JP2017224208A - Storage battery control system, method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further improve utilization efficiency of a system.SOLUTION: When a first discharge instruction or a first charge instruction for a storage battery system in a second transaction time zone is given during a first transaction time zone, a transaction setting instruction part of a storage battery control system gives, during a time period until the start time of the second transaction time zone, a charge instruction by setting a charge plan in consideration of a discharge amount corresponding to the first discharge instruction to give a second discharge instruction in a third transaction time zone set after the second transaction time zone, or a discharge instruction to the storage battery system by setting a discharge plan in consideration of a charge amount corresponding to the first charge instruction to give the second charge instruction in the third transaction time zone, after the first discharge instruction or the first charge instruction is given.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a storage battery control system, method, and program.

  Install a storage battery system on the electricity consumer side, obtain a difference in electricity charges using low-cost late-night electricity as electricity used in the daytime, reduce the amount of contract electricity due to peak cut / peak shift of the consumer, A retailer manages charge / discharge of a storage battery system at a remote location to reduce the difference (imbalance) between the demand and supply (power generation) of power generated by fluctuations in the output of renewable energy and temperature fluctuations. ing.

JP 2015-186308 A

  However, in such a method of using a storage battery system, since the number of times of charge / discharge with respect to the storage battery is 1 to 2 times per day, the use efficiency of the storage battery system is poor and a very long period is required to recover the initial cost of system installation. There was a problem that it was necessary.

  In order to achieve the above object, an embodiment of the present invention aims to provide a storage battery control system, method, and program capable of further improving the utilization efficiency of the system.

The storage battery control system of the embodiment divides a day into a plurality of transaction time zones, uses a power transaction system that performs power trading for each transaction time zone, and is installed on the customer side to the customer. It is a storage battery control system for controlling a storage battery system capable of storing supplied power.
When the first discharge instruction for causing the storage battery system to discharge is made in the first transaction time zone, the transaction setting instruction section is set in the second transaction time zone after the first discharge instruction is made. The third transaction time zone set after the second transaction time zone is given to the storage battery system in order to charge in the second transaction time zone during the period up to the start time of The discharge plan which considered the charge amount corresponding to the charge instruction | indication for performing a 2nd discharge instruction in is set, and the said 2nd discharge instruction | indication is performed with respect to a storage battery system.
Further, the transaction setting instruction unit, when the first charging instruction for charging the storage battery system is made in the first transaction time zone, after the first charging instruction is made, A third transaction set after the second transaction time period is given to the storage battery system to instruct the storage battery system to discharge in the second transaction time period during the period up to the start time of the time period. A charge plan is set in consideration of a discharge amount corresponding to the discharge instruction for performing the second charge instruction in the time zone, and the second charge instruction is performed to the storage battery system.

FIG. 1 is a schematic configuration block diagram of an electric power transaction system including a storage battery control system of an embodiment. FIG. 2 is an explanatory diagram of a power supply path between a power generation company, a grid business operator, a power trading market, and a consumer centered on a retail business operator. FIG. 3 is a schematic configuration block diagram of the storage battery system of the embodiment. FIG. 4 is a functional configuration explanatory block diagram of the retailer system. FIG. 5 is a diagram illustrating an example of power imbalance prediction and an estimated power transaction market price in the power trading market, and an example of an imbalance canceling method. FIG. 6 is a diagram illustrating an example of power imbalance prediction and an estimated power transaction market price in the power trading market and another example of an imbalance cancellation method. FIG. 7 is an explanatory diagram of the operation when the insufficient imbalance is resolved. FIG. 8 is an explanatory diagram of the operation when the excessive imbalance is eliminated. FIG. 9 is a diagram for explaining the operation in the case of selling electricity after replacing the market. FIG. 10 is an operation explanatory diagram in the case of purchasing electricity after replacing the market. FIG. 11 is an explanatory diagram of an avoidance process procedure at the time of insufficient imbalance by the storage battery system. FIG. 12 is an explanatory diagram of an avoidance process procedure at the time of excessive imbalance by the storage battery system.

Next, embodiments will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration block diagram of an electric power transaction system including a storage battery control system of an embodiment.
The power trading system 100 can be broadly divided into a power generation company system 111 that is operated by a power generation company and generates power, a system operator system 112 that is operated by a system company and supplies commercial power, and a plurality of consumers. There are a retailer system 115 operated by a retailer who retails power to a customer system 114 corresponding to a plurality of customer facilities 113 respectively operated, and a power exchange operating a power trading market 125 described later. And an electric power exchange system 116 to be operated.

In the above configuration, the customer system 114 includes a customer facility 113 and a storage battery system 117 capable of temporarily storing power to be supplied to the customer facility 113.
Here, the storage battery system 117 is installed on the customer system 114 side by the retailer, and charging / discharging of the storage battery system 117 is controlled by the retailer system 115.

FIG. 2 is an explanatory diagram of a power supply path between a power generation company, a grid business operator, a power trading market, and a consumer centered on a retail business operator.
Here, prior to the description of the power supply path, the types of main power transactions being performed in the current power transaction market 125 will be described.

It is necessary for the stable supply of electric power that the plan of the power generation amount of the power generation company 121 and the plan of the demand amount of the retail business 123 are balanced.
In this case, the power generation company 121 plans the power generation amount, confirms the power generation amount for which the contract has already been made (the power generation amount for which the seller [retail business, etc.] is determined), and If power that is cheaper than the power generation cost is sold, it will try to buy it in the power trading market 125, and if power can be sold higher than the power generation cost of the power generation company 121, it will try to sell it in the power trading market 125. It will be.

  On the other hand, the retailer 123 sets the procurement amount by predicting the demand of customers such as the customer 124, but the procurement amount (the purchase destination [power generation company etc.]) that has already been contracted is determined. If there is a shortage in the procurement amount, it will try to purchase (electricity purchase) from the electricity trading market 125, and if there is a surplus in the procurement amount, it will be sold to the electricity trading market 125 (power sales) ).

  For this reason, since the electric power generation company 121 and the retailer 123 will perform a bid in the electric power transaction market 125 as needed, all the bids of the electric power generation company 121 and the retailer 123 are put together in units of one day. There is a daily market (spot market) that matches and balances price and quantity in relation to supply and demand.

By the way, the actual relationship between supply and demand is not fixed, and fluctuations in power supply due to failure of power generation facilities, fluctuations in power demand due to fluctuations in temperature, and the like occur.
Therefore, as a place to absorb and adjust the fluctuations in the supply and demand relationship, 48 trading hours are divided into one unit of electricity (units: 0 to 30 minutes, 30 to 60 minutes per hour). There is a market on the day (one hour ago market) where Zaraba trade is performed that balances price and quantity individually in relation to supply and demand.

Next, the power supply path will be described.
As shown in FIG. 2, in principle, the retailer 123 procures electric power from the power generator 121 using the daily market and installs it on the customer facility 113 or the customer 124 side of the customer 124. Electric power is supplied to the storage battery system 117. And when the retailer 123 has a surplus in the amount of power procured from the power generator 121, the retailer 123 makes a bid for the sale of power to the power transaction market 125 using the market on the day, and the sale transaction is completed. The power is sold to the power purchaser via the power trading market 125. In addition, when there is a shortage of power procured from the power generation company 121, the retailer 123 makes a bid for purchasing power to the power transaction market 125 using the market on the day, and the purchase transaction is completed. In some cases, power is purchased from a power seller via the power trading market 125 and supplied to the consumer 124.

By the way, in this embodiment, the retailer 123 has installed the storage battery system 117 with respect to the consumer 124 as mentioned above.
Hereinafter, the storage battery system 117 will be described.

FIG. 3 is a schematic configuration block diagram of the storage battery system of the embodiment.
The storage battery system 117 can be roughly divided into a storage battery device 11 for storing electric power, and direct current power supplied from the storage battery device 11 is converted into alternating current power having a desired power quality and supplied to the customer facility 113 or the retailer 123. And a power converter (PCS: Power Conditioning System) 12 that converts AC power supplied through the retailer 123 into DC power and supplies the DC power to the storage battery device 11.

The storage battery device 11 roughly includes a plurality of battery boards 21-1 to 21-N (N is a natural number) and a battery terminal board 22 to which the battery boards 21-1 to 21-N are connected. .
The battery boards 21-1 to 21-N include a plurality of battery units 23-1 to 23-M (M is a natural number) connected in parallel to each other, a gateway device 24, and a BMU (Battery Management Unit: battery management described later). Device) and a DC power supply device 25 for supplying a DC power supply for operation to a CMU (Cell Monitoring Unit).

Here, the configuration of the battery unit will be described.
The battery units 23-1 to 23-M are connected to output power via a high potential power supply line (high potential power supply line) LH and a low potential power supply line (low potential power supply line) LL, respectively. Lines (output power supply lines; bus lines) LHO and LLO are connected to supply power to the power converter 12 that is the main circuit.

Since the battery units 23-1 to 23-M have the same configuration, the battery unit 23-1 will be described as an example.
The battery unit 23-1 is roughly classified into a plurality (22 pieces in FIG. 2) of cell modules 31-1 to 31-22 and a plurality of cell modules 31-1 to 31-22 (see FIG. 1). 24) CMU 32-1 to 32-22, a service disconnect 33 provided between the cell module 31-11 and the cell module 31-12, a current sensor 34, and a contactor 35. The plurality of cell modules 31-1 to 31-22, the service disconnect 33, the current sensor 34, and the contactor 35 are connected in series.

  In the above configuration, the configuration in which each of the cell modules 31-1 to 31-22 and the corresponding CMUs 32-1 to 32-22 are combined is hereinafter referred to as battery modules 37-1 to 37-22. To do. For example, a configuration in which the cell module 31-1 and the corresponding CMU 32-1 are combined is referred to as a battery module 37-1.

  Here, in the cell modules 31-1 to 31-22, a plurality of battery cells are connected in series and parallel to form an assembled battery. And the assembled battery group is comprised by the cell modules 31-1 to 31-22 connected in series.

In the above configuration, for example, a lithium ion battery is used as the battery cell used for the cell modules 31-1 to 31-22.
Hereinafter, the composition of the lithium ion battery will be specifically described.
The first aspect of the lithium ion battery includes a lithium metal compound containing at least one metal element selected from the group consisting of cobalt, nickel and manganese, and the lithium metal compound is Li _a Ni _b Co _c Mn _d O ₂ (wherein the molar ratios a, b, c and d are 0 ≦ a ≦ 1.1, b + c + d = 1), and a negative electrode comprising a titanium-containing metal composite oxide And a nonaqueous electrolyte secondary battery including a nonaqueous electrolyte containing a nonaqueous solvent.

Further, a second aspect of the lithium battery, cobalt, lithium metal compounds include lithium metal compound containing at least one metal element selected from the group consisting of nickel and manganese Li _a Ni _b Co _c Mn _d A positive electrode including a positive electrode active material-containing layer represented by O ₄ (wherein molar ratios a, b, c, and d are 0 ≦ a ≦ 1.1, b + c + d = 2), and a titanium-containing metal composite oxide. A nonaqueous electrolyte secondary battery including a negative electrode and a nonaqueous electrolyte containing a nonaqueous solvent is configured.

  According to the storage battery system 117 using the lithium ion battery having the above-described configuration, the SOC (State Of Charge) = 0% state to the SOC = 100% state within a time corresponding to one transaction unit time zone. Charging is possible, or discharging is possible from a state where SOC = 100% to a state where SOC = 0%.

In the above description, the case of a lithium ion battery has been described as the battery cell, but charging corresponding to the charging plan is possible within one transaction time zone, and corresponding to the discharge plan within one transaction time zone. If it is a battery cell which can comprise the storage battery which can be discharged, it can apply similarly.
For example, in the storage battery system 117, the storage battery can be charged up to the maximum charge amount that can be set in the charge plan within one transaction time zone, and the maximum discharge amount that can be set in the discharge plan within one transaction time zone. Any type of storage battery can be used as long as it has a battery cell that can be discharged.

Furthermore, the battery unit 23-1 includes a BMU 36, and the BMU 36 and the CMUs 32-1 to 32-22 are connected by communication conforming to the CAN communication standard, for example.
The BMU 36 controls the entire battery unit 23-1 under the control of the gateway device 24, and displays the communication results (voltage data and temperature data described later) and the detection results of the current sensor 34 with the CMUs 32-1 to 32-22. Based on this, the contactor 35 is controlled to open and close.

Next, the configuration of the battery terminal board 22 will be described.
The battery terminal board 22 includes a plurality of panel breakers 41-1 to 41-N provided corresponding to the battery boards 21-1 to 21-N and a master configured as a microcomputer that controls the entire storage battery device 11. (Master) device 42.

  The master device 42 is configured as a control power line 71 and Ethernet (registered trademark) supplied via the UPS (Uninterruptible Power System) 12A of the power conversion device 12 between the power conversion device 12 and the control data. Is connected to a control communication line 72 that exchanges the above.

Next, the configuration of the retailer system 115 will be described.
FIG. 4 is a functional configuration explanatory block diagram of the retailer system.
The retailer system 115 includes a retailer main body system 115A and a storage battery charge / discharge control system 115B.

  The retailer main body system 115A includes a demand prediction unit 51 that performs power demand prediction of the entire customer system 114 under control based on each customer's contract, the customer's own demand plan, demand history, and the like. 51 Demand plan creation unit 52 that creates a power demand plan for the entire customer system 114 under the power demand forecast and storage battery system 117 corresponding to the latest charge / discharge instruction before execution, which will be described later, and calculates the amount of power procurement Supply plan creation for creating a supply plan for each customer system 114 on the basis of the power demand plan created by the power supply procurement amount calculation unit 53 and the demand plan creation unit 52 and the power supply procurement amount calculated by the power supply procurement amount calculation unit 53 A supply and demand distribution plan based on the power demand plan created by the unit 54 and the demand plan creation unit 52 and the supply plan created by the supply plan creation unit 54 With submit to power wide-area management propulsion calligraphy, make a bid for the power trading market 125, it is provided with a supply and demand allocation planning unit 55 to obtain a contract result.

The storage battery charge / discharge control system 115B makes a charge / discharge determination for each transaction time zone of the current day market (market one hour ago) based on the supply / demand distribution plan created by the supply / demand distribution plan creation unit 55 of the retailer main body system 115A. Based on the charge / discharge determination unit 61 and the charge / discharge determination result of the charge / discharge determination unit 61, a charge instruction or a discharge instruction corresponding to the next transaction time zone in which a charge / discharge instruction has not yet been issued is given. A charge / discharge instruction unit 62 that obtains a response corresponding to the instruction, and outputs the charge instruction or discharge instruction for which the instruction has been completed to the demand plan creation unit 52 of the retailer main body system 115A as the latest charge / discharge instruction before execution; A storage battery that controls a plurality of storage battery systems 117 (storage battery group) belonging to a subordinate customer system 114 in accordance with a charge / discharge instruction of the charge / discharge instruction unit 62 The control unit 63, the storage battery information acquisition unit 64 that acquires storage battery information such as SOC, output current, and output voltage from the storage battery system 117, and the storage battery information that stores various storage battery information acquired by the storage battery information acquisition unit 64 in time series. A database (DB) 65 and a charge / discharge instruction database (DB) 66 that stores the charge instruction and the discharge instruction output from the charge / discharge instruction unit 62 in time series are provided.
In the above configuration, the storage battery group control unit 63 or the storage battery information acquisition unit 64 and the storage battery system 117 communicate with each other via a communication network such as the Internet.

Next, the operation of the embodiment will be described.
First, the operation of the charge / discharge determination unit 61 will be described.
FIG. 5 is a diagram illustrating an example of power imbalance prediction and an estimated power transaction market price in the power trading market and an example of an imbalance avoidance method.
Moreover, FIG. 6 is a figure which shows an example of the electric power imbalance prediction in an electric power trading market, an example of an electric power trading market price estimated value, and another example of the imbalance avoidance method.

  In FIG.5 and FIG.6, imbalance prediction is each shown as a bar graph for every transaction time slot | zone B1-B10, and represents the surplus electric energy and deficient electric energy with respect to a plan value on an image.

  Therefore, in summary, when the surplus power amount is large, the price of the power trading market 125 decreases according to the law of supply and demand. On the other hand, when the amount of power shortage is large, the price of the power trading market 125 increases.

In other words, the estimated power transaction market price 125 is an estimate of the price of the power transaction market 125 based on the demand forecast.
Then, the charge / discharge determination unit 61 performs charge / discharge determination based on the imbalance amount and the estimated price of the electric power transaction market 125 so that the influence of the imbalance (for example, the resulting imbalance settlement amount) can be further reduced. It becomes.

More specific description will be given below.
In this case, various methods for reducing the influence of imbalance are conceivable, but the imbalance is avoided as much as possible by using a method for further reducing imbalance by charging / discharging the storage battery and the power trading market 125. A method of (more preferably eliminating) will be described as an example.
First, a method for avoiding imbalance as much as possible by charging and discharging the storage battery will be described with reference to FIG.
As shown in FIG. 5, in the transaction time zone B3, the surplus power amount is large, but the price of the power transaction market 125 is low. Therefore, selling to the power transaction market 125 is not preferable in terms of operation cost.
Therefore, in the trading time zone B3, it is preferable to store the power by charging the storage battery device rather than selling it in the power trading market 125. Therefore, the storage battery system 117 is charged to avoid imbalance as much as possible. . More preferably, the imbalance is eliminated so that no settlement is required.
On the other hand, in the transaction time zone B8, the amount of power shortage is large, but the price of the power transaction market 125 is high.
Therefore, in the transaction time zone B8, it is preferable to use the power by discharging in the storage battery system 117, rather than buying it in the power trading market 125, so that the imbalance is avoided as much as possible by discharging the storage battery system 117. More preferably, the imbalance is eliminated so that no settlement is required.

Next, a method for avoiding imbalance as much as possible using the power trading market 125 and further reducing the imbalance settlement amount will be described.
As shown in FIG. 6, in the transaction time zone B <b> 3, it is economically preferable to purchase from the power trading market 125 rather than selling from the power trading market 125. Therefore, in the transaction time zone B3, electric power is purchased from the electric power transaction market 125, the storage battery system 117 is charged and electric power is stored to avoid imbalance as much as possible, and the imbalance settlement amount is further reduced.
On the other hand, in the transaction time zone B8, it is economically preferable that the retailer 123 sells it in the power trading market 125 rather than the procurement price of the power charged in the storage battery system 117. Therefore, in the trading time zone B8, the power trading market 125 is replaced.

Hereinafter, the imbalance avoidance operation will be described in more detail.
First, an operation for avoiding insufficient imbalance as much as possible will be described.
FIG. 7 is an explanatory diagram of operations when avoiding insufficient imbalance as much as possible.
The retailer 123 procures power from the power generator 121 by incorporating the charge of the storage battery system 117.

  More specifically, as shown in FIG. 7, when the demand in the customer facility 113 is 100 kWh and the chargeable capacity of the storage battery system 117 is 50 kW, the charge of 50 kWh of the storage battery system 117 is incorporated. The retailer 123 procures 150 = 100 + 50 (kWh) of power from the power generator 121.

Then, the retailer supplies 100 kWh to the customer facility 113 and supplies 50 kWh to the storage battery system 117 for charging.
As a result, 50 kW is stored in the storage battery system 117.

  Thereafter, if the electric power procurable from the power generation company 121 is 100 kW and the demand in the customer facility 113 becomes 200 kW, the retailer may be in a case where there is no power storage amount in the storage battery system. For example, the grid operator 122 needs to compensate for the shortage of 100 kWh, and a penalty associated with imbalance also occurs. However, 100 kWh procured from the power generation company 123 and 50 kWh from the storage battery system are supplied to the customer facility 113, and a shortage of 50 kWh (= 200 kWh-100 kWh-50 kWh) is procured from the grid company 122.

  As a result, the procurement amount from the grid operator 122 can be effectively reduced from 100 kWh to 50 kWh, and the imbalance settlement due to the penalty generated by the grid operator 122 compensating for the insufficient power can be reduced. The amount obtained by subtracting the cost of supplying 50 kWh from the storage battery system to the consumer from the cost of procuring 50 kWh that would have been insufficient from the consumer 122 is the profit at the retailer 123.

Next, the operation for eliminating the excess imbalance will be described.
FIG. 8 is a diagram for explaining the operation when avoiding the excess imbalance as much as possible.
In this case, it is assumed that 50 kW of power has already been stored in the storage battery system 117 as the amount of power that can be discharged.

  The retailer 123 procures electric power (= 100 kWh-50 kWh) by incorporating the discharge amount (50 kWh) of the storage battery system 117 from the power generation company 121, that is, subtracting the discharge amount of the storage battery system 117.

And the retailer 123 discharges 50 kWh from the storage battery system 117 to the customer facility 113 together with 50 kWh procured from the power generator 121 and supplies it.
As a result, 100 kWh is supplied to the customer facility 113, and the storage battery system 117 is in a state where no electric power is stored (= 0 kW).

  Thereafter, when the power procured from the power generation company is 200 kWh and the demand in the customer facility 113 becomes 100 kWh, the retailer 123 uses the customer facility among the power procured from the power generation company 121. 100 kWh is supplied to 113.

  Then, among the remaining 100 kWh (= 200 kWh−100 kWh) of electric power procured from the power generation company 121, 50 kWh is supplied to the storage battery system 117 to store electricity, and the remaining 50 kWh is collected to the grid company 122 for surplus power The imbalance settlement amount as a penalty will be paid and collected.

  As a result, the amount of power effectively received by the grid operator 122 can be reduced from 100 kWh to 50 kWh, so that the cost (an imbalance settlement amount) when the grid operator 122 further takes the surplus 50 kWh. : The amount obtained by subtracting the cost (imbalance settlement amount: 50 kWh power take-off penalty) in the case of receiving 50 kWh from 100 kWh power take-off penalty becomes the profit at the retailer 123.

Next, market replacement will be described.
Here, market replacement means that if surplus power that can be supplied to consumers is generated, the system operator does not have to take over the power, but sells it in the electricity market, or supplies it to the consumer. When power shortage that should be generated occurs, it means that power is purchased in the power market and supplied to consumers instead of being supplemented by the grid operator.
First, the operation when replacing the market and selling power will be described.
FIG. 9 is a diagram for explaining the operation in the case of selling electricity after replacing the market.
The retailer 123 procures power from the power generator 121 by incorporating the charge of the storage battery system.

  More specifically, if the demand at the customer facility 113 is 100 kWh, and the storage capacity of the storage battery system 117 is 50 kW, the charge of the storage battery system 117 is 50 kWh. The power generator 121 procures 150 = 100 + 50 (kWh) of power.

The retailer 123 supplies 100 kWh to the customer facility 113 and supplies 50 kWh to the storage battery system 117 for charging.
As a result, 50 kW is stored in the storage battery system 117.

  Thereafter, when the power procured from the power generation company 121 is 100 kWh and the demand in the customer facility 113 is 100 kWh, the retailer 123 may be in the case where there is no power storage amount in the storage battery system 117. For example, it is necessary to supply all 100 kWh procured from the power generation company 121 to the customer facility 113, but supply 50 kWh to the customer from the storage battery system and supply the surplus 50 kWh (= 100 kWh−50 kWh) to the power trading market 125. Sell power to it.

  As a result, the amount obtained by subtracting the power procurement price from the power generation company 121 of the retailer 123 from the sale price of the power to the power trading market 125 becomes the profit in the retailer 123.

Next, an operation in the case of purchasing power from the power trading market 125 by performing market replacement will be described.
FIG. 10 is an operation explanatory diagram in the case of purchasing electricity after replacing the market.
In this case, it is assumed that 50 kW of power has already been stored in the storage battery system 117 as the amount of power that can be discharged. In addition, it is assumed that the power purchase price from the power trading market 125 is lower than the price at which power is procured from the power generation company 121.

  The retailer 123 procures electric power (= 100 kWh-50 kWh) by incorporating the discharge amount (50 kWh) of the storage battery system 117 from the power generation company 121, that is, subtracting the discharge amount of the storage battery system 117.

The retailer 123 supplies 50 kWh procured from the power generator 121 to the customer facility 113 and discharges and supplies 50 kWh from the storage battery system 117.
As a result, 100 kWh is supplied to the customer facility 113, and the storage battery system 117 is in a state where no electric power is stored (= 0 kW).

After that, when the power procured from the power generation company 121 is 100 kWh and the demand of the customer facility becomes 100 kWh, the retailer 123 demands all 100 kWh that is the power procured from the power generation company 121. Supply to house equipment 113.
And with respect to the storage battery system 117 in which electric power is not stored, 50kW is purchased from the electric power transaction market 125, it supplies to the storage battery system 117, and electrical storage is performed.

  As a result, it becomes possible to reduce the amount of power procurement from the power generation company 121 after the next time, and purchase 50 kWh from the power trading market 125 from the power procurement cost from the power generation company 121 corresponding to the power amount of 50 kWh. The amount after deducting the cost is the profit of the retailer.

Here, a procedure for avoiding insufficient imbalance or surplus imbalance using the storage battery system 117 will be described more specifically.
In the following avoidance procedure, one of the purposes is to increase the usage rate of the storage battery system 117 by increasing the number of times of discharging or charging of the storage battery constituting the storage battery system 117.

Next, a more specific processing procedure for improving the operation efficiency of the storage battery system 117 and reducing the effective operation cost of the storage battery system 117 will be described.
FIG. 11 is an explanatory diagram of an avoidance process procedure at the time of insufficient imbalance by the storage battery system.
In the following avoidance procedure, one of the purposes is to increase the usage rate of the storage battery system 117 by increasing the number of times of discharging or charging of the storage battery constituting the storage battery system 117.
Here, it is assumed that the storage battery system 117 is not charged in the initial state (the (X-3) transaction time zone in which a bid is placed in the market one hour ago corresponding to the Xth transaction time zone (= 30 minutes).

  The demand forecasting unit 51 of the retailer main body system 115A in the (X-3) th transaction time zone is the entire customer system 114 under its control based on each customer's contract, the customer's own demand plan, demand history, etc. The power demand prediction in the Xth transaction time zone is performed (step S11).

  As a result, the demand plan creation unit 52 creates a power demand plan for the entire customer system 114 under control by incorporating the power demand prediction of the demand prediction unit 51 and the initial charging of the storage battery system 117 into the plan, and a supply and demand distribution plan creation unit (Step S12).

  In parallel with this, the power supply procurement amount calculation unit 53 calculates the power supply procurement amount from the power generation company in order to confirm the relative procurement amount (step S13). As a result, the supply plan creation unit 54 creates a supply plan for each customer system 114 based on the power demand plan created by the demand plan creation unit 52 and the power supply amount calculated by the power supply amount calculation unit 53. The data is output to the distribution plan creation unit 55.

  As a result, the supply and demand distribution plan creation unit 55 creates a supply and demand distribution plan based on the power demand plan created by the demand plan creation unit 52 and the supply plan created by the supply plan creation unit 54. (Step S14).

In addition, the supply and demand distribution plan creation unit 55 performs a bid corresponding to the Xth transaction time period for the power transaction market 125 (step S15).
Further, the supply and demand distribution plan creation unit 55 submits a plan corresponding to the same day plan in the Xth transaction time zone to the electric power wide area operation promotion organization (step S16).
When the bid transaction is executed, the supply and demand distribution plan creation unit 55 notifies the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B.

On the other hand, the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B notified of the supply / demand distribution plan is the first (X) after the gate close time GC (X) of the power transaction market 125 corresponding to the Xth transaction time zone. -2) In the transaction time zone, based on the supply and demand distribution plan, a charge / discharge determination is made in the Xth transaction time zone in the market one hour ago (step S17).
Specifically, the charge / discharge determination unit 61 determines which of the following three states is present.

  The first state is a state where it is expected that insufficient imbalance will not occur. In this first state, it is determined that charging should be performed with a charge amount corresponding to the total amount of the initial charge amount incorporated in the plan in step S12.

  The second state is a state in which insufficient imbalance is expected to occur, but the insufficient imbalance amount is in the range of the initial charge amount incorporated in the plan in step S12. In the second state, it is determined that charging should be performed with a charge amount corresponding to an amount obtained by subtracting the insufficient imbalance amount from the initial charge amount incorporated in the plan in step S12.

  In the third state, insufficient imbalance is expected to occur, but the insufficient imbalance amount exceeds the initial charge amount incorporated in the plan in step S12. In the third state, it is determined that charging should not be performed.

  Based on the determination result of the charge / discharge determination unit 61, when the charge / discharge instruction unit 62 determines the first state or the second state, the charge amount determined by the charge / discharge determination unit 61 is the Xth transaction. The storage battery group control unit 63 is instructed to charge in the time zone, and the storage battery group control unit 63 performs control so that the storage battery system 117 is charged in the Xth transaction time zone in accordance with the charging instruction (step S18). ).

  At this time, the charging / discharging instruction unit 62 notifies the demand plan creation unit 52 of the retailer main body system 115A that the charging instruction has been made in the X-th transaction time zone, and the contents of the charging instruction to the charging / discharging instruction database 66. And the instruction time are stored in association with each other.

As a result of the control of the storage battery group control unit 63, when it is necessary to charge, the storage battery system 117 is charged in the Xth transaction time zone (step S19).
The storage battery information including the state of the storage battery of the storage battery system 117 after charging is acquired by the storage battery information acquisition unit 64 and stored and stored in the storage battery information database 65 together with the time information.
The storage battery information is notified to the charge / discharge determination unit 61 and used for the next charge / discharge determination.

Subsequently, the demand forecasting unit 51 of the retailer main body system 115A in the (X-2) th transaction time zone is under the control of each customer based on the contract of each customer, the customer's own demand plan, demand history, etc. The power demand prediction in the (X + 1) th transaction time zone of the entire system 114 is performed (step S21).
Thereby, the demand plan preparation part 52 is subordinate according to the charge instruction | command (equivalent to the latest charge / discharge instruction | indication before execution) corresponding to the power demand prediction of the demand prediction part 51, and the Xth transaction time zone corresponding to the storage battery system 117. A power demand plan for the entire customer system 114 is created and output to the supply and demand distribution plan creation unit 55.

  In parallel with this, the power supply procurement amount calculation unit 53 calculates the power supply procurement amount from the power generation company in order to confirm the relative procurement amount (step S22). As a result, the supply plan creation unit 54 creates a supply plan for each customer system 114 based on the power demand plan created by the demand plan creation unit 52 and the power supply amount calculated by the power supply amount calculation unit 53. The data is output to the distribution plan creation unit 55.

As a result, the supply and demand distribution plan creation unit 55 creates a supply and demand distribution plan based on the power demand plan created by the demand plan creation unit 52 and the supply plan created by the supply plan creation unit 54. (Step S23).
In addition, the supply and demand distribution plan creation unit 55 makes a bid corresponding to the (X + 1) th transaction time zone for the power transaction market 125 (step S24).
Further, the supply and demand distribution plan creation unit 55 submits a plan corresponding to the current day plan in the (X + 1) th transaction time zone to the electric power wide area operation promotion organization (step S25).
When the bid transaction is executed, the supply and demand distribution plan creation unit 55 notifies the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B.

On the other hand, the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B notified of the supply / demand distribution plan is the first after the gate close time GC (X + 1) of the power transaction market 125 corresponding to the (X + 1) th transaction time zone. (X-1) In the transaction time zone, charge / discharge determination in the Xth transaction time zone in the market one hour ago is performed based on the supply and demand distribution plan (step S26).
Specifically, the charging / discharging determination unit 61 determines which of the following two states is present.

  The first state is a state in which shortage imbalance is expected to occur. In the first state, it is determined that the discharge should be performed with the discharge amount corresponding to the insufficient imbalance amount.

  The second state is a state where it is expected that insufficient imbalance will not occur. In the second state, it is determined that the discharge should not be performed.

  Based on the determination result of the charge / discharge determination unit 61, the charge / discharge instruction unit 62 corresponds to the insufficient imbalance amount, which is the discharge amount determined by the charge / discharge determination unit 61 when determining the first state. The storage battery group control unit 63 is instructed to discharge the discharge amount to be discharged in the (X + 1) th transaction time zone, and in accordance with this discharge instruction, the storage battery group control unit 63 causes the storage battery system 117 to be in the (X + 1) th transaction time zone. In step S27, control is performed so as to discharge.

  At this time, the charge / discharge instruction unit 62 notifies the demand plan creation unit 52 of the retailer main body system 115A that the discharge instruction has been made in the (X + 1) th transaction time zone, and also instructs the charge / discharge instruction database 66 to perform the discharge instruction. The contents and instruction time are stored in association with each other.

As a result of the control of the storage battery group control unit 63, when it is necessary to discharge, the storage battery system 117 is discharged in the (X + 1) th transaction time zone (step S28).
The storage battery information including the state of the storage battery of the storage battery system 117 after discharge is acquired by the storage battery information acquisition unit 64 and stored and stored in the storage battery information database 65 together with the time information. The storage battery information is notified to the charge / discharge determination unit 61 and used for the next charge / discharge determination.

Subsequently, the demand forecasting unit 51 of the retailer main body system 115A in the (X-1) -th transaction time zone is based on each customer's contract, the customer's own demand plan, demand history, etc. The power demand is predicted in the (X + 2) th transaction time zone of the entire system 114 (step S31).
As a result, the demand plan creation unit 52 incorporates the power demand prediction of the demand prediction unit 51 and the charge after discharge in the (X + 1) -th time zone in the storage battery system 117 into the plan, and the power demand plan for the entire customer system 114 under its control. And output to the supply and demand distribution plan creation unit 55 (step S32).

  In parallel with this, the power supply procurement amount calculation unit 53 calculates the power supply procurement amount from the power generation company in order to confirm the relative procurement amount (step S33). As a result, the supply plan creation unit 54 creates a supply plan for each customer system 114 based on the power demand plan created by the demand plan creation unit 52 and the power supply amount calculated by the power supply amount calculation unit 53. The data is output to the distribution plan creation unit 55.

As a result, the supply and demand distribution plan creation unit 55 creates a supply and demand distribution plan based on the power demand plan created by the demand plan creation unit 52 and the supply plan created by the supply plan creation unit 54 (step S34).
In addition, the supply and demand distribution plan creation unit 55 performs a bid corresponding to the Xth transaction time zone for the electric power transaction market 125 (step S35).

Further, the supply and demand distribution plan creation unit 55 submits a plan corresponding to the same day plan in the Xth transaction time zone to the power regional operation promotion organization (step S36).
When the bid transaction is executed, the supply and demand distribution plan creation unit 55 notifies the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B.

On the other hand, the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B notified of the supply / demand distribution plan is the first after the gate close time GC (X + 2) of the power transaction market 125 corresponding to the (X + 2) th transaction time zone. In the X transaction time zone, based on the supply and demand distribution plan, a charge / discharge determination is made in the (X + 2) th transaction time zone of the market one hour ago (step S37).
Specifically, the charging / discharging determination unit 61 determines which of the three states at the time of charging described in step S17 described above is.

  Based on the determination result of the charge / discharge determination unit 61, when the charge / discharge instruction unit 62 determines the first state or the second state, the charge amount determined by the charge / discharge determination unit 61 is (X + 2). ) Instruct the storage battery group control unit 63 to charge in the transaction time zone, and in accordance with this charge instruction, the storage battery group control unit 63 controls the storage battery system 117 to charge in the (X + 2) th transaction time zone. This is performed (step S38).

  At this time, the charge / discharge instruction unit 62 notifies the demand plan creation unit 52 of the retailer main body system 115A that the charge instruction has been given in the (X + 2) th transaction time zone, and also instructs the charge / discharge instruction database 66 to charge. The contents and instruction time are stored in association with each other.

As a result of the control of the storage battery group control unit 63, when charging is required, the storage battery system 117 is charged in the (X + 2) th transaction time zone (step S39).
The storage battery information including the state of the storage battery of the storage battery system 117 after charging is acquired by the storage battery information acquisition unit 64 and stored and stored in the storage battery information database 65 together with the time information.
The storage battery information is notified to the charge / discharge determination unit 61 and used for the next charge / discharge determination.

  As described above, according to the present embodiment, when it is determined that a shortage of imbalance occurs, the transaction time zone in which the imbalance actually occurs due to the power charged in the storage battery system 117 in advance. In the case of the example of FIG. 11, it is possible to avoid insufficient imbalance in the (X + 1) th transaction time zone.

  In the case of the example in FIG. 11, the storage battery system 117 can be charged or discharged in the Xth trading time zone, the (X + 1) th trading time zone, and the (X + 2) trading time zone. This can improve the operation cost.

Next, a procedure for avoiding excessive imbalance will be described more specifically.
FIG. 12 is an explanatory diagram of an avoidance process procedure at the time of excessive imbalance by the storage battery system.
Here, it is assumed that the storage battery system 117 is charged in the initial state (the (X-3) transaction time zone in which an 11-hour previous market bid corresponding to the Xth transaction time zone is performed).

  In the (X-3) th transaction time period, the demand forecasting unit 51 of the retailer main body system 115A is the entire customer system 114 under its control based on each customer's contract, the customer's own demand plan, demand history, etc. The power demand prediction in the X-th transaction time zone is performed (step S41).

  As a result, the demand plan creation unit 52 creates a power demand plan for the entire customer system 114 under control by incorporating the power demand prediction of the demand prediction unit 51 and the initial discharge of the storage battery system 117 into the plan, and a supply and demand distribution plan creation unit (Step S42).

  In parallel with this, the power supply procurement amount calculation unit 53 calculates the power supply procurement amount from the power generation company in order to confirm the relative procurement amount (step S43). As a result, the supply plan creation unit 54 creates a supply plan for each customer system 114 based on the power demand plan created by the demand plan creation unit 52 and the power supply amount calculated by the power supply amount calculation unit 53. The data is output to the distribution plan creation unit 55.

  As a result, the supply and demand distribution plan creation unit 55 creates a supply and demand distribution plan based on the power demand plan created by the demand plan creation unit 52 and the supply plan created by the supply plan creation unit 54 (step S44).

In addition, the supply and demand distribution plan creation unit 55 performs a bid corresponding to the Xth transaction time zone for the power transaction market 125 (step S45).
Further, the supply and demand distribution plan creation unit 55 submits a plan corresponding to the same day plan in the X-th transaction time zone to the electric power wide area operation promotion organization (step S46).
When the bid transaction is executed, the supply and demand distribution plan creation unit 55 notifies the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B.

On the other hand, the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B notified of the supply / demand distribution plan is the first (X) after the gate close time GC (X) of the power transaction market 125 corresponding to the Xth transaction time zone. -2) In the transaction time zone, a charge / discharge determination is made in the Xth transaction time zone in the market one hour ago based on the supply and demand distribution plan (step S47).
Specifically, the charge / discharge determination unit 61 determines which of the following three states is present.

  The first state is a state in which no surplus imbalance is expected. In this first state, it is determined that the discharge should be performed with a discharge amount corresponding to the entire initial discharge amount incorporated in the plan in step S42.

  The second state is a state where surplus imbalance is expected to occur, but the surplus imbalance amount is within the range of the initial discharge amount incorporated in the plan in step S42. In this second state, it is determined that charging should be performed with a discharge amount corresponding to an amount obtained by subtracting the surplus imbalance amount from the initial discharge amount incorporated in the plan in step S12.

  In the third state, surplus imbalance is expected to occur, but the surplus imbalance amount exceeds the initial discharge amount incorporated in the plan in step S42. In the third state, it is determined that the discharge should not be performed.

  Based on the determination result of the charge / discharge determination unit 61, when the charge / discharge instruction unit 62 determines the first state or the second state, the charge amount determined by the charge / discharge determination unit 61 is the Xth transaction. The storage battery group control unit 63 is instructed to discharge in the time zone, and the storage battery group control unit 63 performs control so that the storage battery system 117 is discharged in the Xth transaction time zone in accordance with the discharge instruction (step S48). ).

  At this time, the charge / discharge instruction unit 62 notifies the demand plan creation unit 52 of the retailer main body system 115A that the discharge instruction has been made in the X-th transaction time zone, and the contents of the discharge instruction to the charge / discharge instruction database 66. And the instruction time are stored in association with each other.

As a result of the control of the storage battery group control unit 63, when the discharge needs to be performed, the storage battery system 117 is discharged in the Xth transaction time zone (step S49).
The storage battery information including the state of the storage battery of the storage battery system 117 after discharge is acquired by the storage battery information acquisition unit 64 and stored and stored in the storage battery information database 65 together with the time information.
The storage battery information is notified to the charge / discharge determination unit 61 and used for the next charge / discharge determination.

Subsequently, the demand forecasting unit 51 of the retailer main body system 115A in the (X-2) th transaction time zone is under the control of each customer based on the contract of each customer, the customer's own demand plan, demand history, etc. The power demand prediction in the (X + 1) th transaction time zone of the entire system 114 is performed (step S51).
Thereby, the demand plan preparation part 52 is subordinate according to the electric power demand prediction of the demand prediction part 51, and the discharge instruction (equivalent to the latest charge / discharge instruction before execution) corresponding to the Xth transaction time zone corresponding to the storage battery system 117. A power demand plan for the entire customer system 114 is created and output to the supply and demand distribution plan creation unit 55.

  In parallel with this, the power supply procurement amount calculation unit 53 calculates the power supply procurement amount from the power generation company in order to confirm the relative procurement amount (step S52). As a result, the supply plan creation unit 54 creates a supply plan for each customer system 114 based on the power demand plan created by the demand plan creation unit 52 and the power supply amount calculated by the power supply amount calculation unit 53. The data is output to the distribution plan creation unit 55.

As a result, the supply and demand distribution plan creation unit 55 creates a supply and demand distribution plan based on the power demand plan created by the demand plan creation unit 52 and the supply plan created by the supply plan creation unit 54 (step S53).
Further, the supply and demand distribution plan creation unit 55 makes a bid corresponding to the (X + 1) th transaction time zone for the power transaction market 125 (step S54).
Further, the supply and demand distribution plan creation unit 55 submits a plan corresponding to the current day plan in the (X + 1) th transaction time zone to the electric power wide area operation promotion organization (step S55).
When the bid transaction is executed, the supply and demand distribution plan creation unit 55 notifies the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B.

On the other hand, the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B notified of the supply / demand distribution plan is the first after the gate close time GC (X + 1) of the power transaction market 125 corresponding to the (X + 1) th transaction time zone. (X-1) In the transaction time zone, charge / discharge determination in the Xth transaction time zone in the market one hour ago is performed based on the supply and demand distribution plan (step S56).
Specifically, the charging / discharging determination unit 61 determines which of the following two states is present.

  The first state is a state where surplus imbalance is expected to occur. In this first state, it is determined that charging is to be performed with a charge amount corresponding to the surplus imbalance amount.

  The second state is a state in which no surplus imbalance is expected to occur. In this second state, it is determined that charging should not be performed.

  Based on the determination result of the charge / discharge determination unit 61, the charge / discharge instruction unit 62 corresponds to the surplus imbalance amount that is the charge amount determined by the charge / discharge determination unit 61 when it is determined to be in the first state. The storage battery group control unit 63 is instructed to charge the amount of discharge to be charged in the (X + 1) th transaction time zone, and the storage battery group control unit 63 follows the charge instruction, and the storage battery system 117 is in the (X + 1) th transaction time zone. In step S57, control is performed so as to charge the battery.

  At this time, the charge / discharge instruction unit 62 notifies the demand plan creation unit 52 of the retailer main body system 115A that the charge instruction has been made in the (X + 1) th transaction time zone, and also instructs the charge / discharge instruction database 66 to charge. The contents and instruction time are stored in association with each other.

As a result of the control of the storage battery group control unit 63, when charging is required, the storage battery system 117 is charged in the (X + 1) th transaction time zone (step S58).
The storage battery information including the state of the storage battery of the storage battery system 117 after charging is acquired by the storage battery information acquisition unit 64 and stored and stored in the storage battery information database 65 together with the time information. The storage battery information is notified to the charge / discharge determination unit 61 and used for the next charge / discharge determination.

Subsequently, the demand forecasting unit 51 of the retailer main body system 115A in the (X-1) -th transaction time zone is based on each customer's contract, the customer's own demand plan, demand history, etc. The power demand prediction in the (X + 2) th transaction time zone of the entire system 114 is performed (step S61).
As a result, the demand plan creation unit 52 incorporates into the plan the power demand prediction of the demand prediction unit 51 and the discharge (re-discharge) after charging in the (X + 1) -th time zone in the storage battery system 117 as a whole. Is generated and output to the supply and demand distribution plan creation unit 55 (step S62).

  In parallel with this, the power supply procurement amount calculation unit 53 calculates the power supply procurement amount from the power generation company in order to confirm the relative procurement amount (step S63). As a result, the supply plan creation unit 54 creates a supply plan for each customer system 114 based on the power demand plan created by the demand plan creation unit 52 and the power supply amount calculated by the power supply amount calculation unit 53. The data is output to the distribution plan creation unit 55.

As a result, the supply and demand distribution plan creation unit 55 creates a supply and demand distribution plan based on the power demand plan created by the demand plan creation unit 52 and the supply plan created by the supply plan creation unit 54 (step S64).
Further, the supply and demand distribution plan creation unit 55 makes a bid corresponding to the (X + 2) th transaction time zone for the electric power transaction market 125 (step S65).
Furthermore, the supply and demand distribution plan creation unit 55 submits a plan corresponding to the current day plan of the (X + 2) th transaction time zone to the electric power wide area operation promotion organization (step S66).
When the bid transaction is executed, the supply and demand distribution plan creation unit 55 notifies the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B.

On the other hand, the charge / discharge determination unit 61 of the storage battery charge / discharge control system 15B notified of the supply / demand distribution plan is the first after the gate close time GC (X + 2) of the power transaction market 125 corresponding to the (X + 2) th transaction time zone. In the X transaction time zone, charge / discharge determination of the (X + 2) th transaction time zone in the market one hour ago is performed based on the supply and demand distribution plan (step S67).
Specifically, the charge / discharge determination unit 61 determines which of the three states at the time of discharge described in step S47 described above is.

  Based on the determination result of the charge / discharge determination unit 61, when the charge / discharge instruction unit 62 determines the first state or the second state, the charge amount determined by the charge / discharge determination unit 61 is (X + 2). ) Instruct the storage battery group control unit 63 to discharge in the trading time zone, and in accordance with this discharge instruction, the storage battery group control unit 63 controls the storage battery system 117 to discharge in the (X + 2) th trading time zone. This is performed (step S68).

  At this time, the charge / discharge instruction unit 62 notifies the demand plan creation unit 52 of the retailer main body system 115A that the discharge instruction has been made in the (X + 2) th transaction time zone, and also instructs the charge / discharge instruction database 66 to perform the discharge instruction. The contents and instruction time are stored in association with each other.

As a result of the control of the storage battery group control unit 63, when the discharge needs to be performed, the storage battery system 117 is discharged in the (X + 2) th transaction time zone (step S69).
The storage battery information including the state of the storage battery of the storage battery system 117 after charging is acquired by the storage battery information acquisition unit 64 and stored and stored in the storage battery information database 65 together with the time information.
The storage battery information is notified to the charge / discharge determination unit 61 and used for the next charge / discharge determination.
As described above, according to the present embodiment, when it is determined that surplus imbalance occurs, the transaction time zone in which imbalance actually occurs due to the power previously discharged to the storage battery system 117. (In the case of the example of FIG. 12, it is possible to avoid surplus imbalance in the (X + 1) th transaction time zone).

  Also in the case of the example of FIG. 12, as in the case of the example of FIG. 11, the storage battery system 117 is discharged in the Xth trading time zone, the (X + 1) th trading time zone, and the (X + 2) trading time zone. Alternatively, the charging operation can be performed, the operation efficiency can be improved, and the operation cost can be reduced.

As described above, according to the present embodiment, the utilization efficiency of the storage battery system (particularly, the number of times of charge / discharge of the storage battery system 117 per day) can be further improved, and the initial cost of system installation can be increased early. It becomes possible to collect.
In addition, it is possible to further increase profits while supplying power supply and demand during system operation.

  The operation plan creation support device (particularly the operation plan creation support device main body) has a hardware configuration using a control device such as an MPU and a normal computer equipped with a storage device such as a ROM (Read Only Memory) and a RAM. ing.

  The program executed in the storage battery control system of this embodiment (specifically, the retailer main body system 115A and the storage battery charge / discharge control system 115B) is a CD-ROM in an installable or executable file. The program may be provided by being recorded on a computer-readable recording medium such as a flexible disk (FD), a CD-R, or a DVD (Digital Versatile Disk).

  Moreover, you may comprise so that the program run with the storage battery control system of this embodiment may be provided by storing on the computer connected to networks, such as the internet, and downloading via a network. Moreover, you may comprise so that the program performed with the storage battery control system of this embodiment may be provided or distributed via networks, such as the internet.

  Moreover, you may comprise so that the program of the storage battery control system of this embodiment may be previously incorporated in ROM etc. and provided.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 11 Storage battery apparatus 12 Power converter 51 Demand prediction part 52 Demand plan preparation part 53 Power supply amount calculation part 54 Supply plan preparation part 55 Supply / demand distribution plan preparation part 61 Charge / discharge judgment part 62 Charge / discharge instruction part 63 Storage battery group control part 64 Storage battery Information acquisition unit 65 Storage battery information database 66 Charge / discharge instruction database 100 Power transaction system 111 Power generation company system 112 System operator system 113 Customer facility 114 Customer system 115 Retailer system 115A Retailer main system 115B Storage battery charge / discharge control System 116 Electricity exchange system 117 Storage battery system 121 Power generation company 122 System company 123 Retailer 124 Customer 125 Electricity trading market

Claims (7)

It is possible to divide the day into multiple trading hours and use the power trading system that performs power trading for each trading time, and store the power to be installed on the customer side and supplied to the consumer In a storage battery control system for controlling a storage battery system,
A first discharge instruction for causing the storage battery system to discharge, or a first charge instruction for causing the storage battery system to be charged in a first transaction time zone,
When the first discharge instruction is given, charging for performing charging in the second transaction time period after the first discharge instruction is made until the start time of the second transaction time period It performed instructed to the power storage battery system, considering charging amount corresponding to the charging instructions for performing a second discharge instruction in the third transaction time zone set to the second transaction time zone later Set up a discharge plan, give the second discharge instruction to the storage battery system,
When the first charging instruction is given, after the first charging instruction is given, for discharging in the second trading time zone during a period until the start time of the second trading time zone It was discharged instruction to said power storage battery system, considering the discharge amount corresponding to the discharge instruction for performing a second charging instruction in the third transaction time zone set to the second transaction time zone later The storage battery control system provided with the transaction setting instruction | indication part which sets the charge plan which performed and performs the said 2nd charge instruction | indication with respect to the said storage battery system. The storage battery system includes a storage battery capable of charging corresponding to the charging plan within one transaction time zone and capable of discharging corresponding to the discharging plan within one transaction time zone.
The storage battery control system according to claim 1. The storage battery can be charged from a predetermined discharge state to a predetermined charge state within one transaction time zone, and can be discharged from the predetermined charge state to the predetermined discharge state within one transaction time zone. Is,
The storage battery control system according to claim 2. The secondary battery constituting the storage battery includes a lithium metal compound containing at least one metal element selected from the group consisting of cobalt, nickel, and manganese, and the lithium metal compound is LiaNibCocMndO ₂ (provided that the molar ratios a, b , C and d are 0 ≦ a ≦ 1.1, b + c + d = 1), a positive electrode including a positive electrode active material-containing layer, a negative electrode including a titanium-containing metal composite oxide, and a non-aqueous solvent including a non-aqueous solvent. Configured as a lithium ion battery comprising an electrolyte,
The storage battery control system according to claim 2 or claim 3. The secondary battery constituting the storage battery includes a lithium metal compound containing at least one metal element selected from the group consisting of cobalt, nickel, and manganese, and the lithium metal compound is LiaNibCocMndO ₄ (provided that the molar ratios a, b , C and d are 0 ≦ a ≦ 1.1, b + c + d = 2), a positive electrode including a positive electrode active material-containing layer, a negative electrode including a titanium-containing metal composite oxide, and a non-aqueous solvent including a non-aqueous solvent. Configured as a lithium ion battery comprising an electrolyte,
The storage battery control system according to claim 2 or claim 3. It is possible to divide the day into multiple trading hours and use the power trading system that performs power trading for each trading time, and store the power to be installed on the customer side and supplied to the consumer A method executed by a storage battery control system for controlling a storage battery system,
In the first transaction time zone, a process of giving a first discharge instruction or a first discharge instruction to the storage battery system in the second transaction time zone;
In the third transaction time zone set after the second transaction time zone in the period up to the start time of the second transaction time zone after the first discharge instruction or the first discharge instruction is made. The first discharge instruction for setting the discharge plan in consideration of the charge amount corresponding to the first discharge instruction for performing the second discharge instruction, or for performing the second discharge instruction in the third transaction time zone A process of setting a charging plan that takes into account the amount of discharge corresponding to
A process of giving the second discharge instruction or the second discharge instruction to the storage battery system;
With a method. It is possible to divide the day into multiple trading hours and use the power trading system that performs power trading for each trading time, and store the power to be installed on the customer side and supplied to the consumer A storage battery control system for controlling a storage battery system by a computer,
The computer,
Means for performing a first discharge instruction for causing the storage battery system to discharge or a first charge instruction for causing the storage battery system to perform charging in a first transaction time zone;
When the first discharge instruction is given, a charge instruction for charging in the second transaction time period after the first discharge instruction is made until the start time of the second transaction time period It was carried out with respect to the energy storage battery system, considering charging amount corresponding to the charging instructions for performing a second discharge instruction in the third transaction time zone set to the second transaction time zone after discharge Means for setting a plan and giving the second discharge instruction to the storage battery system;
Discharge for causing discharge in the second transaction time period during the period from when the first charge instruction is made to the start time of the second transaction time period when the first charge instruction is performed It performed instructed to the power storage battery system, considering the discharge amount corresponding to the discharge instruction for performing a second charging instruction in the third transaction time zone set to the second transaction time zone later Means for setting a charging plan and instructing the second charging instruction to the storage battery system;
Program to make it work.

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