WO2016063947A1 - Système de stockage d'énergie réparti, procédé de commande d'énergie, et programme - Google Patents

Système de stockage d'énergie réparti, procédé de commande d'énergie, et programme Download PDF

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Publication number
WO2016063947A1
WO2016063947A1 PCT/JP2015/079826 JP2015079826W WO2016063947A1 WO 2016063947 A1 WO2016063947 A1 WO 2016063947A1 JP 2015079826 W JP2015079826 W JP 2015079826W WO 2016063947 A1 WO2016063947 A1 WO 2016063947A1
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Prior art keywords
storage system
power storage
power
discharge
load
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PCT/JP2015/079826
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English (en)
Japanese (ja)
Inventor
隆之 静野
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日本電気株式会社
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Priority to JP2016510863A priority Critical patent/JPWO2016063947A1/ja
Publication of WO2016063947A1 publication Critical patent/WO2016063947A1/fr

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46Controlling of the sharing of output between the generators, converters, or transformers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present invention relates to a distributed power storage system, a power control method, and a program.
  • Patent Document 1 discloses a technique for controlling charging / discharging operations of a plurality of storage batteries (secondary batteries) based on power supply and demand prediction information.
  • each storage battery is one of the factors that affect the effective life of the entire system. Therefore, it is desirable to be able to control each discharge power flexibly when considering the effective life of the entire system.
  • An object of the present invention is to provide a technique for controlling the discharge operation of a secondary battery.
  • the first power storage system is Using the power necessary for the first load managed by the first power storage system and the power necessary for the second load managed by the second power storage system, the discharge power of the second power storage system is determined and A notification means for notifying the second power storage system;
  • a distributed power storage system is provided.
  • a power control method for controlling power of a first power storage system and a second power storage system connected to a distribution line connected to a system The first power storage system is Using the power necessary for the first load managed by the first power storage system and the power necessary for the second load managed by the second power storage system, the discharge power of the second power storage system is determined and Notify the second power storage system; A power control method is provided.
  • the discharge operation of the secondary battery can be controlled as desired.
  • each component of the distributed power storage system 1 indicates a functional unit block, not a hardware unit configuration.
  • the notification unit 42 is realized by an arbitrary combination of hardware and software centering on a CPU of any computer, a memory, a program loaded in the memory, various storage media for storing the program, a network connection interface, and the like.
  • FIG. 1 is a diagram conceptually showing the processing configuration of the distributed power storage system 1 in the first embodiment.
  • the distributed power storage system 1 includes a main power storage system 20 that manages a main load 30, a sub power storage system 22 that manages a sub load 32, and a notification unit 42.
  • the main power storage system 20, the sub power storage system 22, the main load 30, and the sub load 32 are each connected to the distribution line 12 connected to the system 10.
  • Each of the main power storage system 20 and the sub power storage system 22 includes a chargeable / dischargeable main power storage unit 204 and a sub power storage unit 224 including, for example, a lithium ion secondary battery or a nickel hydride secondary battery.
  • the main power storage system 20 and the sub power storage system 22 use power conversion means such as an AC (Alternating Current) -DC (Direct Current) converter or a DC-DC converter (not shown) to supply power supplied via the distribution line 12. It is converted into charging power of direct current and a predetermined voltage and stored in each power storage unit. Further, the main power storage system 20 and the sub power storage system 22 convert the power stored in each power storage unit into predetermined discharge power using the power conversion means (not shown) and supply the power via the distribution line 12.
  • AC Alternating Current
  • DC-DC converter Direct Current converter
  • DC-DC converter DC-DC converter
  • the main system control unit 202 of the main power storage system 20 manages the power necessary for the main load 30 and basically controls the main load 30 to supply the power of the main power storage unit 204 to the main load 30. .
  • the subsystem control unit 222 of the sub power storage system 22 manages the power necessary for the sub load 32, and basically controls so that the power of the sub power storage unit 224 is supplied to the sub load 32.
  • the main load 30 is, for example, a load installed in a shared part of a building such as a tenant building (for example, shared lighting, an elevator, or network equipment in a tenant building).
  • the sub load 32 is, for example, a load installed for each floor or section of the building (for example, occupied lighting or OA equipment used in each tenant space).
  • the use of the distributed power storage system 1 is not limited to this example.
  • the notification unit 42 is provided in at least one of the main power storage system 20 and the sub power storage system 22. For example, as shown in FIG. 1A and FIG. 1B, at least one of the main system control unit 202 of the main power storage system 20 or the subsystem control unit 222 of the main power storage system 20 is notified by the notification unit 42. Function as.
  • the notification unit 42 uses another power storage system connected to the distribution line 12 in the same manner as the power storage system provided with the notification unit 42 using the power required for the main load 30 and the power required for the subload 32. The discharge power is determined and notified.
  • first storage system the storage system on the side that determines and notifies the discharge power of the other storage system
  • second storage system the storage system that is notified of the discharge power
  • the load managed by the first power storage system is also referred to as “first load”
  • the load managed by the second power storage system is also referred to as “second load”.
  • the main power storage system 20 is the first power storage system
  • the main load 30 is the “first load”
  • the sub load 32 is the “second load”.
  • the sub load 32 is the “first load”
  • main load 30 the “second load”.
  • the main system control unit 202 and the subsystem control unit 222 are both configured to function as the notification unit 42 as a combination of FIG. 1 (a) and FIG. 1 (b). It may be. In this case, both notification units 42 may notify the discharge power substantially simultaneously. In such a case, for example, the operation of each power storage system is controlled according to a predetermined priority order, for example, priority is given to notification from the main power storage system 20 side.
  • FIG. 2 is a flowchart showing the flow of processing of the distributed power storage system 1 in the first embodiment.
  • the processing described later depends on, for example, the monitoring result of the state of each power storage system (for example, the free capacity or remaining capacity of the power storage unit of each power storage system, the temperature state of the power storage unit, etc.), the charge / discharge schedule of each power storage system, etc. Executed.
  • the notification unit 42 acquires power required for the first load and power required for the second load (S102). Specifically, the notification unit 42 acquires power necessary for the main load 30 from the main power storage system 20 and acquires power required for the sub load 32 from the sub power storage system 22.
  • the notification unit 42 determines the charge / discharge operation to be performed by the first power storage system (S104). Regarding the charge / discharge operation to be performed by the first power storage system, the notification unit 42 can make a determination based on the state of each power storage system, for example. Specifically, the notification unit 42 acquires state information of at least one of the first power storage system and the second power storage system, and uses the acquired state information to charge / discharge the first power storage system to perform. The operation (charging, discharging, charging / discharging stop) is determined.
  • the SOC State of Charge
  • the SOC of the power storage unit can be an index for determining whether or not the power storage unit should be charged or discharged, for example.
  • the temperature of the power storage unit can be an index for determining whether or not to stop the charge / discharge operation of the power storage unit, for example.
  • the notification unit 42 can determine that the power storage unit should be charged when, for example, the SOC of the power storage unit is smaller than a predetermined charging threshold.
  • the notification part 42 can judge that it should discharge from the said electrical storage part, for example, when SOC of an electrical storage part is larger than a predetermined discharge threshold value.
  • the notification part 42 can judge that the charging / discharging operation
  • the state information used in the present embodiment is not limited to these.
  • the notification unit 42 determines the charge / discharge operation to be performed by the power storage system based on the state information of the one power storage system, and then performs the other power storage system based on the charge / discharge operation of the one power storage system. The charge / discharge operation can also be determined.
  • the notification unit 42 determines that the charge / discharge operation of one power storage system is “charge” or “charge / discharge stop”, and when power is required for a load managed by one power storage system, the other power storage The charge / discharge operation to be performed by the system can be determined as “discharge”. Further, when the notification unit 42 determines that the charge / discharge operation of one power storage system is “discharge”, in order to increase the discharge amount of the one power storage system, the charge / discharge operation to be performed by the other power storage system is “charged” It can be judged as “or“ charge / discharge stop ”. Moreover, the notification part 42 can also judge based on the charging / discharging schedule etc. of each electrical storage system regarding not only state information, such as SOC and temperature of an electrical storage part, regarding the charging / discharging operation
  • the notification unit 42 determines the discharge power of the second power storage system based on the charge / discharge operation of the first power storage system obtained as a result of the determination in S104. Specifically, when the first power storage system does not discharge (S106: NO), the notification unit 42 uses the sum of the power necessary for the first load and the second load acquired in S102 as the discharge power of the second power storage system. Determine (S108). In this example, “when the first power storage system does not discharge” refers to a case where the charge / discharge operation of the first power storage system is determined to be “charge” or “charge / discharge stop”.
  • the notification unit 42 determines whether or not the first power storage system can cover all the electric power necessary for each load acquired in S102. Is determined (S110). Specifically, the notification unit 42 includes a sum of power required for the first load and power required for the second load, and an upper limit value of power that can be output from the first power storage system (for example, rated output power). To determine whether or not all necessary power can be covered by the first power storage system.
  • the notification unit 42 sends the shortage of power to the second power storage system.
  • the discharge power is determined (S112).
  • the power shortage is calculated by the difference between the sum of the power required for the first load and the power required for the second load acquired in S102 and the upper limit value of the power that can be output from the first power storage system.
  • the first electric power storage system I can cover everything. That is, since there is no need to discharge from the second power storage system, the notification unit 42 determines the discharge power of the second power storage system to be 0 (S114).
  • the notification part 42 notifies the 2nd electrical storage system of the discharge electric power determined by S108, S112, or S114 (S116).
  • the second power storage system that has received the notification in S116 controls its own discharge power based on the notified discharge power (S118). For example, when the second power storage system can cover all the discharge power notified in S116, the second power storage system performs the discharge operation with the notified discharge power. Note that when the notification of “discharge power 0” is acquired in S116, the second power storage system does not execute the discharge operation. In addition, when the second power storage system cannot cover all the discharge power notified in S116, the second power storage system performs a discharge operation with discharge power that can be output (for example, rated output power) among the notified discharge power.
  • the second power storage system continues the discharge operation until the power stored in the second power storage system is depleted or the discharge end condition is satisfied such that the use of power at the first load and the second load ends.
  • the discharge power of the second power storage system is determined by the first power storage system using the power required for the load of the first power storage system and the power required for the load of the second power storage system. . Then, the discharge power of the second power storage system determined by the first power storage system is notified to the second power storage system, and the discharge operation of the second power storage system is controlled based on the notified discharge power. Thus, by controlling the discharge power of the second power storage system, the discharge power of the first power storage system can be relatively adjusted.
  • the discharge amount of the second power storage system is suppressed, and when the discharge power of the first power storage system is to be suppressed, the discharge amount of the second power storage system is To increase.
  • the discharge power of each power storage system it is possible to appropriately control the discharge power of each power storage system so as to improve the effective life of the entire system.
  • FIG. 3 is a diagram conceptually showing the processing configuration of the distributed power storage system 1 in the second embodiment.
  • the distributed power storage system 1 of this embodiment further includes a distributed power source 14 in addition to the configurations of the above-described embodiments.
  • the main power storage system 20 and the sub power storage system 22 of the present embodiment are the same as those of the first embodiment, and therefore the detailed configuration thereof is omitted in the drawing.
  • the distributed power source 14 is a power generation device that generates power using, for example, sunlight, wind power, gas, or the like.
  • the distributed power source 14 may be provided between the main power storage system 20 and the sub power storage system 22. Further, in FIG. 5, a plurality of distributed power sources 14 may be provided. For example, another distributed power source 14 may be further provided between the main power storage system 20 and the sub power storage system 22.
  • the notification unit 42 of the present embodiment uses the difference between the sum of the power necessary for the first load and the power necessary for the second load and the power that can be supplied from the distributed power supply 14 to discharge the second power storage system. Determine the power. In other words, the notification unit 42 of the present embodiment preferentially uses the power that can be supplied from the distributed power supply 14 over the power that can be supplied from the first or second power storage system.
  • FIG. 4 is a flowchart showing a process flow of the distributed power storage system 1 in the second embodiment.
  • the notification unit 42 determines whether or not all of the electric power necessary for each load acquired in S102 can be covered with electric power that can be supplied from the distributed power supply 14 (S202). Specifically, the notification unit 42 compares the sum of the power required for the first load and the power required for the second load with the generated power of the distributed power source 14 and distributes all the required power to the distributed power source. 14 determines whether supply is possible. When the sum of the power required for each load is equal to or less than the generated power of the distributed power source 14 (S202: YES), the notification unit 42 does not discharge each power storage system because it is not necessary to output power from each power storage system.
  • the notification unit 42 determines that the shortage of power (the sum of the power required for each load and the distributed power source 14). (Difference from the generated power) is calculated (S204). Then, the process proceeds to S104. In the process of S108 in the present embodiment, the notification unit 42 determines the insufficient power calculated in S204 as the discharge power of the second power storage system. In the process of S110 in the present embodiment, the notification unit 42 determines whether or not the first power storage system can cover all of the shortage of power calculated in S204.
  • the power that can be supplied from the distributed power supply 14 is preferentially used over the power that can be supplied from the first power storage system. Then, when the power required for the first load and the second load exceeds the power that can be supplied from the distributed power source 14, the processing described in the first embodiment is executed. Thereby, the effect similar to 1st Embodiment can be acquired, reducing the power purchase amount from the system
  • the notification unit 42 may determine the discharge power of the second power storage system without using the power that can be supplied from the distributed power supply 14.
  • the distributed power storage system 1 of the present modification does not execute the processes of S202 and S204. That is, the flow of processing in the distributed power storage system 1 of this modification is the same as that in FIG. By controlling in this way, the power that can be supplied from the distributed power source 14 becomes surplus power and can be supplied to the grid 10 side.
  • the present modification it is possible to obtain the same effect as that of the first embodiment while obtaining a profit by selling the surplus power of the distributed power source 14.
  • the SOC of each power storage unit can be controlled to reciprocate within a desired range (for example, a range in which the degree of deterioration when charging / discharging is repeated is minimum). it can. In this embodiment, the operation will be described.
  • FIG. 5 is a diagram conceptually showing the processing configuration of the distributed power storage system 1 of the third embodiment.
  • the distributed power storage system 1 of the present embodiment further includes a charge / discharge direction switching unit 44 in addition to the configuration of the first embodiment as illustrated in FIG. 1.
  • the distributed power storage system 1 of the present embodiment may further include a distributed power source 14 as in the second embodiment.
  • the charge / discharge direction switching unit 44 holds the current charge / discharge operation direction (charge direction or discharge direction) of the power storage system. Charging / discharging direction switching unit 44 switches the direction of the held charging / discharging operation using a predetermined lower limit value and upper limit value of SOC. Specifically, the charge / discharge direction switching unit 44 switches the direction of the charge / discharge operation to the “discharge direction” when the SOC of the power storage unit reaches the upper limit value of the SOC during the charge operation. In other words, when the charging operation of the first power storage system is performed, the discharging operation of the first power storage system is not performed until the SOC of the power storage unit reaches the upper limit value of the SOC.
  • the charging / discharging direction switching unit 44 switches the direction of the charging / discharging operation to the “charging direction”. In other words, when the discharging operation of the first power storage system is performed, the charging operation of the first power storage system is not performed until the SOC of the power storage unit reaches the lower limit value of the SOC.
  • the main system control unit 202 determines whether to charge or discharge the main power storage unit 204 based on the direction of the charge / discharge operation held by the charge / discharge direction switching unit 44.
  • the main system control unit 202 ends the charge operation of the main power storage system 20.
  • the main electrical storage system 20 will be in the state which discharges electric power according to the request
  • the charging / discharging direction switching unit 44 switches the direction of the charging / discharging operation to “charging direction”
  • the main system control unit 202 ends the discharging operation of the main power storage system 20 and executes the charging operation.
  • the charge / discharge direction switching unit 44 and the main system control unit 202 may be collectively referred to as a charge / discharge direction control unit.
  • FIG. 6 is a flowchart showing a process flow of the distributed power storage system 1 according to the third embodiment. Each process described below is executed independently in parallel with each process shown in the flowchart of FIG.
  • the charge / discharge direction switching unit 44 determines whether the power storage system is performing a charging operation or a discharging operation (S302). When the power storage system is performing a charging operation (S302: charging), the process proceeds to S304. On the other hand, when the power storage system is performing a discharge operation (S302: discharge), the process proceeds to process S310.
  • the charge / discharge direction switching unit 44 measures the SOC of the power storage unit (S304). Then, the charge / discharge direction switching unit 44 determines whether or not the measured SOC of the power storage unit is equal to or lower than the upper limit value (S306). When the measured SOC of the power storage unit is equal to or lower than the upper limit value (S306: YES), the charge / discharge direction switching unit 44 maintains the current charge / discharge operation direction until the SOC of the power storage unit reaches the upper limit value. continue.
  • the charge / discharge direction switching unit 44 switches the direction of the charge / discharge operation to “discharge” (S308). Thereby, the charging operation of the power storage system is terminated, and the power storage system enters a state of discharging power in response to a request from the load.
  • the charge / discharge direction switching unit 44 measures the SOC of the power storage unit (S310). Then, the charge / discharge direction switching unit 44 determines whether or not the measured SOC of the power storage unit is equal to or higher than the lower limit value (S312). When the measured SOC of the power storage unit is equal to or higher than the lower limit value (S312: YES), the charge / discharge direction switching unit 44 maintains the current charge / discharge operation direction until the SOC of the power storage unit becomes less than the lower limit value. Perform as necessary.
  • the charge / discharge direction switching unit 44 switches the direction of the charge / discharge operation to “charge” (S314). Thereby, the discharging operation of the power storage system is completed, and the charging operation of the power storage system is executed.
  • the notification unit 42 determines and notifies the discharge power of the second power storage system in accordance with the direction of the charge / discharge operation held by the charge / discharge direction switching unit 44. Specifically, when the direction of the charge / discharge operation of the first power storage system is “charging” (when it is desired to bring the first power storage system in the charging direction), the power required for the first load and the second load Thus, the discharge power of the second power storage system is determined as the sum of the necessary power. Thereby, even if it is a situation where electric power is required by the 1st load, the charge operation of the 1st electrical storage system can be maintained without a problem.
  • the first power storage system when the direction of the charge / discharge operation of the first power storage system is “discharge” (when it is desired to bring the first power storage system in the direction of discharging), the first power storage system is necessary with the first load as much as possible.
  • the amount of power that cannot be covered by the first power storage system is provided as the discharge power of the second power storage system. Thereby, the electric power discharged by the second power storage system can be assigned to the first power storage system, and the discharge power from the first power storage system can be increased.
  • a desired SOC range is determined for the power storage system, and the charge / discharge operation of the power storage system is controlled so as to reciprocate in the range.
  • the power storage system can be operated, for example, in a range where the degree of deterioration is minimized when charging and discharging are repeated, and the effect of improving the life of the power storage system can be expected.
  • a temperature measuring unit (not shown) that measures the temperature of the power storage unit is further provided, and in the above-described operation during charging and discharging, the main system control unit 202 performs the power storage unit based on the measured temperature.
  • the charging / discharging operation may be stopped. For example, depending on whether or not the measured temperature falls within a predetermined temperature range, the charge / discharge direction switching unit 44 switches the direction of the charge / discharge operation to “stop”, and the main system control unit 202 switches to “stop”.
  • the charging / discharging operation is stopped using the switching as a trigger. Thereby, the charge / discharge operation under an abnormal temperature outside the predetermined temperature range can be suppressed, and the effect of improving the life of the power storage system can be enhanced.
  • the sub power storage system 22 may also have the charge / discharge direction switching unit 44.
  • the first power storage system is Using the power necessary for the first load managed by the first power storage system and the power necessary for the second load managed by the second power storage system, the discharge power of the second power storage system is determined and
  • the notifying means acquires state information of at least one of the first power storage system or the second power storage system, and further determines the discharge power of the second power storage system using the acquired state information.
  • At least one of SOC (State of Charge) and temperature of power storage means included in the first power storage system or the second power storage system is used.
  • the notification means includes Determining discharge power of the second power storage system without using power that can be supplied from the distributed power source; 1. To 3. The distributed electrical storage system as described in any one of these. 5.
  • the notification means includes Determining the discharge power of the second power storage system using the difference between the sum of the power required for the first load and the power required for the second load and the power that can be supplied from the distributed power source; 1. To 3. The distributed electrical storage system as described in any one of these. 6).
  • the first power storage system further comprises charge / discharge operation control means for controlling the charge / discharge operation of the power storage means of the first power storage system
  • the charge / discharge operation control means includes: When charging the power storage means, control so as not to perform the discharge operation until the SOC (State Of Charge) of the power storage means reaches an upper limit value of a predetermined SOC range, When discharging the power storage means, control so as not to perform the charging operation until the SOC of the power storage means reaches the lower limit value of the SOC range, 1. To 5.
  • the distributed electrical storage system as described in any one of these. 7).
  • a power control method for controlling power of a first power storage system and a second power storage system connected to a distribution line connected to a system The first power storage system is Using the power necessary for the first load managed by the first power storage system and the power necessary for the second load managed by the second power storage system, the discharge power of the second power storage system is determined and Notify the second power storage system; A power control method. 8).
  • the first power storage system acquires state information of at least one of the first power storage system or the second power storage system, and further determines the discharge power of the second power storage system using the acquired state information; Further includes: The power control method described in 1. 9.
  • At least one of SOC (State of Charge) and temperature of power storage means included in the first power storage system or the second power storage system is used. Further includes: The power control method described in 1. 10. A distributed power supply is further provided, The first power storage system is Determining discharge power of the second power storage system without using power that can be supplied from the distributed power source; Further includes: To 9. The power control method according to any one of the above. 11. A distributed power supply is further provided, The first power storage system is Determining the discharge power of the second power storage system using the difference between the sum of the power required for the first load and the power required for the second load and the power that can be supplied from the distributed power source; Further includes: To 9. The power control method according to any one of the above.
  • the first power storage system is Controlling the charge / discharge operation of the power storage means of the first power storage system; When charging the power storage means, control so as not to perform the discharge operation until the SOC (State Of Charge) of the power storage means reaches an upper limit value of a predetermined SOC range, When discharging the power storage means, control so as not to perform the charging operation until the SOC of the power storage means reaches the lower limit value of the SOC range, Further includes: To 11. The power control method according to any one of the above.
  • At least one of SOC (State of Charge) and temperature of power storage means included in the first power storage system or the second power storage system is used. 14 The program described in. 16. A distributed power supply is further provided, The notification means includes Determining discharge power of the second power storage system without using power that can be supplied from the distributed power source; 13 To 15. The program as described in any one of these. 17. A distributed power supply is further provided, The notification means includes Determining the discharge power of the second power storage system using the difference between the sum of the power required for the first load and the power required for the second load and the power that can be supplied from the distributed power source; 13 To 15. The program as described in any one of these. 18.
  • the computer Further functioning as charge / discharge operation control means for controlling the charge / discharge operation of the power storage means of the first power storage system,
  • the charge / discharge operation control means includes: When charging the power storage means, control so as not to perform the discharge operation until the SOC (State Of Charge) of the power storage means reaches an upper limit value of a predetermined SOC range, When discharging the power storage means, control so as not to perform the charging operation until the SOC of the power storage means reaches the lower limit value of the SOC range, 13 To 17.
  • the program as described in any one of these.

Abstract

L'invention concerne un système de stockage d'énergie réparti (1) comprenant un système de stockage d'énergie principal (20), un système de stockage d'énergie secondaire (22) et une unité de notification (42) qui sont connectés à un câblage (12) connecté à un réseau électrique (10). L'unité de notification (42) utilise l'énergie requise par une charge (première charge) gérée par l'un des systèmes de stockage d'énergie (premier système de stockage d'énergie) et l'énergie requise par une charge (seconde charge) gérée par l'autre système de stockage d'énergie (second système de stockage d'énergie) pour déterminer l'énergie déchargée par le second système de stockage d'énergie, et la notifie au second système de stockage d'énergie.
PCT/JP2015/079826 2014-10-23 2015-10-22 Système de stockage d'énergie réparti, procédé de commande d'énergie, et programme WO2016063947A1 (fr)

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