JP7014903B2 - Device management server, device management system and device management method - Google Patents

Description

The present invention relates to a device management server, a device management system, and a device management method.

In recent years, a technique of using a power storage device as a distributed power source (for example, VPP (Virtual Power Plant)) has been known. Against this background, a technique for minimizing the amount of capacity deterioration of the power storage device has also been proposed. Specifically, the capacity deterioration amount of the power storage device is calculated by the following procedure, and the charging or discharging of the power storage device is controlled so that the calculated capacity deterioration amount does not exceed the threshold value.

(A) A function f representing the capacity deterioration rate of the power storage device with respect to the charge rate (SOC; State of Charge) of the power storage device is known.

(B) The time integration value related to the function f is calculated as the capacity deterioration amount.

International Publication No. 2016/114147 Pamphlet

The device management server includes a management unit that manages the target aging deterioration rate that represents the relationship between the target deterioration state of the power storage device and the aging parameter, and a control unit that controls the target power storage device. The control unit identifies the actual deterioration state or the actual deterioration rate of the target power storage device, and based on the target aging deterioration rate, the target deterioration state or the target deterioration rate of the target power storage device with respect to the aging parameter of the target power storage device. Is specified, and the charging or discharging of the target power storage device is controlled based on the comparison result between the actual deterioration state and the target deterioration state, or the comparison result between the actual deterioration rate and the target deterioration rate.

The device management system includes a management unit that manages a target aging deterioration rate that indicates the relationship between the target deterioration state of the power storage device and an aging parameter, and a control unit that controls the target power storage device. The control unit identifies the actual deterioration state or the actual deterioration rate of the target power storage device, and based on the target aging deterioration rate, the target deterioration state or the target deterioration rate of the target power storage device with respect to the aging parameter of the target power storage device. Is specified, and the charging or discharging of the target power storage device is controlled based on the comparison result between the actual deterioration state and the target deterioration state, or the comparison result between the actual deterioration rate and the target deterioration rate.

The device management method includes a step A for managing the target aging deterioration rate showing the relationship of the target deterioration state with respect to the aging parameter of the power storage device, and a step B for controlling the target power storage device. The step B is a step of specifying the actual deterioration state or the actual deterioration rate of the target power storage device, and the target deterioration state or target of the target power storage device with respect to the aging parameter of the target power storage device based on the target aging deterioration rate. The charging or discharging of the target power storage device is performed based on the step of specifying the deterioration rate and the comparison result between the actual deterioration state and the target deterioration state, or the comparison result between the actual deterioration rate and the target deterioration rate. Includes steps to control.

FIG. 1 is a diagram showing a device management system 100 according to an embodiment. FIG. 2 is a diagram showing the device management server 200 according to the embodiment. FIG. 3 is a diagram for explaining the capacity of the power storage device 310 according to the embodiment. FIG. 4 is a diagram for explaining a target aging deterioration rate according to an embodiment. FIG. 5 is a diagram showing a device management method according to an embodiment. FIG. 6 is a diagram for explaining the target aging deterioration rate according to the modified example 1. FIG. 7 is a diagram showing a device management method according to the modification example 1. FIG. 8 is a diagram showing a device management method according to the second modification.

Hereinafter, embodiments will be described with reference to the drawings. In the description of the drawings below, the same or similar parts are designated by the same or similar reference numerals.

However, it should be noted that the drawings are schematic and the ratio of each dimension may differ from the actual one. Therefore, the specific dimensions should be determined in consideration of the following explanation. In addition, it goes without saying that there may be a portion where the relations or ratios of the dimensions of the drawings are different from each other.

[Summary of disclosure]
Here, consider a case where a first power storage device introduced at the first timing and a second power storage device introduced at a second timing after the first timing exist. In such a case, in the above-mentioned technique, since the charging or discharging of the power storage device is controlled so that the amount of capacity deterioration of the first power storage device and the second power storage device approaches, the second power storage device is more than the first power storage device. The power storage device is preferentially used.

As described above, the above-mentioned technique is effective from the viewpoint of obtaining the end timing of the product life of the first power storage device and the second power storage device. However, the product life of the second power storage device introduced after the first power storage device is shorter than the product life of the first power storage device.

Therefore, in one embodiment of the present invention, even when two or more power storage devices having different introduction times are provided, charging or discharging of the power storage device is appropriate while ensuring the long product life of each power storage device. It provides a device management server, a device management system, and a device management method that can be controlled.

The device management server according to the outline of the disclosure includes a management unit that manages a target aging deterioration rate that represents the relationship of the target deterioration state with respect to the aging parameter of the power storage device, and a control unit that controls the target power storage device. The control unit identifies the actual deterioration state or the actual deterioration rate of the target power storage device, and based on the target aging deterioration rate, the target deterioration state or the target deterioration rate of the target power storage device with respect to the aging parameter of the target power storage device. Is specified, and the charging or discharging of the target power storage device is controlled based on the comparison result between the actual deterioration state and the target deterioration state, or the comparison result between the actual deterioration rate and the target deterioration rate.

In the outline of the disclosure, the long product life of each power storage device is guaranteed by introducing the concept of the target aging deterioration rate that considers the aging parameter (aged time) for two or more power storage devices with different introduction times. While appropriately controlling the charging or discharging of the power storage device. Therefore, even when two or more power storage devices having different introduction times are provided, it is possible to appropriately control the charging or discharging of the power storage device while ensuring the long product life of each power storage device. ..

[Embodiment]
(Equipment management system)
Hereinafter, the device management system according to the embodiment will be described.

As shown in FIG. 1, the device management system 100 includes a device management server 200 and a facility 300. In FIG. 1, facility 300A to facility 300C are exemplified as facility 300.

Each facility 300 is connected to the power system 110. In the following, the flow of electric power from the electric power system 110 to the facility 300 is referred to as a power flow, and the flow of electric power from the facility 300 to the electric power system 110 is referred to as reverse power flow.

The device management server 200 and the facility 300 are connected to the network 120. The network 120 may provide a line between the device management server 200 and the facility 300. For example, the network 120 may be the Internet. The network 120 may be a dedicated line such as a VPN (Virtual Private Network).

The device management server 200 is a server managed by a business operator that manages at least the power storage device 310. The equipment management server 200 may be a server managed by an electric power company such as a power generation company, a power transmission and distribution company, a retail company, or a resource aggregator. A resource aggregator is an electric power company that provides reverse power flow to a power generation company, a power transmission and distribution company, a retail company, and the like in a VPP (Virtual Power Plant). In the embodiment, the details of the device management server 200 will be described later (see FIG. 2).

Here, the device management server 200 may transmit a control message instructing the EMS 330 provided in the facility 300 to control the power storage device 310 provided in the facility 300. For example, the device management server 200 may transmit a power flow control message (for example, DR; Demand Response) requesting power flow control, or may send a reverse power flow control message requesting reverse power flow control. Further, the device management server 200 may send a power control message for controlling the operating state of the distributed power source. The degree of control of power flow or reverse power flow may be expressed by an absolute value (for example, XX kW) or a relative value (for example, XX%). Alternatively, the degree of control of power flow or reverse power flow may be expressed at two or more levels. The degree of control of power flow or reverse power flow may be expressed by the power charge (RTP; Real Time Pricing) determined by the current power supply and demand balance, and the power charge (TOU; Time Of Use) determined by the past power supply and demand balance. May be represented by.

The facility 300 has a power storage device 310, a load device 320, and an EMS 330.

The power storage device 310 is a distributed power source that charges and discharges electric power. For example, the power storage device 310 includes a PCS (Power Conditioning System) and a storage battery cell.

The load device 320 is a device that consumes electric power. For example, the load device 320 is an air-conditioning device, a lighting device, an AV (Audio Visual) device, or the like.

The EMS 330 is a device (EMS; Energy Management System) that manages the electric power of the facility 300. The EMS 330 may control the operating state of the power storage device 310 and the load device 320. EMS330 is an example of VEN (Visual End Node).

Here, the EMS 330 transmits a message including an information element indicating the usage status of the power storage device 310 to the device management server 200. The usage status of the power storage device 310 is used to identify the deteriorated state (SOH; State of Health) of the power storage device 310. The information element indicating the usage status of the power storage device 310 may include an information element indicating the current capacity of the power storage device 310 (for example, AC effective capacity (charge), AC effective capacity (discharge)). Further, the information element indicating the usage status of the electricity storage device 310 may include an information element indicating the current resistance value of the electricity storage device 310. The information element indicating the usage status of the power storage device 310 may include an information element indicating the cumulative charge time and the cumulative discharge time of the power storage device 310. Further, the information element indicating the usage status of the power storage device 310 is an information element indicating the cumulative charge amount of the power storage device 310 (for example, AC integrated charge power amount measurement value, AC instantaneous charge power amount measurement value, DC integrated charge power amount measurement). Information elements indicating the value, DC instantaneous charge power amount measurement value, integrated charge power amount measurement value, instantaneous charge power measurement value, instantaneous charge voltage measurement value) and cumulative discharge amount (for example, AC integrated discharge power amount measurement value, AC instantaneous charge amount measurement value) It may include a discharge power amount measurement value, a DC integrated discharge power amount measurement value, a DC instantaneous discharge power amount measurement value, an integrated discharge power amount measurement value, an instantaneous discharge power measurement value, and an instantaneous discharge voltage measurement value). The information element indicating the usage status of the power storage device 310 may include an information element indicating the cumulative number of charge / discharge cycles of the power storage device 310.

For example, the SOH of the power storage device 310 may be actually measured by SOH = (current capacity / initial capacity) × 100. Further, the SOH of the power storage device 310 may be actually measured by SOH = (current resistance value / initial resistance value) × 100. SOH may be measured by executing the maintenance mode at a predetermined cycle (for example, once / two years).

For example, the SOH of the power storage device 310 may be estimated by {(capacity (t1) -deteriorated capacity) / initial capacity} × 100. The capacity (t1) is the capacity actually measured in the maintenance mode executed at the timing t1. The deterioration capacity is estimated by the discharge amount and the charge amount × 1kWh deterioration rate between the timing t1 and the current timing. The 1kWh deterioration rate can be specified by the guaranteed deterioration rate of the power storage device 310. For example, in the case of the power storage device 310 in which a deterioration rate of 20% is guaranteed in 6000 charge / discharge cycles, the 1kWh deterioration rate may be expressed as 1/3600.

In the following, the actually measured SOH and the estimated SOH may be referred to as SOH or an actual deteriorated state without particular distinction.

In the embodiment, the communication between the device management server 200 and the EMS 330 may be performed according to the first protocol. On the other hand, communication between the EMS 330 and the power storage device 310 and the load device 320 may be performed according to a second protocol different from the first protocol. For example, as the first protocol, a protocol compliant with Open ADR (Automated Demand Response) or a proprietary dedicated protocol can be used. For example, as the second protocol, an ECHONET Lite-compliant protocol, SEP (Smart Energy Profile) 2.0, KNX, or a proprietary dedicated protocol can be used. It should be noted that the first protocol and the second protocol may be different, for example, even if both are original dedicated protocols, they may be protocols made according to different rules.

(Device management server)
Hereinafter, the device management server according to the embodiment will be described. As shown in FIG. 2, the device management server 200 has a database 210, a communication unit 220, and a control unit 230. The device management server 200 is an example of a VTN (Visual Top Node).

The database 210, which is a management unit, is stored in a storage device such as a non-volatile memory and / or an HDD. The database 210 stores data about the facility 300 managed by the device management server 200. The facility 300 managed by the device management server 200 may be the facility 300 having a contract with the electric power company. For example, the data regarding the facility 300 may be the demand power supplied from the power system 110 to the facility 300. The data relating to the facility 300 may be data (identification number, manufacturer code, product code, serial number) representing the type of the power storage device 310 provided in the facility 300. The data regarding the facility 300 may be the specifications of the power storage device 310 provided in the facility 300 or the like. The specifications may be the initial capacity (W) and the initial resistance value (Ω) of the power storage device 310. The specifications may be specified by the type of the power storage device 310.

Here, the database 210 manages the target aging deterioration rate representing the relationship of the target SOH with respect to the aging parameter of the power storage device 310. For example, the target aging rate is represented by the target SOH / aging parameter. The aging parameter is the aging time from the installation of the power storage device 310. The aged time may be estimated from the total value of the cumulative discharge amount and the cumulative charge amount from the installation of the power storage device 310. The aged time may be estimated from the total value of the cumulative discharge time and the cumulative charge time from the installation of the power storage device 310. The aging time may be estimated from the cumulative number of charge / discharge cycles from the installation of the power storage device 310. The target SOH, which is the target deterioration state, is a target value of SOH predetermined for the aging parameter. The target aging deterioration rate may be different for each power storage device 310.

The communication unit 220 includes a communication module. The communication unit 220 communicates with the EMS 330 via the network 120. As described above, the communication unit 220 communicates according to the first protocol. For example, the communication unit 220 transmits the first message to the EMS 330 according to the first protocol. The communication unit 220 receives the first message response from the EMS 330 according to the first protocol. Here, the communication unit 220 receives a message from the EMS 330 including an information element indicating the usage status of the power storage device 310.

The control unit 230 includes a memory, a CPU, and the like. The control unit 230 controls each configuration provided in the device management server 200. For example, the control unit 230 instructs the EMS 330 provided in the facility 300 to control the power storage device 310 provided in the facility 300 by transmitting a control message. As described above, the control message may be any of a power flow control message, a reverse power flow control message, and a power supply control message.

Here, the control unit 230 specifies the actual SOH of the power storage device 310 (hereinafter referred to as the target power storage device) to be controlled. For example, the actual SOH is an SOH actually measured or estimated for the target power storage device. The control unit 230 identifies the target SOH for the aging parameter of the target power storage device based on the target aging deterioration rate stored in the database 210, and charges or charges the target power storage device based on the comparison result between the actual SOH and the target SOH. Control the discharge. Specifically, when the actual SOH is worse than the target SOH, the control unit 230 suppresses charging or discharging of the target power storage device in order to suppress deterioration of the target power storage device. On the other hand, when the actual SOH is better than the target SOH, the control unit 230 promotes charging or discharging of the target power storage device in order to positively use the target power storage device.

For example, consider a case where the supply and demand balance of the power system 110 is adjusted by charging or discharging the power storage device 310. In such a case, the control unit 230 controls the charging or discharging of the target power storage device based on the priority determined based on the comparison result between the actual SOH and the target SOH. Specifically, when the actual SOH is worse than the target SOH, the control unit 230 sets a low priority as the priority in order to suppress deterioration of the target power storage device. On the other hand, when the SOH is actually better than the target SOH, the control unit 230 sets a high priority as a priority in order to positively use the target power storage device.

(Capacity of power storage device)
Hereinafter, the capacity of the power storage device according to the embodiment will be described.

As shown in FIG. 3, a lower limit SOC (System of Charge) and an upper limit SOC are set for the total capacity of the power storage device 310. The lower limit SOC is set to the first remaining amount, and the upper limit SOC is set to the second remaining amount, which is a higher remaining amount of electricity than the first remaining amount. Further, the total capacity of the power storage device 310 includes an unusable capacity (lower limit side) for protecting the power storage device 310 and an emergency capacity (BCP; Business Continuity Plan) capacity for responding to an emergency such as a disaster. The lower limit SOC is set so that the remaining charge does not fall below the BCP capacity and the unusable capacity (lower limit side). For example, the lower limit SOC is the total value of the BCP capacity and the unusable capacity (lower limit side). The upper limit SOC is set so that the storage capacity does not reach the unusable capacity (upper limit side). For example, the upper limit SOC is a value obtained by subtracting the unusable capacity (upper limit side) from the total capacity. Under such a premise, the remaining charge (dischargeable capacity) that can be discharged by the power storage device 310 is a value obtained by subtracting the lower limit SOC from the storage capacity. The remaining charge (chargeable capacity) that can be charged by the power storage device 310 is a value obtained by subtracting the storage capacity from the upper limit SOC.

(Target aging rate)
Hereinafter, the target aging deterioration rate according to the embodiment will be described. FIG. 4 illustrates a case in which the power storage device A and the power storage device B exist. In order to simplify the explanation, a case where the target aging deterioration rates of the power storage device A and the power storage device B are the same and the introduction times of the power storage device A and the power storage device B are different will be illustrated. Further, FIG. 4 shows the actual results and predictions of SOH at a certain timing for the power storage device A and the power storage device B.

As shown in FIG. 4, the aged parameter (for example, aged time) of the power storage device A is X _A , and the aged parameter (for example, aged time) of the power storage device B is X _B. The actual SOH (YA) of the power storage device _A is worse than the target SOH (Y _Target ) determined by the target aging deterioration rate. On the other hand, the actual SOH (Y _B ) of the power storage device B is better than the target SOH (Y _Btaget ) determined by the target aging deterioration rate. Although the aged time of the power storage device A is shorter than the aged time of the power storage device B, the reason why the deterioration of the power storage device A is more advanced than the deterioration of the power storage device B is that the installation environment of the power storage device A (air temperature). Etc.) is considered to be worse than the installation environment of the power storage device B.

In such a case, the device management server 200 applies the first control to the power storage device A. The first control is a control for suppressing charging or discharging of the power storage device A in order to suppress deterioration of the power storage device A. For example, when adjusting the supply and demand balance of the electric power system 110, a low priority is set as the priority for using the power storage device A. On the other hand, the device management server 200 applies the second control to the power storage device B. The second control is a control that promotes charging or discharging of the power storage device B in order to positively use the power storage device B. For example, when adjusting the supply and demand balance of the electric power system 110, a high priority is set as the priority for using the power storage device B. Such control may be interpreted as a control in which the suppression of charging or discharging of the power storage device A is supplemented by promoting the charging or discharging of the power storage device B.

(Device management method)
Hereinafter, the device management method according to the embodiment will be described. The flow shown in FIG. 5 is performed periodically.

As shown in FIG. 5, in step S10, the device management server 200 specifies the actual SOH of the target power storage device. As mentioned above, the actual SOH may be measured or estimated.

In step S20, the device management server 200 specifies the target SOH of the target power storage device. As described above, the target SOH is specified by the target aging deterioration rate stored in the database 210 and the aging parameters of the target power storage device.

In step S30, the device management server 200 determines whether or not the actual SOH is worse than the target SOH. When the actual SOH is worse than the target SOH, the process of step S40 is performed. On the other hand, when the actual SOH is not worse than the target SOH, the process of step S50 is performed.

In step S40, the device management server 200 executes the first control for suppressing charging or discharging of the target power storage device.

In step S50, the device management server 200 executes a second control for promoting charging or discharging of the target power storage device.

(Action and effect)
In the embodiment, for two or more power storage devices having different introduction times, the concept of the target aging deterioration rate that considers the aging parameter (aging time) is introduced instead of controlling by simple SOH comparison. Appropriately control the charging or discharging of the power storage device while ensuring the long product life of the power storage device. Specifically, by preferentially using a power storage device having a short aging time, it is possible to suppress a situation in which the product life of the power storage device having a short aging time is shortened.

[Change example 1]
Hereinafter, modification 1 of the embodiment will be described. In the following, the differences from the embodiments will be mainly described.

In the embodiment, a case where the target SOH of the target power storage device is specified based on a predetermined target aging deterioration rate, that is, a theoretical value of the target aging deterioration rate is illustrated. On the other hand, in the modification example 1, the device management server 200 specifies the actual SOH for the aging parameter for two or more reference power storage devices, and calculates the target aging deterioration rate based on the specified actual SOH.

For example, as shown in FIG. 6, consider a case where the power storage device X, the power storage device Y, and the power storage device Z are reference power storage devices. Since it is assumed that the introduction time of each power storage device is different, the aging parameters of each power storage device at the timing shown in FIG. 6 are also different. In such cases, the actual SOH for the aging parameter is specified. In other words, the transition of the actual SOH (hereinafter, the actual aging deterioration rate) is specified for each reference power storage device. The device management server 200 calculates the target aging deterioration rate based on the actual aging deterioration rate of the reference power storage device. Here, the portion where the actual aging deterioration rate cannot be specified may be estimated from the portion where the actual aging deterioration rate can be specified. The method of calculating the target aging deterioration rate based on the actual aging deterioration rate of 2 or more is not particularly limited, but the target aging deterioration rate may be the average value of the actual aging deterioration rates of 2 or more. Of course, the reference power storage device may include the target power storage device.

In the first modification, the device management server 200 may use the target aging deterioration rate calculated based on the actual aging deterioration rate of the reference power storage device as it is. Further, the device management server 200 may correct the theoretical value of the target aging deterioration rate based on the actual aging deterioration rate of the reference power storage device. In such a case, the target aging deterioration rate may be an average value of two or more actual aging deterioration rates and theoretical values of the aging deterioration rate.

(Device management method)
Hereinafter, the device management method according to the modification example 1 will be described. In FIG. 7, similar step numbers are assigned to the same steps as in FIG. The description overlapping with FIG. 5 will be omitted.

As shown in FIG. 7, in step S11, the device management server 200 calculates the target aging deterioration rate based on the transition of the actual SOH (hereinafter, the actual aging deterioration rate). In calculating the target aging rate, the actual SOH specified in step S10 may be used. In step S20, the target SOH of the target power storage device is specified based on the target aging deterioration rate calculated in step S11.

[Change example 2]
Hereinafter, modification 2 of the embodiment will be described. In the following, the differences from the embodiments will be mainly described.

Although not particularly mentioned in the embodiment, in the second modification, the device management server 200 suppresses charging or discharging of the target power storage device when the SOH is actually worse than the target SOH and the control conditions are satisfied. The first control is performed. In other words, even if the SOH is actually worse than the target SOH, the device management server 200 does not perform the first control for suppressing the charging or discharging of the target power storage device when the control conditions are not satisfied.

Here, the control condition may be a condition that charging or discharging of the target power storage device is not urgent. The control condition may be a condition that the suppression of charging or discharging of the target power storage device can be supplemented by promoting the charging or discharging of the power storage device 310 in which the actual SOH is better than the target SOH. When the charging of the target power storage device is the control target, the control condition may be a condition that the remaining storage amount does not fall below the lower limit SOC.

(Device management method)
Hereinafter, the device management method according to the second modification will be described. In FIG. 8, similar step numbers are assigned to the same steps as in FIG. The description overlapping with FIG. 5 will be omitted.

As shown in FIG. 8, in step S31, the device management server 200 determines whether or not the control conditions are satisfied. If the determination result is YES, the process of step S40 is executed. On the other hand, when the determination result is NO, a series of processes is completed.

[Other embodiments]
Although the invention has been described by embodiments described above, the statements and drawings that form part of this disclosure should not be understood as limiting the invention. This disclosure will reveal to those skilled in the art various alternative embodiments, examples and operational techniques.

In the embodiment, the first control is a control for suppressing charging or discharging of the target power storage device. In such control, assuming a case where the power storage device 310 is controlled periodically, the amount of charge or discharge (hereinafter referred to as the scheduled charge / discharge amount) indicated by the nth is indicated by the n-1th. The process may be less than the planned charge / discharge amount.

In the embodiment, the second control is a control that promotes charging or discharging of the target power storage device. Such control increases the scheduled charge / discharge amount indicated by the nth th and the scheduled charge / discharge amount indicated by the n-1th, assuming a case where the power storage device 310 is controlled periodically. It may be a process.

In the embodiment, the second control is a control that promotes charging or discharging of the target power storage device. However, the embodiments are not limited to this. Assuming a case where the power storage device 310 is controlled periodically, the second control may be a control that maintains the current planned charge / discharge amount.

In the embodiment, the device management server 200 actually identifies the SOH. However, the embodiments are not limited to this. In fact, the SOH may be identified by the EMS330 and then reported from the EMS330 to the device management server 200.

In the embodiment, a case where the aging deterioration rate has linearity is exemplified. However, the embodiments are not limited to this. The aging rate does not have to be linear.

In the embodiment, the target SOH of the target power storage device is specified for the aging parameter of the target power storage device based on the target aging deterioration rate, and the target power storage device is charged or discharged based on the comparison result between the target SOH and the actual SOH. Be controlled. However, the embodiments are not limited to this. For example, instead of the actual SOH, the actual deterioration rate in a unit time may be used. When the actual SOH is measured or estimated periodically in a predetermined cycle, the actual deterioration rate is a value obtained by dividing the difference between the nth actual SOH and the n-1th actual SOH by a predetermined cycle. In such a case, the target deterioration rate of the target power storage device with respect to the aging parameter of the target power storage device is specified based on the target aging deterioration rate, and the target power storage is based on the comparison result between the target deterioration rate and the actual deterioration rate. The charging or discharging of the device is controlled. Here, when the target aging deterioration rate has linearity, the target aging deterioration rate can be used as the target deterioration rate. On the other hand, when the target aging deterioration rate does not have linearity, the target aging drop rate at the nth timing can be used as the target deterioration rate.

Although not particularly mentioned in the embodiment, the facility 300 may include, in addition to the power storage device 310, a device that generates electricity using natural energy such as solar power, wind power, hydraulic power, and geothermal power. Further, the facility 300 may include a fuel cell device. There is no limit to the type of fuel cell device. Examples of the fuel cell device include a solid oxide fuel cell (SOFC: Solid Oxide Fuel Cell), a solid polymer fuel cell (PEFC: Polymer Electrolite Fuel Cell), and a phosphoric acid fuel cell (PAFC: Phosphoric Acid Fuel Cell). , Molten Carbonate Fuel Cell (MCFC) and the like.

In the embodiment, the device management server 200 has a database 210. However, the embodiments are not limited to this. The database 210 may be a cloud server provided on the Internet.

Although not particularly mentioned in the embodiment, the EMS 330 provided in the facility 300 does not necessarily have to be provided in the facility 300. For example, some of the functions of the EMS 330 may be provided by a cloud server provided on the Internet. That is, it may be considered that the EMS 330 includes a cloud server.

In the embodiment, the case where the first protocol is a protocol compliant with Open ADR 2.0 and the second protocol is a protocol compliant with ECHONET Lite has been exemplified. However, the embodiments are not limited to this. The first protocol may be any protocol standardized as a protocol used for communication between the device management server 200 and the EMS 330. The second protocol may be any protocol standardized as the protocol used in the facility 300.

As described above, according to one aspect of the embodiment, even when two or more power storage devices having different introduction times are provided, the power storage device can be provided while ensuring the long product life of each power storage device. It is possible to provide a device management server, a device management system, and a device management method that enable appropriate control of charging or discharging.

The entire contents of Japanese Patent Application No. 2018-103552 (filed on May 30, 2018) are incorporated in the present specification by reference.

100 ... Equipment management system, 110 ... Power system, 120 ... Network, 200 ... Equipment management server, 210 ... Database, 220 ... Communication unit, 230 ... Control unit, 300 ... Facility, 310 ... Power storage device, 320 ... Load equipment, 330 … EMS

Claims (7)

A management unit that manages the target aging deterioration rate, which shows the relationship between the target deterioration state and the aging time from installation for two or more power storage devices with different installation times .
Equipped with a control unit that controls the target power storage device,
The control unit
Identify the aging time since the installation of the target power storage device,
Identify the actual deterioration state or actual deterioration rate of the target power storage device, and
Based on the target aging deterioration rate, the target deterioration state or the target deterioration rate of the target power storage device with respect to the aging time of the target power storage device is specified.
A device management server that controls charging or discharging of the target power storage device based on a comparison result between the actual deterioration state and the target deterioration state, or a comparison result between the actual deterioration rate and the target deterioration rate. The device according to claim 1, wherein the control unit identifies the actual deterioration state with respect to the aging time of two or more reference power storage devices, and calculates the target aging deterioration rate based on the specified actual deterioration state. Management server. The device management server according to claim 1, wherein the management unit manages a theoretical value of the target aging deterioration rate. The control unit identifies the actual deterioration state with respect to the aging time for two or more reference power storage devices, and corrects the theoretical value of the target aging deterioration rate based on the specified actual deterioration state.
The device management server according to claim 1. Claims 1 to 3 control the charging or discharging of the target power storage device based on the priority determined based on the comparison result when the control unit adjusts the power supply / demand balance of the power system. The device management server described in any of. A management unit that manages the target aging deterioration rate, which shows the relationship between the target deterioration state and the aging time from installation for two or more power storage devices with different installation times .
Equipped with a control unit that controls the target power storage device,
The control unit
Identify the aging time since the installation of the target power storage device,
Identify the actual deterioration state or actual deterioration rate of the target power storage device, and
Based on the target aging deterioration rate, the target deterioration state or the target deterioration rate of the target power storage device with respect to the aging time of the target power storage device is specified.
A device management system that controls charging or discharging of the target power storage device based on a comparison result between the actual deterioration state and the target deterioration state, or a comparison result between the actual deterioration rate and the target deterioration rate. Step A to manage the target aging deterioration rate, which represents the relationship between the target deterioration state and the aging time from installation for two or more power storage devices with different installation times ,
With step B to control the target power storage device,
The step B is
The step of specifying the aging time from the installation of the target power storage device and
The step of specifying the actual deterioration state or the actual deterioration rate of the target power storage device, and
A step of specifying the target deterioration state or the target deterioration rate of the target power storage device with respect to the aging time of the target power storage device based on the target aging deterioration rate.
A device including a step of controlling charging or discharging of the target power storage device based on a comparison result between the actual deterioration state and the target deterioration state, or a comparison result between the actual deterioration rate and the target deterioration rate. Management method.

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