Power bidding support device, method for supporting power bidding, and power bidding support program

Abstract

To provide a power bidding support device, a method for supporting power bidding, and a program capable of enabling an operator of a grid-connected storage battery to execute a purchase bid for securing electric power that meets the contracted conditions, when the provision of bid-available regulating capacity at an appropriate price is contracted in regulating-capacity transactions in the supply-demand adjustment market.SOLUTION: A power bidding support device 100 for supporting power bidding based on the state of a grid-connected storage battery, includes: first bidding-condition generation means 120 for generating sell-bid condition information for transactions of first tertiary balancing capacity in the supply-demand adjustment market of a power supply-demand balancing capacity exchange B10; and second bidding-condition generation means 130 for generating buy-bid condition information in the spot market of the Japan Electric Power Exchange C10 on the basis of contracted results in the supply-demand adjustment market.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an electricity bidding support device, an electricity bidding support method, and an electricity bidding support program that support electricity bidding based on the status of grid storage batteries, and in particular to an electricity bidding support device, an electricity bidding support method, and an electricity bidding support program that support electricity bidding for the spot market of the Japan Electric Power Exchange and electricity bidding for the first tertiary adjustment capacity in the supply and demand adjustment market of the Electric Power Adjustment Capacity Exchange, where trading began in April 2022. [Background technology]

[0002] With the full liberalization of the electricity retail market, a planned value simultaneous balancing system was introduced in April 2016. This system of simultaneous balancing of planned values ​​is a system in which the power generation plan prepared in advance by a power generation contractor (e.g., a power generation company) who is the contracting party for a power generation adjustment supply contract is matched with the power generation contractor's actual power generation performance in units of a management time (e.g., 30 minutes), and the demand plan (electricity demand plan) prepared in advance by a demand contractor (e.g., a retail electricity supplier) who is the contracting party for a transmission supply contract is matched with the demand contractor's actual demand performance in units of 30 minutes. Furthermore, under the planned value simultaneous balancing system, general electricity transmission and distribution companies that receive power generation plans and demand plans play an extremely important role in ensuring the adjustment power to ultimately match supply and demand. Adjustment capacity (ΔkW) refers to the power used to "secure in advance power sources, etc. with the necessary capacity for each time period at the time of actual supply and demand, in a state where output can be adjusted," and the unit of power handled is, for example, kW (kilowatt).

[0003] A general electricity transmission and distribution business operator is one of the types of electric power business operators defined in Japan's Electricity Business Act, and is an entity that has been granted permission by the Minister of Economy, Trade and Industry to operate a general electricity transmission and distribution business. The Minister of Economy, Trade and Industry grants permission for general electricity transmission and distribution businesses for each of Japan's 10 supply areas, and currently there is one general electricity transmission and distribution business operator for each supply area.

[0004] In order to procure and operate wide-area adjustment capacity beyond supply areas and to reduce the cost of procuring adjustment capacity by stimulating competition through market principles and increasing transparency, a supply and demand adjustment market was opened at the Electricity Supply and Demand Adjustment Capacity Exchange in April 2021, and trading of adjustment capacity began (see, for example, non-patent document 1).

[0005] In recent years, it has also been hoped that grid storage batteries, by taking advantage of their characteristics (instantaneous responsiveness, bidirectional output, etc.), will be used to avoid imbalances in renewable energy, provide adjustment power, and alleviate grid congestion. It is envisioned that the business model for grid storage batteries will allow investment recovery by combining revenues from the supply and demand adjustment market, wholesale electricity trading market, etc., i.e., purchasing electricity when the electricity price is low and storing it in the grid storage batteries, and selling the electricity when the electricity price is high and discharging it from the grid storage batteries (see, for example, Non-Patent Document 2). [Prior art documents] [Patent documents]

[0006] [Non-Patent Document 1] "About the Supply and Demand Adjustment Market" (July 31, 2023, Agency for Natural Resources and Energy) https: / / www.meti.go.jp / shingikai / enecho / denryoku_gas / denryoku_gas / seido_kento / pdf / 083_03_00.pdf [Non-patent document 2] "Initiatives regarding aggregation business and grid storage batteries" (January 19, 2022, Agency for Natural Resources and Energy) https: / / www.meti.go.jp / shingikai / energy_environment / energy_resource / pdf / 017_03_00.pdf Summary of the Invention [Problem to be solved by the invention]

[0007] However, since grid storage batteries have a full charge capacity, they cannot be charged or discharged beyond that capacity. In order to maximize the profits from utilizing grid storage batteries, it is necessary to bid in various electricity markets taking into account the capacity of the grid storage batteries.

[0008] The present invention has been made in consideration of the above circumstances, and provides an electricity bidding support device, an electricity bidding support method, and an electricity bidding support program that enable an operator of a grid storage battery to realize a purchase bid that secures electricity that meets the agreement conditions when an agreement is reached to provide adjustment power at a favorable price in adjustment power trading in a supply and demand adjustment market. [Means for solving the problem]

[0009] The invention of claim 1 is an electricity bidding support device that supports electricity bidding based on the status of a grid storage battery, and comprises a first bidding condition generation means that generates sell bid condition information for transactions of first tertiary adjustment capacity in the supply and demand adjustment market of the Electric Power Supply and Demand Adjustment Capacity Exchange, and a second bidding condition generation means that generates buy bid condition information for the spot market of the Japan Electric Power Exchange based on the results of the agreement in the supply and demand adjustment market, wherein the sell bid condition information includes a bidding target block selected as the bidding target from among blocks that are time slots defined in the supply and demand adjustment market, the biddable adjustment capacity of the grid storage battery in the bidding target block, and the selling price for the bidding target block, and the buy bid condition information includes a bidding target block selected as the bidding target from among blocks that are time slots defined in the spot market, the amount of charge to the grid storage battery in the bidding target block, and the electricity purchase price for the bidding target block, thereby solving the above-mentioned problem.

[0010] The invention of claim 2 further solves the above-mentioned problem by, in addition to the configuration of the electricity bidding support device described in claim 1, the first bidding condition generation means including a block selection unit that selects bidding target blocks from among the blocks partitioned in the supply and demand adjustment market, and the block selection unit selecting the bidding target blocks so as to alternate between the bidding target blocks and non-bidding target blocks that do not provide biddable adjustment capacity by the grid storage batteries.

[0011] The invention of claim 3 further solves the above-mentioned problem by including, in addition to the configuration of the electricity bidding support device described in claim 1 or claim 2, a battery status obtaining means for obtaining the status of the grid storage battery, wherein the first bidding condition generation means includes an adjustment capacity calculation unit for calculating the biddable adjustment capacity of the grid storage battery, and the adjustment capacity calculation unit determines the smaller of the maximum output of the grid storage battery in the bidding target block or the remaining chargeable / dischargeable capacity of the grid storage battery obtained by the battery status obtaining means divided by the length of the block as the biddable adjustment capacity of the grid storage battery.

[0012] The invention of claim 4 further solves the above-mentioned problem by, in addition to the configuration of the electricity bidding support device described in claim 1, the first bidding condition generation means being equipped with a contract result acquisition unit that acquires past contract results of the first tertiary control capacity, and a selling price calculation unit that calculates the selling price based on the past contract results acquired by the contract result acquisition unit.

[0013] The invention of claim 5 further solves the above-mentioned problem by comprising, in addition to the configuration of the electricity bidding support device described in claim 1, a battery status acquisition means for acquiring the status of the grid storage battery, and the second bidding condition generation means comprising a total charge amount calculation unit for calculating the total charge amount to the grid storage battery in the block immediately preceding the agreed block from the biddingable adjustment capacity of the grid storage battery in the agreed block, the length of the block, and the remaining charge amount of the grid storage battery acquired by the battery status acquisition means, and a frame selection unit for calculating the number of charging frames required for the grid storage battery to charge the total charge amount in the block immediately preceding the agreed block, and selecting the frame to be bid.

[0014] The invention of claim 6 is an electricity bidding support method for supporting electricity bidding based on the status of a grid storage battery, comprising: a first bidding condition generation step of causing a computer to generate sell bid condition information for transactions of first tertiary adjustment capacity in the supply and demand adjustment market of an electricity supply and demand adjustment capacity exchange; and a second bidding condition generation step of causing the computer to generate buy bid condition information for the spot market of the Japan Electric Power Exchange based on the results of the agreement in the supply and demand adjustment market, wherein the sell bid condition information includes a bidding target block selected as a bidding target from among blocks that are time slots defined in the supply and demand adjustment capacity, the biddable adjustment capacity of the grid storage battery in the bidding target block, and the selling price for the bidding target block, and the buy bid condition information includes a bidding target block selected as a bidding target from among blocks that are time slots defined in the spot market, the amount of charge to the grid storage battery in the bidding target block, and the electricity purchase price for the bidding target block, thereby solving the above-mentioned problem.

[0015] The invention of claim 7 is a computer-readable electricity bidding support program for causing a computer that supports electricity bidding based on the status of a grid storage battery to execute a first bidding conditions generation step of generating sell bid condition information for transactions of first tertiary adjustment capacity in the supply and demand adjustment market of the Electric Power Adjustment Capacity Exchange, and a second bidding conditions generation step of generating buy bid condition information for the spot market of the Japan Electric Power Exchange based on the results of the agreement in the supply and demand adjustment market, wherein the sell bid condition information includes a bidding target block selected as a bidding target from among blocks that are time slots defined in the supply and demand adjustment market, the biddable adjustment capacity of the grid storage battery in the bidding target block, and the selling price for the bidding target block, and the buy bid condition information includes a bidding target block selected as a bidding target from among blocks that are time slots defined in the spot market, the amount of charge to the grid storage battery in the bidding target block, and the electricity purchase price for the bidding target block, thereby solving the above-mentioned problem. [Effects of the Invention]

[0016] According to the electricity bidding support device of the invention of claim 1, it is equipped with a first bidding condition generation means for generating sell bidding condition information for transactions of first tertiary adjustment capacity in the supply and demand adjustment market of the Electric Power Supply and Demand Adjustment Capacity Exchange, and a second bidding condition generation means for generating buy bidding condition information for the spot market of the Japan Electric Power Exchange based on the agreement results in the supply and demand adjustment market. This makes it possible to generate buy bidding condition information for the spot market that can reliably provide biddable adjustment capacity to the agreement party when a bid is made favorably in the supply and demand adjustment market within the capacity of the grid storage battery.Therefore, when an agreement is made to provide biddable adjustment capacity at a favorable price in transactions of the first tertiary adjustment capacity in the supply and demand adjustment market, the operator of the grid storage battery can make a buy bid in the spot market to secure electricity that meets the agreement conditions.

[0017] According to the electricity bidding support device of the invention of claim 2, in addition to the effects achieved by the electricity bidding support device of the invention of claim 1, the block selection unit selects bidding target blocks so that bidding target blocks and non-bidding target blocks that do not provide biddable adjustment capacity from the system storage batteries are alternately arranged, so that in the block next to the agreed block where biddable adjustment capacity is provided by the system storage batteries, biddable adjustment capacity is not provided by the system storage batteries, and the block next to the agreed block can be allocated to charging the system storage batteries, thereby avoiding a situation where biddable adjustment capacity is insufficient in the agreed block.

[0018] According to the electricity bidding support device of the invention of claim 3, in addition to the effects achieved by the electricity bidding support device of the invention of claim 1 or claim 2, the adjustment capacity calculation unit of the first bidding conditions generation means sets the biddable adjustment capacity of the grid storage battery to the smaller of the maximum output of the grid storage battery in the block to be bidded or the remaining chargeable / dischargeable capacity of the grid storage battery obtained by the storage battery status obtaining means divided by the length of the block, thereby setting an appropriate biddable adjustment capacity that matches the actual capacity of the grid storage battery in the sell bidding conditions information, and thereby enabling the holder of the grid storage battery to increase the profits from providing biddable adjustment capacity.

[0019] According to the electricity bidding support device of the invention of claim 4, in addition to the effects achieved by the electricity bidding support device of the invention of claim 1, the first bidding condition generation means is equipped with an agreement result acquisition unit that acquires past agreement results of the first tertiary adjustment capacity, and an selling price calculation unit that calculates the selling price based on the past agreement results acquired by the agreement result acquisition unit, so that the selling price is calculated taking into account the past agreement results, making it possible to provide biddable adjustment capacity that is more in line with the actual buying and selling situation.

[0020] According to the electricity bidding support device of the invention of claim 5, in addition to the effects achieved by the electricity bidding support device of the invention of claim 1, it is equipped with a frame selection unit that calculates the number of charging frames required for the system storage battery to charge the total charge amount in the block immediately before the agreed block and selects frames to be bidded.As a result, frames to be bidded that match the actual capacity of the system storage battery are set in the purchase bidding condition information, so that when an agreement is made to provide biddable adjustment capacity at a favorable price in the transaction of the first tertiary adjustment capacity in the supply and demand adjustment market, it is possible to reliably supply electricity that matches the agreement conditions to the system storage battery.

[0021] According to the electricity bidding support method of the invention of claim 6, there are provided a first bidding condition generation step of generating sell bidding condition information for the transaction of first tertiary adjustment capacity in the supply and demand adjustment market of the Electric Power Supply and Demand Adjustment Capacity Exchange, and a second bidding condition generation step of generating buy bidding condition information for the spot market of the Japan Electric Power Exchange based on the agreement results in the supply and demand adjustment market. This makes it possible to generate buy bidding condition information for the spot market that can reliably provide biddable adjustment capacity to the agreement party when a bid is made favorably in the supply and demand adjustment market within the capacity of the grid storage battery.Therefore, when an agreement is made to provide biddable adjustment capacity at a favorable price in the transaction of first tertiary adjustment capacity in the supply and demand adjustment market, the operator of the grid storage battery can make a buy bid in the spot market to secure electricity that meets the agreement conditions.

[0022] According to the electricity bidding support program of the invention of claim 7, a computer is caused to execute a first bidding condition generation step of generating sell bidding condition information for a transaction of first tertiary adjustment capacity in the supply and demand adjustment market of the Electric Power Supply and Demand Adjustment Capacity Exchange, and a second bidding condition generation step of generating buy bidding condition information for the spot market of the Japan Electric Power Exchange based on the agreement results in the supply and demand adjustment market. This makes it possible to generate buy bidding condition information for the spot market that can reliably provide biddable adjustment capacity to the agreement party when a successful bid is made in the electricity supply and demand adjustment market favorably within the capacity of the grid storage battery.Therefore, when an agreement is made to provide biddable adjustment capacity at a favorable price in a transaction of first tertiary adjustment capacity in the supply and demand adjustment market, the operator of the grid storage battery can make a buy bid in the spot market to secure electricity that meets the agreement conditions. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a diagram illustrating a network configuration to which an electricity bid support device and the like according to an embodiment of the present invention are connected. [Figure 2] 1 is a hardware configuration diagram of an electricity bidding support device according to an embodiment of the present invention. [Figure 3] 4 is a flowchart illustrating the operation of the electricity bidding support device according to one embodiment of the present invention. [Figure 4] FIG. 1 is a diagram showing a specific example of electricity trading based on the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, an electric power bid support device 100, an electric power bid support method, and an electric power bid support program according to an embodiment of the present invention will be described with reference to the drawings.

[0025] <1. About the Electric Power Supply and Demand Adjustment Power Exchange and the Japan Electric Power Exchange> First, the Electric Power Supply and Demand Adjustment Power Exchange and the Japan Electric Power Exchange, which operate the electricity market related to the present invention, will be described.

[0026] <1.1. About the Electric Power Supply and Demand Adjustment Power Exchange> The Electric Power Supply and Demand Adjustment Capacity Exchange was jointly established by nine general electricity transmission and distribution companies and operates the above-mentioned supply and demand adjustment market.

[0027] In this supply and demand adjustment market, adjustment power in product blocks, which are created by dividing a day (24 hours) into specified time spans (3 hours), is traded as individual products. In other words, in the supply and demand adjustment market, a day (24 hours) is divided into eight time periods (blocks) of three hours each and managed accordingly. Therefore, in this embodiment, the first block of the day from midnight to 3 am is called "Block 1," and the sixth block of the day from 3 pm to 6 pm is called "Block 6." At the time of filing the application for this invention, one block is defined as three hours and one day is divided into eight blocks, but the length of a block can be changed depending on changes in market management policies, etc., and the length of one block is not limited to three hours.

[0028] In addition, products handled in the supply and demand adjustment market include tertiary adjustment capacity [2] (where [2] represents the number 2 in a circle), which was introduced in April 2021, and tertiary adjustment capacity [1] (where [1] represents the number 1 in a circle), which was introduced in April 2022.

[0029] Tertiary adjustment capacity [1] is the adjustment capacity that responds to the difference between supply and demand caused by demand forecast errors and renewable energy output forecast errors that occur after gate closure (one hour before actual supply and demand), and power outages caused by power sources going out due to unexpected problems, etc. Tertiary control capacity [2] is the control capacity to respond to forecast errors in renewable energy.

[0030] <1.2. About the Japan Electric Power Exchange (JEPX)> The Japan Electric Power Exchange was established in 2003 and is an exchange that acts as an intermediary for spot and futures trading of wholesale electricity in Japan. The Japan Electric Power Exchange has opened a day-ahead market (spot market) where electricity can be bought and sold between businesses looking to sell their electricity and businesses looking to procure electricity to meet their electricity demand.

[0031] In the spot market, electricity to be generated or sold the next day is bid on the day before and the transaction is completed. In this spot market, electricity is traded as individual products in 48 units, which divide a day into electricity measurement units (units: 0 to 30 minutes and 30 to 60 minutes per hour). In other words, in the spot market, a day (24 hours) is divided into 48 time periods (frames) of 0.5 hours (30 minutes) each and managed. Therefore, in this embodiment, the first frame of the day from midnight to midnight is called "frame 1," and the last frame of the day from 11:30 pm to midnight the next day is called "frame 48."

[0032] <2. Overview of transactions based on the present invention> The present invention is primarily implemented by a specified wholesale supplier (aggregator) that has been entrusted by the owners of grid storage batteries with the operation (selling and purchasing electricity, etc.) of the grid storage batteries they own.

[0033] In general, aggregators are expected to maximize the economic benefits for owners of grid storage batteries. Therefore, the applicant of the present invention, who is also an aggregator, has found that by implementing the present invention, the economic benefits of the owners of grid storage batteries can be maximized by making a transaction of tertiary adjustment capacity [1] in the supply and demand adjustment market of the Electric Power Supply and Demand Adjustment Capacity Exchange and then securing electricity that meets the conditions of that transaction at the Japan Wholesale Electric Power Exchange. That is, the present invention supports aggregators' bidding on the supply and demand balancing market of the Electric Power Supply and Demand Adjustment Power Exchange and also supports aggregators' bidding on the spot market of the Japan Electric Power Exchange.

[0034] <3. Overview of the network to which the electricity bidding support device, etc. is connected and the grid storage battery> Next, an overview of the entire network to which the power bid support device 100 according to one embodiment of the present invention is connected will be described with reference to FIG. FIG. 1 is a diagram showing the configuration of a network to which an electricity bid support device 100 according to one embodiment of the present invention is connected.

[0035] As shown in FIG. 1, the electricity bidding support device 100 is connected to a system storage battery A10, a supply and demand adjustment market system B11 of the Electric Power Supply and Demand Adjustment Power Exchange B10, and a spot market system C11 of the Japan Electric Power Exchange C10 via a communication network D10. Therefore, in this embodiment, the electricity bidding support device 100 obtains various information such as the results of electricity bids in the supply and demand adjustment market of the electricity supply and demand adjustment power exchange B10 from the supply and demand adjustment market system B11 within the electricity supply and demand adjustment power exchange B10, but the various information in the supply and demand adjustment market may be obtained from sources other than this. Similarly, the electricity bidding support device 100 obtains various information on the spot market of the Japan Electric Power Exchange C10 from a spot market system C11 within the Japan Electric Power Exchange C10, but the source of the various information on the spot market may be other than this.

[0036] In this embodiment, the power bidding support device 100 handles only one system storage battery A10, but in reality, there are many other system storage batteries, and the aggregator manages and adjusts the buying and selling of electricity from the many system storage batteries individually or collectively.

[0037] <4. Electricity bidding support device 100> The power bidding support device 100 is a device that supports power bidding based on the status of the system storage battery A10, and is used by aggregators and others who have been entrusted with the operation of the system storage battery A10 by the owner of the system storage battery A10.

[0038] 4.1. Hardware Configuration of the Electricity Bidding Support Device 100 First, the hardware configuration of the power bid support device 100 according to one embodiment of the present invention will be described with reference to FIG. 2, which is a hardware configuration diagram of the power bid support device 100. In Figures 1 and 2, the electricity bidding support device 100 is realized as a single device, but this is not limited to this and may be realized by one or more computers, or may be configured to be realized by one or more servers.

[0039] The electricity bidding support device 100 comprises a processor 101, a main memory device 102, an auxiliary memory device 103, and an input / output interface 104, which are connected via a bus 105 that is a data transmission path between the devices. Furthermore, the input / output interface 104 is connected to a network interface 106, an input unit 107, and an output unit .

[0040] The processor 101 is realized by a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit), and executes various processes according to programs stored in a main storage device 102 and an auxiliary storage device 103 . The main memory device 102 is configured with a static random access memory (SRAM), a dynamic RAM (DRAM), a flash memory, or the like, and temporarily stores data necessary for the power bidding support device 100 to perform calculation processing. The auxiliary storage device 103 is realized by a removable medium such as a hard disk drive (HDD), a solid state drive (SSD), or a memory card, or a read only memory (ROM), and has a recording medium.

[0041] The network interface 106 communicates with other terminals, systems, etc. via a communication network D10 including the Internet. The input unit 107 is composed of a keyboard, a mouse, etc., and accepts input of various information. The output unit 108 is composed of a display, a speaker, etc., and outputs various information as text, images, sounds, etc.

[0042] <4.2. Functional means of the electricity bidding support device 100> In this embodiment, the electricity bidding support device 100 includes a storage battery state obtaining means 110, a first bidding condition generating means 120, and a second bidding condition generating means .

[0043] <4.2.1. Battery Status Acquisition Means 110> The storage battery state obtaining means 110 obtains the state of the system storage battery A10 at a predetermined timing. The "state of the grid storage battery A10" is information that includes at least the maximum output [MW], maximum input [MW], initial full charge capacity (also called "rated power capacity") [MWh], charging rate (State of Charge; SoC) [%], and health (State of Health; SoH) [%] of the grid storage battery A10. The battery status obtaining means 110 may obtain information regarding the status of the system battery A10 directly from a meter attached to the system battery A10, or may store information regarding the storage status of the system battery A10 directly from the owner of the system battery A10 or in a server (not shown) of the administrator of the system battery A10 entrusted by the owner of the system battery A10, and the battery status obtaining means 110 may obtain the information from that server.

[0044] <4.2.2. First bidding conditions generating means 120> The first bidding conditions generating means 120 generates selling bidding conditions information for trading of the first tertiary control capacity (the above-mentioned "tertiary control capacity [1]") in the supply and demand adjustment market of the electricity supply and demand adjustment capacity exchange B10.

[0045] More specifically, as shown in FIG. 1, the first bidding condition generation means 120 includes a block selection unit 121, an adjustment power calculation unit 122, a contract result acquisition unit 123, a selling price calculation unit 124, and a selling bidding condition information generation unit 125.

[0046] The block selection unit 121 selects a block to be bid from among the blocks (block 1 to block 8 at the time of filing this application) divided in the supply and demand adjustment market. Specifically, the block selection unit 121 selects bidding target blocks so that bidding target blocks and non-bidding target blocks that do not provide biddable adjustment power from the grid storage battery A10 are alternately provided.

[0047] By configuring in this way, the power bidding support device 100 can allocate the block next to the agreed block for charging the system storage battery 21 without providing biddable adjustment capacity from the system storage battery A10 in the block next to the agreed block for providing biddable adjustment capacity from the system storage battery A10. Therefore, it is possible to avoid a situation in which the biddable adjustment power is insufficient in the agreed block.

[0048] The adjustment capacity calculation unit 122 calculates the bidding available adjustment capacity of the system storage battery A10. Specifically, the adjustment capacity calculation unit 122 determines the smaller of (1) the maximum output [MW] of the system storage battery 21 in the block being bid, or (2) the remaining chargeable / dischargeable capacity [MWh] of the system storage battery 21 obtained by the storage battery status obtaining means 11 (initial full charge capacity multiplied by the health status, i.e., rated power capacity taking into account capacity reduction due to aging) divided by the length of the block (3 hours) [MW] as the biddable adjustment capacity of the system storage battery A10 constituting the selling bid condition information. By adopting such a configuration, it becomes possible to set an appropriate biddable adjustment capacity that matches the actual capacity of the system storage battery A10 in the sell bidding condition information, thereby increasing the profits for the holder of the system storage battery A10 from providing biddable adjustment capacity.

[0049] The contract result obtaining unit 123 obtains past contract results of the first tertiary adjustment reserve (for example, contract rates on the day before the scheduled bidding date or the previous week in the supply and demand adjustment market) from the supply and demand adjustment market system B11.

[0050] The selling price calculation unit 124 calculates the selling price based on the past contract results obtained by the contract result obtaining unit 123. Specifically, the selling price calculation unit 124 determines the selling price based on the contract rate of the previous day or week. By configuring the agreement result acquisition unit 123 and the selling price calculation unit 124 in this manner, the selling price is calculated taking into account past agreement results, making it possible to provide bidding adjustment power that is more in line with the actual buying and selling situation.

[0051] The selling bid condition information generating unit 125 generates selling bid condition information from the results of processing by each unit of the first bid condition generating means 120 described above. That is, the selling bid condition information generated by the selling bid condition information generating unit 125 includes at least the following three pieces of information. (1) Information on the bidding blocks selected for bidding out of eight blocks in a day in the supply and demand adjustment market (2) Information on the bidding-available adjustment capacity (ΔkW) of the grid storage battery A10 in each bidding block (3) Information on the selling price [yen / kW] for each bidding block

[0052] <4.2.3. Second bidding conditions generating means 130> The second bidding conditions generating means 130 generates information on buying bidding conditions in the spot market of the Japan Electric Power Exchange C10 based on the contract results in the balancing market of the Electric Power Balance Capacity Exchange B10.

[0053] More specifically, as shown in FIG. 1, the second bidding condition generating means 130 includes a total charge amount calculating unit 131, a unit selecting unit 132, a power purchase price setting unit 133, and a purchase bidding condition information generating unit 134.

[0054] The total charge amount calculation unit 131 calculates the total charge amount T (= A × LP) [kWh] to the system storage battery A10 in the block immediately before the agreed block from (1) the biddable adjustment capacity A [kW] of the system storage battery A10 in the agreed block, (2) the length L [h] of the block, and (3) the current remaining charge amount P [kWh] of the system storage battery A10 obtained by the storage battery status obtaining means 110 (the initial full charge capacity multiplied by the health degree and the charging rate).

[0055] The frame selection unit 132 calculates the number of charging frames required for the system storage battery A10 to charge the total charge amount T [kWh] in the block immediately before the agreed block, and selects frames to be bid. Specifically, the frame selection unit 132 selects frames to be bid on by going back from the last frame immediately before the agreed block by the number of frames calculated by dividing the total charge amount T [kWh] by the maximum input [kW x 0.5] per frame (0.5 hours) of the system storage battery A10.

[0056] The power purchase price setting unit 133 sets the power purchase price [yen / kWh]. Specifically, the electricity purchase price setting unit 133 may determine the price based on past contract rates, as in the case of determining the selling price, or may set the price higher than the past contract results when there is a strong demand for electricity purchases.

[0057] The buying bid condition information generating unit 134 generates selling bid condition information from the state of the system storage battery A10 acquired by the storage battery state acquiring means 110 and the results of processing by each unit of the second bid condition generating means 130 described above. That is, the buying bid condition information generated by the buying bid condition information generating unit 134 includes at least the following three pieces of information. (1) Information on the bidding slots selected for bidding from among the 48 slots available in the spot market each day (2) Information on the amount of charge to the system storage battery A10 in the bid target block (maximum input of the system storage battery A10 obtained by the storage battery status obtaining means 110) (3) Information on the electricity purchase price [yen / kW] for the units subject to bidding

[0058] In this way, the second bidding condition generation means 130 calculates the number of charging frames required for the system storage battery 21 to charge the total charge amount in the block immediately before the agreed block and selects the frame to be bid, so that the frame to be bid that matches the actual capacity of the system storage battery A10 is set in the purchase bidding condition information. Therefore, when a contract is reached to provide biddable adjustment power at a favorable price in the transaction of the first tertiary adjustment power in the supply and demand adjustment market, it is possible to reliably supply power that meets the contract conditions to the system storage battery A10.

[0059] As described above, the electricity bidding support device 100 of this embodiment has a configuration including a first bidding condition generation means 120 that generates selling bidding condition information for transactions of first tertiary adjustment capacity in the supply and demand adjustment market of the Electric Power Supply and Demand Adjustment Capacity Exchange B10, and a second bidding condition generation means 130 that generates buying bidding condition information in the spot market of the Japan Electric Power Exchange C10 based on the results of the agreement in the supply and demand adjustment market.

[0060] With the above-described configuration, the electricity bidding support device 100 can generate purchase bidding condition information for the spot market of the Japan Electric Power Exchange C10, which can reliably provide biddable adjustment power to the contracting party if a successful bid is made in the supply and demand adjustment market of the Electric Power Supply and Demand Adjustment Power Exchange B10 within the capacity of the system storage battery A10. This means that when an agreement is reached to provide biddable adjustment power at a favorable price in the transaction of the first tertiary adjustment power in the supply and demand adjustment market, the operator of the grid storage battery A10 can make a purchase bid in the spot market to secure electricity that meets the agreement conditions.

[0061] In other words, by using the power bidding support device 100 according to this embodiment, the operator of the system storage battery A10 can prepare for a situation in which there is a shortage of power supply, even though it is now possible to provide biddable adjustment power at a price acceptable to the operator of the system storage battery A10 (for example, the market price or a higher price) based on past (for example, the previous week's) contract results.

[0062] <5. Explanation of bidding conditions generation process by the electricity bidding support device> The following describes, with reference to FIGS. 3 and 4, a specific example of the process for generating bidding conditions using a program readable by the power bidding support device 100. FIG. FIG. 3 is a flowchart for explaining the operation of the power bidding support device 100 according to one embodiment of the present invention, and FIG. 4 is a diagram showing a specific example of power trading based on the present invention.

[0063] In the example shown in FIG. 4, the bidding period in the supply and demand balancing market is set to one week from January 20th (Saturday) to January 26th (Friday). Therefore, the bidding acceptance period is from 12:00 on Monday (January 15th) of the week before the bidding period to 14:00 on Tuesday (January 16th), and transactions are processed between 14:00 and 15:00 on Tuesday.

[0064] <5.1. Generation of selling bidding conditions information for trading the first tertiary adjustment reserve in the supply and demand adjustment market> The storage battery state obtaining means 110 of the power bid supporting device 100 obtains information on the state of the system storage battery A10 that is selected for operation when generating selling bid condition information (step S110).

[0065] Then, the first bidding conditions generating means 120 of the electricity bid supporting device 100 generates selling bidding conditions information for trading of the first tertiary control capacity in the supply and demand adjustment market of the electricity supply and demand adjustment capacity exchange B10 (step S120).

[0066] Here, the step of generating selling bid condition information in the first bid condition generating means 120 (step S120) will be described in detail.

[0067] First, the block selection unit 121 selects bidding target blocks so that bidding target blocks and non-bidding target blocks that do not provide biddable adjustment power from the grid storage battery A10 are alternately provided (step S121). In the example shown in Figure 4, blocks 2, 4, 6, and 8 are selected as bidding eligible blocks for each day from January 20th to January 26th, and the remaining blocks 1, 3, 5, and 7 are selected as non-bidding eligible blocks (non-bidding eligible blocks), with bidding eligible blocks and non-bidding eligible blocks alternated. It is also possible to select blocks 1, 3, 5, and 7 as bidding eligible blocks, and block 2, 4, 6, and 8 as non-bidding eligible blocks.

[0068] Next, the adjustment capacity calculation unit 122 calculates the biddable adjustment capacity of the system storage battery A10 in each of the bidding target blocks (step S122).

[0069] Next, the agreement result acquisition unit 123 acquires past agreement results for the first tertiary adjustment reserve from the supply and demand adjustment market system B11 (step S123). In the example shown in Figure 4, the agreement result acquisition unit 123 acquires information regarding the agreement result (e.g., agreement rate) on Monday, January 15th, which is the day before the day on which bidding in the supply and demand adjustment market is to be held (Tuesday, January 16th).

[0070] Next, the selling price calculation unit 124 calculates the selling price based on the past contract results (step S124), and the selling bid condition information generation unit 125 generates selling bid condition information in the supply and demand adjustment market (step S125).

[0071] The selling bid condition information generated by the first bid condition generation means 120 is output from the output unit 108 of the power bidding support device 100 and provided to an aggregator that uses the power bidding support device 100, which is one embodiment of the present invention. The aggregator acquires this information from the power bidding support device 100 and makes a bid (selling bid) for the provision of biddable adjustment power.

[0072] <5.2. Generation of buying bidding conditions in the spot market> Next, the second bidding condition generating means 130 of the power bidding support device 100 generates information on buying bidding conditions in the spot market of the Japan Electric Power Exchange C10 (step S130).

[0073] The second bidding condition generation step (step S130) is performed for all blocks that have been agreed upon as a result of executing the first bidding condition generation step (step S120) (in the example shown in Figure 4, blocks 1, 3, 5, and 7 immediately preceding blocks 2, 4, 6, and 8 on each day from Saturday, January 20th to Friday, January 26th). Since the second bidding conditions generation step for each block is similar, the following will explain the second bidding conditions generation step for block 4 on Saturday, January 20th, which is one of the target blocks of the first bidding conditions generation step (step S120), as a representative example.

[0074] First, in the block (block 3 in the example shown in Figure 4) immediately preceding the block (block 4 on Saturday, January 20th in the example shown in Figure 4) agreed in the supply and demand adjustment market, the total charge amount calculation unit 131 calculates the total charge amount required to satisfy the biddable adjustment power agreed in the supply and demand adjustment market, taking into account the remaining chargeable / dischargeable amount at the start of the block agreed in the supply and demand adjustment market (step S131), in preparation for providing the biddable adjustment power agreed in the block agreed in the supply and demand adjustment market.

[0075] Next, the frame selection unit 132 calculates the number of charging frames required for the system storage battery A10 to charge the total charge amount in the block immediately before the contract block (block 3 in the example shown in Figure 4), and selects a frame to be bid (step S132). In the example shown in Figure 4, block 4 (frames 19 to 24) on Saturday, January 20th is a block that was traded in the supply and demand adjustment market, so frame selection unit 132 selects frames 17 and 18, which are the two frames immediately before block 4, from frames 13 to 18 that make up block 3, which is the block immediately before the block traded in the supply and demand adjustment market.

[0076] Next, the electricity purchase price setting unit 133 sets the electricity purchase price [yen / kWh] (step S133).

[0077] Then, the purchase bid condition information generation unit 134 generates purchase bid condition information including the total charge amount calculated by the total charge amount calculation unit 131, information on the bid target frame selected by the frame selection unit 132, and information on the purchase price set by the purchase price setting unit 133 (step S134).

[0078] The purchase bid condition information generated by the second bid condition generation means 130 is output as text, image, audio, etc. from the output unit 108 of the power bidding support device 100 and provided to the aggregator that manages and operates the power bidding support device 100. In the example shown in Figure 4, the aggregator obtains this information from the electricity bidding support device 100 and places a bid to buy electricity in blocks 17 and 18 of the block immediately prior to the contract block (i.e., block 3 on Saturday, January 20th) by 10:00 a.m. on the previous day, Friday, January 19th.

[0079] By using a program that can be read by such an electricity bidding support device 100 and the processing related to the generation of bidding conditions using this program, it is possible to generate purchase bidding condition information for the spot market of the Japan Electric Power Exchange C10, which will ensure that biddable adjustment power can be provided to the contracting party if a successful bid is made in the supply and demand adjustment market of the Electric Power Supply and Demand Adjustment Power Exchange B10 within the capacity of the system storage battery A10. This means that when an agreement is reached to provide biddable adjustment power at a favorable price in the transaction of the first tertiary adjustment power in the supply and demand adjustment market, the operator of the grid storage battery A10 can make a purchase bid in the spot market to secure electricity that meets the agreement conditions.

[0080] <Modification> The embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is indicated by the claims, not by the description of the above embodiments, and is intended to include all modifications within the meaning and scope of the claims.

[0081] For example, the selling price calculation unit 124 of the first bidding conditions generation means 120 does not need to calculate the selling price based on past contract results for the first tertiary control capacity.

[0082] For example, the flowchart (FIG. 3) according to this embodiment is one embodiment of the present invention, and the order of each process can be changed within the scope that does not change the gist of the present invention. Furthermore, other processes than those shown in the flowcharts may be included, and it is also possible not to include some of the processes shown in the flowcharts.

[0083] For example, in the bidding condition generation process in this embodiment, the battery status acquisition means 110 of the power bidding support device 100 acquires information about the status of the system battery A10 when generating sell bid condition information, but the battery status acquisition means 110 may acquire information about the status of the system battery A10 at any timing, or may acquire the information continuously or at regular time intervals. [Explanation of symbols]

[0084] 100 Electricity bidding support device 110 Battery status acquisition method 120 First bidding conditions generation means 130 second bidding conditions generation means 121 Block Selection Section 122 Adjustment force calculation section 123 Trade result acquisition section 124 Selling price calculation section 125 Selling bid condition information generation unit 131 Total charge amount calculation unit 132 Frame selection section 133 Power Purchase Price Setting Department 134 Buying bid condition information generation unit A10 Grid storage battery B10 Electricity Supply and Demand Adjustment Power Exchange B11 Supply and demand balancing market system C10 Japan Electric Power Exchange (JEPX) C11 Spot Market System D10 Communication Network

Claims

1. An electric power bidding support device that supports electric power bidding based on a state of a grid storage battery, a first bidding conditions generation means for generating sell bidding conditions information for trading of the first tertiary control capacity in the supply and demand adjustment market of the electricity supply and demand adjustment capacity exchange; a second bidding condition generating means for generating purchase bidding condition information in the spot market of the Japan Electric Power Exchange based on the contract result in the supply and demand adjustment market; the selling bid condition information includes a bidding target block selected as a bidding target from among blocks that are time periods separated in the supply and demand adjustment market, a bidding adjustable capacity by the grid storage battery in the bidding target block, and a selling price in the bidding target block; The purchase bid condition information includes a bid target block selected as a bid target from blocks that are time slots defined in the spot market, the amount of charge to the system storage battery in the bid target block, and the electricity purchase price in the bid target block.

2. the first bidding conditions generation means includes a block selection unit that selects a bidding target block from among blocks partitioned in the supply and demand adjustment market; The power bidding support device according to claim 1, characterized in that the block selection unit selects the bidding target blocks so that the bidding target blocks and non-bidding target blocks that do not provide biddable adjustment power by the grid storage battery are alternately arranged.

3. further comprising a storage battery status obtaining means for obtaining a status of the system storage battery; the first bidding condition generation means includes an adjustment capacity calculation unit that calculates a bidding available adjustment capacity of the grid storage battery, 3. The power bidding support device according to claim 1, wherein the adjustment capacity calculation unit determines the smaller of the maximum output of the system storage battery in the block to be bidded or the remaining chargeable / dischargeable capacity of the system storage battery obtained by the storage battery status obtaining means divided by the length of the block as the biddable adjustment capacity of the system storage battery.

4. 2. The power bidding support device according to claim 1, wherein the first bidding condition generation means comprises: a contract result acquisition unit that acquires past contract results for the first tertiary control capacity; and a selling price calculation unit that calculates the selling price based on the past contract results acquired by the contract result acquisition unit.

5. further comprising a storage battery status obtaining means for obtaining a status of the system storage battery; 2. The electricity bidding support device according to claim 1, wherein the second bidding condition generation means comprises: a total charge amount calculation unit that calculates a total charge amount to the grid storage battery in a block immediately before the agreed block from the bidding available adjustment capacity of the grid storage battery in the agreed block, the length of the block, and the remaining charge amount of the grid storage battery obtained by the storage battery state acquisition means; and a frame selection unit that calculates the number of charge frames required for the grid storage battery to charge the total charge amount in the block immediately before the agreed block, and selects the frames to be bid.

6. An electricity bidding support method for supporting electricity bidding based on a state of a grid storage battery, comprising: a first bidding conditions generation step of causing a computer to generate sell bidding conditions information for trading of the first tertiary control capacity in the supply and demand adjustment market of the electricity supply and demand adjustment capacity exchange; a second bidding condition generation step of causing the computer to generate bidding condition information for purchases in the spot market of the Japan Electric Power Exchange based on the contract results in the supply and demand balancing market, the selling bid condition information includes a bidding target block selected as a bidding target from among blocks that are time periods separated in the supply and demand adjustment market, a bidding adjustable capacity by the grid storage battery in the bidding target block, and a selling price in the bidding target block; an electricity bidding support method, characterized in that the purchase bid condition information includes a bid target block selected as a bid target from blocks that are time slots defined in the spot market, the amount of charge to the grid storage battery in the bid target block, and the electricity purchase price in the bid target block.

7. A computer that supports electricity bidding based on the status of grid storage batteries. a first bidding conditions generation step of generating sell bidding conditions information for trading of the first tertiary control capacity in the supply and demand adjustment market of the electricity supply and demand adjustment capacity exchange; a second bidding condition generation step of generating purchase bidding condition information in the spot market of the Japan Electric Power Exchange based on the contract result in the supply and demand adjustment market, the selling bid condition information includes a bidding target block selected as a bidding target from among blocks that are time periods separated in the supply and demand adjustment market, a bidding adjustable capacity by the grid storage battery in the bidding target block, and a selling price in the bidding target block; an electricity bidding support program, characterized in that the purchase bid condition information includes a bid target block selected as a bid target from blocks that are time slots defined in the spot market, the amount of charge to the grid storage battery in the bid target block, and the electricity purchase price in the bid target block.

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