JP2012060835A - Power storage device controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power storage device controller which, where supply-demand control of a power system is exercised using a power storage device, does not require a dedicated power storage device for supply-demand control and, hence, helps to lengthen the useful life of the power storage device.SOLUTION: A power storage device controller 100, which controls a power storage device 200 connected to a power system 320, includes a power storage information acquisition unit 110 which acquires discharge device identification information for identifying a discharge device and charge device identification information for identifying a charge device; a control amount acquisition unit 120 which acquires a discharge power value which the power system 320 needs to be supplied from the discharge device or a charge power value which the power system 320 needs to supply to the charge device; a control signal generation unit 130 which generates a discharge control signal for instructing a discharge device indicated by discharge device identification information to discharge an amount of power equal to the discharge power value and a charge control signal for instructing a charge device indicated by charge device identification information to charge an amount of power equal to the charge power value; and a control signal transmission unit 140 which transmits a discharge control signal to the discharge device and a charge control signal to the charge device.

Description

  The present invention relates to a power storage device control device that controls a plurality of power storage devices that repeat charging and discharging connected to an electric power system.

  In recent years, a supply and demand control device using a power storage device such as a secondary battery has attracted attention. In such a supply and demand control apparatus, it is important to control the power storage device while extending the life of the power storage device.

  For this reason, conventionally, a control device that can reduce the adverse effect on the life of the power storage device has been proposed (see, for example, Patent Document 1). In this control device, the adverse effect on the life of the power storage device is reduced by individually setting the charge / discharge level (depth of discharge) according to the deterioration state or use period of the power storage device.

JP 2003-244854 A

  However, the conventional control device has the following two problems.

  The first problem is that in the conventional control device, it is necessary to install a power storage device dedicated to supply and demand control. Here, since the power storage device is expensive and requires a large installation space, it is desirable to reduce the number of installed power storage devices. For this reason, in the said conventional control apparatus, there exists a subject that it is necessary to install the electrical storage apparatus only for supply-and-demand control which causes an increase in cost and an installation space.

  The second problem is that the conventional control device may not be able to extend the life of the power storage device depending on the method of power supply and demand control. Here, when performing power system frequency control using a power storage device, it is necessary to control the power storage device so that charging and discharging are repeated in a short period of time. And when charging / discharging is repeated in a short time, charging / discharging cannot be performed to desired charging depth and discharge depth, and the lifetime of an electrical storage apparatus may become short. For this reason, in the said conventional control apparatus, there exists a subject that the lifetime of an electrical storage apparatus cannot be achieved depending on the control method of an electrical storage apparatus.

  As described above, in the conventional control device, it is necessary to install a power storage device dedicated to supply and demand control, and there is a problem that it may not be possible to extend the life of the power storage device.

  Therefore, the present invention has been made in view of such problems, and when performing power supply / demand control of a power system using a power storage device, a power storage device dedicated to supply / demand control is not required, and the long life of the power storage device is achieved. It is an object of the present invention to provide a power storage device control device that can be realized.

  In order to achieve the above object, a power storage device control device according to the present invention is a power storage device control device that controls a plurality of power storage devices that repeat charging and discharging connected to an electric power system, each of which is a unique charge. Discharge device identification information for identifying a discharge device that is a power storage device in a discharging process up to the specific discharge amount among the plurality of power storage devices that are charged to a specific amount or discharged to a specific discharge amount, and up to the specific charge amount A power storage information acquisition unit that acquires a charging device identification information for identifying a charging device that is a power storage device in a charging process, and a discharge power value that is a power value that the power system needs to be supplied from the discharge device, or A control amount acquisition unit that acquires a charging power value that is a power value that an electric power system needs to supply to the charging device; and when the control amount acquisition unit acquires the discharge power value, the discharging device A charging control signal that causes the discharging device indicated by different information to discharge the electric power of the discharging electric power value is generated, and the charging indicated by the charging device identification information when the control amount acquisition unit acquires the charging electric power value A control signal generation unit that generates a charge control signal for charging the power of the charging power value to the device, and when the discharge control signal is generated, so as to discharge the power of the discharge power value to the power system, The discharging control signal is transmitted to the discharging device, and when the charging control signal is generated, the charging control signal is transmitted to the charging device so as to charge the electric power of the charging power value from the power system. A control signal transmission unit.

  According to this, the discharge control signal is transmitted to the discharge device so that the discharge device discharges the power that needs to be supplied by the power system, and the charging device sends the power that the power system needs to supply from the power system. A charging control signal is transmitted to the charging device so as to charge. Here, the power storage device is a device that charges to a specific charge amount or discharges to a specific discharge amount. The discharge device is a power storage device in a discharging process that discharges to a specific discharge amount. The device is a power storage device in a charging process in which charging is performed up to a specific charge amount. For this reason, for example, utilizing a secondary battery installed in a consumer as a power storage device, or using a storage battery of an electric vehicle as a charging device, without impairing the convenience of the original use. can do. Thereby, the power supply / demand control of an electric power grid | system can be performed, without requiring the electrical storage apparatus only for supply / demand control. In addition, since the power storage device charges or discharges up to a specific charge amount or a specific discharge amount, an optimum charge depth is selected by selecting an optimum specific charge amount and specific discharge amount in consideration of the lifetime. In addition, since charging / discharging at the discharge depth can be performed and the number of times charging / discharging is repeated can be reduced, the life of the power storage device can be extended. Therefore, when power supply / demand control of a power system is performed using a power storage device, a power storage device dedicated to supply / demand control is not required, and the life of the power storage device can be extended.

  Preferably, the power storage information acquisition unit further includes a total value of rated outputs of one or more discharge devices indicated by the discharge device identification information and a rating of one or more charging devices indicated by the charging device identification information. A total value of the output, the control signal generation unit generates a ratio of the discharge power value to the total value of the rated output of the discharge device as the discharge control signal, the total value of the rated output of the charging device A ratio of the charge power value to the charge control signal is generated as the charge control signal, and the control signal transmission unit transmits the discharge control signal to all the discharge devices, and transmits the charge control signal to all the charge devices. .

  According to this, the ratio of the discharge power value to the total value of the rated output of the discharge device is generated as the discharge control signal, and the discharge control signal is transmitted to all the discharge devices. Moreover, the ratio of the charging power value with respect to the total value of the rated outputs of the charging devices is generated as a charging control signal, and the charging control signal is transmitted to all the charging devices. That is, by generating a ratio to the rated output as a control signal, it is not necessary to individually generate a control signal corresponding to each discharge device or each charging device, and the control signal is uniformly applied to each discharging device or each charging device. Can be sent. For this reason, it is possible to easily generate and transmit a control signal and perform supply and demand control of the power system.

  Preferably, the control amount acquisition unit acquires the discharge power value or the charge power value as a system power adjustment value for frequency control of the power system in a predetermined cycle, and the control signal generation unit Is a charge period that is a period in which the control amount acquisition unit acquires the charge power value, and generates the discharge control signal in correspondence with a discharge period in which the control amount acquisition unit acquires the discharge power value. The control signal transmission unit transmits the discharge control signal to the discharge device so as to discharge the power of the discharge power value to the power system during the discharge period. The charging control signal is transmitted to the charging device so as to charge the power of the charging power value from the power system during the charging period.

  According to this, as the adjustment value of the system power for frequency control of the power system, the discharge power value or the charge power value is acquired at a predetermined cycle, and the discharge power value is stored in the power system in the period when the discharge power value is acquired. A control signal is transmitted to the discharging device so as to discharge power, and the control signal is transmitted to the charging device so as to charge the power of the charging power value from the power system during the period when the charging power value is acquired. As a result, the grid power can be adjusted for frequency control of the power grid using the power storage device, so that the ancillary can be used during the period when the power storage device is charging or the power storage device is discharging. Service can be provided. For example, when using a storage battery of an electric vehicle, it is possible to perform control such that an ancillary service is provided only during a charging period.

  Preferably, the power storage information acquisition unit uses charging device identification information as identification information for identifying the first power storage device when the first power storage device which is the discharge device is discharged to the specific discharge amount. When the second power storage device that is the charging device is charged to the specific charge amount, the discharge device identification information is acquired as identification information for identifying the second power storage device.

  According to this, when the first power storage device is discharged to a specific discharge amount, the charging device identification information is acquired as identification information for identifying the first power storage device, and the second power storage device is charged to the specific charge amount. When it is, the discharge device identification information is acquired as identification information for identifying the second power storage device. In other words, the power storage device has a function of switching to charge when discharging is completed and switching to discharging when charging is completed. As a result, the total power value discharged from the power storage device or the total power value charged to the power storage device does not change drastically, and power supply and demand can be controlled stably.

  Preferably, the control signal generator further includes the discharge device or the non-participating device when the non-participating device that is not charged or discharged according to the charge control signal is switched to the charging device. Generating a charge switching signal for switching to the charging device, and generating a discharge switching signal for switching the charging device or the non-participating device to the discharging device when the charging device or the non-participating device switches to the discharging device; When the device or the charging device is switched to the non-participating device, a non-participation switching signal for switching the discharging device or the charging device to the non-participating device is generated, and the control signal transmitting unit further generates the charging switching signal. The charging switching signal is transmitted to the discharging device or the non-participating device that can be switched, When the discharge switching signal is generated, the discharge switching signal is transmitted to the charging device or the non-participating device that can be switched, and when the non-participating switching signal is generated, the non-participating switching signal is switched. Alternatively, the power storage information acquisition unit transmits the charging device identification information as identification information for identifying the power storage device switched to the charging device by receiving the charge switching signal. As the identification information for identifying the power storage device switched to the non-participating device by receiving the non-participation switching signal by acquiring the discharge device identification information as the identification information for identifying the power storage device switched to the discharge device by receiving Acquire non-participating device identification information.

  According to this, a switching signal for switching charging / discharging of the power storage device is generated and transmitted to the power storage device to switch charging / discharging of the power storage device, thereby acquiring charging device identification information, discharging device identification information, or non-participating device identification information To do. Thereby, even if the power storage device does not have a function of switching between charging and discharging, charging and discharging of the power storage device can be switched. As a result, the total power value discharged from the power storage device or the total power value charged to the power storage device does not change drastically, and power supply and demand can be controlled stably.

  Preferably, the power storage information acquisition unit further acquires charge / discharge depth information indicating a depth of charge and a discharge depth at which the life of the power storage device is maximized, and the control signal generation unit is configured so that the discharge device is the charge device. Generates the charge switching signal when discharged to the depth of discharge indicated by the discharge depth information, and generates the discharge switching signal when the charging device is charged to the charge depth indicated by the charge / discharge depth information. To do.

  According to this, the charge switching signal is generated when the battery is discharged to the depth of discharge where the life of the power storage device is the longest, or when the battery is charged to the charge depth where the life of the power storage device is the longest. That is, it is possible to extend the life of the power storage device by switching between charge and discharge at the optimum charge depth and discharge depth that maximizes the life.

  Preferably, the power storage information acquisition unit is configured to obtain a charge depth and discharge of the power storage device when a value obtained by multiplying a charge / discharge amount obtained from a charge depth and a discharge depth by a cycle life that is the number of charge / discharge is maximum. The charge / discharge depth information is acquired using the depth as the charge depth and the discharge depth at which the lifetime of the power storage device is longest.

  According to this, the charge / discharge depth information is acquired using the charge depth and discharge depth when the value obtained by multiplying the charge / discharge amount by the cycle life becomes the maximum, and the charge depth and discharge depth at which the life becomes the longest. Thereby, it is possible to easily determine the depth of charge and the depth of discharge at which the lifetime becomes the longest, and to extend the lifetime of the power storage device.

  Preferably, the control signal generation unit is further predicted that the charging according to the charging control signal does not charge the third power storage device as the charging device to the specific charge amount within a predetermined period. A non-participation switching signal for switching the third power storage device to a non-participating device that is not charged according to the charge control signal, and the third power storage device is connected to the specific storage device within the predetermined period. A quick charge control signal for charging up to a charge amount is generated, and the control signal transmission unit further outputs the non-participation switch signal and the quick charge control signal when the non-participation switch signal and the quick charge control signal are generated. Identification information for identifying the third power storage device that has been switched to the non-participating device by receiving the non-participation switching signal. Obtaining non-participation device identification information as a.

  According to this, when it is predicted that the predetermined charging is not performed in the charging according to the charging control signal, the non-participation switching signal for switching the charging device to the non-participating device in which charging according to the charging control signal is not performed. At the same time, a quick charge control signal for causing the charging device to perform predetermined charging is generated, and the signal is transmitted to the charging device to acquire nonparticipating device identification information for identifying the charging device. For example, when a storage battery of an electric vehicle is charged according to a charge control signal, the charge according to the charge control signal may not be completed at the time that the user wants to use. In this case, the charging of the storage battery of the electric vehicle according to the charging control signal is stopped, and the battery is rapidly charged so that the charging is completed at the time that the user wants to use. As a result, a charging device such as a storage battery of an electric vehicle can be charged to a specific charge amount within a predetermined period, so that the charging device can be used for power supply and demand control without impairing the convenience of the original use. Can be used.

  Preferably, the power storage information acquisition unit further includes dischargeable power amount information indicating a total amount of power that can be discharged by the discharge device, and charging that indicates a total value of power that can be charged by the charging device. Information indicating whether or not to switch to a charging device after the discharge device has been discharged to the specific discharge amount, or after the charging device has been charged to the specific charge amount Transition information which is information indicating whether or not to switch to the discharge device is acquired.

  According to this, the dischargeable power amount information that can be discharged by the discharging device, the chargeable power amount information that can be charged by the charging device, and the transition information that indicates the switching destination of the discharging device or the charging device are acquired. That is, the charge / discharge amount and the charge / discharge time that the power storage device can use for supply / demand control of the power system can be grasped from the dischargeable power amount information, the chargeable power amount information, and the transition information. For this reason, it is possible to determine control sharing between the conventional generator and the power storage device using the information and the like. Thereby, the discharge power value or the charge power value corresponding to the determined control sharing can be acquired, and supply and demand control of the power system can be performed.

  In order to achieve the above object, a power storage device according to the present invention is a power storage device that is connected to a power system and controlled by a power storage device control device via a communication network, and includes a storage battery and the storage battery. A power storage control unit that charges to a specific charge amount or discharges to a specific discharge amount, wherein the power storage control unit is a discharge device in which the power storage device is a power storage device in a discharging process to the specific discharge amount, Identification information identifying which device is a charging device that is a power storage device in a charging process up to a charge amount and a non-participating device that is a power storage device that is not controlled by the power storage device control device is transmitted to the power storage device control device The storage battery transmits power of a power value that the power system needs to receive from the discharge device from the storage information transmission unit and the storage device control device that has received the identification information. A control signal acquisition unit for acquiring a discharge control signal for discharging, or a charge control signal for charging the storage battery with a power value that the power system needs to supply to the charging device; and the acquired A charge / discharge signal generation unit that generates a charge / discharge signal indicating a discharge power value discharged from the storage battery or a charge power value charged according to the discharge control signal or the charge control signal, and the power of the discharge power value or the charge power value In order to charge / discharge the storage battery, the charge / discharge signal transmission unit that transmits the generated charge / discharge signal to the storage battery, and the power storage device are any of the discharge device, the charging device, and the non-participating device. A switching unit that switches the identification information for identifying whether there is any.

  According to this, identification information identifying whether the power storage device is a discharge device, a charging device, or a non-participating device is transmitted to the power storage device control device, and a discharge control signal or a charge control signal is transmitted from the power storage device control device. To get. And according to the acquired discharge control signal or charge control signal, a charge / discharge signal is produced | generated, and the said charge / discharge signal is transmitted to a storage battery. Here, the power storage device is a device that charges to a specific charge amount or discharges to a specific discharge amount. The discharge device is a power storage device in a discharging process that discharges to a specific discharge amount. The device is a power storage device in a charging process in which charging is performed up to a specific charge amount. For this reason, for example, utilizing a secondary battery installed in a consumer as a power storage device, or using a storage battery of an electric vehicle as a charging device, without impairing the convenience of the original use. can do. Thereby, the power supply / demand control of an electric power grid | system can be performed, without requiring the electrical storage apparatus only for supply / demand control. In addition, since the power storage device charges or discharges up to a specific charge amount or a specific discharge amount, an optimum charge depth is selected by selecting an optimum specific charge amount and specific discharge amount in consideration of the lifetime. In addition, since charging / discharging at the discharge depth can be performed and the number of times charging / discharging is repeated can be reduced, the life of the power storage device can be extended. Therefore, when power supply / demand control of a power system is performed using a power storage device, a power storage device dedicated to supply / demand control is not required, and the life of the power storage device can be extended.

  Preferably, the switching unit switches from the identification information for identifying the discharging device or the non-participating device to the identification information for identifying the charging device when the discharging device or the non-participating device is switched to the charging device, When the charging device or the non-participating device is switched to the discharging device, the identification information identifying the charging device or the non-participating device is switched to the identification information identifying the discharging device, and the discharging device or the charging device is not participating When switching to a device, the identification information for identifying the discharge device or the charging device is switched to the identification information for identifying the non-participating device, and the power storage information transmitting unit transmits the switched identification information to the power storage device control device. Send.

  According to this, when the discharging device, the charging device, or the non-participating device is switched to another device, the identification information of the switching destination device is transmitted to the power storage device control device. For example, when the storage battery is discharged to a specific discharge amount, the identification information is switched from the discharge device to the identification information for identifying the charging device, and when the storage battery is charged to the specific charge amount, the identification information is transferred from the charging device. It switches to the identification information which identifies a discharge device, and the said identification information is transmitted to an electrical storage apparatus control apparatus. Thereby, even if the power storage device control device does not have a function of switching between charging and discharging, charging and discharging of the power storage device can be switched.

  In addition, preferably, the switching unit sends the identification information to the non-participating device when it is predicted that the storage battery will not be charged up to the specific charge amount within a predetermined period in charging according to the charging control signal. The storage information transmission unit transmits the switched identification information to the storage device control device, and the charge / discharge signal generation unit transmits the storage battery within the predetermined period. The charge / discharge signal to be charged to a specific charge amount is generated, and the charge / discharge signal transmission unit transmits the generated charge / discharge signal to the storage battery.

  According to this, when it is predicted that charging according to the charging control signal from the power storage device control device will not charge the storage battery to a specific charge amount within a predetermined period, the identification information identifies the non-participating device. Switching to the information, the identification information is transmitted to the power storage device control device. Moreover, the charging / discharging signal which charges a storage battery to the specific charge amount within a predetermined period is transmitted to a storage battery. For example, when a storage battery of an electric vehicle is charged according to a charge control signal, the charge according to the charge control signal may not be completed at the time that the user wants to use. In this case, the charging of the storage battery of the electric vehicle according to the charging control signal is stopped, and the battery is rapidly charged so that the charging is completed at the time that the user wants to use. As a result, a charging device such as a storage battery of an electric vehicle can be charged to a specific charge amount within a predetermined period, so that the charging device can be used for power supply and demand control without impairing the convenience of the original use. Can be used.

  The present invention can be realized not only as such a power storage device control device or a power storage device, but also as a power storage device control system including the power storage device control device and a plurality of power storage devices. . Moreover, it can also be realized as a power storage device control method or a power storage method in which the processing performed by each processing unit included in such a power storage device control device or power storage device is a step. In addition, the power storage device control method or the characteristic processing included in the power storage method can be realized as a program that causes a computer to execute. Needless to say, such a program can be distributed via a recording medium such as a CD-ROM and a transmission medium such as the Internet. Further, it can be realized as an integrated circuit including a power storage device control device or a characteristic processing unit included in the power storage device.

  According to the present invention, in a power storage device control device that controls a power storage device, a power storage device dedicated to supply and demand control is not required, and the life of the power storage device can be extended.

It is a figure which shows the structure of an electrical storage apparatus control system provided with the electrical storage apparatus control apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the electrical storage apparatus control system at the time of classifying the electrical storage apparatus which concerns on Embodiment 1 of this invention into a charging device, a discharge device, or a nonparticipation apparatus. It is a block diagram which shows the function structure of the electrical storage apparatus control apparatus which concerns on Embodiment 1 of this invention, and an electrical storage apparatus. It is a figure which shows an example of the electrical storage information table which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the electrical storage data table which concerns on Embodiment 1 of this invention. It is a figure explaining the charge depth and discharge depth which are set by the user which concerns on Embodiment 1 of this invention. It is a flowchart which shows an example of operation | movement of the electrical storage apparatus control apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows an example of operation | movement of the electrical storage apparatus which concerns on Embodiment 1 of this invention. It is a figure explaining the information which the electrical storage information acquisition part of the electrical storage apparatus control apparatus which concerns on Embodiment 1 of this invention acquires. It is a figure explaining the controlled variable which the controlled variable acquisition part of the electrical storage apparatus control apparatus which concerns on Embodiment 1 of this invention acquires. It is a figure explaining that the control signal transmission part of the electrical storage apparatus control apparatus which concerns on Embodiment 1 of this invention performs discharge command or charge command. It is a figure explaining the process which the switching part which concerns on Embodiment 1 of this invention performs. It is a figure explaining the effect by the electrical storage apparatus control apparatus which concerns on Embodiment 1 of this invention performing supply-and-demand control of an electric power grid | system. It is a flowchart which shows an example of operation | movement of the electrical storage apparatus control apparatus which concerns on Embodiment 2 of this invention. It is a figure explaining the process which the electrical storage apparatus control apparatus which concerns on Embodiment 4 of this invention performs. It is a figure explaining the discharge electric power value or charge electric power value which the control amount acquisition part which concerns on Embodiment 4 of this invention acquires.

  Hereinafter, a power storage device control device according to an embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram showing a configuration of a power storage device control system 10 including a power storage device control device 100 according to Embodiment 1 of the present invention.

  As shown in the figure, the power storage device control system 10 includes a power storage device control device 100 and a power storage device 200. Note that the power storage device control device 100 and the power storage device 200 are connected via a communication network 310, and the power storage device 200 is electrically connected to the power system 320.

  Here, the power system 320 is a power network for supplying power to load devices that use power. For example, load devices installed in an office building 321, a general home 322, a general home 323, a factory 324, and the like. To supply power to the load device. In the figure, the office building 321, the general household 323, and the factory 324 are provided with solar power generation equipment, but any power generation equipment and load equipment may be connected to the power system 320. Absent.

  The power storage device control device 100 is a device that performs supply and demand control of the power system 320 by controlling the power storage device 200 via the communication network 310. That is, the power storage device control device 100 is a computer that provides a so-called ancillary service that adjusts system power for frequency control of the power system 320.

  Here, the power storage device control device 100 is linked to the conventional EMS 400, which is a conventional EMS (a supply and demand control system of a central power supply command station) that is connected to the communication network 310 and controls supply and demand of the entire commercial power system, and exchanges information. I do. Note that the power storage device control device 100 may be configured as a part of the function of the conventional EMS 400 instead of an independent device.

  The power storage device control device 100 is realized by a dedicated computer system or a general-purpose computer system such as a personal computer executing a program. Detailed description of the power storage device control device 100 will be described later.

  The power storage device 200 includes a plurality of power storage devices that repeat charging and discharging. Specifically, the power storage device 200 includes secondary batteries 201a to 201g and electric vehicle storage batteries 202a to 202e as the plurality of power storage devices. The number of secondary batteries 201a to 201g and electric vehicle storage batteries 202a to 202e included in the power storage device 200 is not particularly limited, and may be any number.

  The secondary batteries 201 a to 201 g are secondary batteries that are connected to the power system 320 and installed. That is, the secondary batteries 201 a to 201 g are power storage devices that charge power supplied from the power system 320 and discharge power to the power system 320.

  The secondary batteries 201a to 201g do not have to be secondary batteries dedicated to supply and demand control of the power system 320, and may be secondary batteries for any application. For example, the secondary battery 201f shown in the figure is installed in a general household 323, and surplus power generated from peak power, instantaneous voltage drop countermeasures, blackout compensation, and distributed power sources installed on the customer side. It is a secondary battery installed for the purpose of power storage. In addition, the secondary battery 201g is installed in the factory 324 and, like the secondary battery 201f, is generated from peak shift, instantaneous voltage drop countermeasures, power failure compensation, and a distributed power source installed on the customer side. It is a secondary battery installed for the purpose of storage of surplus power.

  The electric vehicle storage batteries 202a to 202e are storage batteries built in the electric vehicle. In other words, when the electric vehicle storage batteries 202a to 202e are connected to the power system 320, they can charge the power supplied from the power system 320 and discharge the power to the power system 320.

  As described above, the secondary batteries 201a to 201e included in the power storage device 200 are power storage devices installed exclusively for supply and demand control of the power system 320, such as the secondary batteries 201f and 201g, and the storage batteries 202a to 202e for electric vehicles. Is not a power storage device installed exclusively for power supply / demand control of the power system 320 but a power storage device connected mainly to the power system 320 for use by consumers for purposes other than the power supply / demand control.

  Each of the plurality of power storage devices included in power storage device 200 is charged to a specific charge amount or discharged to a specific discharge amount in accordance with a charge / discharge command from power storage device control device 100. This specific charge amount or specific discharge amount is a value specific to each power storage device determined by the user, and may be any value. Note that the specific amount of charge and the specific amount of discharge are determined by the user so that the lifetime of the power storage device is increased and the value obtained by providing the ancillary service of the power storage device is increased.

  Here, a power storage device in a discharging process that discharges to a specific discharge amount is called a discharging device, and a power storage device in a charging process that charges to a specific charge amount is called a charging device. That is, the power storage device 200 is a discharge device until it is discharged to a specific discharge amount, and after being discharged to a specific discharge amount, the discharge device is switched to, for example, a charging device. In addition, the power storage device 200 is a charging device until it is charged up to a specific charge amount, and after being charged up to a specific charge amount, it switches from the charging device to, for example, a discharge device.

  In addition, among the plurality of power storage devices included in the power storage device 200, a power storage device that does not follow the power supply / demand control instruction of the power system 320 by the power storage device control apparatus 100 is referred to as a non-participating device. For example, the electric vehicle storage batteries 202a to 202e are switched to non-participating devices when disconnected from the power system 320 for use by the user, at a set time, or charged to a specific charge amount. In addition, even when the storage batteries 202a to 202e for the electric vehicle are charged to a specific charge amount, the ancillary service may be provided by switching to the discharge device according to the user's selection.

  That is, the discharge device can be switched to a charging device after being discharged to a specific discharge amount, or can be switched to a non-participating device. Similarly, the charging device can be switched to a discharging device after being charged to a specific charge amount, or can be switched to a non-participating device. Note that the user can determine which one to switch to, for example.

  As described above, each of the plurality of power storage devices included in the power storage device 200 is classified as one of a charging device, a discharging device, and a non-participating device. Therefore, hereinafter, a plurality of power storage devices included in the power storage device 200 such as the secondary batteries 201a to 201g and the storage batteries 202a to 202e for the electric vehicle will be described as being classified as a charging device, a discharging device, or a non-participating device.

  FIG. 2 is a diagram showing a configuration of power storage device control system 10 when power storage device 200 according to Embodiment 1 of the present invention is classified as a charging device, a discharging device, or a nonparticipating device.

  As shown in the figure, the power storage device 200 is classified into m discharge devices 1 to m, n charging devices 1 to n, and p non-participating devices 1 to p. Here, the discharge group 210 is a group of m discharge devices 1 to m, the charging group 220 is a group of n charging devices 1 to n, and the non-participating group 230 is p non-participating devices 1. A collection of ~ p.

  The power storage device 200 is switched from a charging device to a discharging device or a non-participating device, or from a non-participating device to a charging device or a discharging device. Therefore, the power storage devices included in the discharging group 210, the charging group 220, and the non-participating group 230 The number changes each time the switch is made.

  Then, the power storage device control device 100 controls the power storage device 200 via the communication network 310 in accordance with an instruction from the conventional EMS.

  Next, a detailed configuration of the power storage device control device 100 will be described.

  FIG. 3 is a block diagram showing functional configurations of power storage device control apparatus 100 and power storage device 200 according to the first embodiment.

  First, the functional configuration of the power storage device control device 100 will be described.

  The power storage device control device 100 is a computer that controls the power storage device 200. As shown in the figure, the power storage device control device 100 includes a power storage information acquisition unit 110, a control amount acquisition unit 120, a control signal generation unit 130, a control signal transmission unit 140, and a storage unit 150.

  The storage information acquisition unit 110, via the communication network 310, of the storage device 200, discharge device identification information that identifies a discharge device included in the discharge group 210, and a charging device that identifies a charging device included in the charge group 220 Identification information and nonparticipating device identification information for identifying nonparticipating devices included in the nonparticipating group 230 are acquired from the power storage device 200.

  The storage information acquisition unit 110 acquires the charging device identification information as the identification information for identifying the first storage device when the first storage device as the discharge device is discharged to a specific discharge amount. When a certain second power storage device is charged to a specific charge amount, the discharge device identification information is acquired as identification information for identifying the second power storage device. That is, when charging / discharging to a specific charging / discharging amount is performed, the charging device and the discharging device are switched, so the power storage information acquisition unit 110 acquires the identification information after the switching.

  For example, when the discharge device is discharged to a specific discharge amount set by the user, the discharge device changes state to the charging device if the next transition state is charging. Similarly, when the charging device is charged to a specific charge amount set by the user, the charging device changes state to the discharging device if the next transition state is discharging. For this reason, the electrical storage information acquisition part 110 acquires the identification information after such a state transition.

  In addition, the power storage information acquisition unit 110 further includes a discharge group rated total amount that is a total value of rated outputs of one or more discharge devices indicated by the discharge device identification information, and one or more charging devices indicated by the charging device identification information. The charge group rated total amount that is the total value of the rated output is acquired. That is, the power storage information acquisition unit 110 acquires the total value of the rated outputs of the discharging devices included in the discharging group 210 and the total value of the rated outputs of the charging devices included in the charging group 220.

  For example, the power storage information acquisition unit 110 acquires individual rated output values transmitted from the respective power storage devices, stores them in the storage unit 150, and integrates the individual rated output values to thereby calculate the discharge group rating. Get the total amount and charging group rated total amount.

  The storage information acquisition unit 110 acquires the discharge device identification information, the charging device identification information, the nonparticipating device identification information, the discharge group rated total amount, and the charging group rated total amount at a predetermined cycle. The predetermined period may be any period, for example, a second order, minute order, time order interval, or the like. The storage information acquisition unit 110 may acquire the discharge device identification information, the charging device identification information, and the nonparticipating device identification information when the identification information of the storage device changes, even if it is not in a predetermined cycle. .

  The control amount acquisition unit 120 acquires a discharge power value that is a power value that the power system 320 needs to receive from the discharge device, or a charge power value that is a power value that the power system 320 needs to supply to the charging device. To do. Here, the control amount acquisition unit 120 acquires a discharge power value or a charge power value at a predetermined cycle as an adjustment value of the system power for frequency control of the power system 320. The predetermined period may be any period, for example, a second order, minute order, time order interval, or the like.

  Specifically, the conventional EMS obtains system information such as “total amount of load”, “total amount of power generation”, and “interconnection power flow” from the power system 320, so that the discharge power value required for the power storage device 200 is obtained. And the charge power value are calculated, and the control amount acquisition unit 120 acquires the discharge power value and the charge power value from the conventional EMS.

  When the control amount acquisition unit 120 acquires the discharge power value, the control signal generation unit 130 generates a discharge control signal that causes the discharge device indicated by the discharge device identification information to discharge the power of the discharge power value, and acquires the control amount. When the charging power value is acquired by the unit 120, a charging control signal that causes the charging device indicated by the charging device identification information to be charged with the charging power value is generated.

  Specifically, the control signal generation unit 130 generates a ratio of the discharge power value with respect to the total rated output of the discharge device as a discharge control signal, and charges the ratio of the charge power value with respect to the total rated output of the charging device. Generated as a control signal. In addition, the control signal generation unit 130 generates a discharge control signal corresponding to the discharge period in which the control amount acquisition unit 120 acquires the discharge power value, and the period in which the control amount acquisition unit 120 acquires the charge power value The charge control signal is generated in correspondence with the charge period.

  Note that the control signal generation unit 130 may generate the discharge control signal or the charge control signal by a different method. For example, the control signal generation unit 130 generates a power value to be discharged by each discharging device as a discharging control signal for each discharging device, and generates a power value to be charged by each charging device as a charging control signal for each charging device. You may decide.

  When the control signal transmission unit 140 generates the discharge control signal, the control signal transmission unit 140 transmits the discharge control signal to the discharge device so that the power of the discharge power value is discharged to the power system 320, and the charge control signal is generated. In addition, a charging control signal is transmitted to the charging device so as to charge the power of the charging power value from the power system 320.

  Specifically, the control signal transmission unit 140 transmits a discharge control signal to all the discharge devices included in the discharge group 210 so that the power of the discharge power value is discharged to the power system 320 during the discharge period. The charging control signal is transmitted to all the charging devices included in the charging group 220 so as to charge the power of the charging power value from the power system 320.

  The storage unit 150 is a semiconductor memory or the like that stores a power storage information table 151 that is a data table used for controlling the power storage device 200 by the power storage device control apparatus 100. The power storage information table 151 will be described later.

  The power storage device control apparatus 100 includes a display unit such as a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display), and an input unit such as a keyboard or a mouse, in addition to the processing unit. Also good.

  Next, the functional configuration of the power storage device 200 will be described.

  As shown in the figure, each power storage device included in power storage device 200 includes a power storage control unit 250 and a storage battery 260. The power storage control unit 250 is a processing unit that controls the storage battery 260 and is incorporated in, for example, an inverter. The storage battery 260 is a storage battery that is charged to a specific charge amount and discharged to a specific discharge amount in accordance with an instruction from the power storage control unit 250.

  The power storage control unit 250 includes a power storage information transmission unit 251, a control signal acquisition unit 252, a charge / discharge signal generation unit 253, a charge / discharge signal transmission unit 254, a switching unit 255, and a storage unit 256.

  The power storage information transmission unit 251 is not controlled by the discharge device that is the power storage device in the discharging process until the specific discharge amount, the charging device that is the power storage device in the charging process up to the specific charge amount, and the power storage device control device 100 Identification information that identifies which of the non-participating devices that are power storage devices is transmitted to the power storage device control device 100.

  Specifically, the power storage information transmission unit 251 reads out the identification information stored in the storage unit 256 described later, and transmits it to the power storage device control apparatus 100. Here, the identification information for identifying the discharge device is discharge device identification information, the identification information for identifying the charging device is charging device identification information, and the identification information for identifying the non-participating device is non-participating device identification information. .

  In addition, the power storage information transmission unit 251 transmits the rated output of the power storage device to the power storage device control device 100. Specifically, the power storage information transmission unit 251 reads the rated output stored in the storage unit 256 described later, and transmits the read rated power to the power storage device control apparatus 100.

  The control signal acquisition unit 252 is a discharge control signal for causing the storage battery 260 to discharge power having a power value that the power system 320 needs to receive from the discharge device from the power storage device control device 100 that has received the identification information, or The electric power system 320 acquires a charge control signal for causing the storage battery 260 to be charged with an electric power value that needs to be supplied to the charging device.

  The charge / discharge signal generation unit 253 generates a charge / discharge signal indicating the discharge power value discharged from the storage battery 260 or the charge power value charged according to the discharge control signal or the charge control signal acquired by the control signal acquisition unit 252.

  That is, when the discharge control signal or the charge control signal is a ratio to the rated output, for example, the charge / discharge signal generation unit 253 calculates the charge / discharge power value by multiplying the rated output by the ratio and generates the charge / discharge signal. . Here, the charge / discharge signal may be a charge / discharge power value for charging / discharging the storage battery 260 or a current value for charging / discharging.

  The charge / discharge signal transmission unit 254 sends the charge / discharge signal to the storage battery 260 in order to charge / discharge the discharge power value indicated by the charge / discharge signal generated by the charge / discharge signal generation unit 253 or the power of the charge power value to the storage battery 260. Send.

  The switching unit 255 switches identification information that identifies whether the power storage device is a discharging device, a charging device, or a non-participating device. That is, when the discharging device or the nonparticipating device is switched to the charging device, the switching unit 255 switches the identification information identifying the discharging device or the nonparticipating device to the identification information identifying the charging device, and the charging device or the nonparticipating device discharges. When switching to a device, switching from identification information identifying the charging device or the non-participating device to identification information identifying the discharging device, and when the discharging device or the charging device switches to a non-participating device, the discharging device or the charging device Is switched from the identification information for identifying the non-participating device to the identification information for identifying the non-participating device.

  For example, when the storage battery 260 is discharged to a specific discharge amount, the switching unit 255 switches the identification information from identification information that identifies the discharge device to identification information that identifies the charging device, and the storage battery 260 has a unique charge amount. When the battery is charged up to, the identification information is switched from the identification information for identifying the charging device to the identification information for identifying the discharging device.

  Specifically, the switching unit 255 performs the switching by referring to the SOC (State Of Charge) of the power storage device stored in the storage unit 256 described later. Note that the SOC is an index indicating the charging rate (remaining capacity) of the power storage device. Then, the switched identification information is transmitted at a timing when the power storage information transmission unit 251 transmits information to the power storage device control apparatus 100 at a predetermined cycle. Note that the power storage information transmission unit 251 may transmit the switched identification information to the power storage device control device 100 when the identification information is switched, even if the cycle is not a predetermined cycle.

  The storage unit 256 is a semiconductor memory or the like that stores a storage data table 257 that is a data table used for controlling the storage battery 260 by the storage control unit 250. The power storage data table 257 will be described later.

  In addition to the processing unit, the power storage control unit 250 may include a display unit such as a CRT (Cathode-Ray Tube) or an LCD (Liquid Crystal Display), or an input unit such as a touch panel.

  Next, the power storage information table 151 stored in the storage unit 150 and the power storage data table 257 stored in the storage unit 256 will be described in detail.

  FIG. 4 is a diagram showing an example of the power storage information table 151 according to the first embodiment.

  As shown in the figure, the power storage information table 151 includes a “charge group rated total amount” that is a total value of the rated outputs of the charging devices included in the charging group 220 and a total of the rated outputs of the discharging devices included in the discharging group 210. It is a data table including information of “discharge group rated total amount” which is a value.

  The “charge group rated total amount” and the “discharge group rated total amount” are acquired at a predetermined cycle by the power storage information acquisition unit 110 and stored in the storage unit 150 by the power storage information acquisition unit 110, whereby the power storage information table 151 is stored. Updated.

  FIG. 5 is a diagram showing an example of the power storage data table 257 according to the first embodiment.

  As shown in the figure, the power storage data table 257 includes information on “rated output” of the power storage device, “affiliation information” that is identification information for identifying the power storage device, “transition information”, and “SOC”. It is a data table that contains.

  “Affiliation information” is information indicating whether the power storage device belongs to the discharge group 210, the charge group 220, or the non-participating group 230. The discharge device identification information for identifying the discharge device, and the charge for identifying the charge device This information is either device identification information or nonparticipating device identification information for identifying a nonparticipating device.

  “Transition information” is information indicating which of the discharge group 210, the charge group 220, and the non-participation group 230 the device is switched to when the power storage device is switched from the discharge device, the charging device, or the non-participating device to another device. It is. In the case where the power storage device is a non-participating device, the transition information also includes information regarding the transition time such as when to transition.

  That is, when the transition information of the discharge device is a charging group, the discharge device is switched to the charging device, and when the transition information of the discharge device is a non-participating group, the discharge device is switched to the non-participating device. In addition, when the transition information of the charging device is the discharge group, the charging device is switched to the discharging device, and when the charging device transition information is the non-participating group, the charging device is switched to the non-participating device. Further, when the transition information of the non-participating device is the discharge group, the non-participating device is switched to the discharging device, and when the transition information of the non-participating device is the charging group, the non-participating device is switched to the charging device.

  In addition, although the said transition information may be defined how, it is defined by the user, for example. That is, for example, the transition information may be determined by scheduling the transition state of the power storage device by the user, such as switching to a non-participating device after repeating charging and discharging a predetermined number of times. Further, the transition information may be determined by setting mode information of the transition state of the power storage device by the user, such as a charging and discharging repetition mode and a transition mode to a non-participating device.

  “SOC” is information indicating the current SOC value and the upper and lower limit values (operating values) of the SOC. Specifically, “90%” of “90% (10 to 95%)” shown in the figure indicates that the current SOC value is 90%. In addition, “(10 to 95%)” indicates the upper and lower limit values of the SOC in operation. Specifically, the SOC can be charged up to 95% (the charging depth is set to SOC 95%). It shows that the SOC can be discharged up to 10% (the depth of discharge is set to SOC 10%).

  Switching unit 255 refers to the current SOC value and the upper and lower limit values of the power storage device included in power storage data table 257, for example, when the current SOC value exceeds the upper limit value or the current SOC value falls below the lower limit value. The affiliation information included in the power storage data table 257 is rewritten with the identification information indicated by the transition information. In addition, the switching unit 255 rewrites the transition information with identification information indicating a device to be switched next.

  Here, the charging depth and the discharging depth indicating the upper and lower limit values of the SOC included in the power storage data table 257 are set by the user. Below, the depth of charge and the depth of discharge set by the user will be described.

  FIG. 6 is a diagram illustrating the charge depth and the discharge depth set by the user according to the first embodiment. Specifically, (a) of the figure is a graph showing the relationship between the discharge depth and the cycle life when the charge depth is constant as the characteristics of the power storage device. Moreover, (b) of the figure is a graph which shows the relationship between the depth of discharge and the cycle life in consideration of the charging depth. Here, the cycle life is the number of times the power storage device can be charged and discharged.

  As shown to (a) of the figure, the graph A is a graph with a gentle inclination, and the graph B is a graph with a steeper inclination than the graph A. FIG. Here, graph A and graph B show characteristics of different power storage devices. In graph A, the value obtained by multiplying the discharge depth and the cycle life increases as the discharge depth increases. In graph B, the value obtained by multiplying the discharge depth and the cycle life increases as the discharge depth decreases. And

  Then, the longer the value obtained by multiplying the depth of discharge and the cycle life, the longer the life of the power storage device. For this reason, the depth of discharge when the lifetime is the longest differs depending on the power storage device.

  Further, as shown in (b) of the figure, when the charging depth is also taken into consideration, if the charging depth is different, the relationship between the discharge depth and the cycle life also changes. Here, a plurality of straight lines in the graph shown in the figure indicate characteristics at different charging depths in the same power storage device.

  For example, at the same discharge depth, the shorter the charge depth, the longer the cycle life. And the lifetime of an electrical storage apparatus becomes so long that the value which multiplied the amount of charge / discharge obtained from the depth of charge and the depth of discharge and cycle life becomes large. For this reason, the depth of charge and the depth of discharge when the lifetime is the longest vary depending on the power storage device. Then, the charging depth and the discharging depth at which the lifetime of the power storage device is extended and the consideration obtained by providing the ancillary service of the power storage device is increased.

  Next, processing performed by the power storage device control device 100 and the power storage device 200 will be described.

  FIG. 7 is a flowchart showing an example of the operation of power storage device control apparatus 100 according to the first embodiment.

  FIG. 8 is a flowchart showing an example of the operation of the power storage device 200 according to the first embodiment.

  First, as shown in FIG. 7, the following processing (S104 to S120) is repeatedly performed in a predetermined cycle during the control period of the power storage device control apparatus 100 (loop 1: S102 to S122).

  First, the power storage information acquisition unit 110 acquires affiliation information of each power storage device included in the power storage device 200 (S104).

  Here, as illustrated in FIG. 8, the power storage information transmission unit 251 of each power storage device included in the power storage device 200 transmits the affiliation information and the rated output to the power storage device control apparatus 100 (S202). Specifically, the power storage information transmission unit 251 reads the affiliation information and the rated output included in the power storage data table 257 from the storage unit 256 and transmits them to the power storage device control apparatus 100. Thereby, the power storage information acquisition unit 110 receives the affiliation information transmitted by the power storage information transmission unit 251.

  FIG. 9 is a diagram illustrating information acquired by the power storage information acquisition unit 110 of the power storage device control apparatus 100 according to the first embodiment.

  As shown in the figure, the power storage information acquisition unit 110 of the power storage device control device 100 acquires affiliation information from each power storage device included in the power storage device 200 via the communication network 310. That is, the storage information acquisition unit 110 acquires “discharge group” as the discharge device identification information from the discharge devices 1 to m included in the discharge group 210, and the charging device from the charging devices 1 to n included in the charge group 220. “Charging group” is acquired as identification information, and “non-participating group” is acquired as non-participating device identification information from non-participating devices 1 to p included in non-participating group 230.

  Returning to FIG. 7, the power storage information acquisition unit 110 acquires the discharge group rated total amount and the charge group rated total amount (S106).

  Specifically, as illustrated in FIG. 9, the power storage information acquisition unit 110 of the power storage device control apparatus 100 transmits the power storage information transmission unit 251 of each power storage device included in the power storage device 200 via the communication network 310. Get the rated output. For example, the power storage information acquisition unit 110 acquires a rated output “1.0 kW” from the discharging device 1 and acquires a rated output “2.0 kW” from the charging device 1.

  And the electrical storage information acquisition part 110 totals the rated output of the discharge devices 1-m contained in the discharge group 210, acquires discharge group rated total amount, and the rating of the charging devices 1-n contained in the charge group 220 The total charge group rated amount is obtained by summing the outputs. For example, the power storage information acquisition unit 110 acquires the discharge group rated total amount “1000.0 MW” and the charge group rated total amount “800.0 MW”.

  Then, the power storage information acquisition unit 110 updates the power storage information table 151 by causing the storage unit 150 to store the acquired discharge group rated total amount and charge group rated total amount. As a result, as shown in FIG. 4, the power storage information table 151 is rewritten to “1000.0 MW” as the discharge group rated total amount and “800.0 MW” as the charge group rated total amount.

  Returning to FIG. 7, next, the control amount acquisition unit 120 acquires the control amount from the conventional EMS (S108). Specifically, the control amount acquisition unit 120 acquires the control amount from the conventional EMS via the communication network 310. Note that the control amount acquisition unit 120 may acquire the control amount from the conventional EMS via a dedicated line that connects the control amount acquisition unit 120 and the conventional EMS without using the communication network 310.

  Here, the controlled variable is a discharge power value that is a power value that the power system 320 needs to receive from a discharge device included in the discharge group 210 or a power system 320 supplied to a charging device included in the charge group 220. It is a charging power value that is a power value that needs to be performed.

  FIG. 10 is a diagram illustrating the control amount acquired by the control amount acquisition unit 120 of the power storage device control apparatus 100 according to the first embodiment.

  Specifically, (a) in the figure is a diagram illustrating a charge / discharge pattern that the power system 320 requires the power storage device 200. Moreover, (b) of the same figure is a figure which shows the discharge electric power value which the electric power system 320 needs to receive from the discharge device of the discharge group 210. FIG. Moreover, (c) of the figure is a figure which shows the charging electric power value which the electric power grid | system 320 needs to supply to the charging device of the charging group 220. FIG.

  As shown to (a) of the figure, the electric power grid | system 320 receives supply of the electric power of "A" and "B" shown in the figure from the electrical storage apparatus 200, and after that, "C" and "D" "And the power storage device 200 is requested to receive the power supply" E "from the power storage device 200.

  That is, as shown in FIG. 5B, “A”, “B”, and “E” are discharge power values that the power system 320 needs to receive from the discharge devices of the discharge group 210. Also, as shown in (c) of the figure, “C” and “D” are charging power values that the power system 320 needs to supply to the charging device of the charging group 220.

  For this reason, the control amount acquisition unit 120, from the conventional EMS, the discharge power value of “A”, the discharge power value of “B”, the charge power value of “C”, the charge power value of “D”, and “E” The control amount is acquired in the order of the discharge power values.

  Returning to FIG. 7, next, the control signal generation unit 130 determines whether or not the control amount acquisition unit 120 has acquired the discharge power value as the control amount (S110). For example, in the case of “A”, “B”, and “E” illustrated in FIG. 10, the control signal generation unit 130 determines that the control amount acquisition unit 120 has acquired the discharge power value.

  When it is determined that the control amount acquisition unit 120 has acquired the discharge power value (YES in S110), the control signal generation unit 130 generates a discharge control signal (S112). Here, the discharge control signal is a signal for causing the discharge devices (discharge devices 1 to m included in the discharge group 210) indicated by the discharge device identification information to discharge the power of the discharge power value.

  Specifically, the control signal generation unit 130 generates a ratio of the discharge power value with respect to the discharge group rated total amount as a discharge control signal in correspondence with the discharge period in which the control amount acquisition unit 120 acquires the discharge power value. To do. For example, when the control amount acquisition unit 120 acquires the discharge power value “A” illustrated in FIG. 10, the control signal generation unit 130 corresponds to the discharge period of “A” and the discharge group rated total amount “ The ratio of the discharge power value of “A” to “1000.0 MW” is generated as a discharge control signal.

  Note that the control signal generation unit 130 may generate the power value to be discharged by each discharge device as the discharge control signal for each discharge device, for example, instead of the above method.

  Then, the control signal transmission unit 140 transmits the discharge control signal to the discharge device (S114). Specifically, the control signal transmission unit 140 transmits a discharge control signal to all the discharge devices so that the power of the discharge power value is discharged to the power system 320 during the discharge period.

  FIG. 11 is a diagram illustrating that control signal transmission unit 140 of power storage device control apparatus 100 according to Embodiment 1 issues a discharge command or a charge command.

  As shown in the figure, the control signal transmission unit 140 of the power storage device control device 100 sends a discharge control signal to all the discharge devices 1 to m included in the discharge group 210 as a discharge command via the communication network 310. Send.

  For example, the control signal transmission unit 140 transmits a discharge control signal to the discharge devices 1 to m during a discharge period such as “A”, “B”, or “E”.

  Then, the discharge devices 1 to m that have received the discharge control signal perform the discharge so that the sum of the electric power discharged from the discharge devices 1 to m becomes the discharge power value, so that the power system 320 has the discharge power value. Supply power. Specifically, each of the discharge devices 1 to m discharges electric power having a value obtained by multiplying the rated output of the own device by the ratio indicated by the received discharge control signal.

  When the discharge control signal indicates the discharge power value for each discharge device, each of the discharge devices 1 to m discharges the power of the discharge power value indicated by the received discharge control signal.

  Returning to FIG. 7, when the control signal generation unit 130 determines that the control amount acquisition unit 120 has not acquired the discharge power value (NO in S110), the control amount acquisition unit 120 sets the charge power value as the control amount. It is determined whether or not it has been acquired (S116). For example, in the case of “C” and “D” illustrated in FIG. 10, the control signal generation unit 130 determines that the control amount acquisition unit 120 has acquired the charging power value.

  When it is determined that the control amount acquisition unit 120 has acquired the charging power value (YES in S116), the control signal generation unit 130 generates a charging control signal (S118). Here, the charging control signal is a signal for charging the charging device (the charging devices 1 to n included in the charging group 220) indicated by the charging device identification information with the power of the charging power value.

  Specifically, the control signal generation unit 130 generates, as a charge control signal, a ratio of the charging power value to the charging group rated total amount in association with a charging period in which the control amount acquisition unit 120 acquires the charging power value. To do. For example, when the control amount acquisition unit 120 acquires the charging power value “C” illustrated in FIG. 10, the control signal generation unit 130 corresponds to the charging period of “C” and the charging group rated total amount “ The ratio of the charging power value of “C” to “800.0 MW” is generated as the charging control signal.

  Note that the control signal generation unit 130 may generate, for example, for each charging device, a power value to be charged by each charging device as a charging control signal for each charging device.

  Then, the control signal transmission unit 140 transmits the charge control signal to the charging device (S120). Specifically, the control signal transmission unit 140 transmits a charge control signal to all the charging devices so as to charge the power of the charging power value from the power system 320 during the charging period.

  That is, as illustrated in FIG. 11, the control signal transmission unit 140 of the power storage device control device 100 controls the charging to all the charging devices 1 to n included in the charging group 220 as a charging command via the communication network 310. Send a signal.

  For example, the control signal transmission unit 140 transmits a charging control signal to the charging devices 1 to n during a charging period such as “C” or “D”.

  Next, as illustrated in FIG. 8, the control signal acquisition unit 252 of the power storage device included in the power storage device 200 acquires the discharge control signal or the charge control signal transmitted by the control signal transmission unit 140 (S204).

  Then, the charge / discharge signal generation unit 253 generates a charge / discharge signal indicating the discharge power value to be discharged by the storage battery 260 or the charge power value to be charged according to the discharge control signal or the charge control signal acquired by the control signal acquisition unit 252 ( S206).

  Then, the charge / discharge signal transmission unit 254 transmits the charge / discharge signal generated by the charge / discharge signal generation unit 253 to the storage battery 260 (S208). Thereby, the storage battery 260 is charged / discharged with the discharge power value or the charge power value indicated by the charge / discharge signal.

  Next, the switching unit 255 determines whether it is necessary to switch the affiliation information of the power storage device (S210). For example, when the storage battery 260 is discharged to a unique discharge amount, the switching unit 255 determines that the affiliation information of the power storage device needs to be switched from the discharge device identification information to the charging device identification information, and the storage battery 260 is unique. It is determined that it is necessary to switch the affiliation information of the power storage device from the charging device identification information to the discharging device identification information.

  When switching unit 255 determines that it is necessary to switch the belonging information of the power storage device (YES in S210), switching unit 255 switches the belonging information of the power storage device (S212). When switching unit 255 determines that there is no need to switch the affiliation information of the power storage device (NO in S210), the process ends without switching the affiliation information of the power storage device.

  In this way, the charging devices 1 to n that have received the charging control signal shown in FIG. 11 perform charging so that the total power charged in the charging devices 1 to n becomes a charging power value. The power of the charging power value is received from the power system 320. Specifically, each of the charging devices 1 to n is charged with electric power having a value obtained by multiplying the rated output of the own device by the ratio indicated by the received charging control signal.

  When the charging control signal indicates the charging power value for each charging device, each of the charging devices 1 to n charges the charging power value indicated by the received charging control signal.

  As described above, the above processing (S104 to S120 and S202 to S212) is repeatedly performed in a predetermined cycle during the control period of the power storage device control apparatus 100 (loop 1: S102 to S122).

  Note that, during the control period of the power storage device control device 100, for example, when the discharge device is discharged to a unique discharge amount, the discharge device identification information is switched to the charge device identification information, and the charge device has a unique charge amount. Is charged, the charging device identification information is switched to the discharging device identification information (S212).

  For this reason, during the control period, the power storage information acquisition unit 110 performs charging device identification information as identification information for identifying the first power storage device when the first power storage device that is the discharge device is discharged to a specific discharge amount. And when the second power storage device as the charging device is charged to a specific charge amount, the discharge device identification information is acquired as identification information for identifying the second power storage device (S104).

  Thus, by repeating the above processing (S104 to S120), the configurations of the discharging devices included in the discharging group 210 and the charging devices included in the charging group 220 change. In addition, the configuration is changed by shifting from the discharge group 210 or the charging group 220 to the non-participating group 230, or from the non-participating group 230 to the discharging group 210 or the charging group 220.

  In the first embodiment, the specific discharge amount and charge amount of the power storage device, which group of the discharge group 210, the charge group 220, and the non-participating group 230 the power storage device belongs to, and which group is switched to, etc. This is set for each individual power storage device.

  Next, another example of the process in which the switching unit 255 of the power storage device 200 switches the belonging information will be described. Specifically, the switching unit 255 switches affiliation information for a charging device such as an electric vehicle so as not to impair the original convenience of the charging device.

  FIG. 12 is a diagram for explaining processing performed by the switching unit 255 according to the first embodiment. Specifically, (a) of the figure is a graph showing the SOC value with respect to the elapsed time when the charging device is normally charged. Moreover, (b) of the same figure is the graph which showed the value of SOC with respect to the elapsed time at the time of charging a charging device by the electrical storage apparatus control apparatus 100. FIG.

  As shown in (a) of the figure, in normal charging, the charging device is charged up to a specific charge amount (charge amount when SOC shown in the figure is x%) in a period T1 until time t1. Done. Note that the charging device only needs to be charged by time t2, but since charging has been completed at time t1, the charging device is not charged during a period T2 from time t1 to time t2.

  On the other hand, as shown in (b) of the figure, the power storage device control device 100 causes the charging device to charge in accordance with the charge control signal during the period T3 until time t3. Here, it is assumed that the charging device needs to be charged up to a specific charge amount indicated by SOC of x% by time t2. In the charging according to the charging control signal, the charging device is not charged to the specific charging amount by time t2.

  For this reason, the switching unit 255 converts the belonging information into identification information for identifying the non-participating device when it is predicted that the storage battery 260 will not be charged to a specific charge amount within a predetermined period by charging according to the charging control signal. Switch.

  Then, the power storage information transmission unit 251 transmits the affiliation information switched by the switching unit 255 to the power storage device control apparatus 100. Here, the storage information transmission unit 251 transmits the switched affiliation information at a timing at which information is transmitted to the storage device control apparatus 100 at a predetermined cycle. Note that the power storage information transmission unit 251 may transmit the switched affiliation information to the power storage device control apparatus 100 when the affiliation information is switched, even if the cycle is not a predetermined cycle.

  Further, the charge / discharge signal generation unit 253 generates a charge / discharge signal that charges the storage battery 260 to a specific charge amount within a predetermined period, and the charge / discharge signal transmission unit 254 transmits the charge / discharge signal to the storage battery 260. .

  Here, the charging in the period T4 from the time t3 to the time t2 is charging performed at the same speed as the charging in the period T1 in FIG. That is, the charging device is normally charged in a period T4 from time t3 to time t2.

  Next, an effect obtained when the power storage device control apparatus 100 performs supply and demand control of the power system 320 will be described.

  FIG. 13 is a diagram for explaining an effect obtained by the power storage device control apparatus 100 according to Embodiment 1 of the present invention performing supply and demand control of the power system 320.

  Specifically, (a) of the figure shows a change in the SOC of the power storage device by the conventional supply and demand control. Moreover, (b) of the same figure is a figure which shows the change of SOC of the discharge device by the supply-and-demand control of the electrical storage apparatus control apparatus 100. FIG. Moreover, (c) of the same figure is a figure which shows the change of SOC of the charging device by the supply-and-demand control of the electrical storage apparatus control apparatus 100. FIG.

  As shown in (a) of the figure, in the conventional supply and demand control, for example, when charging and discharging of a power storage device is repeatedly performed in a short time according to a power value graph indicated by “P1”, the SOC of the power storage device is Repeat the increase / decrease at shallow depth of discharge.

  On the other hand, as shown in (b) of the figure, in power storage device control device 100 according to the present embodiment, discharge of the discharge device is performed according to the power value graph indicated by “P2”, and the discharge device The SOC decreases until the discharge of the specific discharge amount is completed (until the optimum discharge depth is reached). Further, as shown in (c) of the figure, in the power storage device control device 100, the charging device is charged according to the graph of the electric power value indicated by “P3”, and the SOC of the charging device indicates the specific charge amount. Rise until charging is complete (until optimum charging depth).

  Thus, in the conventional supply and demand control, since the power storage device repeats charging and discharging at a shallow depth of discharge, it is not always possible to use the power storage device with a long life. However, in the power storage device control apparatus 100 according to the present embodiment, the power storage device can perform charging / discharging at an optimal discharge depth and charging depth, and the number of times of repeating charge / discharge can be reduced. The life of the power storage device can be extended.

  As described above, according to power storage device control apparatus 100 according to Embodiment 1 of the present invention, the discharge control signal is supplied to the discharge device so that the discharge device discharges the electric power that power system 320 needs to receive. The charging control signal is transmitted to the charging device so that the charging device charges the power that the power system 320 needs to supply from the power system 320. For this reason, for example, utilizing a secondary battery installed in a consumer as a power storage device, or using a storage battery of an electric vehicle as a charging device, without impairing the convenience of the original use. can do. Thereby, the power supply / demand control of the electric power system 320 can be performed without requiring a power storage device dedicated to the supply / demand control. In addition, since the power storage device charges or discharges up to a specific charge amount or a specific discharge amount, an optimum charge depth is selected by selecting an optimum specific charge amount and specific discharge amount in consideration of the lifetime. In addition, since charging / discharging at the discharge depth can be performed and the number of times charging / discharging is repeated can be reduced, the life of the power storage device can be extended. Therefore, when power supply / demand control of the power system 320 is performed using a power storage device, a power storage device dedicated to supply / demand control is not required, and the life of the power storage device can be extended.

  Further, the ratio of the discharge power value to the total value of the rated output of the discharge device is generated as a discharge control signal, and the discharge control signal is transmitted to all the discharge devices. Moreover, the ratio of the charging power value with respect to the total value of the rated outputs of the charging devices is generated as a charging control signal, and the charging control signal is transmitted to all the charging devices. That is, by generating a ratio to the rated output as a control signal, it is not necessary to individually generate a control signal corresponding to each discharge device or each charging device, and the control signal is uniformly applied to each discharging device or each charging device. Can be sent. For this reason, it is possible to easily generate and transmit a control signal and perform supply and demand control of the power system 320.

  In addition, as a system power adjustment value for frequency control of the power system 320, a discharge power value or a charge power value is acquired at a predetermined cycle, and the power of the discharge power value is supplied to the power system 320 during the period when the discharge power value is acquired. The control signal is transmitted to the discharging device so as to discharge the charging power value, and the control signal is transmitted to the charging device so as to charge the power of the charging power value from the power system 320 during the period when the charging power value is acquired. As a result, it is possible to adjust the grid power for frequency control of the power grid 320 using the power storage device, so that the ancesity is charged during the period when the power storage device is charging or during the period when the power storage device is discharged. Rally service can be provided. For example, when using a storage battery of an electric vehicle, it is possible to perform control such that an ancillary service is provided only during a charging period.

  Further, when the power storage device is discharged to a specific discharge amount, the charging device identification information is acquired as identification information for identifying the power storage device, and when the power storage device is charged to the specific charge amount, the power storage device The discharge device identification information is acquired as the identification information for identifying. In other words, the power storage device has a function of switching to charge when discharging is completed and switching to discharging when charging is completed. Thereby, the total power value discharged from the power storage device or the total power value charged to the power storage device does not change drastically, and supply and demand control of the power system 320 can be performed stably.

  Further, according to power storage device 200 according to Embodiment 1 of the present invention, when a discharge device, a charging device, or a non-participating device is switched to another device, identification information of the switching destination device is transmitted to power storage device control device 100. Send. For example, when the storage battery 260 is discharged to a specific discharge amount, the identification information is switched from the discharge device to the identification information for identifying the charging device, and when the storage battery 260 is charged to the specific charge amount, the identification information is charged. Switching from the device to the identification information for identifying the discharge device, the identification information is transmitted to the power storage device control device 100. The belonging information is transmitted to power storage device control device 100 at a predetermined cycle. Thereby, even if the electrical storage apparatus control apparatus 100 does not have the function to switch charging / discharging, charging / discharging of an electrical storage apparatus can be switched.

  In addition, when it is predicted that the storage battery 260 will not be charged to a specific charge amount within a predetermined period in the charging according to the charging control signal from the power storage device control device 100, the identification information identifies the non-participating device. The identification information is transmitted to the power storage device control device 100. The belonging information is transmitted to power storage device control device 100 at a predetermined cycle. In addition, a charge / discharge signal for charging the storage battery 260 to a specific charge amount within a predetermined period is transmitted to the storage battery 260. For example, when a storage battery of an electric vehicle is charged according to a charge control signal, the charge according to the charge control signal may not be completed at the time that the user wants to use. In this case, the charging of the storage battery of the electric vehicle according to the charging control signal is stopped, and the battery is rapidly charged so that the charging is completed at the time that the user wants to use. As a result, a charging device such as a storage battery of an electric vehicle can be charged to a specific charge amount within a predetermined period, so that the charging device can be used for power supply and demand control without impairing the convenience of the original use. Can be used.

  The discharging device can be switched to a non-participating device when discharging is completed, and the charging device can be switched to a non-participating device when charging is completed. This switching may be performed automatically or according to a user instruction. For example, when the power storage device is a storage battery for an electric vehicle and the user is planning to use the electric vehicle in the near future, by setting the transition to the non-participating device after the charging is completed, It can be used without impairing the original convenience.

(Embodiment 2)
Next, a second embodiment of the present invention will be described. In Embodiment 1 described above, the switching unit 255 of the power storage device 200 has a function of switching to charge when discharging is completed and switching to discharging when charging is completed. . However, in the second embodiment, power storage device control device 100 switches between discharging and charging of the power storage device instead of switching unit 255.

  Here, the configuration of power storage device control system 10 in the second embodiment is similar to the configuration of power storage device control system 10 in the first embodiment shown in FIGS. Some of the functions of the constituent elements are different. For this reason, below, about the function which the said component has, the description different from the description in Embodiment 1 is demonstrated.

  The power storage information acquisition unit 110 acquires charge / discharge depth information indicating a charge depth and a discharge depth at which the life of each power storage device included in the power storage device 200 is longest.

  The control signal generation unit 130 generates a charge switching signal for switching the power storage device from the discharge device to the charging device when the power storage device is discharged to a specific discharge amount, and the power storage device is charged to a specific charge amount. In this case, a discharge switching signal for switching the power storage device from the charging device to the discharging device is generated.

  The control signal transmission unit 140 transmits the charge switching signal to the discharging device when the charging switching signal is generated, and transmits the discharging switching signal to the charging device when the discharge switching signal is generated.

  Next, processing performed by power storage device control apparatus 100 according to the second embodiment will be described. Here, in the second embodiment, the same processing as that of the first embodiment shown in FIG. 7 is performed, but the processing for acquiring the affiliation information (S104 in FIG. 7) by the power storage information acquisition unit 110 is different. Now, this process will be described in detail.

  FIG. 14 is a flowchart illustrating an example of the operation of the power storage device control device 100 according to the second embodiment. This figure corresponds to the process (S104 in FIG. 7) in which the power storage information acquisition unit 110 in FIG. 7 acquires affiliation information.

  First, the power storage information acquisition unit 110 acquires charge / discharge depth information from each power storage device included in the power storage device 200 via the communication network 310 (S302).

  Here, the charge / discharge depth information is information indicating the charge depth and the discharge depth when the value obtained by multiplying the charge / discharge amount obtained from the charge depth and the discharge depth and the cycle life is maximized. That is, the charge / discharge depth information is information indicating a charge depth and a discharge depth at which the life of the power storage device is maximized. For this reason, the charge / discharge depth information differs depending on the power storage device, and each power storage device has unique charge / discharge depth information.

  That is, the power storage information acquisition unit 110 sets the charge depth and discharge depth of the power storage device when the value obtained by multiplying the charge / discharge amount obtained from the charge depth and discharge depth by the cycle life is maximum, and the life of the power storage device is the longest. The charge / discharge depth information is acquired as the charge depth and the discharge depth. Here, the charge depth and the discharge depth are set by the user. Therefore, the power storage information acquisition unit 110 acquires charge / discharge depth information set by the user.

  Returning to FIG. 14, next, the control signal generation unit 130 determines whether or not there is a power storage device that has been discharged to a specific discharge amount and completed discharging (S <b> 304).

  When it is determined that there is a power storage device that has completed discharging (YES in S304), control signal generation unit 130 generates a charge switching signal that switches the first power storage device that is the power storage device that has completed discharging from the discharging device to the charging device. (S306). Specifically, control signal generation unit 130 generates a charge switching signal when the first power storage device is discharged to the discharge depth indicated by the charge / discharge depth information.

  Then, the control signal transmission unit 140 transmits the charge switching signal to the first power storage device via the communication network 310 (S308). Thereby, the first power storage device is switched to the charging device by receiving the charge switching signal.

  Then, the control signal generation unit 130 determines whether or not there is a power storage device that has been charged to a specific charge amount and has been charged (S310). In addition, even when it is determined that there is no power storage device that has completed discharging (NO in S304), control signal generation unit 130 determines whether there is a power storage device that has completed charging (S310).

  When it is determined that there is a charging device that has completed charging (YES in S310), control signal generation unit 130 generates a discharge switching signal that switches the second power storage device, which is the power storage device that has completed charging, from the charging device to the discharging device. (S312). Specifically, control signal generation unit 130 generates a discharge switching signal when the second power storage device is charged to the charging depth indicated by the charge / discharge depth information.

  Then, the control signal transmission unit 140 transmits the discharge switching signal to the second power storage device via the communication network 310 (S314). Thereby, the second power storage device is switched to the discharge device by receiving the discharge switching signal.

  And the electrical storage information acquisition part 110 acquires affiliation information (S316). Specifically, the power storage information acquisition unit 110 acquires the charging device identification information as identification information for identifying the first power storage device switched to the charging device by receiving the charge switching signal, and receives the discharge switching signal. Thus, the discharge device identification information is acquired as identification information for identifying the second power storage device switched to the discharge device.

  As described above, the control signal generation unit 130 generates a charge switching signal for switching the discharging device to the charging device when the discharging device is switched to the charging device, and the charging device is switched when the charging device is switched to the discharging device. A discharge switching signal for switching to the discharge device is generated. The control signal generation unit 130 generates a charge switching signal for switching the non-participating device to the charging device when the non-participating device is switched to the charging device. When the non-participating device is switched to the discharging device, the control signal generating unit 130 discharges the non-participating device to the discharging device. A discharge switching signal for switching to a device may be generated, and a non-participation switching signal for switching the discharging device or the charging device to the non-participating device may be generated when the discharging device or the charging device switches to the non-participating device.

  In this case, the control signal transmission unit 140 transmits the charge switching signal to the switching device or the non-participating device that is switched when the charge switching signal is generated, and the discharge switching signal is generated when the discharge switching signal is generated. When the non-participation switching signal is generated by transmitting to the charging device or non-participating device to be switched, the non-participation switching signal is transmitted to the discharging device or charging device to be switched.

  And the electrical storage information acquisition part 110 acquires charging device identification information as identification information which identifies the electrical storage apparatus switched to the charging device by receiving a charge switching signal, and receives it in a discharging device by receiving a discharge switching signal. The discharge device identification information is acquired as identification information for identifying the switched power storage device, and the nonparticipating device identification information is acquired as identification information for identifying the power storage device switched to the nonparticipating device by receiving the nonparticipation switching signal.

  As described above, power storage device control apparatus 100 according to Embodiment 2 of the present invention generates a switching signal for switching charge / discharge of a power storage device and transmits the switching signal to the power storage device to switch charge / discharge of the power storage device. Then, charging device identification information, discharging device identification information, or nonparticipating device identification information is acquired. Thereby, even if the power storage device does not have a function of switching between charging and discharging, charging and discharging of the power storage device can be switched. Thereby, the total power value discharged from the power storage device or the total power value charged to the power storage device does not change drastically, and supply and demand control of the power system 320 can be performed stably.

  In addition, charge / discharge depth information is obtained as the charge depth and discharge depth when the value obtained by multiplying the charge / discharge amount obtained from the charge depth and discharge depth by the cycle life is maximum, and the charge depth and discharge depth at which the life is the longest. get. Accordingly, the depth of charge and the depth of discharge can be easily determined, and the life of the power storage device can be extended.

(Embodiment 3)
Next, a third embodiment of the present invention will be described. In the first embodiment, the switching unit 255 of the power storage device 200 has a function of switching affiliation information for a charging device such as an electric vehicle so as not to impair the original convenience of the charging device. . However, in the third embodiment, instead of switching unit 255, power storage device control device 100 issues a charging command for a charging device such as an electric vehicle so as not to impair the original convenience of the charging device.

  Here, the configuration of power storage device control system 10 in the third embodiment is the same as the configuration of power storage device control system 10 in the first embodiment shown in FIGS. Some of the functions of the constituent elements are different. For this reason, below, about the function which the said component has, the description different from the description in Embodiment 1 is demonstrated.

  The control signal generation unit 130 charges the third power storage device when it is predicted that the charging according to the charge control signal will not charge the third power storage device as a charging device to a specific charge amount within a predetermined period. A non-participation switching signal for switching to a non-participating device that is not charged according to the control signal is generated. In addition, the control signal generation unit 130 generates a quick charge control signal that charges the third power storage device to a specific charge amount within a predetermined period.

  The control signal transmission unit 140 transmits the non-participation switching signal and the quick charge control signal to the third power storage device when the non-participation switching signal and the quick charge control signal are generated.

  The power storage information acquisition unit 110 acquires non-participating device identification information as identification information for identifying the third power storage device switched to the non-participating device by receiving the non-participation switching signal.

  Next, processing performed by power storage device control apparatus 100 according to the third embodiment will be described.

  First, as illustrated in FIG. 12, as illustrated in FIG. 12B, the power storage device control device 100 causes the charging device to charge in accordance with the charge control signal during a period T <b> 3 until time t <b> 3. Here, it is assumed that the charging device needs to be charged up to a specific charge amount indicated by SOC of x% by time t2. In the charging according to the charging control signal, the charging device is not charged to the specific charging amount by time t2.

  For this reason, the control signal generation unit 130 of the power storage device control device 100 predicts that the charging device will not be charged up to the specific charge amount by time t2 in the charging according to the charging control signal, and controls the charging of the charging device. A non-participation switching signal for switching to a non-participating device that is not charged according to the signal is generated.

  Further, the control signal generation unit 130 generates a quick charge control signal that charges the charging device to a specific charge amount by time t2. Here, the charging in the period T4 from the time t3 to the time t2 is charging performed at the same speed as the charging in the period T1 in FIG. That is, the charging device is normally charged in a period T4 from time t3 to time t2.

  Then, the control signal transmission unit 140 transmits a non-participation switching signal and a quick charge control signal to the charging device. Thereby, the said charging device will belong to the non-participation group 230 by receiving a non-participation switching signal and switching to a non-participating device.

  And the electrical storage information acquisition part 110 acquires nonparticipating apparatus identification information as identification information which identifies the charging device switched to the nonparticipating apparatus.

  As described above, power storage device control device 100 according to Embodiment 3 of the present invention charges a charging device when it is predicted that predetermined charging will not be performed by charging according to the charging control signal. A non-participation switching signal for switching to a non-participating device that is not charged according to the control signal is generated, and a quick charge control signal for causing the charging device to perform predetermined charging is generated, and the signal is transmitted to the charging device, Non-participating device identification information for identifying the charging device is acquired. For example, when a storage battery of an electric vehicle is charged according to a charge control signal, the charge according to the charge control signal may not be completed at the time that the user wants to use. In this case, the charging of the storage battery of the electric vehicle according to the charging control signal is stopped, and the battery is rapidly charged so that the charging is completed at the time that the user wants to use. As a result, a charging device such as a storage battery of an electric vehicle can be charged up to a specific charge amount within a predetermined period, so that the charging device can be controlled for supply and demand of the power system 320 without impairing the convenience of the original use. It can be used for.

(Embodiment 4)
Next, a fourth embodiment of the present invention will be described. In the fourth embodiment, power storage device control apparatus 100 acquires information that can be used for examination of control sharing between the conventional generator and the power storage device.

  Here, the configuration of power storage device control system 10 in the present fourth embodiment is the same as the configuration of power storage device control system 10 in the first embodiment shown in FIGS. Some of the functions of the constituent elements are different. For this reason, below, about the function which the said component has, the description different from the description in Embodiment 1 is demonstrated.

  The power storage information acquisition unit 110 acquires dischargeable power amount information indicating the total amount of power that can be discharged by the discharge device and chargeable power amount information indicating the total value of the amount of power that can be charged by the charging device. In addition, the storage information acquisition unit 110 may indicate whether or not the discharge device is switched to the charging device after being discharged to the specific discharge amount, or whether the charging device is switched to the discharge device after being charged to the specific charge amount. Transition information, which is information indicating whether or not, is acquired.

  The control amount acquisition unit 120 acquires a discharge power value or a charge power value using the dischargeable power amount information, the chargeable power amount information, and the transition information acquired by the power storage information acquisition unit 110. Specifically, the control amount acquisition unit 120 determines the control sharing between the conventional generator and the power storage device using the information acquired by the power storage information acquisition unit 110, the system operation cost, and the like, and responds to the determined control sharing. Obtain the discharged power value or charging power value.

  Next, processing performed by the power storage device control device 100 according to the fourth embodiment will be described.

  FIG. 15 is a diagram illustrating a process performed by power storage device control apparatus 100 according to the fourth embodiment.

  As shown in the figure, the power storage information acquisition unit 110 acquires the rated capacity and the SOC from each of the discharge devices 1 to m included in the discharge group 210 via the communication network 310.

  Here, the power storage data table 257 stored in the storage unit 256 of the power storage device includes information on the rated capacity. And the electrical storage information transmission part 251 transmits the said rated capacity and SOC to the electrical storage apparatus control apparatus 100, and the electrical storage information acquisition part 110 acquires a rated capacity and SOC.

  For example, the power storage information acquisition unit 110 acquires “2.0 kWh” as the rated capacity and “90% (10 to 95%)” as the SOC from the discharge device 1. Here, “90%” of “90% (10 to 95%)” of the SOC indicates that the current SOC value is 90%. “(10 to 95%)” indicates the upper and lower limit values of the SOC. Specifically, the SOC can be charged to 95% (the charging depth is set to SOC 95%), and the SOC is 10 % Discharge is possible (the depth of discharge is set to SOC 10%).

  And the electrical storage information acquisition part 110 calculates the electric energy which each discharge device can discharge from the acquired rated capacity and SOC. Specifically, the power storage information acquisition unit 110 calculates the amount of power that can be discharged by each discharge device by multiplying the rated capacity by the dischargeable ratio calculated from the SOC. For example, as the amount of power that can be discharged by the discharge device 1, the power storage information acquisition unit 110 calculates 2.0 kWh × (90% −10%) = 1.6 kWh.

  And the electrical storage information acquisition part 110 integrates the calculated electric energy which each discharge device can discharge about all the discharge devices contained in the discharge group 210, and is the total value of the electric energy which each discharge device can discharge Is calculated, and dischargeable energy information indicating the total value is obtained. In addition, each discharge device calculates the electric energy which can be discharged, and the electrical storage information acquisition part 110 calculates and acquires the electric energy which can be discharged by acquiring the electric energy which can be discharged from each discharge device. You may decide.

  Similarly, for the charging device, the power storage information acquisition unit 110 acquires the rated capacity and the SOC from each of the charging devices 1 to n included in the charging group 220 via the communication network 310. For example, the power storage information acquisition unit 110 acquires “2.0 kWh” as the rated capacity and “20% (10 to 90%)” as the SOC from the charging device 1.

  And the electrical storage information acquisition part 110 calculates the electric energy which each charging device can charge from the acquired rated capacity and SOC. Specifically, the power storage information acquisition unit 110 calculates the amount of power that can be charged by each charging device by multiplying the rated capacity by the chargeable ratio calculated from the SOC. For example, the power storage information acquisition unit 110 calculates 2.0 kWh × (90% −20%) = 1.4 kWh as the amount of power that can be discharged by the charging device 1.

  And the electrical storage information acquisition part 110 totals the electric energy which each charging device can charge by integrating | accumulating the electric energy which each charging device calculated about all the charging devices contained in the charging group 220. Is calculated, and rechargeable energy information indicating the total value is obtained. In addition, each charging device calculates the amount of power that can be charged, and the storage information acquisition unit 110 calculates and acquires the amount of chargeable power information by acquiring the amount of power that can be charged from each charging device. You may decide.

  In addition, the storage information acquisition unit 110 may indicate whether or not the discharge device is switched to the charging device after being discharged to the specific discharge amount, or whether the charging device is switched to the discharge device after being charged to the specific charge amount. Transition information, which is information indicating whether or not, is acquired.

  Specifically, the power storage information acquisition unit 110 acquires transition information from each of the discharge devices 1 to m included in the discharge group 210 via the communication network 310. For example, the power storage information acquisition unit 110 acquires “charge group” as transition information from the discharge device 1 and acquires “non-participation group” as transition information from the discharge device 2. That is, the discharging device 1 shifts to belong to the charging group 220 after the completion of discharging, and the discharging device 2 shifts to belong to the non-participating group 230 after the discharging is completed.

  Similarly for the charging device, the storage information acquisition unit 110 acquires transition information from each of the charging devices 1 to n included in the charging group 220 via the communication network 310. The power storage information acquisition unit 110 also acquires transition information from the nonparticipating devices 1 to p included in the nonparticipating group 230.

  For example, when the discharge device completes the discharge and shifts from the discharge group 210 to belong to another group, the total output of the discharge devices included in the discharge group 210 decreases. When the charging device completes charging and shifts from the charging group 220 to belong to the discharging group 210, or when the non-participating device shifts from the non-participating group 230 to belong to the discharging group 210, the discharging devices included in the discharging group 210 The total output of increases. The same applies to the charging device.

  For this reason, using the transition information acquired by the power storage information acquisition unit 110, not only the total value of the electric energy of the future discharge device or the charging device but also the total output of the future discharge device or the total output of the charging device is predicted. be able to.

  Note that the transition information of the non-participating device also includes information regarding the time of transition. For example, when the non-participating device is a storage battery for an electric vehicle, when the electric vehicle finishes traveling and is connected to a home HEMS (Home Energy Management System) or the like, the HEMS detects the electric vehicle and detects a certain time ( For example, the transition information that transition to the charging group 220 after 1 minute) is automatically transmitted to the storage information acquisition unit 110. In addition, the power storage device is allowed to participate in the non-participating group 230 because the user wants to occupy and use home appliances, etc., but the user is scheduled to go out, and after that time, the charging group 220 or the discharging group When the user can participate in 210, the user includes the scheduled going-out time in the transition information and transmits the transition information to the power storage information acquisition unit 110. Thereby, the electrical storage information acquisition part 110 acquires the transition information also including the information regarding time from a non-participation apparatus.

  Then, the control amount acquisition unit 120 acquires a discharge power value or a charge power value using the dischargeable power amount information, the chargeable power amount information, and the transition information acquired by the power storage information acquisition unit 110.

  FIG. 16 is a diagram illustrating the discharge power value or the charge power value acquired by the control amount acquisition unit 120 according to the fourth embodiment.

  Specifically, (a) of the figure shows a power value that the power system 320 needs to receive or a power value that the power system 320 needs to supply. Moreover, (b) of the figure is a figure which shows the discharge power value or charge power value which the control amount acquisition part 120 acquires.

  As shown to (a) of the figure, the electric power system 320 supplies the electric power of "A", "B", and "E" from the conventional generator or the discharge device in order to maintain the supply and demand balance of the system. The power of “C” and “D” needs to be supplied to the conventional generator or charging device.

  Here, the conventional generator is, for example, a thermal power generation facility or a hydroelectric generation facility (including a pumped-storage power generation facility) owned by an electric power company. That is, for example, a thermal power generation facility and a hydroelectric power generation facility have a function of adjusting output and controlling supply and demand of an electric power system based on a command from a conventional EMS.

  For this reason, first, the control amount acquisition unit 120 knows the available time of the power storage device from the dischargeable power amount information, the chargeable power amount information, and the transition information acquired by the power storage information acquisition unit 110. Control sharing between the generator and the power storage device is determined.

  Note that the control amount acquisition unit 120 may determine the control sharing using the system operation cost and the like. That is, the control amount acquisition unit 120 pays for the power storage device to perform supply and demand control (the price for providing the ancillary service) and the cost for keeping a conventional generator such as a thermal power generation facility as standby power And the control sharing that is the cheapest may be determined. Here, any method may be used as a method for calculating the consideration and cost.

  Then, the control amount acquisition unit 120 acquires a discharge power value or a charge power value corresponding to the determined control sharing. For example, as shown in (b) of the figure, the control amount acquisition unit 120 acquires “A1”, “B1”, and “E1” as discharge power values, and sets “C1” and “D1” as charge power values. Get as. “A2”, “B2”, and “E2” are power values that increase the output of the conventional generator, and “C2” and “D2” are power values that decrease the output of the conventional generator.

  As described above, according to power storage device control apparatus 100 according to Embodiment 4 of the present invention, dischargeable power amount information that can be discharged by the discharge device, chargeable power amount information that can be charged by the charging device, and discharge By acquiring the transition information indicating the switching destination of the device or the charging device, the discharge power value or the charging power value is acquired using the information. That is, the charge / discharge amount and the charge / discharge time that the power storage device can use for supply / demand control of the power system 320 can be grasped from the dischargeable power amount information, the chargeable power amount information, and the transition information. For this reason, it is possible to determine control sharing between the conventional generator and the power storage device using the information and the like. As a result, a discharge power value or a charge power value corresponding to the determined control sharing can be acquired, and supply and demand control of the power system 320 can be performed.

  The power storage device control device 100 according to the present invention has been described using the above embodiment, but the present invention is not limited to this.

  That is, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. Moreover, you may combine each component in the said several embodiment arbitrarily in the range which does not deviate from the meaning of invention.

  For example, in the present embodiment, the discharge device is switched to a charging device or a non-participating device after being discharged to a specific amount of discharge, and the charging device is charged to a specific amount of charge and then is discharged to the discharging device or the non-participating device. It was decided to switch. However, in an emergency, for example, according to a command from the power storage device control device 100, the discharge device can be switched to the charge device even before being discharged to the specific discharge amount. Even before being charged up to the charge amount, it can be switched to the discharging device, and the non-participating device can be switched to the charging device or the discharging device. In this case, the power storage device control device 100 can store the control amount, the number of times of control, and the like in the storage unit 150 to be used for calculation of the consideration. That is, a consumer who has a power storage device can obtain a price commensurate with emergency control. Further, the power storage device may have a lock function that does not follow the emergency command.

  In the present embodiment, the charging device to which the charging control signal is transmitted is a power storage device such as a secondary battery or an electric vehicle. However, the charging device to which the charge control signal is transmitted may be a load device that consumes power. In other words, the ancillary service can be provided by the load device consuming power according to the charge control signal. In addition, the said load apparatus is heat storage apparatuses, such as air conditioning apparatus, such as a heat pump, and an ice thermal storage apparatus.

  The present invention can be realized not only as such a power storage device control device or a power storage device, but also as a power storage device control system including the power storage device control device and a plurality of power storage devices. . Moreover, it can also be realized as a power storage device control method or a power storage method in which the processing performed by each processing unit included in such a power storage device control device or power storage device is a step. In addition, the power storage device control method or the characteristic processing included in the power storage method can be realized as a program that causes a computer to execute. Needless to say, such a program can be distributed via a recording medium such as a CD-ROM and a transmission medium such as the Internet. Further, it can be realized as an integrated circuit including a power storage device control device or a characteristic processing unit included in the power storage device.

  The power storage device control device according to the present invention can be applied to a supply and demand control device that performs power supply and demand control using the power storage device, and in particular, does not require a power storage device dedicated to supply and demand control, and extends the life of the power storage device. It can be applied to a supply and demand control device that can be used.

DESCRIPTION OF SYMBOLS 10 Power storage device control system 100 Power storage device control device 110 Power storage information acquisition part 120 Control amount acquisition part 130 Control signal generation part 140 Control signal transmission part 150 Storage part 151 Power storage information table 200 Power storage apparatus 201a-201g Secondary battery 202a-202e Automobile Storage battery 210 discharge group 220 charge group 230 non-participation group 250 power storage control unit 251 power storage information transmission unit 252 control signal acquisition unit 253 charge / discharge signal generation unit 254 charge / discharge signal transmission unit 255 switching unit 256 storage unit 257 power storage data table 260 storage battery 310 Communication network 320 Power system 321 Office building 322, 323 General household 324 Factory 400 Conventional EMS

Claims (15)

A power storage device control device that controls a plurality of power storage devices that repeat charging and discharging connected to a power system,
Discharge device identification information for identifying a discharge device that is a power storage device in a discharging process up to the specific discharge amount, among the plurality of power storage devices each charging to a specific charge amount or discharging to a specific discharge amount, and A power storage information acquisition unit that acquires charging device identification information for identifying a charging device that is a power storage device in a charging process up to a unique charge amount;
A control amount acquisition unit that acquires a discharge power value that is a power value that the power system needs to be supplied from the discharge device, or a charge power value that is a power value that the power system needs to supply to the charging device. When,
When the control amount acquisition unit acquires the discharge power value, the control amount acquisition unit generates a discharge control signal that causes the discharge device indicated by the discharge device identification information to discharge the power of the discharge power value. A control signal generation unit that generates a charge control signal that causes the charging device indicated by the charging device identification information to charge the power of the charging power value when the charging power value is acquired;
When the discharge control signal is generated, the discharge control signal is transmitted to the discharge device so as to discharge the power of the discharge power value to the power system, and when the charge control signal is generated, A power storage device control device comprising: a control signal transmission unit configured to transmit the charge control signal to the charging device so as to charge the power of the charging power value from the power system. The power storage information acquisition unit further includes a total value of rated outputs of one or more discharge devices indicated by the discharge device identification information, and a total value of rated outputs of one or more charging devices indicated by the charging device identification information, Get
The control signal generation unit generates a ratio of the discharge power value with respect to a total value of the rated output of the discharge device as the discharge control signal, and calculates a ratio of the charge power value with respect to the total value of the rated output of the charging device. Generated as a charge control signal,
The power storage device control device according to claim 1, wherein the control signal transmission unit transmits the discharge control signal to all of the discharge devices, and transmits the charge control signal to all of the charge devices. The control amount acquisition unit acquires the discharge power value or the charge power value at a predetermined period as an adjustment value of the system power for frequency control of the power system,
The control signal generation unit generates the discharge control signal in correspondence with a discharge period that is a period during which the control amount acquisition unit acquires the discharge power value, and the control amount acquisition unit acquires the charge power value. Generating the charge control signal in correspondence with a charge period that is a period,
The control signal transmission unit transmits the discharge control signal to the discharge device so as to discharge the power of the discharge power value to the power system during the discharge period, and the charge power from the power system during the charge period. The power storage device control device according to claim 1, wherein the charge control signal is transmitted to the charging device so as to charge power of a value. The power storage information acquisition unit acquires charging device identification information as identification information for identifying the first power storage device when the first power storage device as the discharge device is discharged to the specific discharge amount, and the charging The discharge device identification information is acquired as identification information for identifying the second power storage device when the second power storage device as a device is charged to the specific charge amount. Power storage device control device. The control signal generation unit further switches the discharging device or the non-participating device to the charging device when the discharging device or the non-participating device that is not charged / discharged according to the charging control signal is switched to the charging device. When a charge switching signal is generated and the charging device or the nonparticipating device is switched to the discharging device, a discharging switching signal is generated to switch the charging device or the nonparticipating device to the discharging device, and the discharging device or the charging device A non-participation switching signal for switching the discharging device or the charging device to the non-participating device when switching to the non-participating device,
The control signal transmission unit further transmits the charge switching signal to the discharging device or the non-participating device when the charge switching signal is generated, and when the discharge switching signal is generated, When the non-participation switching signal is generated when the discharge switching signal is switched to the charging device or the non-participating device, the non-participation switching signal is transmitted to the switching device or the charging device,
The power storage information acquisition unit acquires charging device identification information as identification information for identifying a power storage device switched to a charging device by receiving the charge switching signal, and receives the discharge switching signal to the discharging device. Discharging device identification information is acquired as identification information for identifying a switched power storage device, and non-participating device identification information is acquired as identification information for identifying a power storage device switched to a non-participating device by receiving the non-participation switching signal. Item 5. The power storage device control device according to any one of Items 1 to 4. The power storage information acquisition unit further acquires charge / discharge depth information indicating a charge depth and a discharge depth at which the life of the power storage device is longest,
The control signal generation unit generates the charge switching signal when the discharge device is discharged to the discharge depth indicated by the charge / discharge depth information, and the charge device indicates the charge depth indicated by the charge / discharge depth information. The power storage device control device according to claim 5, wherein the discharge switching signal is generated when the battery has been charged up to. The power storage information acquisition unit calculates the charge depth and the discharge depth of the power storage device when the value obtained by multiplying the charge / discharge amount obtained from the charge depth and the discharge depth by the cycle life that is the number of charge / discharge is maximum. The power storage device control device according to claim 6, wherein the charge / discharge depth information is acquired as a charge depth and a discharge depth at which the lifetime of the device is the longest. The control signal generation unit is further configured to charge the battery according to the charge control signal when the third power storage device that is the charging device is predicted not to be charged to the specific charge amount within a predetermined period. A non-participation switching signal for switching the third power storage device to a non-participating device that is not charged according to the charge control signal is generated, and the third power storage device is charged to the specific charge amount within the predetermined period. Generate a quick charge control signal,
The control signal transmission unit further transmits the non-participation switching signal and the quick charge control signal to the third power storage device when the non-participation switching signal and the quick charge control signal are generated.
8. The non-participating device identification information is acquired as identification information for identifying the third power storage device that has been switched to a non-participating device by receiving the non-participation switching signal. The power storage device control device according to 1. The power storage information acquisition unit further includes:
While obtaining the dischargeable power amount information indicating the total value of the amount of power that can be discharged by the discharge device and the chargeable power amount information indicating the total value of the amount of power that can be charged by the charging device,
Information indicating whether or not the discharge device is switched to the charging device after being discharged to the specific discharge amount, or information indicating whether or not the charging device is switched to the discharge device after being charged to the specific charge amount The power storage device control device according to any one of claims 1 to 8, wherein the transition information is acquired. A power storage device connected to a power system and controlled by a power storage device control device via a communication network,
A storage battery, and a storage controller that charges the storage battery to a specific charge amount or discharges to a specific discharge amount,
The power storage control unit
The power storage device is a discharge device that is a power storage device in a discharging process up to the specific discharge amount, a charging device that is a power storage device in a charging process up to the specific charge amount, and a power storage device that is not controlled by the power storage device control device A storage information transmitting unit that transmits identification information for identifying which of the non-participating devices to the power storage device control device;
A discharge control signal for causing the storage battery to discharge power of a power value that the power system needs to receive from the discharge device from the power storage device control device that has received the identification information, or the power system is charged. A control signal acquisition unit for acquiring a charge control signal for charging the storage battery with electric power of a power value that needs to be supplied to the device;
A charge / discharge signal generation unit that generates a charge / discharge signal indicating a discharge power value discharged from the storage battery or a charge power value charged according to the obtained discharge control signal or the charge control signal;
A charge / discharge signal transmitter for transmitting the generated charge / discharge signal to the storage battery in order to charge / discharge the electric power of the discharge power value or the charge power value to the storage battery;
A power storage device comprising: a switching unit that switches the identification information that identifies whether the power storage device is the discharge device, the charging device, or the non-participating device. When the discharging device or the non-participating device is switched to the charging device, the switching unit switches from the identification information identifying the discharging device or the non-participating device to identification information identifying the charging device, and the charging device or the When the non-participating device is switched to the discharging device, the identification information for identifying the charging device or the non-participating device is switched to the identification information for identifying the discharging device, and the discharging device or the charging device is switched to the non-participating device. Switching from identification information for identifying the discharging device or the charging device to identification information for identifying the non-participating device,
The power storage device according to claim 10, wherein the power storage information transmission unit transmits the switched identification information to the power storage device control device. The switching unit is configured to identify the non-participating device as the identification information when it is predicted that the storage battery is not charged up to the specific charge amount within a predetermined period in charging according to the charging control signal. Switch to
The power storage information transmission unit transmits the switched identification information to the power storage device control device,
The charge / discharge signal generation unit generates the charge / discharge signal for charging the storage battery to the specific charge amount within the predetermined period,
The power storage device according to claim 10 or 11, wherein the charge / discharge signal transmission unit transmits the generated charge / discharge signal to the storage battery. A plurality of power storage devices according to any one of claims 10 to 12,
A power storage device control system comprising: the power storage device control device according to any one of claims 1 to 9 that controls the plurality of power storage devices. A power storage device control method for controlling a plurality of power storage devices that repeat charging and discharging connected to a power system,
Discharge device identification information for identifying a discharge device that is a power storage device in a discharging process up to the specific discharge amount, among the plurality of power storage devices each charging to a specific charge amount or discharging to a specific discharge amount, and A storage information acquisition step for acquiring charging device identification information for identifying a charging device that is a power storage device in a charging process up to a specific charge amount;
Control amount acquisition step of acquiring a discharge power value that is a power value that the power system needs to be supplied from the discharge device, or a charge power value that is a power value that the power system needs to supply to the charging device When,
When the discharge power value is acquired in the control amount acquisition step, a discharge control signal for causing the discharge device indicated by the discharge device identification information to discharge the power of the discharge power value is generated, and the control amount acquisition step A control signal generating step for generating a charge control signal for causing the charging device indicated by the charging device identification information to charge the power of the charging power value when the charging power value is acquired in
When the discharge control signal is generated, the discharge control signal is transmitted to the discharge device so as to discharge the power of the discharge power value to the power system, and when the charge control signal is generated, And a control signal transmission step of transmitting the charge control signal to the charging device so as to charge the electric power of the charging power value from the electric power system.   The program which makes a computer perform the step contained in the electrical storage apparatus control method of Claim 14.

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