JP6174478B2 - POWER CONTROL DEVICE, DEVICE CONTROL DEVICE, AND METHOD - Google Patents

Description

  The present invention relates to a power control apparatus, a device control apparatus, and a method for performing communication according to a predetermined communication protocol.

  2. Description of the Related Art In recent years, a control system (EMS: Energy Management System) provided with an electric power consumer and equipped with a device control device that controls a plurality of devices has attracted attention. In such a system, a communication protocol is introduced for enabling a device control apparatus to control devices provided by various manufacturers.

  ECHONET Lite (registered trademark), which is one of such communication protocols, defines a device class for each type of device, and defines for each device class the information and control target of the device as properties. For example, the storage battery device belongs to the storage battery class, and the properties corresponding to the storage battery class include a storage battery capacity, a maximum and minimum charging power value, and the like (see Non-Patent Document 1).

  On the other hand, introduction of a power supply system that has a power control device (power conditioner) that can collectively convert DC power output from each of a plurality of power supply devices into AC and that supplies AC power to a load is being studied. . The plurality of power supply devices are a solar power generation device, a storage battery device, a fuel cell device, and the like.

“ECHONET SPECIFICATION APPENDIX ECHONET Device Object Detailed Regulations Release D”, October 31, 2013, Internet <URL: http://www.echonet.gr.jp/spec/pdf_spec_app_d/SpecAppendixD.pdf>

  The power supply system described above is a new system that uses a plurality of power supply devices in combination, and has a feature that is not found in a conventional system that uses a power supply device alone.

  For example, by charging the storage battery device with the direct current power output from the solar power generation device as direct current, the power conversion loss can be reduced as compared with a conventional system that performs direct current to alternating current conversion in the power supply device.

  However, the above-described communication protocol assumes only a conventional system that uses a power supply device alone, and it is difficult to achieve efficient control when a plurality of power supply devices are used in combination.

  Therefore, an object of the present invention is to provide a power control device, a device control device, and a method capable of realizing efficient control when a plurality of power supply devices are used in combination.

  The power control device according to the first feature is provided in a consumer and controls power supply from the power generation device and the storage battery device. The storage battery device is charged by at least one of system power supplied from a power system via the power control device and generated power supplied from the power generation device. The power control device includes a conversion unit capable of collectively converting DC power output from the power generation device and the storage battery device into AC, and a communication unit performing communication with an external device control device according to a predetermined communication protocol. And a control unit that controls the storage battery device based on the communication. The communication unit receives a setting request for requesting setting of a charging mode selected from a plurality of charging modes from the device control apparatus. The plurality of charging modes include at least a first charging mode in which charging is performed with the grid power and a second charging mode in which charging is performed only with the generated power.

  The equipment control device according to the second feature controls a power control device that can collectively convert DC power output from each of the power generation device and the storage battery device into AC. The storage battery device is charged by at least one of system power supplied from a power system via the power control device and generated power supplied from the power generation device. The device control device includes a communication unit that communicates with the power control device according to a predetermined communication protocol, and a control unit that selects any one of a plurality of charge modes. The communication unit transmits a setting request for requesting setting of the selected charging mode to the power control apparatus. The plurality of charging modes include at least a first charging mode in which charging is performed with the grid power and a second charging mode in which charging is performed only with the generated power.

  A method according to a third feature is used in a system including a power generation device, a storage battery device, and a power control device capable of collectively converting DC power output from each of the power generation device and the storage battery device into AC. . The storage battery device is charged by at least one of system power supplied from a power system via the power control device and generated power supplied from the power generation device. In the method, the power control device and the device control device perform communication according to a predetermined communication protocol, and the device control device selects the power control device from the plurality of charge modes in the communication. Transmitting a setting request for requesting setting of the charging mode. The plurality of charging modes include at least a first charging mode in which charging is performed with the grid power and a second charging mode in which charging is performed only with the generated power.

  According to the present invention, it is possible to provide a power control device, a device control device, and a method capable of realizing efficient control when a plurality of power supply devices are used in combination.

It is a block diagram which shows the structure of the control system which concerns on embodiment. It is a block diagram which shows the structure of the power control apparatus which concerns on embodiment. It is a block diagram which shows the structure of the apparatus control apparatus which concerns on embodiment. It is a sequence diagram which shows the sequence at the time of the node connection which concerns on embodiment. It is a sequence diagram which shows the operation | movement which concerns on embodiment. It is a flowchart which shows operation | movement of the control part of the apparatus control apparatus which concerns on embodiment.

[Outline of Embodiment]
The power control device according to the embodiment is provided in a consumer and controls power supply from the power generation device and the storage battery device. The storage battery device is charged by at least one of system power supplied from a power system via the power control device and generated power supplied from the power generation device. The power control device includes a conversion unit capable of collectively converting DC power output from the power generation device and the storage battery device into AC, and a communication unit performing communication with an external device control device according to a predetermined communication protocol. And a control unit that controls the storage battery device based on the communication. The communication unit receives a setting request for requesting setting of a charging mode selected from a plurality of charging modes from the device control apparatus. The plurality of charging modes include at least a first charging mode in which charging is performed with the grid power and a second charging mode in which charging is performed only with the generated power.

  In the embodiment, the charging mode is a property corresponding to a device class of the power control device.

  In the modification of the embodiment, the charging mode is a property corresponding to the device class of the storage battery device.

  The apparatus control apparatus which concerns on embodiment controls the electric power control apparatus which can collectively convert the direct-current power which each of a power generator and a storage battery apparatus outputs into alternating current. The storage battery device is charged by at least one of system power supplied from a power system via the power control device and generated power supplied from the power generation device. The device control device includes a communication unit that communicates with the power control device according to a predetermined communication protocol, and a control unit that selects any one of a plurality of charge modes. The communication unit transmits a setting request for requesting setting of the selected charging mode to the power control apparatus. The plurality of charging modes include at least a first charging mode in which charging is performed with the grid power and a second charging mode in which charging is performed only with the generated power.

  In the embodiment, the charging mode is a property corresponding to a device class of the power control device.

  In the modification of the embodiment, the charging mode is a property corresponding to the device class of the storage battery device. The control unit determines that the second charging mode can be selected only when the communication unit acquires the device class of the power control device.

  In the embodiment, the control unit selects one of the plurality of charging modes based on the unit power purchase price of the grid power.

  In the embodiment, when the unit price of power purchase is less than a second threshold for a time period in which the unit price of the generated power is less than a first threshold, the control unit performs the first charging mode. And when the power purchase unit price is equal to or greater than the second threshold, the second charging mode is selected.

  The method according to the embodiment is used in a system including a power generation device, a storage battery device, and a power control device capable of collectively converting DC power output from each of the power generation device and the storage battery device into AC. The storage battery device is charged by at least one of system power supplied from a power system via the power control device and generated power supplied from the power generation device. In the method, the power control device and the device control device perform communication according to a predetermined communication protocol, and the device control device selects the power control device from the plurality of charge modes in the communication. Transmitting a setting request for requesting setting of the charging mode. The plurality of charging modes include at least a first charging mode in which charging is performed with the grid power and a second charging mode in which charging is performed only with the generated power.

[Embodiment]
Hereinafter, embodiments will be described.

(System configuration)
FIG. 1 is a block diagram illustrating a configuration of a control system 10 according to the embodiment. In FIG. 1, a broken line indicates a signal line, and a solid line indicates a power line. The signal line may be wireless or wired. FIG. 2 is a block diagram illustrating a configuration of the power control apparatus 150 according to the embodiment. FIG. 3 is a block diagram illustrating a configuration of the device control apparatus 200 according to the embodiment.

  As shown in FIG. 1, the control system 10 is provided in a consumer who receives power supply from a distribution line 30 (power system). The control system 10 includes a meter device 110, a load 120, a plurality of power supply devices (solar power generation device 130 and storage battery device 140), a power control device 150, and a device control device 200. In the embodiment, the plurality of power supply devices include the solar power generation device 130 and the storage battery device 140. However, in addition to the solar power generation device 130 or in place of the solar power generation device 130, another power generation device (for example, a fuel cell device or a gas turbine power generation device) may be used.

  The meter device 110 is a device that measures system power (power purchased power) supplied from the distribution line 30 via a power line. The meter device 110 may measure the power (power sold) supplied from the power control device 150 via the power line. The meter device 110 notifies the measurement value to the device control device 200 via the signal line. The meter device 110 communicates with the device control device 200 via a signal line. The meter device 110 acquires various types of information via an external network such as a public network. Various types of information include a power purchase unit price and a power sale unit price for each time period. Such a meter device 110 is referred to as a smart meter. The meter device 110 notifies the device control device 200 of various information acquired via the external network via a signal line.

  The load 120 is a device that consumes power supplied from the distribution line 30 and / or the power control device 150 via the power line. For example, the load 120 is a refrigerator, lighting, an air conditioner, a television, or the like. The load 120 may be a single device or may include a plurality of devices. The load 120 communicates with the device control apparatus 200 via a signal line.

  The solar power generation device 130 is a device that generates power, and includes a PV (photovoltaics) 131 and a direct current-direct current (DC-DC) conversion unit 132. The PV 131 generates power in response to received sunlight and outputs the generated DC power. The DC-DC converter 132 steps up or steps down the DC power output from the PV 131 and outputs DC power (generated power) via the power line. In addition, the DC-DC converter 132 communicates with the power control apparatus 150 via a signal line.

  The storage battery device 140 is a device that stores electric power. The storage battery device 140 is charged by at least one of the system power supplied from the distribution line 30 via the power control device 150 and the generated power supplied from the solar power generation device 130. The storage battery device 140 includes a storage battery 141 and a DC-DC conversion unit 142. The storage battery 141 accumulates (charges) power and supplies (discharges) power. The DC-DC converter 142 boosts or lowers the DC power supplied via the power line when the storage battery 141 is charged, and outputs the DC power to the storage battery 141. The DC-DC converter 142 boosts or steps down the DC power output from the storage battery 141 when the storage battery 141 is discharged, and outputs DC power (discharge power) via the power line. Moreover, the DC-DC conversion part 142 communicates with the power control apparatus 150 via a signal line.

  The power line extending from the solar power generation device 130 is electrically connected to the power line extending from the storage battery device 140, and the connected power line is connected to the power control device 150. The power line transmits DC power.

  The power control device 150 is a device that controls power supply from the solar power generation device 130 and the storage battery device 140. As illustrated in FIG. 2, the power control device 150 includes a communication unit 151, a control unit 152, and a direct current-alternating current (DC-AC) conversion unit 153. The communication unit 151 communicates with the solar power generation device 130, the storage battery device 140, and the device control device 200 via a signal line. The control part 152 controls the solar power generation device 130 and the storage battery device 140 by the communication. Further, the control unit 152 controls the DC-AC conversion unit 153. The DC-AC conversion unit 153 collectively converts DC power output from each of the solar power generation device 130 and the storage battery device 140 into AC. The DC-AC conversion unit 153 can also convert AC power (system power) supplied from the distribution line 30 into DC.

  The power control device 150 constitutes a power supply system that collectively converts DC power output from each of the plurality of power supply devices into AC and supplies the AC power to the load 120. Hereinafter, such a power feeding system is referred to as a “multi-DC link system”. The multi-DC link system is a new system in which a plurality of power supply devices are used in combination, and has a feature not found in a conventional system that uses a power supply device alone. For example, the DC-AC conversion loss can be prevented from occurring by charging the storage battery device 140 with the DC power (generated power) output from the solar power generation device 130 as DC.

  The device control apparatus 200 controls a plurality of devices provided to consumers. The device control apparatus 200 is, for example, a HEMS (Home Energy Management System) that controls a plurality of devices provided in a house. As illustrated in FIG. 3, the device control apparatus 200 includes a communication unit 210 and a control unit 220. The communication unit 210 communicates with the meter device 110, the load 120, and the power control device 150 via a signal line. The control unit 220 controls the load 120 and the power control device 150 based on information acquired from the meter device 110 by the communication unit 210, for example. The communication unit 151 of the power control device 150 and the communication unit 210 of the device control device 200 communicate according to a predetermined communication protocol.

(Communication protocol)
In the embodiment, the predetermined communication protocol is ECHONET Lite (registered trademark).

  The protocol stack of a device (also referred to as a “node”) compliant with ECHONET Lite (registered trademark) is divided into three layers: a lower communication layer, communication middleware, and application software. In the OSI reference model, the lower communication layer corresponds to the first layer to the fourth layer, the communication middleware corresponds to the fifth layer to the sixth layer, and the application software corresponds to the seventh layer. ECHONET Lite (registered trademark) defines the specifications of the communication middleware, and does not specify the specifications of the lower communication layer.

  In the embodiment, each of the communication unit 151 of the power control device 150 and the communication unit 210 of the device control device 200 executes functions of a lower communication layer and a communication middleware. Each of the control unit 152 of the power control device 150 and the control unit 220 of the device control device 200 executes a function of application software.

  In addition, ECHONET Lite (registered trademark) defines a device class (also referred to as “device object”) for each device type, and defines parameters related to the device for each device class as properties. For example, the solar power generation device 130 belongs to the “residential solar power generation class”, and the storage battery device 140 belongs to the “storage battery class”. Further, the properties corresponding to the storage battery class include a storage battery capacity and a maximum and minimum charging power value. In the embodiment, a “multi-DC link class” is newly defined as a device class of the power control apparatus 150.

  The communication unit 151 of the power control device 150 relates to each property relating to the solar power generation device 130 (residential solar power generation class), each property relating to the storage battery device 140 (storage battery class), and to the power control device 150 (multi-DC link class). Manage each property. Information managed for each device class in this way is referred to as an “instance”. In addition, the communication unit 151 of the power control apparatus 150 manages the attribute information (for example, manufacturer code, product code, serial number) of the power control apparatus 150 as a “node profile (profile object)”.

  The message transmitted and received by the communication middleware includes, for example, “transmission source object identification code”, “transmission destination object identification code”, “service identification code”, “property identification code”, “property value”, and the like. The transmission source object identification code is information for identifying the transmission source object. The transmission destination object identification code is information (device class identification code) for identifying the transmission destination object. The service identification code is information for identifying the operation content for the property value. The service identification code is, for example, “Set” which is a property value setting request or “Get” which is a property value read request. The property identification code is information for identifying a property.

(Sequence when connecting nodes)
FIG. 4 is a sequence diagram illustrating a sequence at the time of node connection according to the embodiment. The node connection sequence is started, for example, when the device control apparatus 200 is activated. Each message shown in FIG. 4 is transmitted and received by the communication unit 151 of the power control device 150 and the communication unit 210 of the device control device 200.

  As shown in FIG. 4, in step S11, the device control apparatus 200 generates a read request (hereinafter referred to as a “Get message”) requesting reading of a main node profile (manufacturer code, product code, serial number, etc.) as power. It transmits to the control apparatus 150.

  In step S <b> 12, the power control apparatus 150 transmits a read response (hereinafter referred to as “Get Res message”) notifying the main node profile to the device control apparatus 200 in response to the reception of the Get message. The device control apparatus 200 acquires a main node profile and detects a node using the Get Res message, but at this time, the instance managed by the node is unknown.

  In step S13, the device control apparatus 200 transmits to the detected node (power control apparatus 150) a Get message requesting reading of an instance list that is a list of instances managed by the node.

  In step S <b> 14, the power control apparatus 150 transmits a Get Res message notifying the instance list of the own node to the device control apparatus 200 in response to the reception of the Get message. The instance list includes an instance of a residential photovoltaic class, an instance of a storage battery class, and an instance of a multi-DC link class. In other words, the power control device 150 notifies the device control device 200 of the device class of the power control device 150 in addition to notifying the device control device 200 of the device classes of the solar power generation device 130 and the storage battery device 140. To do.

  The device control apparatus 200 acquires an instance list by the Get Res message. In other words, the device control apparatus 200 acquires the device class of the power control device 150 from the power control device 150 in addition to acquiring the device classes of the solar power generation device 130 and the storage battery device 140 from the power control device 150. To do. As a result, the device control apparatus 200 manages the instances of the residential solar power generation class and the storage battery class and the instances of the multi-DC link class while the detected node (power control apparatus 150) manages each instance. Know that you are.

  In step S <b> 15, device control apparatus 200 transmits a Get message requesting reading of a property map of an instance of the storage battery class to power control apparatus 150. The property map is a list of properties included in the instance.

  In step S <b> 16, the power control apparatus 150 transmits a Get Res message that notifies the property map of the instance of the storage battery class to the device control apparatus 200 in response to the reception of the Get message. The device control apparatus 200 acquires the property map of the instance of the storage battery class by the Get Res message. Examples of the properties included in the instance of the storage battery class (hereinafter referred to as “property corresponding to the storage battery class”) include an operation state, an operation mode setting, an instantaneous charge / discharge power measurement value, a remaining power storage amount, and a storage battery type.

  In step S <b> 17, the device control apparatus 200 transmits a Get message requesting reading of the property map of the instance of the residential solar power generation class to the power control apparatus 150.

  In step S <b> 18, the power control apparatus 150 transmits a Get Res message that notifies the property map of the instance of the residential solar power generation class to the device control apparatus 200 in response to the reception of the Get message. The device control apparatus 200 acquires the property map of the instance of the residential solar power generation class using the Get Res message. Examples of properties included in an instance of a residential solar power generation class (hereinafter referred to as “property corresponding to a residential solar power generation class”) include an operating state, an instantaneous generated power measurement value, an integrated generated power measurement value, and power generation. Examples include power limit settings.

  In step S <b> 19, the device control apparatus 200 transmits to the power control apparatus 150 a Get message that requests reading of the property map of the instance of the multi-DC link class.

  In step S20, the power control apparatus 150 transmits a Get Res message that notifies the property map of the instance of the multi-DC link class to the device control apparatus 200 in response to the reception of the Get message. The device control apparatus 200 acquires the property map of the instance of the multi-DC link class using the Get Res message. A specific example of a property included in an instance of a multi DC link class (hereinafter referred to as “property corresponding to a multi DC link class”) will be described later.

(Operation according to the embodiment)
When the above-described node connection sequence is completed, the device control apparatus 200 grasps the properties included in each instance managed by the power control apparatus 150 so that the device control apparatus 200 can control the power control apparatus 150. Become.

  The communication unit 210 of the device control apparatus 200 transmits a setting request for requesting setting of a property (specific property) corresponding to the multi-DC link class to the power control apparatus 150. The setting request includes the object identification code of the device control apparatus 200 as the “transmission source object identification code”, the object identification code of the power control apparatus 150 as the “transmission destination object identification code”, and the “service identification code” as, for example, A message including Set, including an identification code of a specific property as “property identification code”, and including a property value of the specific property as “property value”. Hereinafter, such a message is referred to as a “Set message”. The Set message includes a “SetC message” that is a Set message that requires a response and a “SetI message” that is a Set message that does not require a response.

  The communication unit 151 of the power control device 150 receives from the device control device 200 a Set message that requests setting of a property corresponding to the multi-DC link class. The control unit 152 of the power control device 150 controls at least one of the solar power generation device 130 and the storage battery device 140 based on the Set message. Thus, the power control device 150 is not based on the property corresponding to the residential solar power generation class or the property corresponding to the storage battery class, but based on the property corresponding to the multi-DC link class, and the solar power generation device 130 and the storage battery device. Control at least one of 140.

  That is, the power control device 150 autonomously controls the solar power generation device 130 and the storage battery device 140 in place of the device control device 200. Thereby, when a new system (multi-DC link system) using a combination of a plurality of power supply devices is introduced, efficient control can be realized.

  In the embodiment, the property corresponding to the multi-DC link class includes the charging mode of the storage battery device 140. The charging mode includes at least a first charging mode (hereinafter referred to as “normal charging mode”) in which charging is performed using system power, and a second charging mode (hereinafter referred to as “surplus charging mode”) in which charging is performed only by generated power. And including.

  The normal charging mode and the surplus charging mode are included in the “operation mode setting” property. In this case, either the normal charging mode or the surplus charging mode can be specified in the “operation mode setting” property. Alternatively, the “operation mode setting” property is integrated into “charging”, and one of the normal charging mode and the surplus charging mode is specified by another property (for example, “charging power setting” property). Also good.

  The control unit 220 of the device control apparatus 200 selects one of the charging modes from the normal charging mode and the surplus charging mode. In the embodiment, the control unit 220 selects one of a plurality of charging modes based on the unit power purchase price of the grid power. For example, the control unit 220 selects the first charging mode for the time zone in which the unit price of generated power is less than the first threshold, and selects the first charging mode when the unit price for purchase is less than the second threshold. When the electricity unit price is equal to or higher than the second threshold, the second charging mode is selected. The communication unit 210 of the device control apparatus 200 transmits to the power control apparatus 150 a Set message that requests setting of the charging mode (normal charging mode or surplus charging mode) selected by the control unit 220.

  The communication unit 151 of the power control device 150 receives from the device control device 200 a Set message that requests setting of the selected charge mode (normal charge mode or surplus charge mode). The control unit 152 of the power control device 150 controls the storage battery device 140 based on the Set message.

  When the normal charging mode is designated by the Set message, the control unit 152 of the power control device 150 charges the storage battery device 140 with predetermined charging power. Here, when the generated power of the solar power generation device 130 is insufficient with respect to the predetermined charging power, the system power is charged into the storage battery device 140 by supplying the system power to the storage battery device 140.

  On the other hand, when the surplus charging mode is specified by the Set message, the control unit 152 of the power control device 150 allows the surplus power to remain even if the generated power of the solar power generation device 130 is supplied to the load 120. The surplus power is charged in the storage battery device 140. That is, control for supplying grid power to the storage battery device 140 for charging is not performed.

  FIG. 5 is a sequence diagram illustrating an operation according to the embodiment.

  As illustrated in FIG. 5, in step S101, the device control apparatus 200 transmits a SetC message requesting setting of the surplus charging mode to the power control apparatus 150 as a property corresponding to the multi-DC link class. In response to the reception of the SetC message, the power control device 150 controls the storage battery device 140 (and the DC-AC conversion unit 153) to charge only the power generated by the solar power generation device 130.

  In step 102, the power control device 150 transmits a Set Res message notifying the setting of the surplus charging mode to the device control device 200.

  FIG. 6 is a flowchart showing the operation of the control unit 220 of the device control apparatus 200 according to the embodiment. The flow shown in FIG. 6 is performed for each target time zone.

  As shown in FIG. 6, in step S <b> 201, the control unit 220 identifies the power purchase unit price and the power sale unit price in the target time zone based on the information acquired from the meter device 110.

  In step S202, the control unit 220 compares the power selling unit price in the target time zone with a threshold value 1 (first threshold value).

  When the power selling unit price in the target time zone is greater than or equal to the threshold 1 (step S202; YES), in step S203, the control unit 220 selects the discharge mode as the operation mode in the target time zone.

  On the other hand, when the power sale unit price in the target time zone is less than the threshold value 1 (step S202; NO), in step S204, the control unit 220 sets the power purchase unit price in the target time zone to the threshold value 2 (second threshold value). Compare with The threshold 2 may be the same value as the threshold 1 or a different value.

  When the power purchase unit price in the target time zone is less than or equal to the threshold value 2 (step S204; NO), in step S205, the control unit 220 selects the normal charge mode as the operation mode in the target time zone.

  On the other hand, when the power purchase unit price in the target time zone is greater than or equal to the threshold 2 (step S204; YES), in step S206, the control unit 220 selects the surplus charging mode as the operation mode in the target time zone.

(Summary of embodiment)
As described above, in the embodiment, the control unit 220 of the device control apparatus 200 selects one of the charging modes from the normal charging mode and the surplus charging mode. The communication unit 210 of the device control apparatus 200 transmits to the power control apparatus 150 a Set message that requests setting of the charging mode (normal charging mode or surplus charging mode) selected by the control unit 220. The communication unit 151 of the power control device 150 receives from the device control device 200 a Set message that requests setting of the selected charge mode (normal charge mode or surplus charge mode). The control unit 152 of the power control device 150 controls the storage battery device 140 based on the Set message.

  Thereby, the apparatus control apparatus 200 can use the surplus charge and the normal charge properly even in the same charge. For example, when the power purchase unit price is low, when the power purchase unit price is low, the battery is intensively charged in the normal charge mode, and when the power purchase unit price is high, only surplus power is charged in the surplus charge mode. Therefore, efficient power control becomes possible. When a smart meter is introduced and the electricity price for each time zone changes dynamically due to dynamic pricing, it becomes more effective to use the two charging modes properly.

[Example of change]
In the embodiment described above, the surplus charging mode is a property of the multi-DC link class, but the surplus charging mode may be a property of the storage battery class. In this case, the control unit 220 of the device control apparatus 200 determines that the surplus charging mode can be selected in the storage battery class only when the storage battery class and the multi-DC link class are acquired from the same node. That is, when the storage battery class and the multi-DC link class are not acquired from the same node, selection of the surplus charging mode in the storage battery class is prohibited.

[Other Embodiments]
The device control apparatus 200 may transmit, to the power control apparatus 150, a Get message that requests reading of the operation mode setting (including the surplus charging mode) of the storage battery apparatus 140 as a property corresponding to the multi-DC link class. In addition, the power control device 150 may transmit a Get Res message that notifies the operation mode setting (including the surplus charging mode) of the storage battery device 140 to the device control device 200 in response to reception of the Get message.

  In embodiment mentioned above, the house was assumed as a consumer and the case where the apparatus control apparatus 200 was HEMS was illustrated. However, the device control apparatus 200 may be a CEMS (Cluster / Community Energy Management System), a BEMS (Building Energy Management System), a FEMS (Factor Energy Management System, or an Energy Management System).

  In the above-described embodiment, the system based on ECHONET Lite (registered trademark) is exemplified. However, the present invention is not limited to a system conforming to ECHONET Lite (registered trademark), and the present invention may be applied to a system conforming to another communication protocol such as ZigBee (registered trademark) or KNX.

  DESCRIPTION OF SYMBOLS 10 ... Control system, 30 ... Distribution line (electric power system), 110 ... Meter apparatus, 120 ... Load, 130 ... Solar power generation device, 131 ... PV, 132 ... DC-DC conversion part, 140 ... Storage battery apparatus, 141 ... Storage battery DESCRIPTION OF SYMBOLS 142 ... DC-DC conversion part 150 ... Power control apparatus 151 ... Communication part 152 ... Control part 153 ... DC-AC conversion part 200 ... Device control apparatus 210 ... Communication part 220 ... Control part

Claims (9)

A power control device that converts direct current power output from each of the power generation device and the storage battery device into alternating current power and communicates with the device control device according to a predetermined communication protocol ,
A receiving unit that receives from the device control device a first request message for requesting a power control device property map that is a list of properties corresponding to the device class of the power control device;
A transmission unit that transmits a first response message including the power control device property map to the device control device in response to the first request message;
The receiver receives a setting request message for requesting setting of a charging mode selected from a plurality of charging modes determined as a charging mode of the storage battery device as a message transmitted based on the first response message. Received from the device control device,
The plurality of charging modes include a first charging mode in which the storage battery device is charged with power supplied from at least grid power, and power output from the power generator without using power supplied from the grid power. And a second charging mode for charging the storage battery device.   The receiving unit receives a second request message for requesting a storage battery device property map that is a list of properties corresponding to the device class of the storage battery device from the device control device,
  The transmission unit transmits a second response message including the storage battery device property map to the device control device in response to the second request message,
  2. The power control according to claim 1, wherein the receiving unit receives the setting request message from the device control apparatus as a message transmitted based on the first response message and the second response message. apparatus.   The power control apparatus according to claim 1, wherein at least one of the plurality of charging modes is a property included in the power control apparatus property map.   The power control device according to claim 2, wherein at least one of the plurality of charging modes is a property included in the storage battery device property map.   5. The power control device according to claim 1, wherein in the second charging mode, the power output from the power generation device is supplied to the storage battery device as direct current power. . A device control device that communicates with a power control device that converts DC power output from each of the power generation device and the storage battery device into AC power according to a predetermined communication protocol,
A transmission unit that transmits to the power control device a first request message that requests a power control device property map that is a list of properties corresponding to the device class of the power control device;
A receiving unit for receiving a first response message including the power control device property map from the power control device in response to the first request message;
The transmission unit sends a setting request message for requesting setting of a charging mode selected from a plurality of charging modes determined as a charging mode of the storage battery device to the power control device based on the first response message. Send
The plurality of charging modes include a first charging mode in which the storage battery device is charged with power supplied from at least grid power, and power output from the power generator without using power supplied from the grid power. And a second charging mode for charging the storage battery device.   The transmission unit transmits a second request message for requesting a storage battery device property map that is a list of properties corresponding to the device class of the storage battery device to the power control device,
  The receiving unit receives a second response message including the storage battery device property map from the power control device in response to the second request message,
  The device control apparatus according to claim 6, wherein the transmission unit transmits the setting request message to the power control apparatus based on the first response message and the second response message. A method for use in a system comprising: a power control device that converts DC power output from each of a power generation device and a storage battery device into AC power; and a device control device that communicates with the power control device according to a predetermined communication protocol. ,
Transmitting a first request message for requesting a power control device property map that is a list of properties corresponding to a device class of the power control device from the device control device to the power control device;
Transmitting a first response message including the power control device property map from the power control device to the device control device in response to the first request message;
Setting that requests setting of a charging mode selected from a plurality of charging modes determined as a charging mode of the storage battery device based on the first response message from the device control device to the power control device Sending a request message,
The plurality of charging modes include a first charging mode in which the storage battery device is charged with power supplied from at least grid power, and power output from the power generator without using power supplied from the grid power. And a second charging mode for charging the storage battery device .   Transmitting a second request message for requesting a storage battery device property map that is a list of properties corresponding to a device class of the storage battery device from the device control device to the power control device;
  Transmitting a second response message including the storage battery device property map in response to the second request message from the power control device to the device control device,
  The step of transmitting the setting request message is a step of transmitting the setting request message from the device control device to the power control device based on the first response message and the second response message. 9. A method according to claim 8, characterized in that

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