WO2018008418A1 - Système de commande de flux d'énergie inverse, dispositif de stockage d'énergie et procédé de commande de flux d'énergie inverse - Google Patents

Système de commande de flux d'énergie inverse, dispositif de stockage d'énergie et procédé de commande de flux d'énergie inverse Download PDF

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Publication number
WO2018008418A1
WO2018008418A1 PCT/JP2017/023006 JP2017023006W WO2018008418A1 WO 2018008418 A1 WO2018008418 A1 WO 2018008418A1 JP 2017023006 W JP2017023006 W JP 2017023006W WO 2018008418 A1 WO2018008418 A1 WO 2018008418A1
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WIPO (PCT)
Prior art keywords
power
power storage
accommodation
storage device
reverse
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Application number
PCT/JP2017/023006
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English (en)
Japanese (ja)
Inventor
渡辺　健一
有紀 脇
工藤　貴弘
Original Assignee
パナソニックＩｐマネジメント株式会社
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Priority to JP2018526026A priority Critical patent/JP6650606B2/ja
Publication of WO2018008418A1 publication Critical patent/WO2018008418A1/fr

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    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • 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

Definitions

  • the present invention relates to a reverse flow control system for controlling reverse flow.
  • the output control system described in Patent Document 1 is an example.
  • This output control system includes a plurality of distributed power sources connected to a commercial power system and a management device.
  • the management device is configured so that the one distributed power supply receives the power reversely flowed by the other distributed power supply. Send a power reception start command to the power supply and a reverse power flow start command to the other distributed power supply. Thereby, the effective utilization of electric power is achieved.
  • the amount of power given or received by the power storage device in power interchange may vary from the planned amount due to the influence of fluctuations in the generated power or power consumption at the facility of the customer having the power storage device.
  • the amount of power provided by the power storage device exceeds the amount of power received by another power storage device, and the power flows out to the power system. And such an outflow of electric power may impede efficient operation of the electric power system.
  • an object of the present invention is to provide a reverse power flow control system capable of appropriately suppressing power flowing out to the power system in power interchange between a plurality of power storage devices.
  • a reverse power flow control system includes a plurality of power storage units in a power interchange between a plurality of power storage devices that are electrically connected to a power system through a common power receiving point.
  • An acquisition unit that acquires request information regarding a request for each of the devices to give or receive power, (i) a power accommodation group that provides power in the power accommodation according to the request information, and (ii) the power Includes three groups: a power interchange group that receives power in power interchange, and (iii) a reverse power flow control group that absorbs power corresponding to the reverse power flowing out of the common power receiving point to the power system
  • a classification unit that classifies into a plurality of groups, and each of the plurality of power storage devices, the power storage device is classified into one of the three groups
  • a control unit for outputting information for charging or discharging the power storage device according to the group to which the power storage device is classified if it is.
  • the power storage device is a power storage device included in a plurality of power storage devices that are electrically connected to an electric power system through a common power reception point, and is configured to charge a storage battery and the storage battery. And (i) a power accommodation group that provides power in power accommodation among the plurality of power storage devices; and (ii) a power accommodation group that receives power in the power accommodation; , (Iii) is classified into any one of a plurality of groups including three groups including a reverse power flow control group that absorbs power corresponding to the reverse power flowing out to the power system beyond the common power receiving point.
  • the control unit charges or discharges the power storage device according to a group into which the power storage device is classified when the power storage device is classified into any of the three groups. So that the, to charge or discharge the battery.
  • each of the plurality of power storage devices includes power in a power interchange between the plurality of power storage devices electrically connected to the power system through a common power reception point.
  • Classification into a plurality of groups including three groups: a received power interchange group and (iii) a reverse power flow control group that absorbs power corresponding to the reverse power flowing out of the common power receiving point to the power system And when each of the plurality of power storage devices is classified into one of the three groups According to the group to which the power storage device is classified and a control step of outputting information for charging or discharging the power storage device.
  • the reverse power flow control system and the like can appropriately suppress power flowing out to the power system in power interchange between a plurality of power storage devices.
  • FIG. 1 is a block diagram illustrating a configuration of a power control system according to an embodiment.
  • FIG. 2 is a block diagram showing the configuration of the reverse power flow control system in the embodiment.
  • FIG. 3 is a flowchart showing the operation of the reverse flow control system in the embodiment.
  • FIG. 4 is a flowchart showing a first specific example of the operation of the reverse flow control system in the embodiment.
  • FIG. 5 is a flowchart showing a second specific example of the operation of the reverse flow control system in the embodiment.
  • FIG. 6 is a block diagram illustrating a configuration of the power storage device in the embodiment.
  • FIG. 7 is a block diagram illustrating a configuration of a control unit of the power storage device according to the embodiment.
  • FIG. 8 is a conceptual diagram showing a plurality of groups in the embodiment.
  • FIG. 9 is a conceptual diagram illustrating a configuration example in which the power storage device according to the embodiment detects reverse power flow.
  • power may mean the amount (value) of power.
  • Charge / discharge corresponds to at least one of charge and discharge.
  • FIG. 1 is a block diagram showing a configuration of a power control system including a reverse power flow control system in the present embodiment.
  • the power control system 100 in the present embodiment includes a transformer 101, a power line 102, a plurality of customer facilities 104, a communication line 106, and a reverse power flow control system 200.
  • the transformer 101 is a transformer that converts electric power supplied from the power system into an appropriate voltage in order to supply each customer facility 104.
  • the transformer 101 corresponds to, for example, a high-voltage power receiving facility for an apartment house.
  • the electric power system is a system for supplying electricity generated at the power plant to the demand side, and includes, for example, a power plant, a substation, a distribution network, and the like operated by an electric power company.
  • the power line 102 corresponds to a distribution line for connecting a power system and a plurality of customer facilities 104 including a plurality of loads 105 and a plurality of power storage devices 400.
  • the plurality of loads 105, the plurality of power storage devices 400, and the plurality of customer facilities 104 are connected to the power system via the power line 102.
  • the transformer 101 and each customer facility 104 are electrically connected by the power line 102, and power is supplied from the transformer 101 to each customer facility 104.
  • the customer facility 104 is a facility installed in a customer facility (for example, an exclusive part of an apartment house or a detached house).
  • the customer facility 104 includes a load 105 and a power storage device 400. These components included in the customer facility 104 are also installed in the customer facility. Note that a plurality of consumers may constitute one high-pressure consumer for each apartment house or for each region. That is, a plurality of consumers may be integrated into one high-pressure consumer.
  • one customer facility 104 may include a plurality of loads 105 and a plurality of power storage devices 400. Further, one customer facility 104 may include only one or more loads 105 among one or more loads 105 and one or more power storage devices 400, or may include only one or more power storage devices 400. Good. In addition to one or more loads 105 and one or more power storage devices 400, one customer facility 104 may include a power generation device such as a solar power generation device.
  • the load 105 is a device that consumes power in the customer facility 104.
  • the load 105 is, for example, a household electric device.
  • the customer facility 104 may include a plurality of loads 105.
  • the power storage device 400 is a device that can be charged and discharged. For example, at night when power demand is low, the power storage device 400 is charged with power supplied from the power grid. In addition, during the daytime when power demand is high, the power storage device 400 discharges and supplies power to the load 105.
  • the power storage device 400 may perform charging or discharging based on information (command) acquired from the reverse power flow control system 200.
  • the plurality of power storage devices 400 may perform power interchange between the plurality of power storage devices 400.
  • the power storage device 400 may receive power from one or more other power storage devices 400 in power accommodation by charging.
  • the power storage device 400 may supply power to one or more other power storage devices 400 in power accommodation by discharging.
  • the power storage device 400 may notify the reverse power flow control system 200 of request information related to power interchange.
  • the power storage device 400 includes, for example, a storage battery, a charging / discharging unit including a power conversion device, and the like.
  • the power converter performs AC (alternating current) / DC (direct current) conversion when charging the storage battery.
  • the power conversion device performs DC / AC conversion when discharging the storage battery.
  • the communication line 106 is a communication line for the power storage device 400 and the reverse power flow control system 200 to communicate with each other.
  • the communication line 106 is realized by, for example, a wired LAN that conforms to the IEEE 802.3 standard, a wireless LAN that conforms to the IEEE 802.11a, b, g standard, or a public communication line such as a mobile phone line. Further, the communication line 106 may allow the reverse power flow control system 200 to acquire information indicating the power flow (reverse power flow) at the power receiving point 300.
  • the power receiving point 300 corresponds to a position where a plurality of customers collectively receive power from the power system.
  • the power receiving point 300 is a common power receiving point for the plurality of customer facilities 104 and is a common power receiving point for the plurality of power storage devices 400.
  • reverse power flow cannot be made, and the connection of power generation facilities that generate reverse power flow is limited.
  • the power receiving point 300 may be a responsible disaggregation point between a range belonging to a consumer group composed of a plurality of consumers and a range belonging to the power system.
  • the power receiving point 300 may be provided with a power meter for detecting a power flow (reverse power flow).
  • the power meter installed at the power receiving point 300 may be a smart meter, and may notify the reverse power flow control system 200 of information indicating the power flow (reverse power flow) at the power receiving point 300.
  • the power receiving point 103 corresponds to a position where the customer facility 104 receives power from the outside. In the present embodiment, a reverse power flow is allowed to flow from the customer facility 104 beyond the power receiving point 103. Further, the power receiving point 103 may be a responsible decomposition point between a range belonging to the consumer and a range not belonging to the consumer. Further, for example, a power meter for detecting power flowing into the customer facility 104 and power flowing out from the customer facility 104 may be installed at the power receiving point 103.
  • the reverse power flow control system 200 is a system that controls reverse power flow. Specifically, the reverse power flow control system 200 suppresses the reverse power flow that flows to the power system beyond the power receiving point 300 while supporting power interchange between the plurality of power storage devices 400.
  • the reverse power flow control system 200 classifies the plurality of power storage devices 400 into a plurality of groups including a power accommodation group, a power receiver accommodation group, and a reverse power flow control group.
  • the power interchange group is a group that provides power in power interchange.
  • the power accommodation group is a group that receives power in power accommodation.
  • the reverse power flow control group is a group that absorbs power corresponding to the reverse power flow that flows out of the power receiving point 300 to the power system.
  • the power provided by the power storage device 400 in power interchange is power output from the power storage device 400 to one or more other power storage devices 400.
  • This power is affected by power consumption and generated power in the customer facility 104. For example, a decrease in power consumption or an increase in generated power results in an increase in the power output to one or more other power storage devices 400 out of the power output from the power storage device 400. There is a possibility that the power to be given is larger than planned.
  • the power received by the power storage device 400 in power interchange is power input from one or more other power storage devices 400 to the power storage device 400.
  • This power is also affected by power consumption and generated power in the customer facility 104. For example, due to a decrease in power consumption or an increase in generated power, the power storage device 400 may be in a fully charged state during power interchange, and the power received by the power storage device 400 during power interchange may be smaller than planned.
  • the power accommodation group one or more power storage devices 400 belonging to the power accommodation group
  • reverse power flow There is a possibility that reverse power flow will occur.
  • the reverse power flow control group absorbs, as reverse power flow, the difference between the power provided by the power accommodation group and the power received by the power accommodation group when the power provided by the power accommodation group is greater than the power received by the power accommodation group. May be. That is, the reverse power flow control group may absorb, as reverse power flow, a portion of the power provided by the power accommodation group that exceeds the power received by the power accommodation group. Further, the reverse power flow control group may absorb the reverse power flowing out of the difference over the power receiving point 300 to the power system.
  • the reverse power flow control system 200 charges or discharges the power storage device 400 by notifying the power storage device 400 of information (command) for charging or discharging the power storage device 400 according to the group into which the power storage device 400 is classified.
  • the reverse power flow control system 200 outputs information for charging or discharging the power storage device 400 to the power storage device 400 according to the group into which the power storage device 400 is classified.
  • reverse power flow control system 200 charges or discharges power storage device 400 according to the group into which power storage device 400 is classified.
  • the expression that the reverse power flow control system 200 charges or discharges the power storage device 400 may mean that the reverse power flow control system 200 outputs information for charging or discharging the power storage device 400. .
  • the reverse power flow control system 200 may discharge one or more power storage devices 400 belonging to the power interchange group so that the power interchange group supplies power in the power interchange. Further, the reverse power flow control system 200 may charge one or more power storage devices 400 belonging to the power accommodation group so that the power accommodation group receives power in the power accommodation. Further, the reverse power flow control system 200 may charge one or more power storage devices 400 belonging to the reverse power flow control group so that the reverse power flow control group absorbs the reverse power flow power.
  • the reverse power flow control system 200 receives the accommodation amount that is the amount of power that the power accommodation group gives in the power accommodation before the predetermined time zone in which the electricity accommodation is performed, and the power accommodation group receives in the power accommodation. Determine the amount of power to be accommodated. Then, the reverse power flow control system 200 discharges one or more power storage devices 400 belonging to the power accommodation group based on the determined accommodation amount in a predetermined time period, and based on the determined accommodation amount, One or more power storage devices 400 belonging to the power interchange group are charged.
  • the reverse power flow control system 200 charges one or more power storage devices 400 belonging to the reverse power flow control group so that the reverse power flow control group absorbs the reverse power flow power in a predetermined time zone.
  • the reverse power flow control system 200 detects reverse power flowing out of the power receiving point 300 to the power system at a cycle shorter than a predetermined time zone (time length of time zone), and the detected reverse power flow power is detected. Accordingly, one or more power storage devices 400 belonging to the reverse power flow control group may be charged.
  • the power control system 100 may include only one or more arbitrary constituent elements among the plurality of constituent elements illustrated in FIG.
  • the power control system 100 may include only the reverse power flow control system 200 and the plurality of power storage devices 400 among the plurality of components illustrated in FIG.
  • a system different from the power control system 100 may include other components.
  • FIG. 2 is a block diagram showing a configuration of the reverse power flow control system 200 shown in FIG.
  • the reverse power flow control system 200 includes an acquisition unit 201, a classification unit 202, and a control unit 203.
  • the acquisition unit 201 is an acquisition unit that acquires request information.
  • This request information is request information related to power accommodation between the plurality of power storage devices 400, and is information related to a request that each of the plurality of power storage devices 400 provides or receives power in power accommodation.
  • the request information may correspond to one power storage device 400, or may correspond to a plurality of power storage devices 400.
  • the request may be a schedule, a plan, or a request.
  • the request information may indicate that there is a request for the power storage device 400 to supply power in power interchange. Further, the request information may indicate that there is a request for power storage device 400 to receive power in power interchange. Further, the request information may indicate that there is no request that power storage device 400 provides power in power accommodation, and that there is no request that power storage device 400 receives power in power accommodation.
  • the request information may indicate that there is a request for power sale with respect to the power storage device 400, may indicate that there is a request for power purchase, and there is no request for power sale or power purchase. You may show that.
  • the request information may be information for each time period. That is, the request information may be information related to a request that the power storage device 400 gives or receives power for each time slot in power accommodation.
  • the request information when there is a request that the power storage device 400 supplies power in power accommodation, includes a request amount of power provided by the power storage device 400 in power accommodation and a request time in which the power storage device 400 supplies power in power accommodation. A band may be indicated. Further, when there is a request for power storage device 400 to receive power during power interchange, the request information includes a request amount of power received by power storage device 400 during power interchange and a request time zone during which power storage device 400 receives power during power interchange. May be shown.
  • the acquisition unit 201 may acquire request information from each of the plurality of power storage devices 400, or may acquire request information from a consumer having each of the plurality of power storage devices 400. For example, the acquisition unit 201 may acquire request information through the communication line 106 from the power storage device 400 or a customer having the power storage device 400.
  • the acquisition unit 201 may acquire the request information by collecting information related to the request information from each power storage device 400 or each customer. For example, the acquisition unit 201 collects information such as the remaining battery level, past charge record, and past discharge record of each power storage device 400 and predicts a request for power accommodation based on the collected information. May be obtained.
  • the classification unit 202 is a classifier that classifies the plurality of power storage devices 400 into a plurality of groups. These groups include the power accommodation group, the power accommodation group, and the reverse power flow control group described above.
  • the classification unit 202 may preferentially classify the power storage device 400 into a power interchange group. . Further, when the request information indicates that there is a request for power storage device 400 to receive power (power purchase request) in power accommodation, classification unit 202 may preferentially classify power storage device 400 into the power accommodation group. Good.
  • classification unit 202 prioritizes power storage device 400. Therefore, it may be classified into a reverse power flow control group.
  • the classification unit 202 may preferentially classify the power storage device 400 into a power accommodation group.
  • the classification unit 202 may preferentially classify the power storage device 400 into the power-accommodated group as the required amount of power received by the power storage device 400 in power accommodation increases. Then, the smaller the required amount, the classification unit 202 may preferentially classify the power storage device 400 into the reverse power flow control group.
  • the classification unit 202 may preferentially classify the power storage device 400 into the power interchange group as the unit price of the power provided by the power storage device 400 in the power interchange is lower. The higher the unit price of power received by the power storage device 400 in power accommodation, the classification unit 202 may preferentially classify the power storage device 400 into the power accommodation group.
  • the classification unit 202 may classify the plurality of power storage devices 400 into a plurality of groups, thereby classifying the plurality of consumers into a plurality of groups, or classifying the plurality of customer facilities 104 into a plurality of groups. May be. And the classification
  • category part 202 may classify the consumer which does not have the electrical storage apparatus 400 into a to-be-powered accommodation group, and classifies the consumer equipment 104 which is not equipped with the electrical storage apparatus 400 into an to-be-powered accommodation group. Also good.
  • the classification unit 202 may preferentially classify the power storage devices 400 close to the power receiving point 300 into the reverse power flow control group. For example, when the length of the power line 102 between the first power storage device 400 and the power receiving point 300 is shorter than the length of the power line 102 between the second power storage device 400 and the power receiving point 300, the first power storage device 400 The reverse power flow control group may be classified with priority over the second power storage device 400.
  • the classification unit 202 sets the plurality of power storage devices 400 so that the total capacity of the one or more power storage devices 400 belonging to the power accommodation group is smaller than the total capacity of the one or more power storage devices 400 belonging to the power accommodation group. You may classify into a plurality of groups.
  • the control unit 203 is a controller that charges or discharges each of the plurality of power storage devices 400.
  • Control unit 203 charges or discharges power storage device 400 by notifying information (command) for charging or discharging power storage device 400 according to the group into which power storage device 400 is classified.
  • the control unit 203 determines the accommodation amount and the accommodation time zone for the power storage devices 400 belonging to the power accommodation group according to the request information indicating the requested amount and the requested time zone.
  • the accommodation amount is the amount of power given by the power storage device 400 in power accommodation
  • the accommodation time zone is a time zone in which the power storage device 400 gives power in power accommodation.
  • control part 203 notifies the accommodation amount and the accommodation time slot
  • the control unit 203 determines the accommodation amount and the accommodation time zone for the power storage devices 400 belonging to the electricity accommodation group according to the request information indicating the request amount and the request time zone.
  • the accommodation amount is the amount of power received by the power storage device 400 in the power accommodation.
  • the interchangeable time zone is a time zone in which the power storage device 400 receives power during power interchange.
  • control unit 203 notifies the power storage device 400 belonging to the power accommodation group of the accommodation amount and the accommodation time zone. Thereby, the control unit 203 charges the power storage device 400 belonging to the power-accommodated group so that the power storage device 400 belonging to the power-accommodated group receives power in the power interchange.
  • control unit 203 notifies the power storage devices 400 belonging to the reverse power flow control group of the role of absorbing the reverse power flow (that is, the reverse power flow control instruction).
  • the control unit 203 notifies the power storage devices 400 belonging to the reverse power flow control group of the absorption amount of the reverse power flow.
  • control unit 203 charges power storage devices 400 belonging to the reverse power flow control group so that power storage devices 400 belonging to the reverse power flow control group absorb reverse power flow.
  • control unit 203 may limit the amount of power provided by the one or more power storage devices 400 belonging to the power interchange group according to the chargeable amount of the one or more power storage devices 400 belonging to the reverse power flow control group.
  • Control unit 203 may limit the amount of power received by one or more power storage devices 400 belonging to the power interchange group according to the chargeable amount of one or more power storage devices 400 belonging to the reverse power flow control group.
  • the chargeable amount of the one or more power storage devices 400 is, for example, an amount obtained by subtracting the total battery remaining amount of the one or more power storage devices 400 from the total capacity of the one or more power storage devices 400.
  • FIG. 3 is a flowchart showing the operation of the reverse power flow control system 200 shown in FIG.
  • the acquisition unit 201 acquires request information related to power accommodation (S101).
  • the request information indicates, for each of the plurality of power storage devices 400, whether or not there is a request for the power storage device 400 to supply or receive power during power interchange.
  • the classification unit 202 classifies the plurality of power storage devices 400 into a plurality of groups according to the request information (S102).
  • the power storage device 400 when the request information indicates that there is a request for the power storage device 400 to supply power in power interchange, the power storage device 400 is classified into a power interchange group. When the request information indicates that there is a request for the power storage device 400 to receive power in power accommodation, the power storage device 400 is classified into a power accommodation group. When the request information indicates that there is no request for the power storage device 400 to supply power in power accommodation, and the request information indicates that there is no request for the power storage device 400 to receive power in power accommodation, the power storage device 400 performs reverse power flow control. Classified into groups.
  • control unit 203 controls charging / discharging of each power storage device 400 according to the group (S103). That is, control unit 203 charges or discharges power storage device 400 according to the group to which power storage device 400 belongs.
  • the reverse power flow control system 200 performs the above operation (S101 to S103) for each time slot.
  • the classification unit 202 classifies the plurality of power storage devices 400 into a plurality of groups for each time period.
  • control unit 203 charges or discharges power storage device 400 according to the group into which power storage device 400 is classified in each time zone.
  • zone is not limited, For example, it is 30 minutes, 1 hour, 3 hours, 6 hours, 12 hours, or 1 day.
  • the acquisition unit 201 may acquire request information corresponding to a plurality of time zones, and request information regarding a request that each of the plurality of power storage devices 400 supplies or receives power for each time zone in power interchange. .
  • the acquisition unit 201 may acquire request information indicating a request time zone in which each of the plurality of power storage devices 400 supplies or receives power in power interchange.
  • the classification unit 202 may classify the plurality of power storage devices 400 into a plurality of groups for each time period according to such request information.
  • the reverse power flow control system 200 may not perform the above series of operations (S101 to S103) for each time period. That is, the reverse power flow control system 200 performs the acquisition of the request information (S101) and the classification of the plurality of power storage devices 400 (S102) before a plurality of time zones, and then controls the charge / discharge for each time zone ( S103) may be performed.
  • FIG. 4 is a flowchart showing a first specific example of the operation of the reverse flow control system 200 shown in FIG.
  • the acquisition unit 201 acquires request information related to power accommodation (S201).
  • the classification unit 202 classifies the plurality of power storage devices 400 into a plurality of groups according to the request information (S202). Basically, these operations (S201 and S202) are the same as the operations (S101 and S102) shown in FIG.
  • the request information further indicates an accommodation request amount, an accommodation request time zone, an accommodation request amount, and an accommodation request time zone.
  • the interchange request amount is a request amount of electric power provided by the power storage device 400
  • the interchange request time zone is a request time zone in which the power storage device 400 supplies power.
  • the interchangeable request amount is a request amount of power received by the power storage device 400
  • the interchangeable request time zone is a request time zone in which the power storage device 400 receives power.
  • the control unit 203 determines (sets) the accommodation amount, accommodation time zone, accommodation amount, and accommodation time zone according to the request information (S203).
  • the accommodation amount is the amount of power that the power storage device 400 provides in power accommodation
  • the accommodation time zone is the time zone in which the power storage device 400 provides power in power accommodation.
  • the accommodated amount is the amount of power received by the power storage device 400 in power accommodation
  • the accommodated time zone is a time zone in which the power storage device 400 receives power in power accommodation.
  • the control unit 203 determines the accommodation amount and the accommodation time zone for each of the one or more power storage devices 400 belonging to the power accommodation group according to the request information. Further, the control unit 203 determines the amount to be accommodated and the accommodation time zone for each of the one or more power storage devices 400 belonging to the power accommodation group according to the request information.
  • control unit 203 compares the total accommodation request amount of one or more power storage devices 400 belonging to the power accommodation group with the total accommodation requirement amount of one or more storage devices 400 belonging to the power accommodation group for each time period. To do. Then, the control unit 203 matches each of the total accommodation amount and the total accommodation amount in each time zone with the smaller one of the total accommodation request amount and the total accommodation demand amount in that time zone.
  • control part 203 determines the amount of accommodation for every time slot
  • control unit 203 determines the amount of accommodation by dividing the total accommodation amount according to the requested amount of accommodation into one or more power storage devices 400 in which the time zone and the accommodation time zone overlap for each time zone. To do. As a result, the control unit 203 determines the accommodation amount and the accommodation time zone for each of the one or more power storage devices 400 belonging to the electricity accommodation group.
  • the control unit 203 determines the accommodation amount, the accommodation time zone, the accommodation amount, and the accommodation time zone in the range of the accommodation requirement amount, the accommodation request time zone, the accommodation request amount, and the accommodation request time zone as described above. Note that the control unit 203 may determine the accommodation amount so as to satisfy the accommodation request amount in order from the power storage device 400 having the largest accommodation request amount, or the accommodation target in order from the power storage device 400 having the largest accommodation request amount. The amount of accommodation may be determined so as to satisfy the required amount.
  • the control unit 203 notifies the accommodation amount, the accommodation time zone, the accommodation amount and the accommodation time zone (S204). Specifically, the control unit 203 notifies each of one or more power storage devices 400 belonging to the power accommodation group of the accommodation amount and the accommodation time zone. Further, the control unit 203 notifies each of the one or more power storage devices 400 belonging to the power accommodation group of the accommodation amount and the accommodation time zone.
  • control unit 203 discharges each of the one or more power storage devices 400 belonging to the power accommodation group according to the accommodation amount and the accommodation time zone.
  • control unit 203 charges each of the one or more power storage devices 400 belonging to the power accommodation group according to the accommodation amount and the accommodation time zone.
  • power accommodation is performed between one or more power storage devices 400 belonging to the power accommodation group and one or more power storage devices 400 belonging to the power accommodation group.
  • control unit 203 detects reverse power flowing out of the power receiving point 300 to the power system in a time zone in which power interchange is performed (S205). For example, the control unit 203 detects reverse power flow via a power sensor installed at or near the power receiving point 300.
  • the control unit 203 notifies each of the one or more power storage devices 400 belonging to the reverse power flow control group of an absorption amount for absorbing power corresponding to the reverse power flow (S206).
  • the absorption amount is the amount of power absorbed by power storage device 400 among the power corresponding to the reverse power flow.
  • the absorption amount may be determined by equally dividing the reverse power flow for one or more power storage devices 400 belonging to the reverse power flow control group, or the reverse power flow may be determined according to the capacity of the power storage device 400 or the chargeable amount. It may be determined by apportioning.
  • the control unit 203 repeats the detection of the reverse power flow (S205) and the notification of the amount of absorption (S206) at a time interval shorter than the time zone (accommodation time zone or to-be-accepted time zone) in which power accommodation is performed. Specifically, this time interval is 1 second, for example.
  • Control unit 203 notifies each power storage device 400 belonging to the reverse power flow control group of the absorption amount, thereby charging each power storage device 400 belonging to the reverse power flow control group according to the absorption amount. As a result, the reverse power flow is absorbed by the reverse power control group.
  • control unit 203 charges information (command) to the power storage devices 400 belonging to the reverse power flow control group at a frequency higher than the frequency of notifying the power storage devices 400 belonging to the power interchange group to the information (command) for discharging. ) May be notified.
  • control unit 203 has information for charging the power storage devices 400 belonging to the reverse power flow control group at a frequency higher than the frequency of notifying the information (command) for charging to the power storage devices 400 belonging to the power accommodation group. Command) may be notified.
  • FIG. 5 is a flowchart showing a second specific example of the operation of the reverse power flow control system 200 shown in FIG.
  • the acquisition unit 201 acquires request information related to power accommodation (S301).
  • the classification unit 202 classifies the plurality of power storage devices 400 into a plurality of groups according to the request information (S302).
  • the control unit 203 determines the accommodation amount, accommodation time zone, accommodation amount, and accommodation time zone according to the request information (S303). The control unit 203 notifies the accommodation amount, the accommodation time zone, the accommodation amount, and the accommodation time zone (S304).
  • the control unit 203 notifies one or more power storage devices 400 belonging to the reverse flow control group of the role of absorbing the reverse flow power (S305). That is, the control unit 203 does not notify the amount of absorption in a time zone in which power interchange is performed, and the power storage devices 400 classified into the reverse flow control group independently detect the reverse flow power, calculate the absorption amount, and Perform charging. As a result, the reverse power flow is absorbed by the reverse power control group.
  • FIG. 6 is a block diagram showing a configuration of power storage device 400 shown in FIG. As shown in FIG. 6, the power storage device 400 includes a control unit 410 and a storage battery 420.
  • the control unit 410 is a controller that charges or discharges the storage battery 420. Information processing and power control performed in power storage device 400 are basically performed by control unit 410.
  • control unit 410 charges or discharges the storage battery 420 according to the control performed by the reverse power flow control system 200.
  • the power storage device 400 is classified into one of a plurality of groups including the above-described power accommodation group, a power accommodation group, and a reverse power flow control group.
  • Control unit 410 charges or discharges storage battery 420 such that power storage device 400 is charged or discharged according to the classified group.
  • the storage battery 420 includes, for example, a rechargeable secondary battery and a power conversion device.
  • Storage battery 420 may include a converter.
  • the storage battery 420 is charged or discharged according to the control performed by the control unit 410.
  • FIG. 7 is a block diagram showing the configuration of the control unit 410 of the power storage device 400 shown in FIG. As shown in FIG. 7, the control unit 410 includes a plan creation unit 411, an acquisition unit 412, and a command unit 413.
  • the plan creation unit 411 is a creator that creates an operation plan of the power storage device 400.
  • the operation plan includes a charge amount, a charge time zone, a discharge amount, a discharge time zone, and the like.
  • the plan creation unit 411 creates an operation plan based on the capacity of the storage battery 420, the remaining battery capacity, the past charge record, the past discharge record, and the like.
  • the power storage device 400 or the control unit 410 may include a detection unit that detects the remaining battery level of the storage battery 420 or a storage unit that stores past charging results and past discharging results. Also good.
  • the plan creation unit 411 may determine whether or not there is a request for the power storage device 400 to supply or receive power in power interchange. Then, the plan creation unit 411 may determine the accommodation request amount, the accommodation request time zone, the accommodation request amount, the accommodation request time zone, and the like in the request determination. The plan creation unit 411 may make a determination (determination) of the request based on an instruction from the customer, or may make a request based on the remaining battery level of the storage battery 420, the past charge record, the past discharge record, and the like. Determination (determination) may be performed.
  • the plan creation unit 411 may determine that there is a request for the power storage device 400 to receive power during power interchange. And the plan preparation part 411 is based on the time until the battery remaining amount of the storage battery 420 reaches an empty state, the capacity of the storage battery 420, the past charge record, the past discharge record, etc. A belt may be determined.
  • the plan creation unit 411 may determine that there is a request for the power storage device 400 to supply power in power interchange. And the plan preparation part 411 is based on the time when the battery remaining amount of the storage battery 420 reaches a fully charged state, the capacity of the storage battery 420, the past charge record, the past discharge record, etc. May be determined.
  • the plan creation unit 411 reversely flows request information indicating that the power storage device 400 has a request to give or receive power in power interchange Notify the control system 200.
  • the plan creation unit 411 sends request information indicating that there is no request for the power storage device 400 to supply or receive power to the reverse power flow control system 200 in the power interchange. You may be notified. Further, when there is no request for the power storage device 400 to supply or receive power, the request information may not be notified.
  • the request information notified by the plan creation unit 411 may further indicate an accommodation request amount and an accommodation request time zone.
  • the request information notified by the plan creation unit 411 may further indicate the requested amount and the requested time zone.
  • plan creation unit 411 acquires the accommodation amount, accommodation time zone, accommodation amount, accommodation time zone or role (reverse power flow control instruction), etc., from the reverse power flow control system 200 via the acquisition unit 412.
  • the plan creation unit 411 acquires the accommodation amount and the accommodation time zone.
  • the plan creation unit 411 acquires the accommodation amount and the accommodation time zone.
  • the plan creation unit 411 acquires the accommodation amount and the accommodation time zone.
  • the plan creation unit 411 acquires a role (reverse power flow control instruction) and the like.
  • the plan creation unit 411 reflects the accommodation amount, accommodation time zone, accommodation amount, accommodation time zone or role obtained from the reverse power flow control system 200 via the acquisition unit 412 in the operation plan. That is, the plan creation unit 411 adjusts the charge amount, the charge time zone, the discharge amount, the discharge time zone, and the like in the operation plan according to the accommodation amount, the accommodation time zone, the accommodation amount or the accommodation time zone, and the like.
  • the plan creation unit 411 may add the role of reverse power flow control to the operation plan. Then, the plan creation unit 411 notifies the operation unit 413 of the operation plan.
  • the acquisition unit 412 is an acquisition unit that acquires information.
  • the acquisition unit 412 acquires the accommodation amount, accommodation time zone, accommodation amount, accommodation time zone or role (reverse power flow control instruction), etc., from the backward flow control system 200, and provides the accommodation amount, accommodation time zone, accommodation amount,
  • the plan creation unit 411 is notified of the available time zone or role (reverse power flow control instruction) or the like.
  • the acquisition unit 412 may notify the command unit 413 of the accommodation amount, accommodation time zone, accommodation amount, accommodation time zone or role (reverse power flow control instruction), and the like.
  • the acquisition unit 412 may acquire information indicating the power flow (reverse power flow) of the power receiving point 103 corresponding to the power storage device 400 and notify the command unit 413 of the acquired information.
  • the acquisition unit 412 may acquire information indicating the power flow (reverse power flow) at the power receiving point 300 and notify the command unit 413 of the acquired information.
  • the acquisition unit 412 may acquire information indicating reverse power flow and notify the command unit 413 of information indicating reverse power flow.
  • the acquisition unit 412 may acquire the absorption amount and notify the command unit 413 of the absorption amount.
  • the command unit 413 is a command device that notifies the storage battery 420 of a charge / discharge command.
  • the charge / discharge command indicates a charge amount when the storage battery 420 is charged or a discharge amount when the storage battery 420 is discharged.
  • an operation plan is acquired from the plan creation unit 411, and a charge / discharge command is generated according to the operation plan.
  • the command unit 413 acquires the accommodation amount, accommodation time zone, accommodation amount, accommodation time zone or role (reverse power flow control instruction), etc. from the acquisition unit 412 regardless of the operation plan, and provides the accommodation amount, accommodation time zone,
  • the charge / discharge command may be generated according to the accommodation amount, the accommodation time zone, the role, or the like.
  • the command unit 413 may increase the discharge amount in the charge / discharge command as the accommodation amount increases in the accommodation time zone.
  • the command unit 413 may increase the charge amount in the charge / discharge command as the accommodation amount increases in the accommodation time zone.
  • the command unit 413 may acquire information indicating the power flow (reverse power flow) of the power receiving point 103 corresponding to the power storage device 400 from the acquisition unit 412 and reflect the information in the charge / discharge command. For example, the command unit 413 may change the amount of charge or the amount of discharge in the charge / discharge command in accordance with a change in power flow (reverse power flow) at the power receiving point 103.
  • the command unit 413 may acquire information indicating the power flow (reverse power flow) of the power receiving point 300 from the acquisition unit 412 and reflect the information in the charge / discharge command.
  • the command unit 413 may acquire information indicating the reverse power flow from the acquisition unit 412 when acquiring the role of reverse power flow control via the acquisition unit 412 or the like.
  • command part 413 may enlarge the charge amount in a charging / discharging instruction
  • the command unit 413 may acquire the absorption amount via the acquisition unit 412. And the instruction
  • FIG. 7 shows an example of the configuration of the control unit 410.
  • the configuration of the control unit 410 is not limited to the example shown in FIG.
  • Control unit 410 may perform other information processing performed in power storage device 400 in order to charge or discharge storage battery 420, or may perform other power control performed in power storage device 400.
  • the power storage device 400 may include the components shown in FIG. That is, the power storage device 400 may include the components shown in FIG.
  • FIG. 8 is a conceptual diagram showing a plurality of groups into which a plurality of power storage devices 400 are classified by the reverse power flow control system 200 shown in FIG.
  • the plurality of power storage devices 400 are classified into three groups: a power accommodation group, a power accommodation group, and a reverse power flow control group.
  • the plurality of power storage devices 400 that are close to each other are classified into the same group, but the plurality of power storage devices 400 that are close to each other may not be classified into the same group. That is, a plurality of power storage devices 400 that are far from each other may be classified into the same group.
  • the power storage device 400 close to the power receiving point 300 is classified into the reverse power flow control group.
  • reverse power flow is efficiently absorbed by the reverse power control group.
  • the power storage device 400 close to the power reception point 300 may not be classified into the reverse power flow control group.
  • the power storage device 400 close to the power receiving point 300 when the power accommodation capacity is large, the power storage device 400 far from the power receiving point 300 may be classified into the reverse power flow control group.
  • the power storage devices 400 classified in the reverse power flow control group can detect reverse power flow
  • the power storage devices 400 classified in the reverse power flow control group may autonomously charge according to the reverse power flow power. .
  • the reverse power flow is absorbed by the reverse power control group.
  • the reverse power control system 200 detects the reverse power flow and charges the power storage device 400 according to the detected reverse power flow. May be executed. As a result, the reverse power flow is absorbed by the reverse power control group.
  • FIG. 9 is a conceptual diagram showing a configuration example in which the power storage devices 400 classified into the reverse power flow control group shown in FIG. 8 detect reverse power flow.
  • the power storage device 400 classified into the reverse power flow control group causes the power flow at the power reception point 300 by the communication line 107 between the power receiving point 300 and the power storage device 400 classified into the reverse power flow control group.
  • Information indicating (reverse power flow) can be acquired. That is, the power storage devices 400 classified in the reverse power flow control group can detect the reverse power flow.
  • FIG. 9 shows an example of a configuration in which the power storage devices 400 classified into the reverse power flow control group detect reverse power flow.
  • the configuration in which the power storage devices 400 classified into the reverse power flow control group detect reverse power flow is not limited to the example of FIG.
  • the power storage devices 400 classified into the reverse flow control group may detect reverse flow power via the communication line 106 illustrated in FIG.
  • the reverse power flow control system 200 classifies the plurality of power storage devices 400 into a plurality of groups.
  • reverse power flow control system 200 may classify a plurality of devices into a plurality of groups including a power interchange group, a power interchange group, and a reverse power control group in the same manner as a plurality of power storage devices 400.
  • the plurality of devices to be classified may include one or more power storage devices 400, may include one or more loads 105, and may include one or more distributed power sources (such as solar power generation devices).
  • reverse power flow control system 200 charges one or more power storage devices 400 belonging to the reverse power flow control group when reverse power flowing out of power receiving point 300 to the power system occurs. This suppresses reverse power flow.
  • the reverse power flow control system 200 discharges one or more power storage devices 400 belonging to the reverse power flow control group, thereby reducing the forward power flow power. It is also possible to suppress it. Thereby, the electric power of power storage device 400 is effectively used.
  • control unit 203 of the reverse power flow control system 200 sets the variation period of the charge amount of the power storage devices 400 belonging to the reverse power flow control group to be greater than the variation period of the charge amount or discharge amount of the power storage devices 400 belonging to other groups. shorten. Thereby, reverse power flow electric power is absorbed appropriately.
  • control unit 203 of the reverse power flow control system 200 limits the total accommodation amount of the one or more power storage devices 400 belonging to the power accommodation group according to the chargeable amount of the one or more power storage devices 400 belonging to the reverse power flow control group.
  • the control unit 203 may make the total accommodation amount smaller than a threshold value obtained by multiplying the chargeable amount by a predetermined safety factor.
  • the control part 203 may restrict
  • the imbalance rate is a balance between the power provided by one or more power storage devices 400 belonging to the power accommodation group and the power received by one or more power storage devices 400 belonging to the power accommodation group with respect to the total accommodation amount. It is a coefficient that statistically represents whether the degree is broken. ⁇ is a predetermined offset value.
  • control unit 203 of the reverse power flow control system 200 determines the total capacity of one or more power storage devices 400 belonging to the power accommodation group according to the chargeable amount of the one or more power storage devices 400 belonging to the reverse power flow control group. As well as the total capacity.
  • control unit 203 of the reverse power flow control system 200 may provide a newly planned amount of accommodation or accommodation for the power storage device 400 that does not satisfy the amount of accommodation or accommodation planned for the past power accommodation.
  • the amount may be limited.
  • the newly planned amount of accommodation or accommodation may be limited.
  • the control unit 203 of the reverse power flow control system 200 acquires information indicating the power flow at the power receiving point 103 (reverse power flow) from the power meter installed at the power receiving point 103, and changes the power flow at the power receiving point 103 (reverse power flow). Alternatively, it may be determined whether the planned amount of accommodation or the amount of accommodation is satisfied.
  • the classification unit 202 includes a plurality of power storage devices 400. Need not be classified.
  • the control unit 203 may not cause the plurality of power storage devices 400 to perform charging or discharging for power interchange.
  • control unit 203 of the reverse power flow control system 200 may reflect the electric power provided or received by the power storage device 400 in the electric power interchange in the electric bill. Specifically, the control unit 203 may reduce the electricity bill as the power provided by the power storage device 400 in the power interchange is larger. In addition, the control unit 203 may increase the electricity bill as the power received by the power storage device 400 in the power interchange increases.
  • control unit 203 may reflect the power provided by the power storage device 400 in the power interchange as the power sale in the electricity bill. In addition, the control unit 203 may reflect the power received by the power storage device 400 in the power interchange as power purchase in the electricity bill.
  • the classification unit 202 of the reverse power flow control system 200 may classify the plurality of power storage devices 400 into four or more groups. For example, an independent group that does not receive or receive power in power interchange and does not absorb reverse flow power may be included in the plurality of groups. Control unit 203 does not have to control charging and discharging of power storage devices 400 belonging to this independent group.
  • the reverse power flow control system 200 has been described based on the embodiments and the like, the present invention is not limited to the above-described embodiments and the like. Forms obtained by subjecting the above embodiments and the like to modifications conceived by those skilled in the art and other forms realized by arbitrarily combining a plurality of components in the above embodiments and the like are also included in the present invention. It is.
  • another component may execute a process executed by a specific component.
  • the order in which the processes are executed may be changed, or a plurality of processes may be executed in parallel.
  • the some component contained in the reverse power flow control system 200 may be provided in one apparatus, and may be distributed and provided in several apparatus.
  • the reverse power flow control system 200 may be expressed as a reverse power flow control device, and the power control system 100 may be expressed as a reverse power flow control system.
  • the present invention can be realized not only as the reverse power flow control system 200 but also as a method including steps (processes) performed by each component constituting the reverse power flow control system 200.
  • these steps may be executed by a computer (computer system).
  • the present invention can be realized as a program for causing a computer to execute the steps included in these methods.
  • the present invention can be realized as a non-transitory computer-readable recording medium such as a CD-ROM on which the program is recorded.
  • each step is executed by executing the program using hardware resources such as a CPU, a memory, and an input / output circuit of a computer. . That is, each step is executed by the CPU obtaining data from a memory or an input / output circuit or the like, and outputting the calculation result to the memory or the input / output circuit or the like.
  • a plurality of components included in the reverse power flow control system 200 and the like may be realized as dedicated or general-purpose circuits, respectively. These components may be realized as a single circuit or may be realized as a plurality of circuits.
  • a plurality of components included in the reverse power flow control system 200 or the like may be realized as an LSI (Large Scale Integration) which is an integrated circuit (IC). These components may be individually made into one chip, or may be made into one chip so as to include a part or all of them.
  • the LSI may be referred to as a system LSI, a super LSI, or an ultra LSI depending on the degree of integration.
  • the integrated circuit is not limited to an LSI, and may be realized by a dedicated circuit or a general-purpose processor.
  • a programmable FPGA (Field Programmable Gate Array) or a reconfigurable processor in which connection and setting of circuit cells inside the LSI can be reconfigured may be used.
  • a plurality of components included in the reverse power flow control system 200 can be integrated. It may be done.
  • a plurality of modes such as the reverse power flow control system 200 are shown as an example. These aspects may be appropriately combined. In addition, any configuration or the like shown in the above embodiment may be added.
  • a reverse power flow control system 200 includes an acquisition unit 201, a classification unit 202, and a control unit 203.
  • the acquisition unit 201 is request information regarding a request for each of the plurality of power storage devices 400 to supply or receive power in power interchange between the plurality of power storage devices 400 that are electrically connected to the power system via the common power receiving point 300. To get.
  • the classification unit 202 classifies the plurality of power storage devices 400 into a plurality of groups including three groups of a power accommodation group, a power accommodation group, and a reverse power flow control group according to the request information.
  • the power interchange group is a group that provides power in power interchange.
  • the power receiver group is a power receiver group that receives power in power accommodation.
  • the reverse power flow control group is a group that absorbs power corresponding to the reverse power flow flowing out to the power system beyond the common power receiving point 300.
  • control unit 203 charges or discharges power storage device 400 according to the group into which power storage device 400 is classified when power storage device 400 is classified into one of the three groups.
  • the information of is output.
  • the reverse power flow control system 200 can appropriately suppress the power flowing out to the power system in the power interchange between the plurality of power storage devices 400.
  • the classification unit 202 may preferentially classify the power storage device 400 into the power interchange group when the request information indicates that there is a request for the power storage device 400 to supply power in the power interchange. Further, the classification unit 202 may preferentially classify the power storage device 400 into the power-accommodated group when the request information indicates that there is a request for the power storage device 400 to receive power in power accommodation.
  • the classification unit 202 also prioritizes the power storage device 400 when the request information indicates that the power storage device 400 does not have a request to supply power in power interchange and that the power storage device 400 does not have a request to receive power in power interchange. Therefore, it is classified into the reverse power flow control group.
  • the reverse power flow control system 200 can appropriately classify the plurality of power storage devices 400 into a plurality of groups in accordance with a request for power interchange.
  • the length of the power line 102 between the first power storage device 400 of the plurality of power storage devices 400 and the common power reception point 300 is equal to the power reception point common to the second power storage device 400 of the plurality of power storage devices 400. It may be shorter than the length of the power line 102 between 300.
  • the classification unit 202 may classify the first power storage device 400 into the reverse power flow control group with priority over the second power storage device 400. Thereby, the reverse power flow control group can efficiently absorb the power corresponding to the reverse power flow.
  • the request information may relate to a request that each of the plurality of power storage devices 400 provides or receives power for each time slot in power interchange.
  • classification unit 202 may classify the plurality of power storage devices 400 into a plurality of groups for each time period according to the request information.
  • the control unit 203 classifies the power storage device 400 in that time zone when the power storage device 400 is classified into one of the three groups in that time zone. You may charge or discharge the electrical storage apparatus 400 according to a group.
  • the reverse power flow control system 200 can change the operation of each of the plurality of power storage devices 400 for each time zone.
  • the request information includes a request amount of power provided by the power storage device 400 in power interchange when there is a request for power storage device 400 to provide power in power interchange, and the power storage device 400 power in power interchange. May indicate a requested time zone.
  • the request information includes, for each power storage device 400, when there is a request for power storage device 400 to receive power during power interchange, the required amount of power received by power storage device 400 during power interchange, and power storage device 400 power during power interchange. You may indicate the request time zone to receive.
  • control unit 203 determines the accommodation amount and the accommodation time zone for each of one or more power storage devices 400 classified into the power accommodation group according to the request information, and notifies the electricity storage device 400 of the accommodation amount and the accommodation time zone. May be.
  • the accommodation amount is the amount of power given by the power storage device 400 in power accommodation
  • the accommodation time zone is a time zone in which the power storage device 400 gives power in power accommodation.
  • control unit 203 determines the accommodation amount and the accommodation time zone for each of the one or more power storage devices 400 classified into the electricity accommodation group according to the request information, and stores the accommodation amount and the accommodation time zone.
  • the device 400 may be notified.
  • the accommodation amount is the amount of power received by the power storage device 400 in power accommodation
  • the accommodation time zone is a time zone in which the power storage device 400 receives power in power accommodation.
  • the reverse power flow control system 200 can determine an appropriate amount of power interchange and an appropriate time zone according to the request information and notify each power storage device 400 of the determined amount.
  • control unit 203 may notify the role of absorbing power corresponding to the reverse power flow to one or more power storage devices 400 classified in the reverse power flow control group.
  • the power storage device 400 classified into the reverse power flow control group can recognize the role of absorbing power corresponding to the reverse power flow power, and can execute an operation of absorbing power corresponding to the reverse power flow power. it can. Therefore, reverse power flow control system 200 can cause power storage devices 400 classified into the reverse power flow control group to perform an operation of absorbing power corresponding to the reverse power flow power.
  • the control unit 203 notifies each of the one or more power storage devices 400 classified in the reverse power flow control group of the amount of power absorbed by the power storage device 400 among the power corresponding to the reverse power flow power. May be.
  • the power storage devices 400 classified into the reverse power flow control group can recognize the absorption amount, and can perform charging according to the absorption amount. And thereby, the electric power corresponding to reverse power flow electric power is absorbed appropriately.
  • control unit 203 limits the amount of power that the one or more power storage devices 400 classified in the power interchange group give in the power interchange according to the chargeable amount of the one or more power storage devices 400 classified in the reverse power flow control group. May be.
  • control unit 203 determines the amount of power received by the one or more power storage devices 400 classified in the power accommodation group according to the chargeable amount of the one or more power storage devices 400 classified in the reverse power flow control group. You may restrict.
  • the reverse power flow control system 200 can appropriately suppress the power flowing out to the power system.
  • the classification unit 202 includes a plurality of power storage devices 400 such that the total capacity of the one or more power storage devices 400 classified in the power accommodation group is smaller than the total capacity of the one or more power storage devices 400 classified in the power accommodation group.
  • the power storage device 400 may be classified into a plurality of groups.
  • the reverse power flow control system 200 can appropriately suppress the power flowing out to the power system.
  • control unit 203 may output information for discharging one or more power storage devices 400 classified in the power accommodation group so that the power accommodation group provides power in the power accommodation. Further, the control unit 203 may output information for charging one or more power storage devices 400 classified into the power accommodation group so that the power accommodation group receives power in the power accommodation. In addition, the control unit 203 may output information for charging one or more power storage devices 400 classified in the reverse flow control group so that the reverse flow control group absorbs power corresponding to the reverse flow power. Good.
  • the reverse power flow control system 200 can charge or discharge one or more power storage devices 400 belonging to the group according to each group.
  • a power storage device 400 is a power storage device 400 included in a plurality of power storage devices 400 electrically connected to an electric power system through a common power receiving point 300, and includes a storage battery 420 and a storage battery 420. And a controller 410 for charging or discharging the battery.
  • the power storage device 400 is classified into one of a plurality of groups including three groups of a power accommodation group, a power accommodation group, and a reverse power flow control group.
  • the power interchange group is a group that provides power in power interchange between the plurality of power storage devices 400.
  • the power accommodation group is a group that receives power in power accommodation.
  • the reverse power flow control group is a group that absorbs power corresponding to the reverse power flow flowing out to the power system beyond the common power receiving point 300.
  • Control unit 410 charges or discharges storage battery 420 so that power storage device 400 is charged or discharged according to the group into which power storage device 400 is classified when power storage device 400 is classified into one of the three groups. .
  • the power storage device 400 can perform support for suppressing power flowing out to the power system in power interchange between the plurality of power storage devices 400.
  • the reverse power flow control method includes an acquisition step (S101), a classification step (S102), and a control step (S103).
  • acquisition step (S101) each of the plurality of power storage devices 400 relates to a request to give or receive power in power interchange between the plurality of power storage devices 400 electrically connected to the power system via the common power receiving point 300. Get request information.
  • the plurality of power storage devices 400 are classified into a plurality of groups including three groups of a power accommodation group, a power accommodation group, and a reverse power flow control group.
  • the power interchange group is a group that provides power in power interchange.
  • the power accommodation group is a group that receives power in power accommodation.
  • the reverse power flow control group is a group that absorbs power corresponding to the reverse power flow flowing out to the power system beyond the common power receiving point 300.
  • control step (S103) for each of the plurality of power storage devices 400, when the power storage device 400 is classified into one of the three groups, the power storage device 400 is charged or discharged according to the group into which the power storage device 400 is classified.
  • Output information for each of the plurality of power storage devices 400 when the power storage device 400 is classified into one of the three groups, the power storage device 400 is charged or discharged according to the group into which the power storage device 400 is classified.
  • a program according to an aspect of the present invention is a program for causing a computer to execute the above reverse power flow control method. Thereby, it is possible to cause the computer to execute the above reverse power flow control method.

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

La présente invention concerne un système de commande de flux d'énergie inverse (200) qui comprend une unité d'acquisition (201) qui acquiert des informations de demande ; une unité de tri (202) qui trie, conformément aux informations de demande, une pluralité de dispositifs de stockage d'énergie (400) en une pluralité de groupes, comportant trois groupes qui sont (i) un groupe d'échange d'énergie qui fournit de l'énergie lors d'un échange d'énergie, (ii) un groupe de sujets d'échange d'énergie qui reçoit de l'énergie lors d'un échange d'énergie, et (iii) un groupe de commande de flux d'énergie inverse qui absorbe l'énergie correspondant à un flux d'énergie inverse circulant vers un système d'alimentation au-delà d'un point de réception d'énergie (300) ; et une unité de commande (203) qui délivre des informations permettant de charger ou décharger un dispositif de stockage d'énergie (400) conformément au groupe dans lequel le dispositif de stockage (400) a été trié, si le dispositif de stockage (400) a été trié dans l'un des trois groupes.
PCT/JP2017/023006 2016-07-07 2017-06-22 Système de commande de flux d'énergie inverse, dispositif de stockage d'énergie et procédé de commande de flux d'énergie inverse WO2018008418A1 (fr)

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WO2011016273A1 (fr) * 2009-08-04 2011-02-10 日本電気株式会社 Système énergétique
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JP2019170021A (ja) * 2018-03-22 2019-10-03 大和ハウス工業株式会社 電力供給システム
JP7203503B2 (ja) 2018-03-22 2023-01-13 大和ハウス工業株式会社 電力供給システム

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