JP6718600B2 - Power management server, power management method, and power management system - Google Patents

Description

The present invention relates to a power management server that transmits a power control message, a power management method, and a power management system.

In recent years, power suppression messages such as a message requesting suppression of a tidal flow from the power system to the facility and a message requesting suppression of a reverse tidal flow from the facility to the power system are known. For example, such a power curtailment message is transmitted based on the power supply and demand balance of the power system (for example, Patent Documents 1 and 2).

JP, 2013-169104, A JP, 2014-128107, A

By the way, since the power supply and demand balance is predicted in advance, the immediacy required for the power curtailment message transmitted based on such power supply and demand balance is not high.

As a result of earnest studies under such a background, the inventors have found that the power system cannot be sufficiently stabilized only by the power suppression message having relatively low immediacy.

Then, this invention is made in order to solve the subject mentioned above, and an object of this invention is to provide the power management server, the power management method, and the power management system which can stabilize a power grid. ..

A power management server according to an embodiment includes a message requesting control of a distributed power source installed in a facility, a message requesting control of a tidal flow rate from a power system to the facility, and a reverse flow rate from the facility to the power system. And a transmission unit for transmitting a power control message including at least one of the messages requesting control of. The transmission unit transmits a first power control message having a first immediacy as the power control message based on a power supply and demand balance of the power system. The transmission unit transmits, as the power control message, a second power control message having a second immediacy higher than a first immediacy based on at least one of a voltage value and a frequency of the power system.

A power management method according to a second feature is a message requesting control of a distributed power source installed in a facility, a message requesting control of a tidal flow from the power system to the facility, and a reverse request from the facility to the power system. The method comprises a step A of transmitting a power control message including at least one of the messages requesting control of the tidal flow rate. The step A includes at least one of a step A1 of transmitting a first power control message having a first immediacy as the power control message based on a power supply and demand balance of the power system, and a voltage value and a frequency of the power system. A second step of transmitting, as the power control message, a second power control message having a second immediacy higher than the first immediacy.

A power management system according to a third feature is a message requesting control of a distributed power source installed in a facility, a message requesting control of a tidal flow from the power system to the facility, and a reverse operation from the facility to the power system. A transmission unit for transmitting a power control message including at least one of the messages requesting control of the tidal flow rate is provided. The transmission unit transmits a first power control message having a first immediacy as the power control message based on a power supply and demand balance of the power system. The transmission unit transmits, as the power control message, a second power control message having a second immediacy higher than a first immediacy based on at least one of a voltage value and a frequency of the power system.

According to one aspect, it is possible to provide a power management server, a power management method, and a power management system capable of stabilizing a power system.

FIG. 1 is a diagram showing a power management system 1 according to the embodiment. FIG. 2 is a diagram showing the lower management server 300 according to the embodiment. FIG. 3 is a diagram showing a power management method according to the embodiment. FIG. 4 is a diagram illustrating a power management method according to the first modification. FIG. 5 is a diagram illustrating a power management method according to the third modification. FIG. 6 is a diagram illustrating a power management method according to the third modification.

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

However, it should be noted that the drawings are schematic and the ratio of each dimension may be different from the actual one. Therefore, specific dimensions should be determined in consideration of the following description. In addition, it is needless to say that the drawings include portions having different dimensional relationships or ratios.

[Embodiment]
(Power management system)
The power management system according to the embodiment will be described below. FIG. 1 is a diagram showing a power management system 1 according to the embodiment.

As illustrated 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 an EMS 110, a load 120, and a distributed power source 130. The EMS 110 is an apparatus (Energy Management System) that manages the electric power of the equipment provided in the facility 100. The load 120 is a facility that consumes electric power. The load 120 includes equipment such as a refrigerator, a freezer, lighting, an air conditioner, and a television. The load 120 may include a single piece of equipment or a plurality of pieces of equipment. The distributed power source 130 is a facility that generates electric power or stores electric power. The distributed power source 130 includes facilities such as a solar cell, a fuel cell, and a storage battery, for example. The distributed power source 130 may include a single piece of equipment or a plurality of pieces of equipment.

In the embodiment, the facility 100A, the facility 100B, and the facility 100C are exemplified as the facility 100. The facility 100A, the facility 100B, and the facility 100C have the same configuration. The facilities 100A to 100C are consumer facilities.

The network 200 is a communication line that connects the facility 100 and the lower management server 300. The network 200 is, for example, the Internet or a dedicated line. The network 200 is provided by a provider with which each facility 100 has a contract.

The lower management server 300 is a server that belongs to an aggregator such as a power distribution business. The aggregator is a business that manages the tidal flow rate or the reverse tidal flow rate of the facility 100 that contracts with the aggregator.

In the embodiment, the lower management server 300A and the lower management server 300B are exemplified as the lower management server 300. The lower management server 300A and the lower management server 300B have the same configuration. The upper management server 400 and the lower management server 300 may be integrated.

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 aggregator with the management of the tidal flow rate or the reverse tidal flow rate of the facility 100.

In the embodiment, the higher-level management server 400 transmits a power flow suppression message (for example, DR; Demand Response) requesting suppression of the tide flow rate (power supply amount) from the power system to the facility 100. The upper management server 400 transmits a reverse power flow suppression message requesting suppression of the reverse power flow rate from the facility 100 to the power system. In the embodiment, the power flow suppression message and the reverse power flow suppression message are collectively referred to as a power suppression message. The reverse power flow suppression message may be considered as an output suppression message that instructs the output suppression of the distributed power source.

Here, as the format of the power flow suppression message and the reverse power flow suppression message, a unique format may be used, or a format that conforms to an automatic demand response (ADR; Automated Demand Response) may be used. The communication between the higher-level management server 400 and the lower-level management server 300 and the communication between the lower-level management server 300 and the facility 100 may be performed by a method based on the Open ADR standard.

(Power management server)
The power management server according to the embodiment will be described below. Here, the lower management server 300 is illustrated as an example of the power management server. However, the power management server may be the higher-level management server 400.

As shown in FIG. 2, the lower management server 300 has a communication unit 310, a management unit 320, and a control unit 330.

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 curtailment message including a power flow curtailment message or a reverse flow curtailment message from the upper management server 400. The communication unit 310 transmits a power suppression message including a power flow suppression message or a reverse power flow suppression message to the facility 100 via the network 200 (communication line). Since the management of the tidal flow rate or reverse tidal flow rate of the facility 100 is entrusted to the aggregator (lower management server 300), the content of the power suppression message transmitted to the facility 100 is the content of the power suppression message received from the upper management server 400. May be different from.

In the embodiment, the communication unit 310 transmits the first power curtailment message having the first immediacy as the power curtailment message based on the power supply and demand balance of the power system. The power saving message having immediacy means immediacy from when the power saving message is received until the power saving message is executed. The communication unit 310 transmits a second power curtailment message having a second immediacy, which is higher than the first immediacy, as a power curtailment message, based on at least one of the voltage value and the frequency of the power system. The second power curtailment message having the second immediacy higher than the first immediacy means that the time from the reception of the second power curtailment message to the execution is shorter than the time from the reception of the first power curtailment message to the execution. It means that.

Therefore, when the contents of the first power saving message and the second power saving message are different, the contents of the second power saving message have priority over the contents of the first power saving message. Note that the contents of the first power suppression message and the second power suppression message may be the same, and in this case, it can be confirmed that there is no change.

The first power curtailment message is transmitted, for example, according to the supply and demand adjustment plan created based on the power supply and demand balance of the power system. The first immediacy is, for example, time, day, or month level immediacy.

The second power curtailment message is transmitted, for example, according to the supply and demand adjustment plan reviewed based on at least one of the voltage value and the frequency of the power system. The second immediacy may be shorter than the first immediacy, for example, immediacy at the second, minute or hour level.

The management unit 320 is configured by a storage medium such as a non-volatile memory or/and an HDD, and manages one or more facilities 100 included in the plurality of facilities 100 connected to the power system.

The management unit 320 may manage information about the facilities provided in the facility 100. The information about the equipment includes the type of the equipment, the specifications of the equipment, and the like. The type of facility is the type of distributed power source 130 such as a solar cell, a fuel cell, or a storage battery, and the type of load 120 such as an air conditioner, a refrigerator, or a freezer. Facility specifications include rated output of solar cells, rated output of fuel cells, storage capacity of storage batteries, rated input/output of storage batteries (rated power, rated voltage, rated current, etc.), air conditioner power consumption, refrigerator power consumption, freezer Power consumption.

The above-described first power suppression message and second power suppression message may be transmitted to the facility 100 managed by the management unit 320.

The control unit 330 includes a CPU, a memory, and the like, and controls the communication unit 310 and the management unit 320.

As a first stage, the control unit 330 formulates a supply and demand adjustment plan based on the power supply and demand balance of the power system, and instructs the communication unit 310 to transmit the first power suppression message. As the second stage, the control unit 330 reviews the supply and demand adjustment plan based on at least one of the voltage value and the frequency of the power system, and instructs the communication unit 310 to transmit the second power curtailment message.

It may be necessary to review the supply and demand adjustment plan from the following viewpoints. For example, even if the first power suppression message is transmitted, there may be a case where the readjustment of the tidal flow rate or the reverse tidal flow rate performed by each facility 100 is performed. For the readjustment of the tidal flow rate or the reverse flow rate, for example, it is assumed that the suppression of the tidal flow rate or the reverse flow rate is insufficient. Alternatively, there may be a case where the tidal flow rate or the reverse tidal flow rate executed by each facility 100 is excessively suppressed in response to the transmission of the first power restriction message. In these cases, the voltage value or frequency of the power system may become unstable. Therefore, in order to stabilize the voltage value or frequency of the electric power system, it may be necessary to review the supply and demand adjustment plan and send the second electric power curtailment message.

Here, the power supply and demand balance of the power system may be acquired from the supply and demand balance information received from the facility 100 managed by the management unit 320. The supply and demand balance information includes, for example, information indicating the balance between the power consumption of the load 120 provided in the facility 100 and the output power of the distributed power source 130. The supply and demand balance information may be current performance information or future prediction information. However, the embodiment is not limited to this. The power supply and demand balance of the power system may be managed by the upper management server 400, and the power supply and demand balance of the power system may be acquired from the information received from the higher management server 400.

At least one of the voltage value and the frequency of the power system may be acquired by the power system information received from the facility 100 managed by the management unit 320. The power system information includes information indicating at least one of a voltage value and a frequency of the power system to which the facility 100 is connected. The power system information may be current performance information instead of future prediction information.

However, the embodiment is not limited to this. At least one of the voltage value and the frequency of the power system may be managed by the upper management server 400, and at least one of the voltage value and the frequency of the power system may be acquired by the information received from the higher management server 400. ..

Although not particularly limited, the first power suppression message may be a message transmitted before the tidal flow rate or the reverse flow rate suppression period. The second power suppression message may be a message transmitted during the suppression period of the tidal flow rate or the reverse flow rate. In addition, both the first power suppression message and the second power suppression message may be transmitted before the suppression period or may be transmitted during the suppression period.

(Power management method)
The power management method according to the embodiment will be described below. In FIG. 3, facilities 100A to 100D are illustrated as the consumer facility 100.

As shown in FIG. 3, in step S101, each facility 100 transmits the supply and demand balance information to the lower management server 300.

In step S102, the lower management server 300 transmits a report message including supply and demand balance information to the upper power server 400.

In step S103, the upper management server 400 determines, based on the report message received from one or more lower management servers 300, whether the power supply and demand balance of the power system needs to be adjusted. The upper management server 400 (an example of an external server in the embodiment) sends an adjustment request message requesting adjustment of the power supply and demand balance of the power system, when the power supply and demand balance of the power system needs to be adjusted. Send to.

In step S104, the lower management server 300 formulates a supply and demand adjustment plan based on the power supply and demand balance of the power system in response to the reception of the adjustment request message.

In step S105, the lower-level management server 300 transmits the first power restriction message to each facility 100 based on the supply and demand adjustment plan formulated in step S104.

In step S106, each facility 100 starts suppression control based on the first power restriction message. The tidal flow rate suppression control is, for example, control for reducing the power consumption of the load 120 or control for increasing the output of the distributed power source 130. The reverse flow rate suppression control is, for example, control for increasing the power consumption of the load 120 and control for decreasing the output of the distributed power source 130.

In step S107, each facility 100 transmits the power system information to the lower management server 300.

In step S108, the lower management server 300 reviews the supply and demand adjustment plan based on at least one of the voltage value and the frequency of the power system.

In step S109, the lower-level management server 300 transmits the second power suppression message to each facility 100 based on the supply and demand adjustment plan reviewed in step S104.

In step S110, each facility 100 corrects the suppression control based on the second power restriction message.

(Action and effect)
In the embodiment, the lower-level management server 300 transmits the first power curtailment message having the first immediacy based on the power supply and demand balance of the power system, and at least one of the voltage value and the frequency of the power system. Based on this, the second power curtailment message having a second immediacy higher than the first immediacy is transmitted. With this, it is possible to appropriately avoid the instability of the voltage value or the frequency of the power system while appropriately suppressing the tidal flow rate or the reverse power flow rate.

[Modification 1]
Hereinafter, a first modification of the embodiment will be described. In the following, differences from the embodiment will be mainly described.

In Modification Example 1, the lower-level management server 300 receives the facility configuration information from each facility. The facility configuration information includes, for example, power contract information of the facility 100, personnel information of the facility 100, and facility information of the facility 100.

The contract information may include information indicating whether or not there is a contract for coordinating adjustment of the power supply and demand balance of the electric power system, and may include information indicating a power charge plan. The personnel information may include information indicating the personnel used in the facility 100, or may include information indicating the behavior pattern of the personnel. The facility information may include information indicating the type of facility (load 120 and distributed power source 130) provided in the facility 100, or may include information indicating the specifications of the facility.

The lower-level management server 300 may receive the facility configuration information from the facility 100 managed by the management unit 320, similarly to the supply and demand balance information.

(Power management method)
The power management method according to the second modification will be described below. In FIG. 4, facilities 100A to 100D are illustrated as the consumer facility 100. In FIG. 4, similar step numbers are assigned to processes similar to those in FIG. Description of the same processing as in FIG. 3 is omitted.

In step S101A, in step S101, each facility 100 transmits the supply and demand balance information and the facility configuration information to the lower management server 300. In step S102, the lower management server 300 may send a report message including the supply and demand balance information and the facility configuration information to the upper management server.

The facility configuration information may be used for transmitting the adjustment request message in step S103. The facility configuration information may be used for formulating the supply and demand adjustment plan in step S104.

In FIG. 4, the facility configuration information is transmitted together with the supply and demand balance information, but the first modification is not limited to this. The facility configuration information may be transmitted separately from the supply and demand balance information. The facility configuration information may be transmitted to the lower management server only once after the lower management server 300 starts managing the facility 100.

[Modification 2]
Hereinafter, a second modification of the embodiment will be described. In the following, differences from the embodiment and the first modification will be mainly described.

In the second modification, the facility 100 includes a first type facility having a contract for coordinating the adjustment of the power supply and demand balance of the power system, and a second type facility not having such a contract. In such a case, the lower-level management server 300 (communication unit 310) transmits the power suppression message to the second type facility when the target suppression amount is not achieved by the transmission of the power suppression message to the first type facility.

Here, the target suppression amount may be set based on the adjustment request message received from the upper management server 400. Type 1 facilities are obliged to cooperate in adjusting the power supply and demand balance of the power system, but can receive services such as discounting of electricity charges. The second-type facilities are not obliged to cooperate in adjusting the power supply and demand balance of the power system, but cannot receive services such as discounting of electricity charges. However, when the second type facility suppresses the tidal flow rate or the reverse tidal flow rate based on the power restriction message, it may receive an incentive to suppress the tidal flow rate or the reverse tidal flow rate.

[Modification 3]
Hereinafter, a modified example 3 of the embodiment will be described. In the following, differences from the embodiment will be mainly described.

In Modification Example 3, each facility 100 transmits the suppression contribution information to the lower management server 300. The suppression contribution information includes target suppression information, equipment operation information, participation information, suppression burden information, and the like. Each facility 100 may transmit, among the suppression contribution information, information used for formulating a supply and demand adjustment plan before the suppression period of the tidal flow rate or the reverse tidal flow rate. Each facility 100 may transmit the information used for determining the incentive among the suppression contribution information after the suppression period of the tidal flow rate or the reverse tidal flow rate.

The target suppression information includes information indicating the target value of the tidal flow rate or the reverse tidal flow rate that the facility 100 suppresses in response to the reception of the power curtailment message. The target value may be represented by an absolute value (kWh) or a relative value (%). The relative value may be a ratio of the amount of power during the suppression period to the amount of power before the suppression period. It may be self-reported by the facility 100. The equipment operation information includes information indicating the operation state of the equipment (the load 120 and the distributed power supply 130) provided in the facility 100. The operating state may be information indicating the energy saving level of the load 120 before the tidal flow suppression period or information indicating the output suppression level of the distributed power supply 130 before the reverse tidal flow suppression period. The contents of the energy saving level and the suppression level may be predetermined between the facility 100 and the lower management server 300. The participation information includes information indicating whether or not there is an intention to participate in the tidal flow rate or the reverse tidal flow rate. The suppression burden information is information indicating the burden on the facility 100 due to the suppression of the tidal flow rate or the reverse tidal flow rate. The burden information may include, for example, information indicating a QOL (Quality of Life) decrease level due to the suppression of the tidal flow rate, and the deterioration of the distributed power source 130 (particularly, the storage battery) due to the suppression of the tidal flow rate or the reverse tidal flow rate may be included. The information may include information indicating the amount of greenhouse gas discharged from the distributed power source 130 as the tidal flow rate or the reverse flow rate is suppressed, and information indicating the number of times the tidal flow rate or the reverse flow rate is suppressed during a predetermined period. It may include and may include information indicating additional costs or lost benefits incurred by controlling the tidal or reverse flow.

In Modification Example 3, each facility 100 transmits the record information to the lower management server 300 after the suppression period of the tidal flow rate or the reverse tidal flow rate. The record information is information indicating the suppression amount of the tidal current or the reverse tidal current, and may be represented by an absolute value (kWh) or a relative value (%). The relative value may be a ratio of the amount of power during the suppression period to the amount of power before the suppression period.

The lower management server 300 may create a supply and demand adjustment plan based on the suppression contribution information. For example, the lower-level management server 300 may send a power suppression message requesting a large suppression amount to the facility 100 that presents a large target value. The lower-level management server 300 may determine a controllable room based on the facility operation information, and may transmit a power suppression message requesting a large suppression amount to the facility 100 having a large room. The lower-level management server 300 may determine whether or not there is an intention to participate based on the participation information, and preferentially transmit the power suppression message to the facility 100 that has the intention to participate. The lower-level management server 300 may determine the level of burden on the facility 100 based on the restraint burden information, and may send a power restraint message requesting a large restraint amount to the facility 100 having a lower burden level.

The lower-level management server 300 may determine the incentive to be given to the facility 100 based on at least one of the suppression contribution information and the performance information. For example, the lower-level management server 300 may decide to give a large incentive to the facility 100 having a small difference between the target value and the actual value. The lower-level management server 300 may determine the level of the burden on the facility 100 based on the restraint burden information, and may decide to give a large incentive to the facility 100 having a higher burden level.

(Power management method)
The power management method according to the third modification will be described below. In FIG. 5, facilities 100A to 100D are illustrated as the consumer facility 100.

In FIG. 5, the determination of the incentive is mainly described, and therefore the formulation of the supply and demand adjustment plan is omitted. However, each facility 100 may transmit the information, which is used for formulating the supply and demand adjustment plan, of the suppression contribution information before the tidal flow rate or the reverse tidal flow rate suppression period (for example, step S101 illustrated in FIG. 3 ). The lower-level management server 300 may create a supply and demand adjustment plan based on the suppression contribution information (for example, step S104 shown in FIG. 3).

As shown in FIG. 5, in step S201, each facility 100 ends the suppression of the tidal flow rate or the reverse tidal flow rate.

In step S202, each facility 100 transmits the performance information to the lower management server 300.

In step S203, the lower management server 300 determines an incentive to be given to the facility 100 based on at least one of the suppression contribution information and the performance information.

[Modification 4]
Hereinafter, Modification Example 4 of the embodiment will be described. In the following, differences from the embodiment will be mainly described.

In the embodiment, the lower management server 300 reviews the supply and demand adjustment plan based on at least one of the voltage value and the frequency of the power system. On the other hand, in Modification 4, the supply and demand adjustment plan is reviewed based on the suppression status of the tidal flow rate or the reverse tidal flow rate executed by transmitting the first power restriction message.

In Modification Example 4, each facility 100 transmits a suppression status message indicating the suppression status of the tide flow rate or the reverse flow rate to the lower management server 300 during the suppression period of the tide flow rate or the reverse flow rate. The suppression status may be represented by the absolute value (kWh) of the suppression amount of the tidal current or the reverse power flow, or may be represented by the relative value (%) of the suppression amount of the tidal current or the reverse power flow. The relative value may be a ratio of the current suppression amount to the suppression amount requested by the first power curtailment message (that is, the achievement rate).

As described above, it may be necessary to review the supply and demand adjustment plan from the following viewpoints. For example, there may be a case where the suppression of the tidal flow rate or the reverse tidal flow rate performed by each facility 100 is insufficient even if the first power restriction message is transmitted. Alternatively, there may be a case where the tidal flow rate or the reverse tidal flow rate executed by each facility 100 is excessively suppressed in response to the transmission of the first power restriction message. The lower management server 300 can determine whether the amount of suppression is insufficient or excessive by the suppression status message.

The lower management server 300 may review the supply and demand adjustment plan based on the feasibility information. The feasibility information is information indicating the feasibility of the curtailment amount requested by the first power curtailment message.

For example, the feasibility information may include information indicating the types of facilities (load 120 and distributed power source 130) provided in the facility 100. When the load 120 that contributes to the suppression of the tidal flow rate is an air conditioner, a refrigerator, or a refrigerator, the suppression of the tidal flow rate may be relaxed from the viewpoint of maintaining QOL (Quality of Life) or maintaining the temperature inside the refrigerator. is there. When the distributed power source 130 that contributes to the suppression of the tidal flow rate includes a solar cell, the tidal flow rate may be insufficient depending on weather conditions. When the distributed power source 130 that contributes to the suppression of the tidal flow rate includes a storage battery, the tidal flow rate may be insufficient due to the remaining power storage amount. When the distributed power source 130 that contributes to the suppression of the reverse flow rate includes a solar cell, the reverse flow rate may be excessive depending on weather conditions. When the distributed power source 130 that contributes to the suppression of the reverse flow rate includes a storage battery, the reverse flow rate may become excessive depending on the power charge and the remaining power storage amount.

The feasibility information may include information indicating the past suppression record for the power suppression message. The suppression record may be, for example, the achievement rate of the suppression control for the power suppression message, or the time from the reception of the power suppression message to the start of the suppression control (responsiveness).

When the suppression amount is excessive during the suppression period, the lower-level management server 300 preferentially transmits a suppression mitigation message instructing the suppression of the suppression amount to the facility 100 having a low possibility of realizing the suppression amount. When the suppression amount is insufficient during the suppression period, the lower-level management server 300 preferentially transmits a suppression enhancement message instructing the enhancement of the suppression amount to the facility 100 with a high possibility of realizing the suppression amount. The suppression mitigation message and the suppression enhancement message may be considered the second power suppression message described above.

(Power management method)
The power management method according to the fourth modification will be described below. In FIG. 6, facilities 100A to 100D are illustrated as the consumer facility 100. In FIG. 6, the same step numbers are assigned to the same processes as in FIG. Description of the same processing as in FIG. 3 is omitted.

As shown in FIG. 6, in step S107A, each facility 100 transmits a suppression status message to the lower management server 300.

In step S108A, the lower-level management server 300 reviews the supply and demand adjustment plan based on the suppression status message. The lower-level management server 300 may review the supply and demand adjustment plan based on the feasibility information when determining that the suppression amount is insufficient or excessive.

In step S109A, the subordinate management server 300 transmits the second power suppression message to each facility 100 based on the supply and demand adjustment plan reviewed in step S104. The second power suppression message is a suppression mitigation message or a suppression enhancement message.

In Modification Example 4, the feasibility information may be received from the facility 100 or may be managed in advance by the lower management server 300. The feasibility information may be obtained from an information source other than the facility 100.

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

Although not specifically mentioned in the embodiment, the power curtailment message may include information that prompts a user action for curbing the tidal flow rate or the reverse flow rate. For example, when urging the personnel of the facility 100 to go out in order to suppress the tidal flow rate, the power suppression message may include advertisement information of stores in the vicinity of the facility 100. In order to guide the EV (Electric Vehicle), which functions as a storage battery in suppressing the reverse flow rate, to the facility 100, the power suppression message may include information indicating an incentive for suppressing the reverse flow rate. In these cases, the power curtailment message may be transmitted to a terminal (smartphone, tablet, or the like) owned by the personnel of the facility 100.

In the embodiment, the suppression of the tidal flow rate or the reverse tidal flow rate has been mainly described. That is, the power control message is illustrated as the power control message. However, the embodiment is not limited to this. Specifically, the embodiment is also applicable to a system (VPP; Virtual Power Plant) using a distributed power source provided in the facility 100. In such a case, the power suppression message may be read as a message requesting control of the distributed power sources installed in the facility 100. Further, the term “suppression” may be read as “control”. That is, the embodiment can be applied to the case of increasing the tidal flow rate or the reverse tidal flow rate.

1... Power management system, 100... Facility, 110... EMS, 120... Load, 130... Distributed power supply, 200... Network, 300... Subordinate management server, 310... Communication unit, 320... Management unit, 330... Control unit, 400... Upper management server

Claims (13)

At least a message requesting the installation output suppression of the dispersed power supply to the facility, from the message and the facility to request power flow amount of suppression to the facility from the electric power system of a message requesting a reverse flow of suppression of the electric power system A transmitter for transmitting a power curtailment message including any one of
The transmitter is
Based on the power supply-demand balance of the power system, it transmits a first power restriction message as the power restriction message,
When the amount of suppression is excessive in the suppression situation of the tidal flow rate or the reverse flow rate executed by the transmission of the first power suppression message, the facility is instructed to mitigate the suppression amount when the suppression amount is low in feasibility. A second power curtailment message is transmitted as the power curtailment message, and when the curtailment amount is insufficient, a second power curtailment message for instructing the facility that has a high possibility of realizing the curtailment amount to strengthen the curtailment amount is transmitted. A power management server that sends as a suppress message. The power management server according to claim 1, further comprising a control unit that determines the feasibility of the facility based on a type of distributed power source provided in the facility. The power management server according to claim 1, further comprising a control unit that determines the feasibility of the facility based on a past restraint record of the facility for the power restraint message. A management unit that manages one or more facilities included in a plurality of facilities connected to the power system;
The power management server according to claim 1, wherein the transmission unit transmits the first power suppression message and the second power suppression message to a facility managed by the management unit. .. The power management server according to claim 4, further comprising: a reception unit that receives information indicating a power supply and demand balance of the facility from the facility managed by the management unit. The receiving unit that receives information indicating at least one of a voltage value and a frequency of the power system to which the facility is connected from the facility managed by the management unit. Power management server. A receiving unit that receives an adjustment request message requesting adjustment of the power supply and demand balance of the power system from an external server;
The power management server according to claim 1, wherein the transmission unit transmits the first power reduction message and the second power reduction message in response to receiving the adjustment request message. The facility includes a first type facility having a contract for coordinating adjustment of a power supply and demand balance of the power system, and a second type facility not having the contract,
And the transmission unit, when the target suppression amount by the transmission of the power suppression message for said first type facility is not achieved, and transmits the power suppression message to the second type facilities, any of claims 1 to 7 The power management server described in Crab. A management unit that manages one or more facilities included in a plurality of facilities connected to the power system;
The power management server according to claim 8, wherein the transmission unit transmits the power suppression message based on facility configuration information received from a facility managed by the management unit. The power management server according to claim 9, wherein the facility configuration information is information indicating at least one of presence or absence of the contract, a facility provided in the facility, and a configuration of personnel who use the facility. At least a message requesting the installation output suppression of the dispersed power supply to the facility, from the message and the facility to request power flow amount of suppression to the facility from the electric power system of a message requesting a reverse flow of suppression of the electric power system Comprising step A of transmitting a power curb message including any one of:
The step A is
Based on the power supply-demand balance of the electric power system, the steps A1 to transmit the first power restriction message as the power restriction message,
When the amount of suppression is excessive in the suppression situation of the tidal flow rate or the reverse flow rate executed by the transmission of the first power restriction message, the facility is instructed to mitigate the suppression amount if the suppression amount is low. A second power curtailment message is transmitted as the power curtailment message, and when the curtailment amount is insufficient, a second power curtailment message for instructing a facility with a high possibility of realizing the curtailment amount to strengthen the curtailment amount is transmitted. Transmitting a suppression message as step A2. At least a message requesting the installation output suppression of the dispersed power supply to the facility, from the message and the facility to request power flow amount of suppression to the facility from the electric power system of a message requesting a reverse flow of suppression of the electric power system A transmitter for transmitting a power curtailment message including any one of
The transmitter is
Based on the power supply-demand balance of the power system, it transmits a first power restriction message as the power restriction message,
When the amount of suppression is excessive in the suppression situation of the tidal flow rate or the reverse flow rate executed by the transmission of the first power restriction message, the facility is instructed to mitigate the suppression amount if the suppression amount is low. A second power curtailment message is transmitted as the power curtailment message, and when the curtailment amount is insufficient, a second power curtailment message for instructing a facility with a high possibility of realizing the curtailment amount to strengthen the curtailment amount is transmitted. A power management system that sends as a suppression message. At least a message requesting the installation output suppression of the dispersed power supply to the facility, from the message and the facility to request power flow amount of suppression to the facility from the electric power system of a message requesting a reverse flow of suppression of the electric power system A transmitter for transmitting a power curtailment message including any one of
The transmitter is
A first power curtailment message having a first immediacy executed at a first time is transmitted as the power curtailment message based on a power supply and demand balance of the power system,
A second power curtailment message having a second immediacy that is executed in a second time shorter than the first time is transmitted as the power curtailment message based on at least one of a voltage value and a frequency of the power system. Then
When the amount of suppression is insufficient in the suppression state of the tidal flow rate or reverse flow rate executed by the transmission of the first power suppression message, the transmission unit reduces the number of times of suppression of the tidal flow rate or reverse flow rate in a predetermined period. A power management server that transmits the second power suppression message that instructs the facility to strengthen the suppression amount.

Images