Control system, control method, and program

Abstract

To provide a control system capable of changing the capacity of the storage capacity available for a user out of the storage capacity of the battery storage system.SOLUTION: A battery storage system 30 is an example of a control system. The battery storage system 30 include a control unit 39 that controls: (1) in the first period, to charge or discharge a portion of a first capacity of battery storage system 30 installed in facility 90 within a first capacity as capacity for users in a facility 90; and (2) in a second period different from the first period, to set the capacity exceeding the first capacity as a capacity for the users, and charge or discharge within the range of the capacity exceeding the first capacity.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a storage battery system installed in a facility such as a home. [Background technology]

[0002] Patent Document 1 discloses a photovoltaic power generation system having a storage battery system that enables a reduction in storage battery capacity and an extension of the life of the storage battery while maintaining the ability to suppress fluctuations in photovoltaic power generation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-140182 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention provides a control system and the like that can vary the storage capacity that can be used by a user out of the storage capacity of a storage battery system. [Means for solving the problem]

[0005] A control system according to one embodiment of the present invention includes a control unit that (1) during a first period, charges or discharges a first capacity, a portion of the storage capacity of a storage battery system installed in a facility, within a range of the first capacity, as a capacity for a user of the facility, and (2) during a second period different from the first period, charges or discharges a capacity exceeding the first capacity, within a range of a capacity exceeding the first capacity, as a capacity for the user.

[0006] A control method according to one aspect of the present invention is a control method for a storage battery system installed in a facility, executed by a computer system, and includes the steps of: during a first period, charging or discharging a first capacity, a portion of the storage capacity of the storage battery system, within a range of the first capacity, as a capacity for a user of the facility; and during a second period different from the first period, charging or discharging a capacity exceeding the first capacity, within a range of a capacity exceeding the first capacity, as a capacity for the user.

[0007] A program according to one aspect of the present invention is a program for causing the computer system to execute the control method. [Effects of the Invention]

[0008] The control system etc. of the present invention can vary the storage capacity of the battery system that can be used by the user. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a block diagram showing a functional configuration of a charge / discharge control system according to an embodiment. [Figure 2] FIG. 2 is a sequence diagram of a first operation example of the charge / discharge control system according to the embodiment. [Figure 3] FIG. 3 is a sequence diagram of a second operation example of the charge / discharge control system according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, the embodiments will be described in detail with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component placement and connection forms, steps, and step order shown in the following embodiments are merely examples and are not intended to limit the present invention. Furthermore, among the components in the following embodiments, components not recited in independent claims will be described as optional components.

[0011] It should be noted that the drawings are schematic diagrams and are not necessarily strict illustrations. In addition, in the drawings, substantially the same components are denoted by the same reference numerals, and overlapping descriptions may be omitted or simplified.

[0012] (Embodiment) [composition] First, the configuration of a charge / discharge control system according to an embodiment will be described below. Fig. 1 is a block diagram showing the functional configuration of a charge / discharge control system according to an embodiment.

[0013] The charge / discharge control system is a system that allows users of the facility 90 (for example, residents of detached houses) and manufacturers and distributors of the storage battery system 30 (hereinafter also referred to as businesses) to share the storage battery system 30. When installing the storage battery system 30 in the facility 90, the user needs to determine the storage capacity of the storage battery units 32, but it is difficult for the user to appropriately determine the storage capacity.

[0014] Therefore, for example, a storage battery system 30 equipped with a storage battery unit 32 with a relatively large power storage capacity is installed in the facility 90, and among the storage batteries included in the storage battery unit 32, a first storage battery is used as a storage battery for the user, and a second storage battery different from the first storage battery is used as a storage battery for the business, etc. In other words, the storage battery unit 32 (power storage capacity) installed for the individual user is shared between the user and the business, etc.

[0015] Initially, the user can freely charge and discharge the first storage battery. Meanwhile, the business operator or the like can freely charge and discharge the second storage battery. If the user feels that the storage capacity of the first storage battery alone is insufficient, the user can request the business operator or the like to change the contract so that the second storage battery can be used in addition to the first storage battery. This allows the user to easily increase the storage capacity available after the storage battery system 30 is installed in the facility 90. In addition, the user can also be allowed to use the second storage battery when a weather warning is issued, when a disaster occurs, etc.

[0016] Here, the first storage battery and the second storage battery are physically separated (i.e., separate hardware) within the housing of the storage battery unit 32, but the power storage capacity of the storage battery unit 32 can also be logically separated into a storage battery unit 32 for a user and a storage battery unit 32 for a business, etc. Furthermore, the storage battery system 30 may include a storage battery unit 32 for a user and a storage battery unit 32 for a business, etc.

[0017] As shown in Fig. 1, the charge / discharge control system 10 includes a solar power generation system 20, a storage battery system 30, a distribution board 40, a plurality of devices 45, a server system 50, a disaster prevention information providing system 60, and a plurality of information terminals 65. Fig. 1 also shows a power grid 70 and a wide-area communication network 80. The solar power generation system 20, the storage battery system 30, the distribution board 40, and the plurality of devices 45 are installed in a facility 90 (more specifically, within the premises of the facility 90). The facility 90 is, for example, a detached house, but may be any other facility.

[0018] The solar power generation system 20 is a power generation system that generates power by converting sunlight into electrical energy. The power generated by the solar power generation system 20 is output to a power conditioner 31. Specifically, the solar power generation system 20 is realized by a PV (Photovoltaic) panel or the like.

[0019] The storage battery system 30 is a system that functions as a power source in the facility 90. The storage battery system 30 includes a power conditioner 31, a storage battery unit 32, and a control device 33.

[0020] The power conditioner 31 is a power conversion device that converts DC power generated by the solar power generation system 20 into AC power, and is sometimes called a PCS (Power Conditioning System). The power conditioner 31 is realized by power conversion circuits such as a DC-DC converter and a DC-AC converter. The power conditioner 31 measures the power generated by the solar power generation system 20 and transmits generated power information indicating the measured generated power to the control device 33. The power conditioner 31 also supplies the power generated by the solar power generation system 20 to multiple devices 45 via the distribution board 40.

[0021] The storage battery unit 32 is realized by a storage battery such as a lithium-ion battery, a charging circuit for charging the storage battery, and a discharging circuit for discharging the storage battery. The storage battery is charged by power generated by the solar power generation system 20 or power supplied from the grid power supply 70. DC power discharged from the storage battery unit 32 is converted into AC power by the power conditioner 31 and supplied to the plurality of devices 45 via the distribution board 40. The DC power discharged from the storage battery unit 32 may be converted into AC power by the power conditioner 31 and output (reverse power flow) to the grid power supply 70 via the distribution board 40.

[0022] The control device 33 controls charging and discharging of the storage battery unit 32 via the power conditioner 31. In FIG. 1 , the control device 33 is illustrated separately from the power conditioner 31, but may be built into the power conditioner 31 as part of the power conditioner 31. Furthermore, the control device 33 does not have to be a device dedicated to the power conditioner 31, and may be a device independent of the power conditioner 31, such as an EMS (Energy Management System) controller. The control device 33 includes a first communication unit 34, a second communication unit 35, an information processing unit 36, and a storage unit 37.

[0023] The first communication unit 34 is a communication circuit that enables the control device 33 to communicate with the power conditioner 31, the distribution board 40, and the like via a local communication network. The first communication unit 34 performs, for example, wireless communication, but may also perform wired communication. There are no particular limitations on the communication standard used for communication by the first communication unit 34.

[0024] The second communication unit 35 is a communication circuit that enables the control device 33 to communicate with the server system 50, the disaster prevention information providing system 60, and the information terminal 65 via the wide area communication network 80. The second communication unit 35 performs, for example, wireless communication, but may also perform wired communication. There are no particular limitations on the communication standard for communication performed by the second communication unit 35.

[0025] The information processing unit 36 ​​processes information related to the control of charging and discharging of the storage battery unit 32. The information processing unit 36 ​​is realized, for example, by a microcomputer, but may also be realized by a processor. The information processing unit 36 ​​includes, as functional components, an acquisition unit 38 and a control unit 39. The functions of the acquisition unit 38 and the control unit 39 are realized, for example, by the microcomputer or processor constituting the information processing unit 36 ​​executing a computer program stored in the storage unit 37.

[0026] The storage unit 37 is a storage device that stores computer programs and the like executed by the information processing unit 36. The storage unit 37 is realized by, for example, a semiconductor memory.

[0027] The distribution board 40 is a device that distributes power supplied from the system power supply 70 to a plurality of branch circuits. Devices 45 are connected to the branch circuits. The distribution board 40 is equipped with power measurement elements such as CTs (Current Transformers) and measures the power consumption of the entire facility 90 (power consumption of the main circuit) and the power consumption of each branch circuit. The distribution board 40 can also measure the amount of power (purchased power amount) supplied from the system power supply 70 to the facility 90. The distribution board 40 also has a communication function and transmits power consumption information indicating the measured power consumption and power purchase amount information indicating the measured amount of purchased power to the control device 33.

[0028] It is not essential that the distribution board 40 has a power measurement function and a communication function. For example, the charge / discharge control system 10 may include a smart meter (a power meter with a communication function) in addition to the distribution board 40, and power consumption information indicating the power consumption of the entire facility 90 may be transmitted from the smart meter to the control device 33.

[0029] The devices 45 are devices (in other words, loads) installed in the facility 90. The multiple devices 45 include lighting equipment, air conditioning equipment, ventilation equipment, air purifiers, electric shutters, electric locks, delivery boxes, and chargers / dischargers for electric vehicles. The multiple devices 45 may also include environmental sensors such as temperature sensors and humidity sensors. The multiple devices 45 may also include sensors other than environmental sensors, such as a window sensor that senses whether a window is open or closed.

[0030] The server system 50 controls the charging and discharging of the storage battery unit 32 by instructing the storage battery system 30 to charge and discharge the storage battery unit 32. The server system 50 is realized by one or more server devices (cloud servers). The server system 50 includes a communication unit 51, an information processing unit 52, and a storage unit 53.

[0031] The communication unit 51 is a communication circuit that enables the server system 50 to communicate with the control device 33, the disaster prevention information providing system 60, and the information terminal 65 via the wide area communication network 80. The communication unit 51 performs, for example, wired communication, but may also perform wireless communication. There are no particular limitations on the communication standard for communication performed by the communication unit 51.

[0032] The information processing unit 52 processes information related to the control of charging and discharging of the storage battery unit 32. The information processing unit 52 is realized, for example, by a microcomputer, but may also be realized by a processor. The information processing unit 52 includes, as functional components, an acquisition unit 54 and a control unit 55. The functions of the acquisition unit 54 and the control unit 55 are realized, for example, by the microcomputer or processor constituting the information processing unit 52 executing a computer program stored in the storage unit 53.

[0033] The storage unit 53 is a storage device that stores computer programs executed by the information processing unit 52. The storage unit 53 is realized by, for example, a semiconductor memory. The disaster prevention information providing system 60 is a system that provides information indicating the issuance of a weather warning or the occurrence of a disaster (hereinafter also referred to as emergency notification) to the control device 33 or the server system 50. The disaster prevention information providing system 60 is realized by one or more servers (cloud servers).

[0034] The information terminal 65 is an information terminal used by a user or a business operator of the facility 90 to access the server system 50. The information terminal 65 is a personal computer, a smartphone, a tablet terminal, or the like.

[0035] [Example 1] Next, a first operational example of the charge / discharge control system 10 will be described. FIG. 2 is a sequence diagram of the first operational example of the charge / discharge control system 10. In the following, of the total storage capacity of the storage battery unit 32, the capacity that can be freely used by the user at first will be referred to as a first capacity, and the storage battery corresponding to the first capacity will be referred to as a first storage battery. The capacity that can be freely used by the business operator or the like at first will be referred to as a second capacity, and the storage battery corresponding to the second capacity will be referred to as a second storage battery. In addition, the capacity that becomes available to the user due to a contract change, the occurrence of a disaster, or the like will be referred to as a third capacity. As described above, the first storage battery and the second storage battery are, for example, separate storage batteries in terms of hardware, but are virtual storage batteries when the storage capacity is set logically.

[0036] For example, a business operator or the like performs initial settings of the storage battery system 30 based on a contract with a user. The business operator or the like performs a predetermined operation to instruct the information terminal 65 on the setting contents, and the information terminal 65 transmits setting request information to the server system 50 based on the predetermined operation (S11).

[0037] The communication unit 51 of the server system 50 receives the setting request information. The control unit 55 transmits setting instruction information for instructing the storage battery system 30 on the setting content indicated in the acquired setting request information to the control device 33 of the storage battery system 30 using the communication unit 51 (S12).

[0038] The second communication unit 35 of the control device 33 receives the setting instruction information, and the information processing unit 36 ​​stores the received setting instruction information in the storage unit 37 (S13). By storing the setting instruction information in the storage unit 37, for example, the following contents are set.

[0039] (1) Setting the primary capacity available to users (2) Setting of secondary capacity that businesses can use (3) Charging settings (4) Discharge settings (5) Usage restriction settings

[0040] The settings related to charging include settings related to the power source used for charging (photovoltaic power generation system or grid power source 70), settings related to conditions for starting or stopping charging, and settings related to priority. The settings related to priority include a user priority setting in which a first storage battery for a user is charged first and the second storage battery is charged after the first storage battery is full, a business priority setting in which a second storage battery for a business, etc. is charged first and the first storage battery is charged after the second storage battery is full, and a simultaneous setting in which charging is performed simultaneously in parallel at a ratio of user:business, etc. = a:b.

[0041] The conditions related to discharge include a setting of a discharge destination, a setting related to conditions for starting or stopping discharge, and a setting of a discharge source. The setting of a discharge destination is a setting such as whether to discharge for power supply to a plurality of devices 45 (self-consumption) or for reverse power flow to the grid power supply 70 (selling power to the power company). The setting of a discharge source is a setting such as whether to discharge power stored in the first storage battery or to discharge from the second storage battery.

[0042] The usage restriction setting is such that both the first and second storage batteries are enabled, or only the first storage battery is enabled and the second storage battery is disabled (not used), or only the second storage battery is enabled and the first storage battery is disabled (not used).

[0043] Thereafter, the control unit 39 charges or discharges the first storage battery and the second storage battery based on the setting instruction information stored in the storage unit 37 (S14). Charging or discharging for the user is performed within a first capacity range, and charging or discharging for the business or the like is performed within a second capacity range.

[0044] The control unit 39 transmits the remaining amount of stored power of the first storage battery and the remaining amount of stored power of the second storage battery after charging or discharging to the server system 50 using the second communication unit 35 (S15). This allows the control unit 55 of the server system 50 to manage the remaining amount of stored power of the first storage battery and the remaining amount of stored power of the second storage battery. The control unit 39 may transmit the amount of power generated by the solar power generation system 20 and the amount of power purchased from the grid power supply 70 to the server system 50, in addition to the remaining amount of stored power. Note that when a logical distinction is made between the user's power storage capacity and the power storage capacity of a business or the like, the remaining amount of stored power of the storage battery unit 32, without distinguishing between the first storage battery and the second storage battery, is transmitted from the control device 33 to the server system 50, and the logical distinction is made in the server system 50.

[0045] Here, when a weather warning is issued or a disaster occurs, the disaster prevention information providing system 60 transmits an emergency notice indicating the issuance of a weather warning or the occurrence of a disaster to the server system 50 (S16a).

[0046] The communication unit 51 of the server system 50 receives the emergency notification. The acquisition unit 54 acquires the emergency notification (S17a), and the control unit 55 transmits emergency instruction information to the control device 33 of the storage battery system 30 using the communication unit 51 based on the acquired emergency notification (S18a).

[0047] The second communication unit 35 of the control device 33 receives the emergency instruction information. The control unit 39 changes the first capacity available to the user to a third capacity (total power storage capacity) based on the received emergency instruction information. For example, the control unit 39 transitions to an emergency mode and charges or discharges the storage battery system 30 based on a manual operation of the control device 33 by the user (S19a). This allows the user to use the total power storage capacity of the storage battery system 30 (storage battery units 32) as an emergency power source.

[0048] Although not shown, when the emergency state is lifted, the disaster prevention information providing system 60 transmits a restoration notification to the server system 50. In this case, in the same procedure as in steps S16a to S19a, as in step S14, the storage battery system 30 returns to a state in which charging or discharging for users is performed within the range of the first capacity, and charging or discharging for businesses, etc. is performed within the range of the second capacity.

[0049] As described above, the control unit 55 of the server system 50 uses the communication unit 51 to instruct the storage battery system 30 to charge or discharge the storage battery units 32 within the first capacity range, with the first capacity set as the capacity for the user, during the first period (normal period), and to charge or discharge the storage battery units 32 within the third capacity range, with the third capacity exceeding the first capacity set as the capacity for the user, during the second period (emergency period). Furthermore, the control unit 39 of the storage battery system 30 charges or discharges the storage battery units 32 within the first capacity range, with the first capacity set as the capacity for the user, during the first period, and to charge or discharge the storage battery units 32 within the third capacity range, with the third capacity exceeding the first capacity set as the capacity for the user, during the second period. The second period is a period during which a weather warning is issued or a disaster occurs, as determined by the emergency notification acquired by the acquisition unit 54 of the server system 50.

[0050] Such a charge / discharge control system 10 can increase the storage capacity of the battery system 30 for users in an emergency, and can make the battery system 30 more usable as an emergency power source.

[0051] In operation example 1, the emergency notification is transmitted from the disaster prevention information providing system 60 to the server system 50 and acquired by the acquisition unit 54, but it may also be transmitted from the disaster prevention information providing system 60 to the control device 33 and acquired by the acquisition unit 38.

[0052] [Example 2] Next, a description will be given of a second operation example of the charge / discharge control system 10. FIG.

[0053] Steps S11 to S15 are the same as those in Operation Example 1, and therefore a description thereof will be omitted. After step S15, the user changes the contract with the business operator or the like to increase the storage capacity that can be used. The business operator or the like performs a predetermined operation to instruct the information terminal 65 on the setting contents, and the information terminal 65 transmits a change notice to the server system 50 based on the predetermined operation (S16b). The change notice is information for changing the storage capacity for the user.

[0054] The communication unit 51 of the server system 50 receives the change notification. The acquisition unit 54 acquires the change notification (S17b), and the control unit 55 transmits change instruction information to the control device 33 of the storage battery system 30 using the communication unit 51 based on the acquired change notification (S18b).

[0055] The second communication unit 35 of the control device 33 receives the change instruction information. The control unit 39 changes the first capacity that the user can use in the setting instruction information stored in the storage unit 37 to the third capacity (total power storage capacity) based on the received change instruction information.

[0056] Thereafter, the control unit 39 charges or discharges the first storage battery and the second storage battery (S19b) based on the setting instruction information stored in the storage unit 37. Charging or discharging for the user is performed within the range of the third capacity, and charging or discharging for the business operator or the like is not performed.

[0057] As described above, the control unit 55 of the server system 50 uses the communication unit 51 to instruct the storage battery system 30 to charge or discharge the storage battery units 32 within the first capacity range, with the first capacity being the capacity for the user, during the first period (normal period), and to charge or discharge the storage battery units 32 within the third capacity range, with the third capacity exceeding the first capacity being the capacity for the user, during the second period (emergency period). Furthermore, the control unit 39 of the storage battery system 30 charges or discharges the storage battery units 32 within the first capacity range, with the first capacity being the capacity for the user, during the first period, and to charge or discharge the storage battery units 32 within the third capacity range, with the third capacity exceeding the first capacity being the capacity for the user, during the second period. The first and second periods are determined based on a change notice for changing the storage capacity for the user based on the contract.

[0058] When a user feels that the power storage capacity is insufficient, such a charge / discharge control system 10 can increase the power storage capacity without the trouble of replacing the storage battery system 30 or the like.

[0059] In operation example 2, the change notification is transmitted from the information terminal 65 to the server system 50 and acquired by the acquisition unit 54, but it may also be transmitted from the information terminal 65 to the control device 33 and acquired by the acquisition unit 38.

[0060] In addition, in Operation Example 2, an example of increasing the storage capacity for a user through a contract is described, but it is also possible to decrease the storage capacity for a user through a contract using a procedure similar to that described in Operation Example 2.

[0061] [Variations] In the above-described Operational Examples 1 and 2, after the setting instruction information was stored in the memory unit 37 of the control device 33, the storage battery unit 32 was automatically charged or discharged based on the setting instruction information. However, the charging or discharging of the storage battery unit 32 may be performed manually. The charging or discharging of the storage battery unit 32 may be performed based on a manual operation of the control device 33 by a user, or the user may manually operate the information terminal 65 to instruct the control device 33 via the server system 50. Similarly, the charging or discharging of the storage battery unit 32 by a business operator or the like may be manually operated on the information terminal 65 to instruct the control device 33 via the server system 50. When the charging or discharging of the storage battery unit 32 is performed by a manual operation of the user, it is sufficient that the charging or discharging is performed within the range of the storage capacity for the user. When the charging or discharging is performed by a manual operation of the business operator or the like, it is sufficient that the charging or discharging is performed within the range of the storage capacity for the business operator or the like.

[0062] Furthermore, in the above-described Operational Examples 1 and 2, the entire power storage capacity of the storage battery unit 32 is set as the power storage capacity for the user during the second period, and no power storage capacity is left for the business operator, etc. However, during the second period, a portion of the power storage capacity may be left for the business operator, etc. In other words, during the second period, the storage battery unit 32 for the business operator, etc. may be able to be charged or discharged.

[0063] Furthermore, the first capacity, the second capacity, and the third capacity in the above-described Operational Example 1 and Operational Example 2 are merely examples. For example, although the third capacity has been described as corresponding to the total power storage capacity of the storage battery units 32, it may be equal to or less than the total power storage capacity of the storage battery units 32, and may be a capacity smaller than the total power storage capacity of the storage battery units 32. Furthermore, although the third capacity has been described as the sum of the first capacity and the second capacity, it may be smaller than the sum of the first capacity and the second capacity, or may be larger than the sum of the first capacity and the second capacity.

[0064] [Effects, etc.] Hereinafter, examples of inventions that can be obtained from the disclosure of this specification will be given, and the effects and the like that can be obtained from these inventions will be explained.

[0065] Invention 1 is a control system that includes a control unit that (1) during a first period, charges or discharges a first capacity, a portion of the storage capacity of a storage battery system 30 installed in a facility 90, within a range of the first capacity as a capacity for users of the facility 90, and (2) during a second period different from the first period, charges or discharges a capacity exceeding the first capacity as a capacity for users within a range of a capacity exceeding the first capacity.

[0066] Such a control system can vary the amount of storage capacity that can be used by a user out of the storage capacity of the storage battery system 30. For example, a user can change the storage capacity after installing the storage battery system 30 in the facility 90.

[0067] Invention 2 is the control system of Invention 1, in which the control system is realized as a server system 50, and the server system 50 has a communication unit 51 that communicates with the storage battery system 30 and a control unit 55, and the control unit 55 performs charging or discharging during the first period and the second period by issuing instructions to the storage battery system 30 using the communication unit 51.

[0068] Such a control system can be realized as a server system 50.

[0069] Invention 3 is the control system of Invention 1, in which the control system is realized as a storage battery system 30, and the storage battery system 30 includes a control unit 39.

[0070] Such a control system can be realized as a storage battery system 30.

[0071] Invention 4 is the control system of any one of Inventions 1 to 3, in which, during a first period, the control unit 55 (or the control unit 39) performs charging or discharging within a range of a second capacity other than the first capacity among the storage capacities of the storage battery system 30, as a capacity for another user different from the user. The other user is the business operator or the like in the above-described embodiments.

[0072] Such a control system allows unused storage capacity to be used by a user as storage capacity for other users.

[0073] Invention 5 is a control system of any of Inventions 1 to 4, further comprising an acquisition unit 54 (or acquisition unit 38) that acquires an emergency notification indicating the issuance of a weather warning or the occurrence of a disaster, and the second period is a period during which a weather warning is issued or a period during which a disaster occurs, as determined by the acquired emergency notification.

[0074] Such a control system can vary the storage capacity available to users when triggered by the issuance of a weather warning or the occurrence of a disaster.

[0075] Invention 6 is a control system of any of Inventions 1 to 4, further comprising an acquisition unit 54 (or acquisition unit 38) that acquires a change notification for changing the storage capacity for the user based on the contract, and the first period and the second period are determined based on the acquired change notification.

[0076] Such a control system can vary the storage capacity that a user can use when a user changes the contract for the storage capacity.

[0077] Invention 7 is a control method for a storage battery system 30 installed in a facility 90, executed by a computer system such as the storage battery system 30 or the server system 50, the control method including the steps of: during a first period, charging or discharging a first capacity, a portion of the storage capacity of the storage battery system, within a range of the first capacity as a capacity for a user of the facility 90; and during a second period different from the first period, charging or discharging a capacity exceeding the first capacity as a capacity for the user within a range of a capacity exceeding the first capacity.

[0078] Such a control method can vary the amount of power storage capacity of the battery system 30 that can be used by the user.

[0079] Invention 8 is a program for causing a computer system to execute the control method of Invention 7.

[0080] According to such a program, the computer system can vary the amount of power storage capacity of the storage battery system 30 that can be used by the user.

[0081] (Other embodiments) Although the embodiments have been described above, the present invention is not limited to the above-described embodiments.

[0082] For example, in the above embodiment, the charge / discharge control system is realized by a plurality of devices, but it may be realized by a single device. The same applies to the other systems described in this specification. Thus, in this specification, a "system" may be realized by a plurality of devices or a single device.

[0083] For example, the control system (storage battery system or server system) may be realized as a single device corresponding to the control device of the storage battery system 30, or may be realized as a single cloud server.

[0084] In the above-described embodiment, the processing performed by a specific processing unit may be performed by another processing unit. The order of multiple processing operations may be changed, or multiple processing operations may be performed in parallel.

[0085] In the above-described embodiments, each component may be realized by executing a software program suitable for that component, or by a program execution unit such as a CPU or processor reading and executing a software program recorded on a recording medium such as a hard disk or semiconductor memory.

[0086] Furthermore, each component may be realized by hardware. For example, each component may be a circuit (or integrated circuit). These circuits may form a single circuit as a whole, or each may be a separate circuit. Furthermore, each of these circuits may be a general-purpose circuit or a dedicated circuit.

[0087] Furthermore, the general or specific aspects of the present invention may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable recording medium such as a CD-ROM, or as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

[0088] For example, the present invention may be realized as a charge / discharge control system, a storage battery system, or a server system according to the above-described embodiments. Furthermore, the present invention may be realized as a method executed by a computer system such as a charge / discharge control system, a storage battery system, or a server system, or as a program (computer program product) for causing a computer system to execute such a method. The present invention may also be realized as a computer-readable non-transitory recording medium on which such a program is recorded.

[0089] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art would think of, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the present invention. [Explanation of symbols]

[0090] 10. Charge and discharge control system 20. Solar power generation system 30 Battery Storage System 31 Power conditioner 32 Battery unit 33 Control device 34 First Communications Department 35 Second Communications Department 36, 52 Information Processing Department 37, 53 Storage section 38, 54 Acquisition Department 39, 55 Control section 40 Distribution board 45 Equipment 50 Server Systems 51 Communications Department 60 Disaster Prevention Information System 65 Information terminal 70 Grid power supply 80 Wide Area Communication Network 90 facilities

Claims

1. (1) during a first period, a first capacity, which is a portion of the storage capacity of a storage battery system installed in a facility, is set as a capacity for a user of the facility and charging or discharging is performed within the range of the first capacity, and (2) during a second period different from the first period, a control unit is provided that sets a capacity exceeding the first capacity as a capacity for the user and charges or discharges within a range of the capacity exceeding the first capacity. Control system.

2. the control system is realized as a server system, The server system includes: a communication unit that communicates with the storage battery system; The control unit, The control unit performs charging or discharging during the first period and the second period by issuing an instruction to the storage battery system using the communication unit. The control system of claim 1 .

3. the control system is realized as the storage battery system, The storage battery system includes the control unit. The control system of claim 1 .

4. the control unit, during the first period, sets a second capacity other than the first capacity among the storage capacities of the storage battery system as a capacity for another user different from the user, and performs charging or discharging within a range of the second capacity. A control system according to any one of claims 1 to 3.

5. An acquisition unit that acquires an emergency notification indicating the issuance of a weather warning or the occurrence of a disaster, The second period is a period during which a weather warning is issued or a disaster occurs, as determined by the acquired emergency notification. A control system according to any one of claims 1 to 3.

6. an acquisition unit that acquires a change notification for changing the power storage capacity for the user based on a contract; The first period and the second period are determined based on the acquired change notice. A control system according to any one of claims 1 to 3.

7. A method for controlling a storage battery system installed in a facility, executed by a computer system, comprising: during a first period, a first capacity, which is a part of the storage capacity of the storage battery system, is set as a capacity for a user of the facility, and charging or discharging is performed within the range of the first capacity; and performing charging or discharging within a range of a capacity exceeding the first capacity, in a second period different from the first period, with a capacity exceeding the first capacity as a capacity for the user. Control method.

8. A program for causing the computer system to execute the control method according to claim 7.

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