WO2017018344A1

WO2017018344A1 - Communication device and communication method

Info

Publication number: WO2017018344A1
Application number: PCT/JP2016/071557
Authority: WO
Inventors: 真史合川; 良太寺井
Original assignee: 京セラ株式会社
Priority date: 2015-07-29
Filing date: 2016-07-22
Publication date: 2017-02-02
Also published as: JPWO2017018344A1

Abstract

A communication device comprising: a receiving unit that receives a first message from an administrative server via a communication line, said first message including a power source control message that requests control of a distributed power source installed in a facility, a power flow control message that requests control of the power flow rate from a power grid to the facility, or a reverse power flow control message that requests control of the reverse power flow rate from the facility to the power grid; and a transmission unit that transmits a second message to the administrative server, said second message being in response to the first message and relating to the control of the power flow rate or the reverse power flow rate.

Description

Communication apparatus and communication method

The present invention relates to a power supply control message for requesting control of a distributed power source installed in a facility, a communication device for transmitting a first message for requesting control of a tidal flow from the power system to the facility or a reverse power flow from the facility to the power system, and It relates to a communication method.

Electric power including a power flow suppression message (for example, DR: Demand Response) requesting suppression of power flow from the power system to the facility or a power flow suppression message requesting suppression of reverse power flow from the facility to the power system Command message is known. A power command message is transmitted from a management server belonging to a power company or a power distribution company to a facility via a communication line (for example, Patent Document 1).

JP 2012-244665 A

The communication device according to the first feature includes a power control message for requesting control of a distributed power source installed in a facility via a communication line, a power flow control message for requesting control of a power flow from the power system to the facility, or the A receiving unit that receives a first message including a reverse power flow control message for requesting control of a reverse power flow from the facility to the power system from the management server; and the controlled power flow or the reverse power flow corresponding to the first message A transmission unit that transmits a second message related to the amount control to the management server.

In the communication method according to the second feature, a management server requests a power control message for requesting control of a distributed power source installed in a facility via a communication line, and a power flow for requesting control of a tidal flow from the power system to the facility. A step of transmitting a first message including a control message or a reverse flow control message requesting control of a reverse power flow from the facility to the power system to the communication device, and the communication device performs in response to the first message. And a step B of transmitting a second message related to the control of the tidal flow or the reverse tidal flow to the management server.

FIG. 1 is a diagram illustrating a power management system 1 according to the embodiment. FIG. 2 is a diagram illustrating the communication device 110 according to the embodiment. FIG. 3 is a diagram illustrating the lower management server 300 according to the embodiment. FIG. 4 is a diagram illustrating a communication method according to the embodiment. FIG. 5 is a diagram illustrating a communication method according to the embodiment.

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

However, it should be noted that the drawings are schematic and ratios of dimensions may differ from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships or ratios are included between the drawings.

[Outline of Disclosure]
In the background art described above, when tampering or disappearance of the power command message occurs, there is a possibility that the tidal flow or the reverse tidal flow may not be appropriately suppressed as expected by the power company or the power distribution company. .

A communication device according to an outline of the disclosure includes a power control message that requests control of a distributed power source installed in a facility via a communication line, a tidal flow control message that requests control of a tidal flow rate from the power system to the facility, or the facility For receiving from the management server a first message including a reverse power flow control message for requesting control of the reverse power flow to the power system, and for controlling the power flow or the reverse power flow according to the first message A transmission unit that transmits the second message to the management server.

In the summary of the disclosure, the communication device transmits a second message related to the control of the tidal flow or the reverse tidal flow according to the first message to the management server. Therefore, the falsification or disappearance of the first message can be verified by the management server, and the tidal flow or the reverse tidal flow can be appropriately controlled as assumed by the electric power company or the power distribution company.

[Embodiment]
(Power management system)
Hereinafter, the power management system according to the embodiment will be described. FIG. 1 is a diagram illustrating a power management system 1 according to the embodiment.

As shown in FIG. 1, the power management system 1 includes a facility 100, a network 200, a lower management server 300, and a higher management server 400.

The facility 100 includes a communication device 110, a load 120, and a distributed power source 130. The communication device 110 is a communication device provided in the facility 100 and communicates with the lower management server 300 or the upper management server 400. The communication device 110 is a device (Energy Management System) that manages the power of equipment provided in the facility 100 or a PCS (Power Conditioning System) that controls the distributed power supply 130. The load 120 is a device that consumes power. The load 120 includes devices such as a refrigerator, lighting, an air conditioner, and a television, for example. The load 120 may include a single device or a plurality of devices. The distributed power supply 130 is a device that generates power. The distributed power supply 130 includes devices such as a solar cell, a fuel cell, and a storage battery, for example. The distributed power supply 130 may include a single device or a plurality of devices. When the distributed power source 130 includes a plurality of devices, the distributed power source 130 may include at least two of a solar cell, a fuel cell, and a storage battery. More specifically, the distributed power source 130 includes a solar cell and a storage battery, or includes a fuel cell and a storage battery.

In the embodiment, the facility 100A, the facility 100B, and the facility 100C are illustrated as the facility 100. The facility 100A, the facility 100B, and the facility 100C have the same configuration. In the embodiment, there are three facilities 100A to 100C as the facility 100. However, the present invention is not limited to this, and there may be one facility 100 or a plurality of facilities 100.

The network 200 may be any communication means for connecting the facility 100 and the lower management server 300. Specifically, the network 200 is a communication line, for example, the Internet. The network 200 is provided by, for example, a provider with which each facility 100 contracts. The network 200 may be a dedicated line.

The lower management server 300 is a server belonging to an aggregator such as a power distribution company. The aggregator is a business operator that manages the tide flow rate or the reverse tide flow rate of the facility 100 contracted with the aggregator.

In the embodiment, the lower management server 300A and the lower management server 300B are illustrated as the lower management server 300. The lower management server 300A and the lower management server 300B have the same configuration. There may be one lower management server 300 or a plurality of lower management servers 300. The lower management server 300 may be integrated with the upper management server 400.

The upper management server 400 is a server belonging to an electric power company such as an electric power company. The electric power company may entrust the management of the tidal flow or reverse tidal flow of the facility 100 to the aggregator.

In the embodiment, the upper management server 400 transmits a power flow control message (for example, DR; Demand Response) that requests an increase or decrease in power flow (power supply amount) to the facility 100 from the power system. The upper management server 400 transmits a reverse flow control message requesting an increase or decrease in reverse flow from the facility 100 to the power system. The upper management server 400 may transmit a power control message for controlling the operation of the distributed power supply 130. The power supply control message is a command for controlling the operation of the distributed power supply 130 of the facility 100 as a virtual power plant, and examples thereof include commands such as charging, discharging, power generation, reverse power flow, and automatic operation. In the embodiment, the power control message, the power flow control message, and the reverse power control message are collectively referred to as a power command message. The power command message is an example of a first message.

Here, the power flow control message includes information indicating the control level (for example, the control level) of the amount of power (flow rate) supplied from the power system to the facility 100. The degree of suppression may be represented by an absolute value of electric energy (for example, OO kW). Alternatively, the suppression degree may be represented by a relative value of the electric energy (for example, a decrease in OO kW). Alternatively, the suppression degree may be expressed as a power consumption suppression ratio (for example, OO%).

Alternatively, the power flow control message may include information indicating a power purchase price that is the price of the power flow from the power system. By setting a high price as the power purchase price, it is expected that the amount of power supplied from the power system to the facility 100 will be suppressed.

The reverse power flow control message includes information indicating the degree of control (for example, the degree of suppression) of the amount of power (reverse power flow) output from the facility 100 to the power system. Specifically, the reverse power flow control message includes information indicating the degree of suppression of the output of the distributed power supply. The suppression degree may be represented by an absolute value (for example, OO kW) of the output of the distributed power source. Alternatively, the degree of suppression may be represented by a relative value of the output of the distributed power source (for example, a decrease in OO kW). Alternatively, the suppression degree may be expressed as a suppression ratio (for example, OO%) of the output of the distributed power source. The suppression ratio may be a ratio with respect to an output that is certified as an output capability of the PCS that controls the distributed power supply (hereinafter referred to as equipment certified output) when the distributed power supply is installed in the facility 100. When the output capability of the distributed power supply and the output capability of the PCS are different, the facility certified output is the smaller output capability of these output capabilities. In the case where a plurality of PCSs are installed, the facility authorization output is the sum of the output capacities of the plurality of PCSs.

In the power control message, in addition to the commands such as charging, discharging, power generation, reverse power flow or automatic operation as described above, the type of the distributed power source 130, the AC upper limit setting for charging or discharging, the AC lower limit setting for charging or discharging, Commands such as charge amount, charge time, AC effective capacity, discharge amount, discharge time, power generation amount, power generation time, reverse power flow rate, reverse power flow time, or automatic operation time may be included.

Here, the power command message may be a message requesting control of the tidal flow or reverse power flow in real time, or may be a message including a schedule requesting control of the tidal flow or reverse power flow. Real-time means that the control of the tidal flow or the reverse tidal flow is requested immediately, and the execution of the control is requested within a predetermined time such as within 10 minutes or within 30 minutes. The message requested in real time may include a predetermined time from when it is received until the control is executed, or may include a command for automatically controlling the tidal flow or the reverse tidal flow after reception.

For example, when the reverse power flow control message is a message including a schedule for requesting control of reverse power flow, the reverse power flow control message is a calendar indicating whether or not to request control of reverse power flow for each date and time zone. It may be information. In the calendar information, the output control schedule of the distributed power supply 130 can be set in units of demand time periods. Here, the demand time period varies depending on the country, and is set to, for example, 30 minutes in Japan and the United Kingdom, 60 minutes in the United States, and 15 minutes in Germany. The calendar information may include a schedule for one day, a schedule for one month, or a schedule for one year.

In the embodiment, a predetermined period may be set as the maximum period during which the output control of the distributed power supply 130 is performed. The predetermined period may be, for example, the number of days in one year (days rule) or the cumulative time in one year (cumulative time rule). Specifically, the predetermined period may be, for example, 30 days in one year (30 day rule) or 360 hours in one year (360 hour rule). However, the predetermined period may not be determined (specified rule).

Here, as a format of the power supply control message, the power flow control message, and the reverse power flow control message, a format compliant with an automatic demand response (ADR) can be used. Communication between the upper management server 400 and the lower management server 300 and communication between the lower management server 300 and the facility 100 may be performed by a method based on the same standard. As a method conforming to the same standard, for example, a method conforming to the Open ADR standard can be used. Any version of the Open ADR standard can be used. For example, Open ADR2.0 can be used.

(Communication device)
Hereinafter, a communication apparatus according to the embodiment will be described. FIG. 2 is a diagram illustrating the communication device 110 according to the embodiment. The communication device 110 includes a communication unit 111 and a control unit 112.

The communication unit 111 includes a communication module and the like, and communicates with the lower management server 300 or the upper management server 400. Here, a case where the communication unit 111 communicates with the lower management server 300 is illustrated. For example, the communication unit 111 receives a power command message including a power control message, a power flow control message, or a reverse power flow control message from the lower management server 300 via the network 200 (communication line).

In the embodiment, the communication unit 111 transmits, to the lower management server 300, a control operation message related to the control of the tidal flow or the reverse tidal flow according to the power command message. The control operation message is an example of a second message.

The power command message is assumed to be a message requesting in real time or a message requesting non-real time. When the message is requested in non-real time, for example, a message including a requested schedule is assumed.

For example, when the power command message is a message requesting real-time control of the tidal flow or reverse power flow, the communication unit 111 subordinates the control operation message including real-time information related to control of the tidal flow or reverse power flow. It transmits to the management server 300. For example, the real-time information related to the control of the tidal flow or the reverse tidal flow is information indicating the control state of the tidal flow or the reverse tidal flow at the time when the time lag necessary for the control has elapsed from the reception timing of the power command message, or the time lag It is information indicating the time. The communication unit 111 may transmit the control operation message within a predetermined time in response to receiving the power command message. Note that the communication unit 111 may transmit the control operation message after a predetermined time in response to reception of the power command message.

Alternatively, when the power command message is a message including a schedule for requesting control of tidal flow or reverse power flow, the communication unit 111 transmits a control operation message including information on a schedule relating to control of the tidal flow or reverse power flow. It transmits to the lower management server 300. The schedule information relating to the control of the tidal flow or the reverse tidal flow is information indicating whether or not to control the tidal flow or the reverse tidal flow for each date and time zone. Such schedule information may have the same format as the calendar information described above.

The communication unit 111 transmits a control operation message in response to the detection of the trigger. The trigger is, for example, an event that reaches a predetermined timing. The predetermined timing is a predetermined timing. The predetermined timing may be, for example, once a day, or once every several hours. In addition, the predetermined timing includes, for example, a timing at which a power command message is received and what control operation is performed, a timing at which the power command message is executed, and the like. Further, a control operation message transmission request from the lower management server 300 may be used as a trigger. An input signal from the user may be used as a trigger.

The control operation message according to the embodiment only needs to include information that can be compared with the power command message. For example, the control operation message may include the degree of suppression of the tide flow rate or the reverse tide flow rate. As described above, the degree of suppression may be represented by an absolute value (for example, OO kW) of the output of the distributed power source. Alternatively, the degree of suppression may be represented by a relative value of the output of the distributed power source (for example, a decrease in OO kW). Alternatively, the suppression degree may be expressed as a suppression ratio (for example, OO%) of the output of the distributed power source. The suppression operation message may be information that is scheduled to suppress the tide flow rate or the reverse tide flow rate, or may be information on the suppressed performance. Further, the control operation message may include information related to the type (solar cell, fuel cell, storage battery) of the distributed power source 130 that controls (performed) the tidal flow rate or the reverse tidal flow rate.

The control operation message may be the power command message itself. The control operation message may be only the power command message, or the power command message may be included as part of the control operation message. By transmitting the received power command message itself as a control operation message, the lower management server 300 can confirm that the power command message has not been tampered with or lost.

The control unit 112 includes a CPU, a memory, and the like, and controls the communication unit 111. For example, the control unit 112 controls transmission of the control operation message.

In the embodiment, the control unit 112 controls the control of the tide flow rate or the reverse tide flow rate. Specifically, the control unit 112 controls the distributed power supply 130 according to the power command message. When the power command message is a reverse power flow control message and the content of the control operation message is different from the content of the reverse power flow control message, the control unit 112 stops the operation of the distributed power supply 130 according to a stop request message described later. To do.

(Management server)
Hereinafter, the management server according to the embodiment will be described. Here, the lower management server 300 is illustrated as the management server. However, the upper management server 400 may be the management server. FIG. 3 is a diagram illustrating the lower management server 300 according to the embodiment. As shown in FIG. 3, the lower management server 300 includes a communication unit 310 and a control unit 320.

The communication unit 310 includes a communication module and the like, and communicates with the facility 100 and the upper management server 400. For example, the communication unit 310 receives a power command message including a power control message, a power flow control message, or a reverse power flow control message from the upper management server 400. The communication unit 310 transmits a power command message including a power control message, a power flow control message, or a reverse power flow control message to the communication device 110 via the network 200 (communication line).

Since the management of the tidal flow or the reverse tidal flow of the facility 100 is entrusted to the aggregator (lower management server 300), the content of the power command message transmitted to the communication device 110 is the power command message received from the higher management server 400. It may be different from the contents. More specifically, the power command message sent from the upper management server 400 may be achieved by each facility 100 or may be achieved by a plurality of facilities 100. If the power command message is to be achieved at a plurality of facilities 100, the lower management server 300 selects an appropriate facility 100. Then, the lower management server 300 transmits a power command message to be achieved in each facility 100 to the selected facility 100.

In the embodiment, the communication unit 310 receives a control operation message from the communication device 110. The control operation message includes real-time information related to the control of the tidal flow or the reverse tidal flow or a schedule requesting the control of the tidal flow or the reverse tidal flow.

The control unit 320 includes a CPU and a memory, and controls the communication unit 310.

For example, when the content of the control operation message is different from the content of the power command message, the control unit 320 controls the communication unit 310 to retransmit the power command message.

Alternatively, when the content of the control operation message is different from the content of the power command message, the control unit 320 transmits a stop request message for requesting to stop the operation of the distributed power supply 130 that the facility 100 has. The change request message is not limited to the stop request message, and may be, for example, a change request message for changing the operation of the distributed power supply 130 to the content of the power command message. When the power command message is a reverse power flow control message and the content of the control operation message is different from the content of the reverse power flow control message, the control unit 320 requests to stop the operation of the distributed power supply 130 of the facility 100. The communication unit 310 is controlled to transmit the request message.

Here, the control unit 320 may control the communication unit 310 to transmit a stop request message when the content of the control operation message is different from the real-time information. On the other hand, when the content of the control operation message is different from the schedule information, control unit 320 may control communication unit 310 to retransmit the power command message.

(Communication method)
Hereinafter, a communication method according to the embodiment will be described. 4 and 5 are diagrams illustrating a communication method according to the embodiment.

First, the case where the power command message is a message requesting control of the tidal flow or the reverse tidal flow in real time will be described with reference to FIG.

As shown in FIG. 4, in step S <b> 101, the lower management server 300 transmits a power command message to the communication device 110.

In step S102, the communication device 110 transmits a control operation message to the lower management server 300. The control operation message includes real-time information related to the control of the tidal flow rate or the reverse tidal flow rate.

In step S103, the lower management server 300 compares and verifies the identity of whether the content of the control operation message is different from the content of the power command message. The lower management server 300 may transmit the result of comparing the identity of the content of the control operation message and the content of the power command message to the communication device 110. The result of the comparison is, for example, information indicating that it is the same or different. Here, the description will be continued assuming that the power command message is a reverse power flow control message and the content of the control operation message is different from the content of the reverse power flow control message.

In step S <b> 104, the lower management server 300 transmits a stop request message requesting to stop the operation of the distributed power supply 130 to the communication device 110. The communication device 110 stops the operation of the distributed power supply 130 in response to the stop request message.

In the case illustrated in FIG. 4, a case where the stop request message is transmitted to the communication device 110 when the power command message is a reverse power flow control message and the content of the control operation message is different from the content of the reverse power flow control message. explained. However, the embodiment is not limited to this. The lower management server 300 may retransmit the received power command message itself when the content of the control operation message is different from the content of the power command message, regardless of the type of the power command message.

Second, the case where the power command message is a message including a schedule for requesting control of the tidal flow rate or the reverse tidal flow rate will be described with reference to FIG.

As shown in FIG. 5, in step S <b> 201, the lower management server 300 transmits a power command message to the communication device 110.

In step S202, the communication device 110 detects a trigger for transmitting a control operation message. The trigger is, for example, an event that reaches a predetermined timing.

In step S203, the communication device 110 transmits a control operation message to the lower management server 300. The control operation message includes schedule information relating to control of the tidal flow rate or the reverse tidal flow rate.

In step S204, the lower management server 300 verifies whether the content of the control operation message is different from the content of the power command message. Here, the description will be continued assuming that the content of the control operation message is different from the content of the power command message.

In step S205, the lower management server 300 retransmits the power command message to the communication device 110.

In the case illustrated in FIG. 5, the case where the power command message is retransmitted to the communication device 110 when the content of the control operation message is different from the content of the power command message has been described. However, the embodiment is not limited to this. The lower management server 300 may transmit a stop request message to the communication device 110 when the power command message is a reverse power flow control message. Further, when the content of the control operation message and the content of the power command message are the same, the lower management server 300 may not transmit anything to the communication device 110 or may transmit that it is the same.

(Action and effect)
In the embodiment, the communication device 110 transmits a control operation message related to the control of the tidal flow or the reverse tidal flow according to the power command message to the lower management server 300. According to such a configuration, the subordinate management server 300 can verify the tampering or disappearance of the power command message, and the tidal flow or the reverse tidal flow can be set as expected by the power company or the power distribution company. It can be controlled appropriately.

In the embodiment, the lower-level management server 300 belongs to the aggregator entrusted by the power company to manage the tidal flow or the reverse tidal flow of the facility 100. However, according to the configuration described above, the aggregator Can be entrusted to the contractor.

[Modification 1]
Hereinafter, Modification Example 1 of the embodiment will be described. In the following, differences from the embodiment will be described.

In the embodiment, the case where the power command message includes a power flow control message or a reverse power flow control message has been mainly described. In contrast, in the first modification, a case where the power command message is a reverse power flow control message will be described.

In such a case, the control operation message may be information indicating the operating state of the distributed power supply 130. For example, when the distributed power supply 130 is a solar battery, the control operation message may be information indicating a power operation point in MPPT (Maximum Power Point Tracking) control. Alternatively, when the distributed power supply 130 is a storage battery, the control operation message may be an operation mode of the storage battery (rapid charge mode, charge mode, discharge mode, standby mode, test mode, automatic mode, etc.) or an operation operation state of the storage battery (rapid Charging, charging, discharging, discharging state, standby state, effective capacity recalculation processing, etc.). Alternatively, the control operation message may be information for identifying a command message for the distributed power supply 130. Further, various information of the storage battery (AC rated power amount, permission or prohibition of reconnection permission setting, current charge amount, availability of reverse power flow, dischargeable capacity, etc.) may be included as the control operation message.

[Other Embodiments]
Although the present invention has been described with reference to the above-described embodiments, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

In the embodiment, a case has been described in which a trigger for transmitting a control operation message is an event at which a predetermined timing arrives. However, the embodiment is not limited to this. For example, the trigger for transmitting the control operation message may be an event in which the power command message acquired by the communication device 110 expires, and the power command message acquired by the communication device 110 includes a schedule for the next day and after. There may be no event.

In the embodiment, the communication between the upper management server 400 and the lower management server 300 and the communication between the lower management server 300 and the communication device 110 are performed by a method compliant with the Open ADR standard. Transmission of the power command message from the upper management server 400 to the lower management server 300 or the facility 100 can use, for example, an EiReport reporting function of Open ADR2.0 (for example, oadrCreatedReport). The transmission of the control operation message from the facility 100 to the lower-level management server 300 or the higher-level management server 400 can also use, for example, the Open ADR2.0 EiReport reporting function (for example, oadrResponse). That is, the EiReport function of Open ADR2.0 can be used for transmission / reception of the upper management server 400, the lower management server 300, and the facility 100, for example. Further, for example, an openrPoll function of Open ADR2.0 may be used for transmission / reception of the power command message or control operation message of each of the upper management server 400, the lower management server 300, and the facility 100. However, the embodiment is not limited to this. Communication between the lower management server 300 and the communication device 110 may be based on a standard other than the Open ADR standard, or may be based on a unique standard. Therefore, the predetermined message transmitted / received between the lower management server 300 and the communication device 110 may have a predetermined format defined in a standard other than the Open ADR standard.

Note that the entire content of Japanese Patent Application No. 2015-149995 (filed on July 29, 2015) is incorporated herein by reference.

Claims

A power control message for requesting control of a distributed power source installed in a facility via a communication line, a power flow control message for requesting control of power flow from the power system to the facility, or a reverse power flow from the facility to the power system. A receiving unit for receiving a first message including a reverse flow control message for requesting control from the management server;
A communication apparatus comprising: a transmission unit that transmits a second message related to the control of the tidal flow rate or the reverse tidal flow rate according to the first message to the management server.
The first message is a message for requesting real-time control of the tide flow rate or the reverse tide flow rate,
The communication apparatus according to claim 1, wherein the second message includes real-time information related to control of the tidal flow rate or the reverse tidal flow rate.
The communication device according to claim 2, wherein the transmission unit transmits the second message within a predetermined time in response to reception of the first message.
The first message is a message including a schedule for requesting control of the tidal flow or the reverse tidal flow,
The communication apparatus according to claim 1, wherein the second message includes schedule information related to the control of the tidal flow rate or the reverse tidal flow rate.
The communication device according to any one of claims 1 to 4, wherein the transmission unit transmits the second message in response to detection of a trigger.
6. The communication apparatus according to claim 1, wherein the receiving unit receives a result of comparing the content of the second message with the content of the first message.
The said receiving part receives the said 1st message resent from the said management server, when the content of the said 2nd message differs from the content of the said 1st message, The Claim 1 thru | or 6 characterized by the above-mentioned. The communication apparatus in any one.
A control unit for stopping the operation of the distributed power source of the facility when the first message is the reverse power flow control message and the content of the second message is different from the content of the reverse power flow control message; The communication device according to claim 1, wherein
The communication device according to any one of claims 1 to 7, wherein the second message includes information indicating a type of a distributed power source that controls the tidal flow rate or the reverse tidal flow rate.
The management server requests a control of distributed power installed in the facility via a communication line, a power control message that requests control of the tidal flow from the power system to the facility, or from the facility to the power system. Transmitting a first message including a reverse flow control message requesting control of the reverse flow to the communication device;
A communication method comprising: a step B in which the communication device transmits, to the management server, a second message related to the control of the tidal flow or the reverse tidal flow performed in response to the first message.
The communication method according to claim 10, further comprising a step of retransmitting the first message to the communication device when the content of the second message is different from the content of the first message. .
When the first message is the reverse power flow control message and the content of the second message is different from the content of the reverse power flow control message, the management server stops the operation of the distributed power source of the facility. The communication method according to claim 10, further comprising a step of transmitting a requested stop request message to the communication device.