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WO2018105645A1 - Système de commande de fonctionnement et procédé de commande associé - Google Patents

Système de commande de fonctionnement et procédé de commande associé Download PDF

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Publication number
WO2018105645A1
WO2018105645A1 PCT/JP2017/043785 JP2017043785W WO2018105645A1 WO 2018105645 A1 WO2018105645 A1 WO 2018105645A1 JP 2017043785 W JP2017043785 W JP 2017043785W WO 2018105645 A1 WO2018105645 A1 WO 2018105645A1
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WO
WIPO (PCT)
Prior art keywords
storage system
power storage
operation pattern
power
time
Prior art date
Application number
PCT/JP2017/043785
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English (en)
Japanese (ja)
Inventor
園 駱
中村　新
梶谷　浩司
Original Assignee
日本電気株式会社
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Filing date
Publication date
Application filed by 日本電気株式会社 filed Critical 日本電気株式会社
Priority to JP2018555034A priority Critical patent/JPWO2018105645A1/ja
Publication of WO2018105645A1 publication Critical patent/WO2018105645A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to an operation control system for controlling charge / discharge operation of a power storage system and a control method therefor.
  • storage batteries are used not only in information processing equipment such as personal computers and mobile phones, communication equipment, etc., but also as power sources for electric assist bicycles, electric cars, hybrid cars, and the like. Furthermore, the storage battery is also used for storing electric power generated by a renewable power source such as a solar battery. The aforementioned renewable power sources are being introduced to realize a low-carbon society associated with global warming.
  • the product life depends on the battery capacity of the storage battery.
  • the battery capacity of a storage battery decreases in the following cases.
  • SOC refers to the ratio of the charged amount of electricity to the storage capacity of the storage battery.
  • storage of a storage battery refers to a state in which the storage battery is left without being charged or discharged.
  • a power storage system including a storage battery, it is desirable to suppress as much as possible the shortening of the product life caused by the operation method and the like while supplying the power desired by the user.
  • Patent Document 1 calculates a predicted amount of deterioration caused by charging a storage battery based on the frequency of charging / discharging operations, the magnitude of charging current, the remaining charge time (storage time in a high SOC state), and the like. .
  • the above calculation is performed, and the battery remaining amount and the required charge amount of the storage battery are calculated, and the charge start time is calculated based on the remaining battery amount and the required charge amount while minimizing the predicted amount of deterioration.
  • a power storage system that determines the power consumption is described.
  • Patent Document 2 describes that the charging operation is controlled in two stages in order to shorten the storage time in a high temperature state and a high SOC state where the progress of deterioration is large.
  • the first threshold value (based on the storage battery temperature or the ambient temperature of the storage battery such as the vehicle room temperature or the atmospheric temperature, the charging start time of the storage system, and the use start time of the user storage system) SOC1) and the second threshold (SOC2) are set.
  • the first stage charging operation (initial charging) is stopped at the first threshold, and the charging is resumed to charge to a high SOC. Charging is stopped at the second threshold value.
  • JP 2013-210340 A International Publication No. 2010/084599 JP 2010-159661 A
  • Patent Documents 1 and 2 described above control only the charging operation of the storage battery, and do not consider the use state of the storage battery (discharge state of the storage battery). For this reason, in the techniques described in Patent Documents 1 and 2, the storage battery may stop discharging at a specific SOC where the progress of deterioration is large. In that case, since the storage battery is stored with a specific SOC whose progress of deterioration is large, the deterioration of the storage battery becomes large.
  • Patent Documents 1 and 2 are based on the premise that the storage battery is charged with electric power supplied from a generator mounted on the vehicle or a commercial power source (electric power system). Therefore, the techniques described in Patent Documents 1 and 2 are not suitable for a power storage system that operates in cooperation with a renewable power source whose power generation amount varies depending on the weather, for example, a solar power generation device.
  • Patent Document 3 describes a technique related to the present invention.
  • the present invention has been made in order to solve the problems of the background art as described above, and can be applied to a power storage system that operates in cooperation with a solar power generation device while suppressing the progress of deterioration of the power storage system.
  • An object is to provide an operation control system and a control method thereof.
  • the operation control system of the present invention is an operation control system for controlling the charge / discharge operation of the power storage system,
  • a monitoring unit for acquiring information indicating a state of the power storage system and an operating environment;
  • An input unit for inputting a user use request that is a scheduled power usage amount of the user of the power storage system;
  • Based on the information acquired by the monitoring unit and the user use request input using the input unit generate a plurality of operation patterns that satisfy the user use request and can be operated by the power storage system, and
  • An operation pattern calculation unit that calculates an amount of deterioration indicating the degree of progress of deterioration of the power storage system in the operation pattern, and selects an operation pattern with the least amount of deterioration,
  • a control unit for controlling the charge / discharge operation of the power storage system according to the operation pattern selected by the operation pattern calculation unit;
  • the operation control system of the present invention is an operation control system for controlling the charge / discharge operation of the power storage system,
  • a monitoring unit for acquiring information indicating a state of the power storage system and an operating environment;
  • An input unit for inputting a user use request that is a scheduled power usage amount of the user of the power storage system;
  • An operation pattern calculation unit that generates a plurality of operation patterns that can be operated by the power storage system and that satisfies the user use request based on the information acquired by the monitoring unit and the user use request input using the input unit.
  • An operation pattern selection unit that presents a plurality of operation patterns generated by the operation pattern calculation unit in a selectable manner; A control unit for controlling the charge / discharge operation of the power storage system according to the operation pattern selected using the operation pattern selection unit; Have The driving pattern calculation unit Based on the deterioration amount calculated for each of the plurality of operation patterns, an operation mode is set for at least one of the plurality of operation patterns, The operation pattern selection unit An operation control system that presents the operation pattern and an operation mode corresponding to the operation pattern in association with each other.
  • the operation control method of the present invention is an operation control method for controlling the charge / discharge operation of the power storage system, Obtaining information indicating the state of the power storage system and the operating environment of the power storage system; Obtaining a user usage request that is a scheduled power usage amount of the user of the power storage system; Based on the information indicating the state and operating environment of the power storage system, and the user use request, generate a plurality of operation patterns that satisfy the user use request and can be operated by the power storage system, Calculating an amount of deterioration indicating a degree of progress of deterioration of the power storage system in the plurality of operation patterns, Select the operation pattern with the least amount of deterioration, In this method, the charge / discharge operation of the power storage system is controlled according to the selected operation pattern.
  • an operation control method for controlling the charge / discharge operation of the power storage system Obtaining information indicating the state and operating environment of the power storage system; Obtaining a user usage request that is a scheduled power usage amount of the user of the power storage system; Based on the information indicating the state of the power storage system and the operating environment of the power storage system, and the user use request, generate a plurality of operation patterns that can be operated by the power storage system that satisfy the user use request, Presenting the plurality of driving patterns to the user and causing the user to select the driving pattern,
  • the charge / discharge operation of the power storage system is controlled according to the operation pattern selected by the user.
  • an operation control system that can be applied to a power storage system that operates in cooperation with a solar power generation device, while enabling the progress of deterioration of the power storage system to be suppressed.
  • 7 is a table showing an example of a cycle deterioration factor set based on the graphs shown in FIGS. 6A to 6C. It is a graph which shows the example of a measurement of storage degradation in the ambient temperature of an electrical storage system. It is a graph which shows the example of a measurement of storage degradation in the ambient temperature of an electrical storage system. It is a graph which shows the example of a measurement of storage degradation in the ambient temperature of an electrical storage system. It is a graph which shows the example of a measurement of storage degradation in the ambient temperature of an electrical storage system. It is a graph which shows the example of a measurement of storage degradation in the ambient temperature of an electrical storage system. It is a graph which shows the example of a measurement of storage degradation in the ambient temperature of an electrical storage system.
  • 9 is a table showing an example of a storage deterioration factor set based on the graphs shown in FIGS. 8A to 8F. It is a graph which shows an example of the 1st operation pattern of the electrical storage system at the time of fine weather. It is a graph which shows an example of the 2nd operation pattern of the electrical storage system at the time of fine weather. It is a graph which shows an example of the 3rd operation pattern of the electrical storage system at the time of fine weather. It is a graph which shows an example of the driving
  • FIG. 1 is a block diagram illustrating a configuration example of an operation control system according to the first embodiment.
  • the operation control system 10 of the first embodiment includes a monitoring unit 100, an input unit 110, an operation pattern calculation unit 120, and a control unit 130.
  • the monitoring unit 100 acquires information indicating the state of the power storage system 1 to be controlled and the operating environment.
  • the input unit 110 is provided to input a scheduled power usage amount (hereinafter referred to as “user usage request”) of the user of the power storage system 1.
  • the operation pattern calculation unit 120 generates an operation pattern of the power storage system 1 based on the information acquired by the monitoring unit 100 and the user use request obtained by the input unit 110.
  • Control unit 130 controls the charge / discharge operation of power storage system 1 based on the operation pattern generated by operation pattern calculation unit 120. Further, the control unit 130 controls the discharge operation of PV (described later) based on the operation pattern generated by the operation pattern calculation unit 120.
  • the user use request may further include information indicating “the scheduled power usage time of the user of the power storage system 1” in addition to the above “scheduled power usage of the user of the power storage system 1”. .
  • the power storage system 1 has a configuration including one storage battery, a configuration in which a plurality of storage batteries are connected in series or in parallel, or a configuration in which a plurality of storage battery groups including a plurality of storage batteries connected in series are connected in parallel. It is.
  • the power storage system 1 is assumed to include a current detection circuit, a measurement circuit, a temperature sensor, and a protection circuit.
  • the current detection circuit is provided to detect a charging current and a discharging current of a storage battery provided in the power storage system 1.
  • the measurement circuit is provided for measuring the SOC and the inter-terminal voltage of the storage battery provided in the power storage system 1.
  • the temperature sensor is provided for measuring the temperature of the power storage system 1.
  • the protection circuit is provided to protect the storage battery included in the power storage system 1.
  • the protection circuit is a well-known circuit for protecting against overcharge and overdischarge of the storage battery, overcurrent at the time of charge / discharge of the storage battery, abnormal temperature rise of the storage battery, and the like.
  • the “state” of the power storage system 1 is, for example, at least one of the remaining capacity (specifically indicated by SOC) of the power storage system 1 and the temperature. It is assumed that the monitoring unit 100 holds in advance information indicating the characteristics of the power storage system 1 such as the storage capacity, the nominal voltage, and SOC that deteriorates during storage, or information indicating the characteristics of the storage battery included in the power storage system 1. .
  • the “driving environment” of the power storage system 1 is, for example, weather information indicating the weather or weather forecast information indicating the weather forecast.
  • the weather information and weather forecast information are information necessary when the power storage system 1 is operated in cooperation with, for example, a solar power generation device (Photo Voltaic, hereinafter referred to as “PV”) (not shown).
  • PV Photo Voltaic
  • At least one of sunshine hours, solar radiation amount and solar power generation amount is a network such as the Internet from a weather forecasting organization (such as a business operator or the Japan Meteorological Agency) that provides forecast information of solar radiation amount and solar power generation amount It can be obtained through.
  • a weather forecasting organization such as a business operator or the Japan Meteorological Agency
  • what is necessary is just to acquire at least one of a solar radiation amount prediction and a solar power generation amount prediction among the weather forecast information from the above-mentioned weather forecast organization (an operator, the Meteorological Agency, etc.) via a network such as the Internet.
  • the predicted value of the wind direction, wind speed, or power generation amount as the operating environment is obtained via a network such as the Internet from a wind power generation device or a weather forecasting organization such as the Japan Meteorological Agency that provides the prediction information. Get it.
  • the control unit 130 causes the PV to supply the user with the power generated by the PV. More specifically, when the electric power generated by the PV satisfies the “user's own power usage plan amount of the power storage system 1” requested by the user, the control unit 130 (described later) is generated by the PV by the PV. Assume that power is supplied to the user.
  • the control unit 130 causes the power storage system 1 to supply the user with the power charged in the power storage system 1. More specifically, when the electric power generated by the PV does not satisfy the “user's own power usage plan of the power storage system 1” requested by the user, the control unit 130 (described later) connects the power storage system 1 to the power storage system 1. It is assumed that the user is supplied with the electric power charged in.
  • the operation control system 10 shown in FIG. 1 can be realized by a CPU (Central Processing Unit), a storage device, various logic circuits, and an information processing device (computer).
  • the information processing apparatus includes communication means for transmitting / receiving information to / from the power storage system 1 and transmitting / receiving information to / from a weather forecasting organization via a network such as the Internet.
  • the information processing apparatus realizes a function as the operation control system 10 (20) of the present invention, which will be described later, by the CPU executing processing according to a program stored in the storage device.
  • the operation pattern calculation unit 120 stores the power storage system 1 based on the information indicating the state and operation environment of the power storage system 1 acquired by the monitoring unit 100 and the user use request. A plurality of operation patterns that can be operated by the system 1 are generated. The operation pattern of the power storage system 1 is generated by the operation pattern calculation unit 120, for example, in units of one day.
  • the operation pattern calculation unit 120 As described above, the operation pattern calculation unit 120 generates a plurality of operation patterns of the power storage system 1.
  • the operation pattern calculation unit 120 calculates a deterioration amount indicating the degree of progress of deterioration of the power storage system 1 in each operation pattern for each operation pattern. In addition, the operation pattern calculation unit 120 selects an operation pattern with the least amount of deterioration. That is, the operation pattern calculation unit 120 selects an operation pattern with the least progress of deterioration of the power storage system 1.
  • the operation pattern of the power storage system 1 is generated by the following process, for example.
  • the plurality of operation patterns of the power storage system 1 are generated by the following procedure including the following first process to fifth process.
  • the driving pattern calculation unit 120 acquires a user use request and weather forecast information.
  • the operation pattern calculation unit 120 predicts “a time period during which PV generated power can be used”.
  • the operation pattern calculation unit 120 calculates a “charge start time” and a “charge end time”.
  • the operation pattern calculation unit 120 determines “a time period during which the power storage system 1 is operated”.
  • the operation pattern calculation unit 120 sets “discharge time before storage”.
  • the driving pattern calculation unit 120 generates a driving pattern.
  • the driving pattern calculation unit 120 acquires a user use request and weather forecast information.
  • the driving pattern calculation unit 120 first includes information indicating the state of the power storage system 1 acquired by the monitoring unit 100 before the driving pattern creation date (for example, 22:00 on the previous day of the creation date) and the driving environment.
  • the next day weather forecast information received from the weather forecasting organization is acquired from the monitoring unit 100.
  • the driving pattern calculation unit 120 acquires a user use request for the next day input by the user using the input unit 110.
  • the user's own power use scheduled time of the power storage system 1” included in the user use request may be indicated as “a time zone in which the user uses power”.
  • the “user's own power usage plan (W) of the power storage system 1 included in the user usage request” is “the power storage system 1 1 can be indicated by the value of the current supplied from 1 to the user (A).
  • current value (A)” and “amount of electricity (Ah)” are in a proportional relationship.
  • the user use request indicates, for example, from 7 o'clock to 23 o'clock as the “time period in which the user uses power”. In addition, the user use request indicates, for example, 5 Ah as “the amount of electricity used by the user”.
  • the operation pattern calculation unit 120 predicts “a time period during which PV generated power can be used”.
  • the operation pattern calculation unit 120 predicts “a time period during which PV generated power can be used” based on weather forecast information for the next day.
  • the operation pattern calculation unit 120 stores in advance a “time period in which PV generated power can be used”.
  • the “time period in which PV generated power can be used” corresponds to the weather indicated by the weather forecast information for the next day (for example, each of fine weather, cloudy weather, and rainy weather).
  • the driving pattern calculation unit 120 stores in advance the “time period during which PV generated power can be used” corresponding to the case where the weather indicated by the weather forecast information on the next day is sunny, as “8:00 to 18:00”. Further, for example, the driving pattern calculation unit 120 stores in advance the “time period in which the generated power of PV can be used” corresponding to the case where the weather indicated by the weather forecast information on the next day is cloudy as “9:00 to 15:00”. Yes. Further, for example, the driving pattern calculation unit 120 stores in advance that there is no “time zone in which the generated power of PV can be used” corresponding to the case where the weather indicated by the weather forecast information on the next day is rainy.
  • the operation pattern calculation unit 120 predicts “a time period in which PV generated power can be used” based on weather forecast information (sunshine hours, solar radiation amount prediction, and solar power generation amount prediction) as follows. .
  • the operation pattern calculation unit 120 predicts “8:00 to 18:00” as “a time zone in which PV generated power can be used” when the weather indicated by the weather forecast information on the next day is clear. In addition, when the weather indicated by the weather forecast information on the next day is cloudy, the operation pattern calculation unit 120 predicts “9:00 to 15:00” as “a time zone in which PV generated power can be used”. In addition, when the weather indicated by the weather forecast information on the next day is rainy, the driving pattern calculation unit 120 predicts that there is no “time period in which PV generated power can be used”.
  • time periods when PV generated power can be used are examples. Based on weather forecast information (for example, solar radiation amount prediction or solar power generation amount prediction), a part of the “time period in which PV generated power can be used” indicates that the PV generated power is requested by the user. It may be determined that the “amount of electricity used by the user” is not satisfied. In this case, the operation pattern calculation unit 120 may predict that the user cannot use the generated power of the PV in the partial time zone.
  • weather forecast information for example, solar radiation amount prediction or solar power generation amount prediction
  • the operation pattern calculation unit 120 can shorten the “time period in which the PV generated power can be used”.
  • a time period during which PV generated power can be used” corresponding to clear sky is stored in advance as “8:00 to 18:00”.
  • weather forecast information for example, solar radiation amount prediction or solar power generation amount prediction
  • PV generated power from “18:00 to 18:00” out of “8:00 to 18:00”
  • the operation pattern calculation unit 120 may predict that the user cannot use PV generated power at “17:00 to 18:00”.
  • the “time period in which the generated power of PV can be used” corresponding to clear sky is predicted to be “8:00 to 17:00”.
  • the operation pattern calculation unit 120 calculates the charging start time of the power storage system 1 based on the user use request.
  • the operation pattern calculation unit 120 calculates the “charge end time” of the power storage system 1 based on the user use request.
  • the operation pattern calculation unit 120 calculates the “charging start time” of the power storage system 1 based on the user use request. For example, in the case where the user use request indicates electricity consumption of 5 A per hour from 7:00 to 23:00, in order to shorten the storage time of the power storage system 1 in the high SOC state, at 7:00 (charge end time) The charging start time in each operation pattern is set so as to end the charging of the power storage system 1.
  • the operation pattern calculation unit 120 calculates the “charge start time” and the “charge end time”.
  • the operation pattern calculation unit 120 compares the earliest time in the “time zone in which the user uses power” with the earliest time in the “time zone in which the PV generated power can be used”.
  • the operation pattern calculation unit 120 determines that the earliest time in the “time period in which the user uses power” is earlier than the earliest time in the “time period in which the PV generated power can be used”. In this case, the driving pattern calculation unit 120 determines the earliest time in the “time period in which the user uses power” as the “charging end time”. In addition, operation pattern calculation unit 120 determines “charging start time” so that charging of power storage system 1 ends at “charging end time” (for example, the SOC of power storage system 1 reaches 100%). As described above, the operation pattern calculation unit 120 determines the “charge start time” and the “charge end time” of the power storage system 1.
  • the operation pattern calculation unit 120 determines that the earliest time in the “time period in which the user uses power” is not earlier than the earliest time in the “time period in which the PV generated power can be used”. In this case, the operation pattern calculation unit 120 further compares the latest time of the “time period in which the user uses power” with the latest time of the “time period in which the PV generated power can be used”.
  • the operation pattern calculation unit 120 determines that the latest time of the “time period in which the user uses power” is later than the latest time of the “time period in which the generated power of the PV can be used”. In this case, the operation pattern calculation unit 120 determines the latest time of the “time period in which the PV generated power can be used” as the “charging end time”. In addition, operation pattern calculation unit 120 determines “charging start time” so that charging of power storage system 1 ends at “charging end time” (for example, the SOC of power storage system 1 reaches 100%). As described above, the operation pattern calculation unit 120 determines the “charge start time” and the “charge end time” of the power storage system 1.
  • the operation pattern calculation unit 120 determines that the latest time in the “time period in which the user uses power” is not later than the latest time in the “time period in which the PV generated power can be used”.
  • the “time zone in which the user uses power” is included in the “time zone in which the generated power of the PV can be used”. That is, the user can use the power generated by the PV in all the “time period in which the user uses power”. For this reason, discharge from the power storage system 1 to the user is not performed. Therefore, the power storage system 1 does not need to be charged. Therefore, in this case, the “charge start time” and the “charge end time” of the power storage system 1 are not determined.
  • the operation pattern calculation unit 120 uses the earliest time (7 o'clock) of the “time period in which the user uses power” (7 o'clock to 23 o'clock) and “PV generated power can be used. Compare with the earliest time (8 o'clock) of “Time zone” (8 o'clock to 18 o'clock). As a result of this comparison, the operation pattern calculation unit 120 indicates that the earliest time (7 o'clock) of the “time period in which the user uses power” is the earliest time (8 o'clock) of the “time period in which the PV generated power can be used” It is judged that it is earlier.
  • the driving pattern calculation unit 120 determines the earliest time (7 o'clock) of the “time period in which the user uses power” as the “charging end time”. Further, the operation pattern calculation unit 120 ends the charging of the power storage system 1 at the “charge end time” (7 o'clock) (for example, the SOC of the power storage system 1 reaches 100%) ( For example, 3 o'clock) is determined. As described above, the operation pattern calculation unit 120 determines the “charge start time” and the “charge end time” of the power storage system 1.
  • the operation pattern calculation unit 120 is set to allow the user to supply power from the power storage system 1 at 7 o'clock to 8 o'clock and from 18 o'clock to 23 o'clock in each operation pattern.
  • the operation of the power storage system 1 is terminated when the power storage system 1 is completely discharged. In the time zone when the power storage system 1 has finished operating, power is supplied to the user from the power system.
  • the operation pattern calculation unit 120 determines the “time zone in which the power storage system 1 is operated”. Specifically, in the fourth process, the operation pattern calculation unit 120 sets a time zone excluding “a time zone in which the generated power of the PV can be used” out of “a time zone in which the user uses power” as “power storage”. It is determined as “the time period during which the system 1 is operated”.
  • the “time period in which the user uses power” included in the user use request acquired in the first process indicates “7:00 to 23:00”.
  • the “time period in which the PV generated power can be used” is predicted to be “8:00 to 18:00”.
  • the time zone (“7 o'clock to 8 o'clock” and “18 o'clock to 23 o'clock”) excluding “the time zone during which the user can use the power generated by the user” is “ The power generated by PV cannot be used. Therefore, the operation pattern calculation unit 120 determines “7 o'clock to 8 o'clock” and “18 o'clock to 23 o'clock” as “a time zone during which the power storage system 1 is operated”. Thereby, the power storage system 1 allows the user to supply power at “7 o'clock to 8 o'clock” and “18:00 to 23:00”.
  • the operation pattern calculation unit 120 ends the operation of the power storage system 1 when the power storage system 1 is completely discharged in the “time period during which the power storage system 1 is operated”. In the time zone when the power storage system 1 has finished operating, power is supplied to the user from the power system.
  • the operation pattern calculation unit 120 ends the operation of the power storage system 1 when the SOC of the power storage system 1 reaches 0% in the “time period during which the power storage system 1 is operated”. In this case, electric power is supplied to the user from the electric power system (not shown) in the latest time of the “time zone in which the electric storage system 1 is operated” from when the SOC of the electric storage system 1 reaches 0%. .
  • the operation pattern calculation unit 120 determines a “time zone in which the power storage system 1 is operated” based on the user use request. For example, if the user usage request shows electricity consumption of 5 A per hour from 7 o'clock to 23 o'clock, even if the next day is sunny, PV is generated from 7 o'clock to 8 o'clock and from 18 o'clock to 23 o'clock Unable to use the power. Therefore, the operation pattern calculation unit 120 is set to allow the user to supply power from the power storage system 1 at 7 o'clock to 8 o'clock and from 18 o'clock to 23 o'clock in each operation pattern. However, from 18:00 to 23:00, the operation of the power storage system 1 is terminated when the power storage system 1 is completely discharged. In the time zone when the power storage system 1 has finished operating, power is supplied to the user from the power system.
  • the operation pattern calculation unit 120 calculates a plurality of “discharge times before storage” of the power storage system 1 so as to be different from each other in the “time period in which the generated power of PV can be used”. Thereby, the operation pattern calculation unit 120 sets the discharge stop time of the power storage system 1 so that the SOC value at the time of storage of the power storage system 1 is different for each operation pattern in the time zone in which the power generated by the PV can be used. Set.
  • the operation pattern calculation unit 120 sets “discharge time before storage”.
  • the operation pattern calculation unit 120 calculates the “time period in which the power storage system 1 is operated” calculated in the fourth process and the “time period in which the PV generated power can be used” predicted in the second process. Compare
  • the operation pattern calculation unit 120 calculates a plurality of “discharge times before storage” when there is a time zone before the “time zone in which the generated power of the PV can be used” in the “time zone in which the power storage system 1 is operated”. calculate. At this time, the operation pattern calculation unit 120 includes a plurality of “storage” so as to be equal to or longer than the length of the time period before the “time period in which the generated power of the PV can be used” in the “time period in which the power storage system 1 is operated”. Each of the “previous discharge time” is calculated. Note that each of the plurality of “discharge times before storage” at this time is a time corresponding to a predetermined SOC.
  • the operation pattern calculation unit 120 sets “discharge time before storage” when there is no time zone before “time zone in which the generated power of PV can be used” in “time zone in which the power storage system 1 is operated”. do not do.
  • the driving pattern calculation unit 120 compares “7 o'clock to 8 o'clock” and “18:00 to 23:00” with “8 o'clock to 18 o'clock” predicted in the second process.
  • the operation pattern calculation unit 120 includes a “time zone in which the generated power of the PV can be used” (“7 hours to 8 hours” and “18:00 to 23:00”). From 8:00 to 18:00 "), it is determined that there is a previous time zone (" 7 to 8:00 "). At this time, the operation pattern calculation unit 120 calculates each of the “discharge time before storage” so as to be 1 hour or longer.
  • discharge time before storage is the difference from the SOC at the earliest time (charging end time) of the “time zone in which the power storage system 1 is operated” to a predetermined SOC at the time of storage, It is calculated by dividing by the rate of decrease of SOC per unit time when discharged.
  • the rate of decrease in SOC per hour when discharged at 5 A is 15%. This means that the SOC is reduced by 15% when the electricity storage system 1 discharges 5 Ah of electricity. Further, for example, it is assumed that the SOC of the power storage system 1 is 100% at 7 o'clock (charge end time). Further, it is assumed that “the amount of electricity used by the user” indicates 5 Ah.
  • the operation pattern calculation unit 120 calculates 1 hour as “discharge time before storage” by dividing 15% (difference between 100% and 85%) by 15%.
  • SOC 70% is determined in advance as a plurality of SOCs at the time of storage.
  • the operation pattern calculation unit 120 calculates 2 hours as “discharge time before storage” by dividing 30% (difference between 100% and 70%) by 15%.
  • the operation pattern calculation unit 120 generates an operation pattern. Specifically, the driving pattern calculation unit 120 operates the power storage system 1 in each time zone based on the results obtained in the first process, the second process, the third process, the fourth process, and the fifth process ( Storage, charge or discharge). Thereby, the driving pattern calculation unit 120 can generate a pattern (driving pattern) indicating the operation of the power storage system 1 in each time zone.
  • the operation pattern calculation unit 120 uses one result based on the results obtained in the first process to the fourth process. Generate driving patterns.
  • the operation pattern in this case is, for example, as shown in FIG.
  • the operation pattern calculation unit 120 uses the plurality of operation patterns based on the results obtained in the first process to the fifth process. Is generated.
  • the operation pattern calculation unit 120 calculates both the operation pattern when the “discharge time before storage” is “1 hour” and the operation pattern when the “discharge time before storage” is “2 hours”. Is generated.
  • the operation pattern calculation unit 120 generates a first operation pattern as shown in FIG. 10 as an operation pattern when the “discharge time before storage” is “1 hour”. Further, for example, the operation pattern calculation unit 120 generates the second operation pattern as shown in FIG. 11 as the operation pattern when the “discharge time before storage” is “2 hours”.
  • the power storage system 1 supplies power to the user from the power storage system 1 until it is completely discharged after 18:00.
  • the power storage system 1 supplies power to the user from the power storage system 1 until it is completely discharged after 18:00.
  • FIG.10 and FIG.11 shows, in the 1st driving
  • FIG. 11 it is shown that the discharge after 18:00 stops at 22:00. At this time, from 22:00 to 23:00, power is supplied to the user from another power system.
  • the operation pattern calculation unit 120 may further perform the following sixth process in addition to the above first to fifth processes.
  • the driving pattern calculation unit 120 newly generates a driving pattern in which the SOC value at the “charging end time” is changed based on the driving pattern generated in the fifth process.
  • the driving pattern calculation unit 120 sets the SOC value at “charging end time” from 100% to 85 based on the driving pattern shown in FIG. 10 (the driving pattern generated in the fifth process).
  • the operation pattern changed to% (the third operation pattern shown in FIG. 12) is generated.
  • the sixth process has been described above.
  • the operation pattern of the power storage system 1 is such that the charging operation is stopped when the SOC of the power storage system 1 reaches 85%, for example, than the operation pattern that uses the maximum rated capacity range of the power storage system 1.
  • such an operation pattern wastes the capacity (15%) of the power storage system 1, and is not a preferable operation pattern for a user who wants to use the capacity of the power storage system 1 to the maximum. Therefore, the capacity range (SOC range) used by the power storage system 1 may be changed in advance by, for example, designation by a user or the like. That is, the upper limit (for example, 100% or 85%) of the SOC of the power storage system 1 may be changed in advance by, for example, designation by a user or the like.
  • the operation patterns shown in FIGS. 10 to 13 are examples, and the state (charging, discharging or storing) of the power storage system 1 in the operation pattern does not need to be switched in units of one hour, in units of 15 minutes or units of 30 minutes. It may be switched with.
  • the said operation pattern is sufficient electric power that this PV satisfy
  • the amount of deterioration of the power storage system 1 in the operation pattern includes factors that cause deterioration of the power storage system 1 (for example, a charge rate, a charge time, a discharge rate, a discharge time, an SOC at the time of storage (storage SOC), a storage time, and an ambient temperature. Etc.) is calculated by the operation pattern calculation unit 120 for each operation pattern. At this time, the deterioration amount for each operation pattern is calculated according to the following equation (1) using a coefficient (deterioration factor) set based on an actually measured value measured in advance.
  • Deterioration amount (total factor) CC charge time ⁇ cycle deterioration factor + CV charge time ⁇ cycle deterioration factor + each SOC storage time ⁇ each storage deterioration factor + discharge time ⁇ cycle deterioration factor (1)
  • CC charging time is charging time by constant current (CC)
  • CV charging time is charging time by constant voltage (Constant Voltage: CV).
  • the storage battery normally starts charging in the CC mode, and charges in the CV mode when the inter-terminal voltage reaches the rated voltage.
  • Cycle deterioration is that the deterioration of battery performance proceeds according to the number of charge / discharge cycles.
  • the cycle deterioration factor is a coefficient (deterioration factor) given to the CC charging time, CV charging time, and discharging time.
  • the CV mode indicates a state where the voltage is constant.
  • the CC mode indicates a state where the current is constant.
  • the storage deterioration is a deterioration of battery performance in accordance with the SOC value when the power storage system 1 is stored.
  • the storage deterioration factor is a coefficient (deterioration factor) given to the SOC at the time of storage and its storage time. A method for setting the cycle deterioration factor and the storage deterioration factor will be described in an embodiment described later. The calculation of the deterioration amount of each of the plurality of operation patterns in the operation pattern calculation unit 120 has been described above.
  • the operation pattern calculation unit 120 extracts the smallest one of the deterioration amounts calculated for each of the plurality of operation patterns.
  • the operation pattern 120 selects an operation pattern corresponding to the extracted deterioration amount. The selection of the operation pattern with the least progress of deterioration of the power storage system 1 in the operation pattern calculation unit 120 has been described above.
  • FIG. 2 is a flowchart illustrating an example of a processing procedure of the operation control system according to the first embodiment.
  • the operation control system 10 first uses the monitoring unit 100 to display information indicating the state of the power storage system 1 such as the remaining capacity on the night before the operation pattern creation target day (for example, 22:00). Collect (step S11). Moreover, the operation control system 10 collects, for example, weather forecast information for the next day as information indicating the operation environment of the power storage system 1 using the monitoring unit 100 (step S12).
  • the driving control system 10 uses the driving pattern calculation unit 120 to input the user usage request input using the input unit 110 and the information indicating the state and driving environment of the power storage system 1 collected by the monitoring unit 100. Each is acquired (step S13). Then, the operation pattern calculation unit 120 generates a plurality of operation patterns of the power storage system 1 that satisfy the user use request by performing the first to fifth processes described above using the information (step S14).
  • the operation pattern calculation unit 120 may further perform a sixth process after the fifth process.
  • the operation control system 10 calculates the deterioration amount of each operation pattern generated by the operation pattern calculation unit 120 by the operation pattern calculation unit 120, and the operation pattern calculation unit 120 calculates the operation pattern having the smallest deterioration amount. Select (step S15).
  • the operation control system 10 acquires the operation pattern selected by the operation pattern calculation unit 120 using the control unit 130, and controls the charge / discharge operation of the power storage system 1 according to the operation pattern using the control unit 130. (Step S16).
  • the operation control system 10 As described above, the operation control system 10 according to the first embodiment generates a plurality of operation patterns of the power storage system 1 based on the user use request, the state of the power storage system 1 and the operation environment. In addition, the operation control system 10 selects an operation pattern with the least amount of deterioration from the plurality of generated operation patterns, and controls the charge / discharge operation of the power storage system 1 according to the selected operation pattern.
  • Each driving pattern is generated based on the driving environment of the power storage system 1 such as weather information and weather forecast information.
  • the usage state of the storage battery (discharge state of the storage battery) is not considered.
  • the deterioration amount of the operation pattern includes a value obtained by multiplying the discharge time by the cycle deterioration factor, as shown in the above formula (1). For this reason, compared with the technique of patent document 1, the operation control system 10 of 1st Embodiment can suppress progress of deterioration.
  • the operation control system 10 of the first embodiment can be applied to the power storage system 1 operated in cooperation with PV.
  • FIG. 3 is a block diagram illustrating a configuration example of the operation control system according to the second embodiment.
  • the operation control system 20 includes a monitoring unit 100, an input unit 110, an operation pattern calculation unit 120, a control unit 130, and an operation pattern selection unit 140.
  • the monitoring unit 100 acquires information indicating the state of the power storage system 1 and the operating environment.
  • the input unit 110 is provided for the user of the power storage system 1 to input his / her scheduled power usage amount (user usage request).
  • the driving pattern calculation unit 120 calculates a plurality of driving patterns that can be driven by the power storage system 1 based on the information obtained by the monitoring unit 100 and the user use request obtained by the input unit 110.
  • Control unit 130 controls the charge / discharge operation of power storage system 1 according to the operation pattern selected by the user using operation pattern selection unit 140.
  • the driving pattern selection unit 140 presents a plurality of driving patterns generated by the driving pattern calculation unit 120 in a selectable manner.
  • the operation control system 20 presents a plurality of operation patterns generated by the operation pattern calculation unit 120 to the user using the operation pattern selection unit 140. Thereby, the user can select the operation pattern of the power storage system 1 from the operation pattern selection unit 140.
  • the operation pattern calculation unit 120 will be described.
  • the operation pattern calculation unit 120 of the first embodiment generates a plurality of operation patterns, calculates a deterioration amount for each of the plurality of operation patterns, and selects an operation pattern with the smallest deterioration amount.
  • the operation pattern calculation unit 120 of the second embodiment generates a plurality of operation patterns, calculates a deterioration amount for each of the plurality of operation patterns, and sets an “operation mode” for the plurality of operation patterns.
  • Each of the generated operation patterns is set with an “operation mode” indicating its characteristics.
  • the “long life mode” in which the amount of deterioration (total factor) is the smallest and the progress of deterioration of the power storage system 1 is suppressed can be considered.
  • an “economic mode” in which the use amount of PV generated power (PV power use amount) is the largest can be considered.
  • the PV power usage amount is larger than the “long life mode”, and the degradation amount (total factor) is smaller than the “economic mode”.
  • a “combination mode” or the like having the largest (PV power consumption / degradation amount) is conceivable.
  • the operation pattern calculation unit 120 sets the “economic mode” to the operation pattern having the longest storage time of the power storage system 1 among the plurality of operation patterns.
  • the operation pattern calculation unit 120 sets “combination mode” to the operation pattern having the largest “PV power usage amount per unit deterioration amount (PV power usage amount / deterioration amount)”.
  • the storage time of the power storage system 1 may be used in the “time zone in which the user uses power”. Further, as the value indicating the PV power consumption, the value of the amount of electricity supplied from the PV to the user may be used.
  • the reason for using the storage time of the power storage system 1 as a value indicating the PV power usage is that there is a positive correlation between the “time period in which the user uses power” and the “PV power usage”. is there. More specifically, the power generated by the PV is supplied to the user during the time when the storage of the power storage system 1 in the “time period in which the user uses power” is set.
  • the operation pattern calculation unit 120 sets the “long life mode” to the pattern with the smallest deterioration amount among the plurality of operation patterns.
  • the deterioration amount refers to the deterioration amount calculated by the above equation (1) shown in the first embodiment.
  • the power storage system 1 When the power storage system 1 is controlled based on the operation pattern in which the “economic mode” is set, the amount of electric power supplied to the user from the charged power system can be suppressed by using the PV generated power to the maximum extent. Therefore, a reduction in power charges can be expected.
  • the PV generated power can be used as much as possible while suppressing the progress of the deterioration of the power storage system 1. That is, the operation pattern in which the “combination mode” is set can be said to be an operation pattern with a good balance between the deterioration amount and the PV generated power.
  • the power storage system 1 when the power storage system 1 is controlled based on the operation pattern in which the “long life mode” is set, the power storage system 1 is compared to the case where the power storage system 1 is controlled based on a plurality of other operation patterns. It is possible to most suppress the progress of deterioration. Therefore, a reduction in the maintenance frequency of the power storage system 1 can be expected by controlling the power storage system 1 based on the operation pattern in which the “long life mode” is set.
  • the following fourth operation pattern, fifth operation pattern, and sixth operation pattern are generated by the operation pattern calculation unit 120.
  • the amount of electricity supplied from the PV to the user is used as a value indicating the amount of PV power used.
  • the operation pattern calculation unit 120 sets the “long life mode” to the fourth operation pattern with the least amount of deterioration among the fourth operation pattern, the fifth operation pattern, and the sixth operation pattern. Then, the operation pattern selection unit 140 presents the fourth operation pattern with the least amount of deterioration as the “long life mode”. In addition, the operation pattern calculation unit 120 sets the “economic mode” to the sixth operation pattern with the largest PV power consumption. Then, the operation pattern selection unit 140 presents the sixth operation pattern having the largest PV power usage amount as the “economic mode”. In addition, the operation pattern calculation unit 120 sets the “combination mode” to the fifth operation pattern having the largest PV power usage amount with respect to the unit deterioration amount. And the driving
  • the operation pattern selection unit 140 will be described.
  • the driving pattern selection unit 140 includes a display unit (not shown) for presenting a plurality of driving patterns generated by the driving pattern calculation unit 120 to the user, and input means for the user to specify and input the selected driving pattern ( (Not shown).
  • the operation pattern selection unit 140 displays each of the plurality of operation patterns presented to the user in association with the corresponding “operation mode”.
  • the driving pattern selection unit 140 displays, on the display unit (not shown), the driving pattern in which the “operation mode” is set by the driving pattern calculation unit 120 among the plurality of driving patterns presented to the user. indicate. At this time, the operation pattern selection unit 140 displays the operation pattern in which the “operation mode” is set on the display unit (not shown) together with the “operation mode”. Thereby, the driving pattern selection unit 140 presents a plurality of driving patterns generated by the driving pattern calculation unit 120 to the user.
  • the operation pattern selection unit 140 displays the fourth operation pattern used in the description of the operation pattern calculation unit 120 described above on the display unit in association with the “long life mode”.
  • the driving pattern selection unit 140 displays the sixth driving pattern used in the description of the driving pattern calculation unit 120 described above on the display unit in association with the “economic mode”.
  • the driving pattern selection unit 140 displays the fifth driving pattern used in the description of the driving pattern calculation unit 120 described above on the display unit in association with the “combination mode”.
  • the operation pattern selection unit 140 displays the plurality of operation patterns on the display unit in this manner, thereby presenting the plurality of operation patterns together with the “operation mode” to the user.
  • the power storage system 1 is connected to the operation control system 20.
  • the description is abbreviate
  • FIG. 4 is a flowchart illustrating an example of a processing procedure of the operation control system according to the second embodiment.
  • the operation control system 20 first uses the monitoring unit 100 to indicate information indicating the state of the power storage system 1 such as the remaining capacity on the night before the operation pattern creation target day (for example, 22:00). Are collected (step S21).
  • the operation control system 20 collects, for example, weather forecast information for the next day as information indicating the operation environment of the power storage system 1 using the monitoring unit 100 (step S22).
  • the operation control system 20 uses the operation pattern calculation unit 120 to acquire the user use request input using the input unit 110 and the information indicating the state of the power storage system 1 and the operation environment collected by the monitoring unit 100. (Step S23). Then, the driving pattern calculation unit 120 uses the acquired information to perform the above-described first to sixth processes (detailed in the description of the first embodiment), thereby satisfying the user usage request. A plurality of operation patterns of the system 1 are generated (step S24).
  • the operation control system 20 uses the operation pattern calculation unit 120 to calculate the deterioration amount of each operation pattern, and sets a feature (“operation mode”) for each operation pattern (step S25).
  • the operation pattern calculation unit 120 sets, for example, the operation pattern with the least amount of deterioration in the “long life mode”.
  • the operation pattern calculation unit 120 sets, for example, the operation pattern having the largest usage amount of PV generated power (PV power usage amount) to the “economic mode”.
  • the operation pattern calculation unit 120 sets, for example, an operation pattern in which the usage amount of PV generated power with respect to the unit deterioration amount is the largest in “combination mode”.
  • the operation control system 20 presents each operation pattern calculated by the operation pattern calculation unit 120 together with the feature (“operation mode”) on the operation pattern selection unit 140 to present it to the user (step S26).
  • the operation control system 20 acquires the operation pattern selected by the user from the operation pattern calculation unit 120 using the control unit 130, and sets the acquired operation pattern. Therefore, the charge / discharge operation of the power storage system 1 is controlled (step S27).
  • the user can operate not only in the “long life mode” operation pattern in which the progress of deterioration of the power storage system 1 is most suppressed, but also in the “economic mode”, the “combination mode”, and the like.
  • a pattern can be selected. Therefore, the same effects as those of the first embodiment can be obtained, and the degree of freedom of use of the power storage system 1 by the user can be improved.
  • a plurality of operation patterns for the target day (next day) are generated on the day before the operation pattern creation target date, and charging of the power storage system 1 is performed according to the operation pattern with the least amount of deterioration. An example of controlling the discharge operation was shown.
  • a plurality of driving patterns for the target day are generated on the day before the driving pattern creation target date, and the user selects the generated driving patterns.
  • movement of the electrical storage system 1 according to the operated pattern which showed was shown.
  • the driving environment (meteorological information and weather forecast information) during operation of the power storage system 1 is monitored by the monitoring unit 100, and when the driving environment is greatly different from the previous day's forecast, the driving pattern calculation unit 120 is used.
  • An example of regenerating and updating a driving pattern using the above will be shown.
  • FIG. 3 is a block diagram illustrating a configuration example of the control system according to the third embodiment.
  • the operation control system includes a monitoring unit 100, an input unit 110, an operation pattern calculation unit 120, a control unit 130, and an operation pattern selection unit 140.
  • the monitoring unit 100, the input unit 110, the operation pattern calculation unit 120, the control unit 130, and the operation pattern selection unit 140 in the operation control system of the third embodiment are the same as the operation of the second embodiment. Functions equivalent to those in the control system 20 are provided.
  • the monitoring unit 100 in the operation control system of the third embodiment further collects the operation environment of the power storage system 1 for each preset period (15 minutes, 30 minutes, or 1 hour).
  • control unit 130 of the operation control system of the third embodiment further includes the current driving environment (weather information or weather forecast information) and information indicating the driving environment that is the basis of the current driving pattern. Compare. Specifically, the comparison between the current driving environment and information indicating the driving environment on which the driving pattern is based is based on, for example, the PV power generation amount in the current driving environment and the driving environment on which the driving pattern is based. It is a comparison with the amount of PV power generation. Based on this comparison, the control unit 130 calculates a power generation amount difference between the PV power generation amount in the current operation environment and the PV power generation amount based on the operation environment on which the operation pattern is based. It is assumed that the PV power generation amount based on the operating environment is preset for each operating environment. The control unit 130 compares a preset allowable error with the above-described power generation amount difference. The preset tolerance is a preset threshold value (details will be described later).
  • control unit 130 of the operation control system When the power generation amount difference is greater than the allowable error, the control unit 130 of the operation control system recalculates the operation pattern based on the current operation environment in the operation pattern calculation unit 120. Update. Thereafter, the control unit 130 of the operation control system controls the charge / discharge operation of the power storage system 1 according to the updated operation pattern.
  • control unit 130 controls the charge / discharge operation of the power storage system 1 according to the updated operation pattern from the updated time.
  • the control unit 130 of the operation control system when the “long-life mode” is set in the operation pattern before the update, the control unit 130 of the operation control system also determines the deterioration amount among the updated operation patterns even after the operation pattern is updated.
  • the charging / discharging operation of the power storage system 1 is controlled in accordance with the operation pattern with the least number.
  • the control unit 130 of the operation control system allows the PV generated power among the updated operation patterns even after the operation pattern is updated.
  • the charge / discharge operation of the power storage system 1 is controlled according to the operation pattern with the largest usage amount (PV power usage amount).
  • the control unit 130 of the operation control system determines the unit deterioration amount among the plurality of operation patterns updated even after the operation pattern is updated. The operation pattern with the largest usage of PV generated power is selected.
  • the operation pattern calculation unit 120 calculates a plurality of operation patterns again. Thereby, the driving pattern is updated. Then, according to the operation pattern corresponding to any one of the “long life mode”, “economic mode”, or “combination mode” among the plurality of calculated operation patterns, the control unit 130 performs the operation of the power storage system 1. Control.
  • the power storage system 1 is controlled by the control unit 130 according to the operation pattern corresponding to any one of the “long life mode”, the “economic mode”, and the “combination mode”. . Therefore, the progress of the deterioration of the power storage system 1 can be suppressed even after the operation pattern is exercised.
  • Whether or not to update the operation pattern is determined using a preset threshold (the above-mentioned allowable error).
  • the threshold value will be described in detail.
  • the threshold may be the same value throughout the day.
  • the threshold value may be set to a different value depending on the time.
  • the absolute value of the amount of solar radiation is larger in a time zone where the amount of solar radiation during fine weather (for example, 11:00 to 14:00) is larger than in other time zones. Therefore, the PV power generation amount fluctuates greatly even if the sunlight is temporarily blocked by clouds or the like. Therefore, the actual PV power generation amount in fine weather tends to have a larger error than the PV power generation amount based on the weather forecast. Therefore, the threshold value in a time zone with a large amount of solar radiation may be set to a value larger than the threshold value in another time zone.
  • FIG. 5 is a flowchart illustrating an example of a processing procedure of the operation control system according to the third embodiment.
  • the processing procedure of the operation control system illustrated in FIG. 5 is executed by the control unit 130 illustrated in FIGS. 1 and 3.
  • step S31 when the operation control system according to the third embodiment starts operation of the power storage system 1, the charge / discharge operation of the power storage system 1 according to the operation pattern generated in advance or the operation pattern selected by the user. Is controlled (step S31).
  • the operation control system determines whether or not it is the operation end time of the power storage system 1 (step S32). If it is the operation end time, the operation of the power storage system 1 is ended for one day.
  • step S32 if it is not the operation end time, the operation control system determines the actual operation environment at the present time (hereinafter referred to as “actual operation environment”) and the operation environment used when generating the operation pattern during operation (hereinafter, “ It is determined whether or not the “verification time” is compared (referred to as “predicted driving environment”) (step S33). When it is not verification time, it returns to the process of step S31 and the driving
  • a preset threshold value step S34. If the difference between the actual driving environment and the predicted driving environment is smaller than the threshold value, the process returns to step S31 and the operation of the power storage system 1 is continued.
  • the difference between the actual operating environment and the predicted operating environment refers to the difference between the amount of electricity generated by the PV under the actual operating environment and the amount of electricity generated by the PV under the predicted operating environment.
  • the amount of electricity generated by PV under the predicted operating environment is set in advance for each weather (sunny, cloudy, and rainy) indicated by the predicted operating environment. Therefore, in step S34 described above, the control unit 130 sets a threshold value in which a difference between the amount of generated power based on the operating environment acquired by the monitoring unit 100 and the amount of generated power of PV under the predicted operating environment is set in advance. Or less.
  • the driving control system regenerates and updates the driving pattern based on the actual driving environment (weather information or weather forecast information) and user usage request (Step S35), the process returns to Step S31, and the operation of the power storage system 1 is continued according to the updated operation pattern.
  • the driving environment (actual driving environment) of the power storage system 1 during operation is monitored, and the driving environment (predicted driving environment) used when the driving pattern is generated by the actual driving environment. If it is significantly different from the above, the operation pattern is regenerated and updated. Therefore, even if the actual driving environment is different from the predicted driving environment, the power storage system 1 can be operated with an operation pattern that satisfies the user use request.
  • the operation pattern is generated by the operation pattern calculation unit 120 using the “time period in which the generated power of PV can be used” in the case of cloudy weather.
  • the “time period in which the PV generated power can be used” in cloudy weather is shorter than the “time period in which the PV generated power can be used” in fine weather. Therefore, when the actual driving environment is sunny and the predicted driving environment is cloudy, it is included in the “time zone in which the generated power of the PV can be used” even though the power can be supplied from the PV. There is no time zone.
  • the driving pattern is regenerated and updated.
  • the “time zone in which the PV generated power can be used” is used as the “time zone in which the PV generated power can be used”.
  • the operation control system of the third embodiment when the “long life mode” is set in the operation pattern before the update, the operation pattern after the update is among the newly generated operation patterns. This is an operation pattern with the least amount of deterioration.
  • running control system of 3rd Embodiment the progress of degradation of the electrical storage system 1 can be suppressed from the time of updating a driving
  • the operation control system may control the operation of the PV together. .
  • the electric power that is not used by the user among the electric power generated by the PV may be used for charging the power storage system 1 or may flow backward to the electric power system.
  • the operation pattern calculation unit 120 may include the predicted charging operation in the operation pattern.
  • the deterioration amount of the power storage system 1 in each operation pattern is calculated using a coefficient (deterioration factor) set based on an actually measured value measured in advance and the above equation (1).
  • FIG. 6A to 6C are graphs showing examples of measurement results of cycle deterioration at the ambient temperature of the power storage system.
  • FIG. 6A shows an example of a measurement result of cycle deterioration when the power storage system 1 is charged and discharged at 1C.
  • FIG. 6B shows an example of a measurement result of cycle deterioration when the power storage system 1 is charged and discharged at 0.3C.
  • FIG. 6C shows an example of a measurement result of cycle deterioration when the power storage system 1 is charged / discharged at 0.15C.
  • C indicates a discharge rate
  • 1C is a current value at which discharge is completed in one hour when the power storage system 1 is discharged at a constant current.
  • “1C” is a current value when the power storage system 1 is discharged from SOC 100% to SOC 0% in one hour.
  • charging at the same current value as during 1C discharge is referred to as 1C charging.
  • charging at the same current value as at the time of 0.3C discharging is referred to as 0.3C charging.
  • charging at the same current value as at the time of 0.15C discharging is referred to as 0.15C charging.
  • the table shown in FIG. 7 is set based on the graphs shown in FIGS. 6A to 6C.
  • FIG. 8A to 8F are graphs showing examples of measurement results of storage deterioration at the ambient temperature of the power storage system.
  • the “time period in which the user uses power” included in the user use request indicates from 7:00 to 23:00.
  • the user use request indicates, for example, 5 Ah as “the amount of electricity used by the user”.
  • the operation pattern calculation unit 120 generates three operation patterns (a first operation pattern, a second operation pattern, and a third operation pattern) shown in the following (1) to (3).
  • FIG. 10 is a graph showing an example of a first operation pattern of the power storage system in fine weather.
  • charging of the power storage system 1 with electric power from the electric power system is set from 3:00 to 7:00.
  • the power storage system 1 stops discharging when the SOC reaches 85%.
  • FIG. 11 is a graph showing an example of a second operation pattern of the power storage system in fine weather.
  • FIG. 12 is a graph showing an example of a third operation pattern of the power storage system in fine weather.
  • the operation pattern calculation unit 120 calculates the deterioration amounts of the first operation pattern, the second operation pattern, and the third operation pattern described above. And the driving
  • the third operation pattern described above is an operation pattern in which the rated capacity of the power storage system 1 is not utilized to the maximum extent. That is, the third operation pattern is an operation pattern in which the capacity of the power storage system 1 is wasted.
  • the power storage system 1 is not charged to SOC 100%, but is charged only to SOC 85%. That is, this is a pattern in which the capacity (15%) of the power storage system 1 is not used.
  • the third operation pattern has a smaller amount of deterioration than the first and second operation patterns.
  • FIG. 13 is a graph showing an example of an operation pattern of the power storage system in rainy weather.
  • the discharge time is 6 hours.
  • FIG. 14 is a graph showing an example of the operation pattern of the power storage system during cloudy weather.
  • the “time period in which PV generated power can be used” is considered to be shorter than that in fine weather.
  • 9 o'clock to 15 o'clock is the “time zone in which the generated power of PV can be used” in cloudy weather.
  • FIGS. 13 and 14 are examples of operation patterns during rainy weather and cloudy weather.
  • the driving pattern calculation unit 120 can generate a plurality of driving patterns in which the SOC at the end of charging or at the time of storage is changed, for example, during rainy weather and cloudy weather as well as during sunny weather.
  • power consumption corresponding to consumption of electricity of 5 A per hour is set continuously from 7:00 to 23:00.
  • the “time period in which the user uses power” included in the user use request indicates from 7:00 to 23:00.
  • the user use request indicates 5 Ah as “amount of electricity used by the user”.
  • an operation pattern may be generated in accordance with the user use request.
  • the discharge rate from 7 o'clock to 8 o'clock in the first to third operation patterns and the operation pattern during cloudy weather changes.
  • the SOC value at the time of storage of power storage system 1 from 8 o'clock to 18 o'clock or from 9 o'clock to 18 o'clock changes.
  • the discharge rate from 7 o'clock to 8 o'clock in the operation pattern in the rainy weather also changes.
  • power consumption corresponding to consumption of 10 Ah electric power is set from 7 o'clock to 8 o'clock, power consumption is zero from 8 o'clock to 15 o'clock, and 5 Ah from 15 o'clock to 24 o'clock Suppose that the consumption of electricity is set.
  • the “time period in which the user uses power” of the user use request is from 7:00 to 24:00. Further, it is assumed that the “amount of electricity used by the user” in the user usage request from 7 o'clock to 8 o'clock is 10 Ah. In addition, it is assumed that the “amount of electricity used by the user” in the user usage request from 8:00 to 15:00 is 0 Ah. In addition, it is assumed that “amount of electricity used by the user” in the user usage request from 15:00 to 24:00 is 5 Ah. Further, it is assumed that the “time period in which PV generated power can be used” is from 8:00 to 18:00.
  • the operation pattern calculation unit 120 can generate an operation pattern in which storage of the power storage system 1 is set from 8:00 to 18:00.
  • the operation pattern calculation unit 120 selects the cycle deterioration factor in the CC charging time and the CV charging time, the storage deterioration factor in the SOC storage time, and the cycle deterioration factor in the discharge time according to the operation pattern.
  • the deterioration amount may be calculated.
  • the driving pattern calculation unit 120 calculates the deterioration amount by the equation (1) shown in the first embodiment.
  • the second example is a specific example of the operation mode setting in the second embodiment described above.
  • the operation pattern calculation unit 120 generates the following three operation patterns (1) to (3) (seventh operation pattern, eighth operation pattern, and ninth operation pattern).
  • (1) Seventh Operation Pattern FIG. 15 is a diagram showing a seventh operation pattern. The seventh operation pattern will be described.
  • charging of the power storage system 1 with electric power from the power system is set from 4:40 to 7:00.
  • SOC 65%.
  • FIG. 16 is a diagram showing an eighth operation pattern. The eighth operation pattern will be described. In the eighth operation pattern, charging of the power storage system 1 with power from the power system is set at 3 to 7 o'clock.
  • the time set in the eighth operation pattern is as follows: the CC charging time of 0.3C is 3 hours, the CV charging time is 1 hour, the discharging time of 0.15C is 6 hours, and the SOC is 70%. The time is 9 hours.
  • FIG. 17 is a diagram showing a ninth operation pattern. The ninth operation pattern will be described. In the ninth operation pattern, charging of the power storage system 1 with power from the power system is set at 3 to 7 o'clock.
  • the time set in the ninth operation pattern is as follows: the CC charging time of 0.3C is 3 hours, the CV charging time is 1 hour, the discharging time of 0.15C is 6 hours, and the SOC is 80%. The time is 5 hours 40 minutes.
  • PV power usage amount (PV power usage amount / deterioration amount) per unit deterioration amount) is 0.48.
  • the three driving patterns generated by the driving pattern calculation unit 120 have been described.
  • the operation pattern calculation unit 120 sets the “economic mode” to the seventh operation pattern having the longest storage time among the seventh operation pattern, the eighth operation pattern, and the ninth operation pattern.
  • the operation pattern calculation unit 120 has the highest “PV power use amount (PV power use amount / deterioration amount) per unit deterioration amount” among the seventh operation pattern, the eighth operation pattern, and the ninth operation pattern.
  • “Combination mode” is set to the large eighth operation pattern.
  • the operation pattern calculation unit 120 sets the “long life mode” to the ninth operation pattern having the smallest deterioration amount among the seventh operation pattern, the eighth operation pattern, and the ninth operation pattern.
  • the third example is a specific example of the third embodiment described above.
  • the actual operation environment of the power storage system 1 during operation is monitored, and the operation environment (predicted operation environment) used when the actual operation environment generates an operation pattern during operation If it is significantly different, regenerate and update the driving pattern.
  • FIG. 18 shows how the operation pattern is changed during operation of the power storage system 1.
  • FIG. 18 shows a state in which the operation pattern is updated during the operation of the power storage system 1.
  • FIG. 18 is a graph showing a third example of the operation pattern of the power storage system.
  • the driving pattern shown in FIG. 18 is based on the predicted driving environment on the day before the driving pattern creation target day, and the creation target day is predicted to be sunny, and the PV power generation amount satisfies the user usage request from 8:00 to 18:00. It is generated as a thing.
  • the operation pattern shown in FIG. 18 is generated assuming that “8:00 to 18:00” is “a time slot in which PV generated power can be used”.
  • the amount of solar radiation at 11 o'clock is greatly reduced from the predicted value (predicted driving environment) of the previous day, and the PV power generation amount satisfies the user usage request.
  • the driving pattern calculation unit 120 updates the driving pattern based on the predicted driving environment to the driving pattern based on the actual driving environment.
  • the control unit 130 controls the power storage system 1 based on the driving pattern based on the actual driving environment.
  • the power storage system 1 can be operated with the updated operation pattern that satisfies the user use request.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Tests Of Electric Status Of Batteries (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un système de commande de fonctionnement et un procédé de commande de fonctionnement qui sont applicables à un système de stockage d'énergie qui fonctionne en coopération avec un dispositif de production d'énergie photovoltaïque, tout en permettant d'empêcher la progression de la détérioration du système de stockage d'énergie. La solution selon la présente invention comprend : une unité de surveillance qui acquiert des informations indiquant l'environnement d'exploitation et l'état d'un système de stockage d'énergie ; une unité d'entrée permettant d'entrer une demande d'utilisation d'utilisateur, c'est-à-dire, une quantité d'utilisation de puissance planifiée d'un utilisateur ; une unité de calcul de modèle de fonctionnement qui, sur la base des informations acquises par l'unité de surveillance et de la demande d'utilisation d'utilisateur, génère une pluralité de modèles de fonctionnement pour le système de stockage d'énergie qui satisfont la demande d'utilisation d'utilisateur, calcule respectivement des quantités de détérioration du système de stockage d'énergie pour chaque modèle de fonctionnement, et sélectionne le modèle de fonctionnement doté de la quantité de détérioration la plus faible ; et une unité de commande qui commande des opérations de charge/décharge du système de stockage d'énergie en fonction du modèle de fonctionnement sélectionné par l'unité de calcul de modèle de fonctionnement.
PCT/JP2017/043785 2016-12-09 2017-12-06 Système de commande de fonctionnement et procédé de commande associé WO2018105645A1 (fr)

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WO2023090314A1 (fr) * 2021-11-18 2023-05-25 パナソニックＩｐマネジメント株式会社 Système d'estimation d'état de dégradation, procédé d'estimation d'état de dégradation et programme d'estimation d'état de dégradation
US12296714B2 (en) 2019-06-12 2025-05-13 Mitsubishi Electric Corporation Charge and discharge control device and charge and discharge control method including first, second, and third charge level ranges

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US12296714B2 (en) 2019-06-12 2025-05-13 Mitsubishi Electric Corporation Charge and discharge control device and charge and discharge control method including first, second, and third charge level ranges
WO2023090314A1 (fr) * 2021-11-18 2023-05-25 パナソニックＩｐマネジメント株式会社 Système d'estimation d'état de dégradation, procédé d'estimation d'état de dégradation et programme d'estimation d'état de dégradation

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