilities (including pumped-storage power generation facilities), power storage facilities, DR and other systems that control power supply and demand, and other similar facilities (excluding distribution facilities) required for frequency control, supply and demand balance adjustment, and other grid stabilization operations in a service area. The multiple time slots P correspond to a planning period. The length of the planning period is, for example, 24 hours or 72 hours. The multiple types of power sources 11 may include any power source, but in this embodiment, include a generator 12 and a storage battery 13. The information on the time-slot cost Ci may include information on any cost associated with using the multiple types of power sources 11, but in this embodiment, it includes information on the time-slot fuel price 24, information on the time-slot power purchase price 25, and information on the time-slot power sale price 26.

[0022] The distribution device 20 references the acquired information for each time slot Ti included in the multiple time slots P and sets the ratio at which each of the multiple types of power sources 11 is used to provide adjustment power as the distribution rate Di. Each time slot Ti corresponds to each frame of the planning period. The length of one frame is, for example, 30 minutes.

[0023] The distribution device 20 outputs the set value of the distribution rate Di for each time period. The power control device 30 controls the multiple types of power sources 11 according to the set value of the distribution rate Di for each time period output from the distribution device 20.

[0024] According to this embodiment, it is possible to allocate the required adjustment capacity 50 to be secured over the planning period, as shown in Fig. 2. Specifically, in the method of allocating the required adjustment capacity 50 to be secured over the planning period, it is possible to select means for securing adjustment capacity in ascending order of unit cost or in descending order of carbon dioxide emissions.

[0025] The required adjustability 50 to be secured during the planning period is the sum of the required adjustability 51 for absorbing forecast errors during the planning period and the required adjustability 52 for DR at the DR target time. The unit is kW. The required adjustability 50 to be secured during the planning period is divided into PA and NA. "PA" is an abbreviation for positive adjustability. "NA" is an abbreviation for negative adjustability.

[0026] The PA is an adjustment capacity for procuring power shortages resulting from prediction errors regarding power demand and photovoltaic power generation during the planning period, and may also include the required adjustment capacity 52 for DR at the DR target time. In this embodiment, the PA is secured by leaving surplus power generation capacity in the generator 12, storing power in the storage battery 13, or both.

[0027] NA is an adjustment capability for absorbing surplus power due to prediction errors of power demand and solar power generation amount during the planning period. In this embodiment, NA is secured by allowing the generator 12 to generate power, or by leaving excess power storage capacity in the storage battery 13, or by both.

[0028] The configuration of a distribution device 20 according to this embodiment will be described with reference to FIG.

[0029] The distribution device 20 includes a control unit 21, a storage unit 22, and a communication unit 23.

[0030] The control unit 21 includes at least one processor, at least one programmable circuit, at least one dedicated circuit, or any combination thereof. The processor is a general-purpose processor such as a CPU or GPU, or a dedicated processor specialized for a specific process. "CPU" is an abbreviation for central processing unit. "GPU" is an abbreviation for graphics processing unit. An example of the programmable circuit is an FPGA. "FPGA" is an abbreviation for field-programmable gate array. An example of the dedicated circuit is an ASIC. "ASIC" is an abbreviation for application specific integrated circuit. The control unit 21 controls each part of the distribution device 20 and executes processes related to the operation of the distribution device 20.

[0031] The storage unit 22 includes at least one semiconductor memory, at least one magnetic memory, at least one optical memory, or any combination thereof. The semiconductor memory is, for example, a RAM, a ROM, or a flash memory. "RAM" is an abbreviation for random access memory. "ROM" is an abbreviation for read only memory. RAM is, for example, an SRAM or a DRAM. "SRAM" is an abbreviation for static random access memory. "DRAM" is an abbreviation for dynamic random access memory. ROM is, for example, an EEPROM. "EEPROM" is an abbreviation for electrically erasable programmable read only memory. Flash memory is, for example, an SSD. "SSD" is an abbreviation for solid-state drive. Magnetic memory is, for example, an HDD. "HDD" is an abbreviation for hard disk drive. The storage unit 22 functions, for example, as a main storage device, an auxiliary storage device, or a cache memory. The storage unit 22 stores information used in the operation of the allocation device 20 and information obtained by the operation of the allocation device 20. In this embodiment, the storage unit 22 stores information on at least one of the cost Ci by time zone and the carbon dioxide emission amount Ei by time zone.

[0032] The communication unit 23 includes at least one communication module. The communication module is, for example, a module that is compatible with a wired LAN communication standard such as Ethernet (registered trademark) or a wireless LAN communication standard such as IEEE802.11. "IEEE" is an abbreviation for Institute of Electrical and Electronics Engineers. The communication unit 23 communicates with devices other than the distribution device 20, such as the power control device 30. The communication unit 23 receives information used in the operation of the distribution device 20, and transmits information obtained by the operation of the distribution device 20. In this embodiment, the communication unit 23 receives information on at least one of the cost Ci by time zone and the carbon dioxide emission amount Ei by time zone.

[0033] The functions of the allocation device 20 are realized by executing an allocation program according to this embodiment on a processor serving as the control unit 21. That is, the functions of the allocation device 20 are realized by software. The allocation program causes a computer to execute the operations of the allocation device 20, thereby causing the computer to function as the allocation device 20. That is, the computer functions as the allocation device 20 by executing the operations of the allocation device 20 in accordance with the allocation program.

[0034] The program can be stored on a non-transitory computer-readable medium. Examples of non-transitory computer-readable media include flash memory, magnetic recording devices, optical disks, magneto-optical recording media, and ROMs. The program can be distributed by selling, transferring, or lending portable media such as SD cards, DVDs, or CD-ROMs that store the program. "SD" is an abbreviation for Secure Digital. "DVD" is an abbreviation for digital versatile disc. "CD-ROM" is an abbreviation for compact disc read only memory. The program can also be distributed by storing it in the storage of a server and transferring it from the server to another computer. The program can also be provided as a program product.

[0035] A computer temporarily stores a program stored on a portable medium or transferred from a server in its main storage device. The computer then reads the program stored in the main storage device using a processor and executes processing in accordance with the read program. The computer may also read the program directly from a portable medium and execute processing in accordance with the program. The computer may also execute processing in accordance with the received program each time a program is transferred from a server to the computer. Processing may also be executed through a so-called ASP-type service that achieves its functions by issuing execution instructions and obtaining results without transferring the program from the server to the computer. "ASP" is an abbreviation for application service provider. A program is information used for processing by a computer and includes something equivalent to a program. For example, data that is not a direct instruction to a computer but has properties that specify computer processing falls under the category of "something equivalent to a program."

[0036] Some or all of the functions of the distribution device 20 may be realized by a programmable circuit or a dedicated circuit as the control unit 21. In other words, some or all of the functions of the distribution device 20 may be realized by hardware.

[0037] The operation of the distribution device 20 according to this embodiment will be described with reference to Fig. 3. The operation shown in Fig. 3 corresponds to the distribution method according to this embodiment.

[0038] In step S1, the control unit 21 acquires information regarding the required adjustment capacity 50 to be secured during the planning period and information regarding the specifications of the multiple types of power sources 11. For example, the control unit 21 receives the information regarding the required adjustment capacity 50 to be secured during the planning period and information regarding the specifications of the multiple types of power sources 11 from the administrator's terminal device or an external server device via the communication unit 23. Alternatively, the control unit 21 may directly receive input of the information regarding the required adjustment capacity 50 to be secured during the planning period and information regarding the specifications of the multiple types of power sources 11 from the administrator. The information regarding the specifications of the multiple types of power sources 11 includes information regarding the specifications of the generator 12 and information regarding the specifications of the storage battery 13. The control unit 21 refers to the acquired information and determines whether the sum of PA and NA during the planning period is greater than the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13. In FIG. 2, the total area of ​​PA and NA corresponds to the sum of PA and NA.

[0039] If the sum of PA and NA for the planning period is greater than the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13, the process of step S2 is executed. If the sum of PA and NA for the planning period is equal to or less than the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13, the process of step S9 is executed.

[0040] In step S2, the control unit 21 acquires information regarding consideration of bidding in the balancing market. For example, the control unit 21 receives the information regarding consideration of bidding in the balancing market from the manager's terminal device or an external server device via the communication unit 23. Alternatively, the control unit 21 may directly accept input of the information regarding consideration of bidding in the balancing market from the manager. The control unit 21 refers to the acquired information and determines whether the PA includes a portion regarding consideration of bidding in the balancing market.

[0041] If the PA includes a portion for which bidding is being considered for the balancing market, the process proceeds to step S3. If the PA does not include a portion for which bidding is being considered for the balancing market, the process proceeds to step S5.

[0042] In step S3, the control unit 21 subtracts the amount of the bid to be considered for the balancing market from the PA. The control unit 21 may subtract only a part of the amount of the bid to be considered for the balancing market from the PA, as long as the sum of the PA and the NA for the planning period can be made equal to the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13. The control unit 21 may prompt the manager to cancel or reconsider the consideration of the bid to be considered for the balancing market. After step S3, the processing of step S4 is executed.

[0043] In step S4, the control unit 21 refers to the information acquired in step S1 and determines whether the sum of PA and NA for the planning period is greater than the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13. PA here is the PA after the amount for consideration of bidding in the supply and demand adjustment market in step S3 has been deducted.

[0044] If the sum of PA and NA for the planning period is greater than the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13, the process of step S5 is executed. If the sum of PA and NA for the planning period is equal to or less than the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13, the process of step S9 is executed.

[0045] In step S5, the control unit 21 acquires information regarding how to deal with the excess of the contract power. For example, the control unit 21 receives information regarding how to deal with the excess of the contract power from the manager's terminal device or an external server device via the communication unit 23. Alternatively, the control unit 21 may directly accept input of information regarding how to deal with the excess of the contract power from the manager. A plan for dealing with the excess of the contract power is made when it is likely that the contract power will be exceeded, such as when the reserve margin falls below 5% as a result of the power supply and demand forecast. The control unit 21 refers to the acquired information and determines whether the PA includes an amount for dealing with the excess of the contract power.

[0046] If the PA includes a portion for coping with the excess of the contracted power, the process proceeds to step S6. If the PA does not include a portion for coping with the excess of the contracted power, the process proceeds to step S8.

[0047] In step S6, the control unit 21 subtracts from PA the amount corresponding to the excess of the contracted power. The control unit 21 may subtract only a part of the amount corresponding to the excess of the contracted power from PA, as long as the sum of PA and NA for the planning period can be made equal to the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13. The control unit 21 may urge the manager to take measures to prevent the excess of the contracted power from occurring by reducing the power demand in the relevant time period, such as a request for power saving, so that measures to prevent the excess of the contracted power from occurring. After step S6, the process of step S7 is executed.

[0048] In step S7, the control unit 21 refers to the information acquired in step S1 and determines whether the sum of PA and NA for the planning period is greater than the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13. PA here is the value after the amount corresponding to the excess of the contracted power has been deducted in step S6.

[0049] If the sum of PA and NA for the planning period is greater than the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13, the process of step S8 is executed. If the sum of PA and NA for the planning period is equal to or less than the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13, the process of step S9 is executed.

[0050] In step S8, the control unit 21 prompts the manager to consider strengthening the power source 11, such as introducing a new generator, a new storage battery, or both. After step S8, the operation shown in FIG. 3 ends.

[0051] In step S9, the control unit 21 allocates the required adjustment capacity 50 to be secured over the planning period. Specifically, the control unit 21 acquires information regarding either the time-slot cost Ci or the time-slot carbon dioxide emission amount Ei for each of the multiple types of power sources 11. For example, the control unit 21 receives information regarding either the time-slot cost Ci or the time-slot carbon dioxide emission amount Ei from the administrator's terminal device or an external server device via the communication unit 23. Alternatively, the control unit 21 may directly receive information regarding either the time-slot cost Ci or the time-slot carbon dioxide emission amount Ei from the administrator. The control unit 21 references the acquired information for each time slot Ti included in the multiple time slots P and sets the ratio at which each of the multiple types of power sources 11 is used to provide adjustment capacity as the allocation rate Di. The control unit 21 outputs the set value of the time-slot allocation rate Di. For example, the control unit 21 transmits the set value of the time-slot allocation rate Di to the power control device 30 via the communication unit 23. After step S9, the operation illustrated in FIG. 3 ends.

[0052] The specific procedure of the process in step S9 will be described with reference to FIG.

[0053] The processing from step S901 to step S906 is executed for each time slot Ti included in the plurality of time slots P, that is, for each frame of the planning period.

[0054] In steps S901 to S903, for each time slot Ti, the control unit 21 references information on the corresponding fuel price 24 and information on the corresponding power purchase price 25, and sets, as the allocation rate Di, the ratio at which at least the power generator 12 and the storage battery 13 are used to provide adjustment capability for a power shortage. Specifically, for each time slot Ti, the control unit 21 compares the cost of procuring the power shortage by supplying fuel to the power generator 12 and causing the power generator 12 to generate electricity with the cost of procuring the power shortage by supplying the power obtained by purchasing electricity to the storage battery 13 and discharging it into the storage battery 13, and sets the ratio at which the power generator 12 and the storage battery 13 are used to provide adjustment capability for a power shortage. For example, if the power generator 12 is an FC power generator, the fuel is hydrogen. "FC" is an abbreviation for fuel cell.

[0055] More specifically, in step S901, the control unit 21 compares the predicted values ​​of the power procurement costs for generating power by consuming fuel and discharging power by purchasing it externally. If it is predicted that the power procurement cost for purchasing power from an external source and discharging it will be lower than the power procurement cost for generating power by consuming fuel, in step S902, the control unit 21 prioritizes reserving the discharge reserve capacity of the storage battery 13 for PA. If the discharge reserve capacity of the storage battery 13 that can be reserved for PA is insufficient, taking into account the amount to be reserved for NA, the control unit 21 also reserves the power generation reserve capacity of the generator 12. For example, if half the rated capacity of the storage battery 13 is reserved for NA, only half the rated capacity of the storage battery 13 can be reserved for PA. If it is predicted that the power procurement cost for generating power by consuming fuel is lower than the power procurement cost for purchasing power from an external source and discharging it, or that the costs are the same for both, in step S903, the control unit 21 prioritizes reserving the power generation reserve capacity of the generator 12 for PA. If the power generation reserve of the generator 12 that can be secured for PA is insufficient after taking into consideration the amount secured for NA, the control unit 21 also secures the discharge reserve of the storage battery 13. For example, if half of the rated output of the generator 12 is secured for NA, only half of the rated output of the generator 12 can be secured for PA.

[0056] In steps S904 to S906, the control unit 21 references, for each time slot Ti, information on the corresponding power selling price 26 and information on the corresponding power purchasing price 25, and sets, as the allocation rate Di, the ratio at which at least the power generator 12 and the storage battery 13 are used to provide adjustment capability for surplus power. Specifically, for each time slot Ti, the control unit 21 compares the cost of absorbing surplus power by reducing the power obtained by having the power generator 12 generate power for power sale with the cost of absorbing surplus power by reducing the power obtained by purchasing power to charge the storage battery 13, and sets the ratio at which the power generator 12 and the storage battery 13 are used to provide adjustment capability for surplus power.

[0057] More specifically, in step S904, the control unit 21 compares predicted values ​​of the power procurement cost when reducing the amount of power generated and selling to reduce the amount of power purchased to reduce the amount of power purchased when charging the storage battery 13 with the surplus power. If it is predicted that reducing the amount of power generated and selling will result in a lower power procurement cost than charging the storage battery 13 with the surplus power to reduce the amount of power purchased, in step S905 the control unit 21 prioritizes ensuring the power generation reduction margin of the generator 12 for the NA. Taking into consideration the amount to be ensured for the PA, if the power generation reduction margin of the generator 12 that can be ensured for the NA is insufficient, the control unit 21 also ensures the charging margin of the storage battery 13. For example, if half of the rated output of the generator 12 is ensured for the PA, only half of the rated output of the generator 12 can be ensured for the NA. If it is predicted that the cost of procuring electricity is lower by charging the surplus electricity to the storage battery 13 and reducing the amount of electricity purchased than by reducing the amount of electricity generated and reducing the amount of electricity sold, or if it is predicted that the costs of both are the same, then in step S906, the control unit 21 prioritizes reserving the charge reserve of the storage battery 13 for the NA. If the charge reserve of the storage battery 13 that can be reserved for the NA is insufficient, taking into consideration the amount to be reserved for the PA, the control unit 21 also reserves the power generation reduction reserve of the generator 12. For example, if half the rated capacity of the storage battery 13 is reserved for the PA, only half of the rated capacity of the storage battery 13 can be reserved for the NA.

[0058] As shown in Figure 4, the allocation results obtained by selecting the measures to secure adjustment reserve in ascending order of unit cost may affect the next process. For example, as shown in Figure 5, the allocation results may constrain the upper and lower limits of the SOC of the storage battery 13, the upper and lower limits of the output of the generator 12, or both. "SOC" is an abbreviation for state of charge. In the example shown in Figure 5, the sum of PA and NA during the planning period is smaller than the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13. Therefore, the difference obtained by subtracting the sum of PA and NA from the sum of the total power generation amount of the generator 12 and the total capacity of the storage battery 13 can be used for energy management. "Use for energy management" means "operating the equipment in accordance with the objective function." For example, when creating a plan with the objective function "minimizing power procurement costs," the storage battery 13 may store surplus solar power generation or purchase and store electricity when it is cheap and discharge it when the electricity purchase price is high. Assuming that the order of unit prices is "purchased electricity > generated electricity > discharge," the generator 12 may generate electricity if the above-mentioned discharge is insufficient when the purchased electricity unit price is high.

[0059] A modified example of the specific procedure for the process in step S9 will be described with reference to FIG.

[0060] The processing from step S911 to step S916 is executed for each time slot Ti included in the plurality of time slots P, that is, for each frame of the planning period.

[0061] In steps S911 to S913, for each time slot Ti, the control unit 21 references information on the corresponding carbon dioxide emission amount Ei and sets, as the allocation rate Di, at least the ratio at which the power generator 12 and the storage battery 13 are used to provide adjustment capability for a power shortage. Specifically, for each time slot Ti, the control unit 21 compares the amount of carbon dioxide emission when the power shortage is procured by supplying fuel to the power generator 12 and causing the power generator 12 to generate electricity with the amount of carbon dioxide emission when the power shortage is procured by supplying power obtained by purchasing electricity to the storage battery 13 and discharging the electricity into the storage battery 13, and sets the ratio at which the power generator 12 and the storage battery 13 are used to provide adjustment capability for a power shortage.

[0062] More specifically, in step S911, the control unit 21 compares predicted values ​​of carbon dioxide emissions when consuming fuel to generate electricity and when purchasing electricity from an external source and discharging it. To calculate the carbon dioxide emissions when generating electricity, for example, a method can be used in which the carbon dioxide emissions per kWh are calculated from the carbon dioxide emissions when fuel is burned and the power generation efficiency, and then multiplying the calculated amount by the amount of electricity generated. To calculate the carbon dioxide emissions when purchasing electricity and discharging it, for example, a method can be used in which the carbon dioxide emissions per kWh of purchased electricity, which is published by each electricity buyer, is multiplied by the amount of electricity purchased. If it is predicted that purchasing electricity from an external source and discharging it will result in fewer carbon dioxide emissions than consuming fuel to generate electricity, in step S912, the control unit 21 prioritizes reserving a discharge reserve capacity of the storage battery 13 for PA. Taking into account the amount to be reserved for NA, if the discharge reserve capacity of the storage battery 13 that can be reserved for PA is insufficient, the control unit 21 also reserves a power generation reserve capacity of the generator 12. If it is predicted that consuming fuel to generate electricity will result in less carbon dioxide emissions than purchasing electricity from an external source and discharging it, or that the carbon dioxide emissions will be the same, in step S913, the control unit 21 prioritizes reserving the power generation surplus of the generator 12 for PA. Taking into consideration the amount to be reserved for NA, the control unit 21 also reserves the discharge surplus of the storage battery 13 if the power generation surplus of the generator 12 that can be reserved for PA is insufficient.

[0063] In steps S914 to S916, the control unit 21 references information on the corresponding carbon dioxide emissions Ei for each time slot Ti and sets, as the allocation rate Di, the ratio at which at least the power generator 12 and the storage battery 13 are used to provide adjustment capability for surplus power. Specifically, the control unit 21 compares, for each time slot Ti, the amount of carbon dioxide emissions when absorbing surplus power by reducing the power obtained by having the power generator 12 generate power to sell it with the amount of carbon dioxide emissions when absorbing surplus power by reducing the power obtained by purchasing power to charge the storage battery 13, and sets the ratio at which the power generator 12 and the storage battery 13 are used to provide adjustment capability for surplus power.

[0064] More specifically, in step S914, the control unit 21 compares predicted values ​​of carbon dioxide emissions when reducing the amount of power generated and selling to reducing the amount of power purchased when charging the storage battery 13 with the surplus power. A method of calculating the amount of carbon dioxide emissions when selling power can be used, for example, by calculating the amount of carbon dioxide emissions per kWh when generating power and multiplying this amount by the amount of power sold. If it is predicted that reducing the amount of power generated and selling will result in fewer carbon dioxide emissions than charging the storage battery 13 with the surplus power and reducing the amount of power purchased, in step S915, the control unit 21 prioritizes reserving a power generation reduction capacity of the generator 12 for the NA. Taking into account the amount to be reserved for the PA, if the power generation reduction capacity of the generator 12 that can be reserved for the NA is insufficient, the control unit 21 also reserves a charging capacity reserve for the storage battery 13. If it is predicted that charging the storage battery 13 with the surplus power and reducing the amount of purchased power will result in fewer carbon dioxide emissions than reducing the amount of power generated and reducing the amount of power sold, or that both will be the same, then in step S916 the control unit 21 prioritizes reserving the charge reserve of the storage battery 13 for the NA. Taking into consideration the amount to be reserved for the PA, the control unit 21 also reserves the power generation reduction reserve of the generator 12 if the charge reserve of the storage battery 13 that can be reserved for the NA is insufficient.

[0065] The present disclosure is not limited to the above-described embodiments. For example, two or more blocks shown in the block diagrams may be integrated, or one block may be divided. Two or more steps shown in the flowcharts may be executed in parallel or in a different order, instead of being executed in chronological order as described, depending on the processing capabilities of the device executing each step, or as needed. Other modifications are possible within the scope of the present disclosure.

[0066] Some embodiments of the present disclosure will be described below as examples, however, it should be noted that the embodiments of the present disclosure are not limited to these. [Appendix 1] An allocation device having a control unit that acquires information regarding either the cost by time period or the carbon dioxide emissions by time period for each of multiple types of power sources used to provide adjustment power in multiple time periods, and that, for each time period included in the multiple time periods, refers to the acquired information, sets an allocation rate that is the ratio at which each of the multiple types of power sources is used to provide adjustment power, and outputs a set value of the allocation rate by time period. [Appendix 2] the plurality of types of power sources include a generator and a storage battery, The information on costs by time period includes information on fuel prices by time period and information on electricity purchase prices by time period, The control unit of the distribution device described in Appendix 1 sets the allocation rate as the ratio at which at least the generator and the storage battery are used to provide adjustment power for power shortages by referring to information on the corresponding fuel price and information on the corresponding electricity purchase price for each time period. [Appendix 3] The control unit compares, for each time period, the cost of procuring the shortage of power by supplying fuel to the generator and causing the generator to generate electricity with the cost of procuring the shortage of power by supplying electricity obtained by purchasing electricity to the storage battery and discharging it into the storage battery, and sets the ratio at which the generator and the storage battery are each used to provide adjustment power for the shortage of power. [Appendix 4] the plurality of types of power sources include a generator and a storage battery, The information on costs by time period includes information on the electricity selling price by time period and information on the electricity purchasing price by time period, The control unit is configured to set the allocation rate as the ratio at which at least the generator and the storage battery are used to provide adjustment power for surplus power by referring to information on the corresponding electricity selling price and information on the corresponding electricity purchasing price for each time period. [Appendix 5] The control unit compares, for each time period, the cost of absorbing the surplus power by reducing the power generated by the generator for sale with the cost of absorbing the surplus power by reducing the power purchased to charge the storage battery, and sets the ratio at which the generator and the storage battery are used to provide adjustment power for the surplus power. [Appendix 6] the plurality of types of power sources include a generator and a storage battery, The control unit is configured to set the allocation rate as the ratio at which at least the generator and the storage battery are used to provide adjustment power for power shortages by referring to information about corresponding carbon dioxide emissions for each time period. [Appendix 7] The control unit compares, for each time period, the amount of carbon dioxide emissions resulting from supplying fuel to the generator and causing the generator to generate electricity to cover the power shortage with the amount of carbon dioxide emissions resulting from supplying purchased electricity to the storage battery and discharging it into the battery to cover the power shortage, and sets the ratio at which the generator and the storage battery are used to provide adjustment power for the power shortage. [Appendix 8] the plurality of types of power sources include a generator and a storage battery, The control unit is configured to set the allocation rate as the ratio at which at least the generator and the storage battery are used to provide adjustment power for surplus power by referring to information about the corresponding carbon dioxide emissions for each time period. [Appendix 9] The control unit, for each time period, compares the amount of carbon dioxide emissions when the surplus power is absorbed by reducing the power generated by the generator to be sold with the amount of carbon dioxide emissions when the surplus power is absorbed by reducing the power purchased to charge the storage battery, and sets the ratio at which the generator and the storage battery are used to provide adjustment power for the surplus power. [Appendix 10] 10. An allocation device according to any one of claims 1 to 9; a power control device that controls the plurality of types of power sources in accordance with a set value of the allocation rate for each time period output from the allocation device; A power control system comprising: [Appendix 11] Acquiring, by a distribution device, information on either the cost by time period or the carbon dioxide emission amount by time period for each of a plurality of types of power sources used to provide adjustment power in a plurality of time periods; For each time period included in the plurality of time periods, by referring to the acquired information, the allocation device sets a ratio at which each of the plurality of types of power sources is used to provide adjustment power as an allocation rate; outputting a set value of the allocation rate for each time period from the allocation device; Allocation methods, including: [Appendix 12] Acquiring information on either a cost by time period or a carbon dioxide emission by time period for each of a plurality of types of power sources used to provide adjustment power in a plurality of time periods; For each time period included in the plurality of time periods, refer to the acquired information and set a ratio at which each of the plurality of types of power sources is used to provide adjustment power as an allocation rate; Outputting the set value of the allocation rate by time period A distribution program that causes a computer to perform operations including: [Explanation of symbols]

[0067] 10 Power Control System 11 Power supply 12. Generator 13 Storage battery 20 Distribution Device 21 Control Unit 22 Memory section 23 Communications Department 24 Fuel Prices 25 Power purchase price 26 Electricity selling price 30 Power control device 40 Network 50,51,52 Necessary adjustment force

Claims

1. An allocation device having a control unit that acquires information regarding either the cost by time period or the carbon dioxide emissions by time period for each of multiple types of power sources used to provide adjustment power in multiple time periods, and that, for each time period included in the multiple time periods, refers to the acquired information, sets an allocation rate that is the ratio at which each of the multiple types of power sources is used to provide adjustment power, and outputs a set value of the allocation rate by time period.

2. the plurality of types of power sources include a generator and a storage battery, The information on costs by time period includes information on fuel prices by time period and information on electricity purchase prices by time period, The distribution device described in claim 1, wherein the control unit, for each time period, refers to information regarding the corresponding fuel price and information regarding the corresponding electricity purchase price, and sets the distribution rate as the ratio at which at least the generator and the storage battery are used to provide adjustment power for power shortages.

3. 3. The distribution device according to claim 2, wherein the control unit compares, for each time period, the cost of procuring the shortage of power by supplying fuel to the generator and causing the generator to generate electricity with the cost of procuring the shortage of power by supplying electricity obtained by purchasing electricity to the storage battery and discharging it into the storage battery, and sets the ratio at which the generator and the storage battery are each used to provide adjustment power for the shortage of power.

4. the plurality of types of power sources include a generator and a storage battery, The information on costs by time period includes information on the electricity selling price by time period and information on the electricity purchasing price by time period, The distribution device described in claim 1, wherein the control unit, for each time period, refers to information regarding the corresponding electricity selling price and information regarding the corresponding electricity purchasing price, and sets the distribution rate as the ratio at which at least the generator and the storage battery are used to provide adjustment power for surplus electricity.

5. 5. The distribution device of claim 4, wherein the control unit compares, for each time period, the cost of absorbing the surplus power by reducing the power generated by the generator for sale with the cost of absorbing the surplus power by reducing the power purchased to charge the storage battery, and sets the ratio at which the generator and the storage battery are used to provide adjustment power for the surplus power.

6. the plurality of types of power sources include a generator and a storage battery, The distribution device according to claim 1, wherein the control unit, for each time period, refers to information on the corresponding carbon dioxide emissions amount and sets the distribution rate as the ratio at which at least the generator and the storage battery are used to provide adjustment power for power shortages.

7. 7. The distribution device according to claim 6, wherein the control unit compares, for each time period, the amount of carbon dioxide emissions that would result from supplying fuel to the generator and causing the generator to generate electricity to cover the power shortage with the amount of carbon dioxide emissions that would result from supplying electricity obtained by purchasing power to the storage battery and discharging it into the storage battery to cover the power shortage, and sets a ratio at which the generator and the storage battery are each used to provide adjustment power for the power shortage.

8. the plurality of types of power sources include a generator and a storage battery, The distribution device according to claim 1, wherein the control unit, for each time period, refers to information on the corresponding carbon dioxide emissions and sets the distribution rate as the ratio at which at least the generator and the storage battery are used to provide adjustment power for surplus electricity.

9. 9. The distribution device according to claim 8, wherein the control unit compares, for each time period, the amount of carbon dioxide emissions that would result from absorbing the surplus electricity by reducing the amount of electricity generated by the generator to sell it with the amount of carbon dioxide emissions that would result from absorbing the surplus electricity by reducing the amount of electricity purchased to charge the storage battery, and sets the ratio at which the generator and the storage battery are used to provide adjustment power for the surplus electricity.

10. The distribution device according to any one of claims 1 to 9; a power control device that controls the plurality of types of power sources in accordance with a set value of the allocation rate for each time period output from the allocation device; A power control system comprising:

11. Acquiring, by a distribution device, information on either the cost by time period or the carbon dioxide emission amount by time period for each of a plurality of types of power sources used to provide adjustment power in a plurality of time periods; For each time period included in the plurality of time periods, by referring to the acquired information, the allocation device sets a ratio at which each of the plurality of types of power sources is used to provide adjustment power as an allocation rate; outputting a set value of the allocation rate for each time period from the allocation device; Allocation methods, including:

12. Acquiring information on either a cost by time period or a carbon dioxide emission by time period for each of a plurality of types of power sources used to provide adjustment power in a plurality of time periods; For each time period included in the plurality of time periods, refer to the acquired information and set a ratio at which each of the plurality of types of power sources is used to provide adjustment power as an allocation rate; Outputting the set value of the allocation rate by time period A distribution program that causes a computer to perform operations including:

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