JP2017209013A - Management system, control device, and control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to properly control outputs of distributed power supplies.SOLUTION: The management system includes: a plurality of apparatuses including distributed power supplies for outputting power; and a control device 200, for communicating with the plurality of apparatuses with a predetermined protocol. The control device 200 transmits a signal for specifying a maximum output power amount of power to be output to the distributed power supplies per unit time with the predetermined protocol.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a management system, a control device, and a control method in a consumer having a plurality of different types of distributed power supplies.

  Conventionally, distributed power sources such as a solar cell device, a fuel cell device, and a storage battery device are known (for example, Patent Document 1).

  A solar cell device is a device that generates power using sunlight. A fuel cell device is a device that generates power using fuel such as gas. The storage battery device is a device that accumulates electric power. The solar cell device is controlled by, for example, an MPPT (Maximum Power Point Tracking) method. The fuel cell device and the storage battery device are controlled so as to follow the power consumption of the load (load following control). Specifically, in load follow-up control, the output of the distributed power supply is controlled so that the current value detected by a current sensor provided on the system side of the load becomes a target current value (for example, “0”). .

JP 2002-152976 A

  Incidentally, the amount of output power that can change per unit time (hereinafter, response speed) varies among a plurality of distributed power sources.

  Accordingly, the present invention has been made to solve the above-described problem, and an object thereof is to provide a management system, a control device, and a control method that can appropriately control the output of a distributed power source. To do.

  A management system according to a first feature includes a plurality of devices including a distributed power source that outputs power, and a control device that communicates with the plurality of devices using a predetermined protocol. Then, a signal specifying the maximum output power amount per unit time of the output power is transmitted by the predetermined protocol.

  The control device according to the second feature is a control device that communicates with a plurality of devices including a distributed power source that outputs power using a predetermined protocol, and outputs the maximum output power per unit time to the distributed power source. A control unit is provided that transmits a signal designating the amount of power using the predetermined protocol.

  A control method according to a third feature is a control method in a control device that controls a plurality of devices including a distributed power source that outputs power by communicating with a predetermined protocol, and the control device controls the distributed power source. And a step of transmitting a signal designating a maximum output power amount per unit time of output power using the predetermined protocol.

  According to the present invention, it is possible to provide a management system, a control device, and a control method that can appropriately control the output of a distributed power source.

FIG. 1 is a diagram illustrating an energy management system according to an embodiment. Drawing 2 is a figure showing a consumer concerning an embodiment. FIG. 3 is a block diagram illustrating the EMS according to the embodiment. FIG. 4A is a diagram for explaining the maximum output power amount that can be increased per unit time. FIG. 4B is a diagram illustrating an example of transition of output power of each of the storage battery device and the fuel cell device with respect to a change in power consumption of the load. FIG. 5A is a diagram for explaining an example of limiting the amount of output power that can be increased per unit time. FIG.5 (b) shows an example of transition of each output electric power of a storage battery apparatus and a fuel cell apparatus with respect to the change of the power consumption of a load, when the output electric energy which can be increased per unit time in a storage battery apparatus is restrict | limited. FIG. FIG. 6 is a flowchart illustrating a control method according to the embodiment. FIG. 7A is a diagram for explaining a cycle (control cycle) for performing load following control. FIG. 7B is a diagram for explaining an example of adjusting the cycle for performing the load follow-up control. FIG. 8 is a flowchart illustrating a control method according to the modified example of the embodiment.

  Hereinafter, an energy management system according to an embodiment of the present invention 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 and the like are different 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 and ratios are included between the drawings.

[Outline of Embodiment]
An energy management system according to an embodiment includes a plurality of distributed power sources having different response speeds and a control device that controls the plurality of distributed power sources, and causes output power of the plurality of distributed power sources to follow power consumption of a load. Perform load following control. The energy management system includes a control unit that controls a response speed of at least one of the plurality of distributed power sources to be slower than a response speed of other distributed power sources.

  In this way, by controlling the response speed of at least one of the plurality of distributed power supplies, it is possible to prevent only the distributed power supply having a high response speed from operating. The output can be appropriately controlled. Moreover, since it is not necessary to change the load which a distributed power supply should supply electric power among several distributed power supplies, the expansion of the scale of a distribution board can be suppressed. Therefore, it is possible to appropriately control the outputs of the plurality of distributed power sources while suppressing the expansion of the distribution panel.

[Embodiment]
(Energy management system)
Below, the energy management system which concerns on this embodiment is demonstrated. FIG. 1 is a diagram showing an energy management system 100 according to the present embodiment.

As shown in FIG. 1, the energy management system 100 includes a customer 10, a CEMS 20, a substation 30, a smart server 40, and a power plant 50. The customer 10, the CEMS 20, the substation 30 and the smart server 40 are connected by a network 60.

  The consumer 10 includes, for example, a power generation device and a power storage device. The power generation device is a device that outputs electric power using fuel gas, such as a fuel cell. The power storage device is a device that stores electric power, such as a secondary battery.

  The consumer 10 may be a detached house or an apartment house such as a condominium. Alternatively, the customer 10 may be a store such as a convenience store or a supermarket, a commercial facility such as a building, or a factory.

  In the present embodiment, a customer group 10 </ b> A and a customer group 10 </ b> B are configured by a plurality of consumers 10. The consumer group 10A and the consumer group 10B are classified by, for example, a geographical area.

  The CEMS 20 controls interconnection between the plurality of consumers 10 and the power system. The CEMS 20 may be referred to as a CEMS (Cluster / Community Energy Management System) in order to manage a plurality of consumers 10. Specifically, the CEMS 20 disconnects between the plurality of consumers 10 and the power system at the time of a power failure or the like. On the other hand, the CEMS 20 interconnects the plurality of consumers 10 and the power system when power is restored.

  In the present embodiment, CEMS 20A and CEMS 20B are provided. For example, the CEMS 20A controls interconnection between the customer 10 included in the customer group 10A and the power system. For example, the CEMS 20B controls interconnection between the customer 10 included in the customer group 10B and the power system.

  The substation 30 supplies electric power to the plurality of consumers 10 via the distribution line 31. Specifically, the substation 30 steps down the voltage received from the power plant 50.

  In the present embodiment, a substation 30A and a substation 30B are provided. For example, the substation 30A supplies power to the consumers 10 included in the consumer group 10A via the distribution line 31A. For example, the substation 30B supplies power to the consumers 10 included in the consumer group 10B via the distribution line 31B.

  The smart server 40 manages a plurality of CEMSs 20 (here, CEMS 20A and CEMS 20B). The smart server 40 also manages a plurality of substations 30 (here, the substation 30A and the substation 30B). In other words, the smart server 40 comprehensively manages the customers 10 included in the customer group 10A and the customer group 10B. For example, the smart server 40 has a function of balancing the power to be supplied to the consumer group 10A and the power to be supplied to the consumer group 10B.

  The power plant 50 generates power using thermal power, wind power, hydraulic power, nuclear power, and the like. The power plant 50 supplies power to the plurality of substations 30 (here, the substation 30A and the substation 30B) via the power transmission line 51.

  The network 60 is connected to each device via a signal line. The network 60 is, for example, the Internet, a wide area network, a narrow area network, a mobile phone network, or the like.

(Customer)
Below, the consumer which concerns on this embodiment is demonstrated. FIG. 2 is a diagram illustrating details of the customer 10 according to the present embodiment.

  As shown in FIG. 2, the customer 10 includes a distribution board 110, a load 120, a storage battery device 140, a fuel cell device 150, a hot water storage device 160, and an EMS 200. In the present embodiment, the storage battery device 140 and the fuel cell device 150 correspond to a plurality of distributed power sources. The EMS 200 corresponds to a control device.

  Distribution board 110 is connected to distribution line 31 (system). Distribution board 110 is connected to load 120, storage battery device 140, and fuel cell device 150 via a power line.

  The distribution board 110 includes an ammeter 180 and an ammeter 181. In the present embodiment, the ammeter 180 and the ammeter 181 correspond to current sensors.

  Ammeter 180 is used for load following control of storage battery device 140. The ammeter 180 is provided on the power line upstream (side closer to the system) than the connection point between the storage battery device 140 and the fuel cell device 150 and the power line.

  The ammeter 181 is used for load following control of the fuel cell device 150. The ammeter 181 is provided on the power line upstream of the connection point between each of the storage battery device 140 and the fuel cell device 150 and the power line (on the side closer to the system).

  Thus, the ammeter 180 and the ammeter 181 are provided at positions common to the storage battery device 140 and the fuel cell device 150 in the power line. Therefore, the current values detected by the ammeter 180 and the ammeter 181 are equal.

  The load 120 is a device that consumes power supplied via a power line. For example, the load 120 includes devices such as a refrigerator, a freezer, lighting, and an air conditioner.

  The storage battery device 140 includes a storage battery 141 and a PCS 142. The storage battery 141 is a device that stores electric power. The PCS 142 is a device (Power Conditioning System) that converts AC power supplied from the distribution line 31 (system) into DC power. Further, the PCS 142 converts DC power output from the storage battery 141 into AC power.

  The storage battery device 140 operates by load following control. Specifically, the storage battery device 140 controls the storage battery 141 such that the power output from the storage battery 141 becomes the target power for load follow-up control. In other words, the storage battery device 140 controls the power output from the storage battery 141 so that the value calculated from the current value detected by the ammeter 180 and the voltage value detected by the PCS 142 becomes the target received power.

  The fuel cell device 150 includes a fuel cell 151 and a PCS 152. The fuel cell 151 is an example of a power generation device, and is a device that generates electric power using fuel (gas). The fuel cell 151 may be, for example, an SOFC or a PEFC. The PCS 152 is a device (Power Conditioning System) that converts DC power output from the fuel cell 151 into AC power.

  The fuel cell device 150 operates by load following control. Specifically, the fuel cell device 150 controls the fuel cell 151 so that the power output from the fuel cell 151 becomes the target power for load following control. In other words, the fuel cell device 150 controls the power output from the fuel cell 151 so that the value calculated from the current value detected by the ammeter 181 and the voltage value detected by the PCS 152 becomes the target received power. To do.

  The storage battery device 140 and the fuel cell device 150 have different response speeds (load follow-up speeds) indicating output electric energy that can change per unit time. In the present embodiment, the storage battery device 140 and the fuel cell device 150 have different maximum output power amounts that can change per unit time. Specifically, the maximum output power amount that can change per unit time is larger in the storage battery device 140 than in the fuel cell device 150.

  The hot water storage device 160 is a device that generates hot water or maintains the water temperature using fuel (gas). Specifically, the hot water storage device 160 has a hot water storage tank, and the water supplied from the hot water storage tank is generated by heat generated by combustion of fuel (gas) or exhaust heat generated by operation (power generation) of the fuel cell 151. warm. Specifically, the hot water storage device 160 warms the water supplied from the hot water storage tank and returns the heated hot water to the hot water storage tank.

  The EMS 200 is a device (Energy Management System) that controls the storage battery device 140, the fuel cell device 150, and the hot water storage device 160. Specifically, the EMS 200 is connected to the storage battery device 140, the fuel cell device 150, and the hot water storage device 160 via signal lines, and controls the storage battery device 140, the fuel cell device 150, and the hot water storage device 160. The EMS 200 controls the power consumption of the load 120 by controlling the operation mode of the load 120.

  The EMS 200 is connected to various servers via the network 60 and acquires various types of information. Various servers store, for example, information (hereinafter referred to as energy charge information) such as the unit price of power supplied from the grid, the unit price of power received from the grid, and the unit price of fuel gas.

  Communication between the EMS 200 and each device (the load 120, the storage battery device 140, the fuel cell device 150, and the hot water storage device 160) is performed according to a predetermined protocol. Examples of the predetermined protocol include a protocol called “ECHONET Lite” or “ECHONET”. However, the present invention is not limited to this, and the predetermined protocol may be a protocol other than “ECHONET Lite” and “ECHONET”.

(EMS)
Hereinafter, the EMS according to the present embodiment will be described. FIG. 3 is a block diagram showing the EMS 200 according to the present embodiment.

  As illustrated in FIG. 3, the EMS 200 includes a communication unit 210, a storage unit 220, and a control unit 230.

  The communication unit 210 receives various signals from a device connected via a signal line. For example, the communication unit 210 may receive information indicating the storage amount of the storage battery 141 from the storage battery device 140. The communication unit 210 may receive information indicating the power generation amount of the fuel cell 151 from the fuel cell device 150. The communication unit 210 may receive information indicating the amount of hot water stored in the hot water storage device 160 from the hot water storage device 160.

  In addition, the communication unit 210 transmits various signals to a device connected via a signal line. For example, the communication unit 210 transmits a signal for controlling the storage battery device 140, the fuel cell device 150, and the hot water storage device 160 to each device. The communication unit 210 transmits a control signal for controlling the load 120 to the load 120. The communication unit 210 receives the current value detected by the ammeter 180 and the ammeter 181 from the ammeter 180 and the ammeter 181 connected via the signal line.

  The storage unit 220 stores various information used for control by the control unit 230. The storage unit 220 stores priorities determined for each of the plurality of distributed power sources. The priority may be set by user input.

  Or a priority may be defined according to the cost of the unit electric energy which each of a some distributed power supply (the storage battery apparatus 140 and the fuel cell apparatus 150) outputs. In this case, it is preferable to set the priority for each of the plurality of distributed power sources so that the priority is increased as the cost of the unit power amount is lower. The unit power cost is determined according to the unit price of power supplied from the grid, the unit price of power received from the grid, the unit price of fuel gas purchased, and the like.

  The control unit 230 controls the load 120, the storage battery device 140, the fuel cell device 150, and the hot water storage device 160. Further, the control unit 230 controls a response speed of at least one of the plurality of distributed power sources (the storage battery device 140 and the fuel cell device 150). The control unit 230 controls the response speed of at least one of the distributed power supplies so that the response speed of the distributed power supply with high priority is faster than the response speed of the distributed power supply with low priority.

  In the present embodiment, the control unit 230 limits at least one of the distributed power sources by limiting the output power amount that can change per unit time so as to be smaller than the maximum output power amount that can change per unit time. Controls the response speed of the.

  For example, the control unit 230 limits the output power amount that can be increased per unit time so as to be smaller than the maximum output power amount that can be increased per unit time. Alternatively, the amount of output power that can be reduced per unit time is limited to be smaller than the maximum output power amount that can be reduced per unit time.

  FIG. 4A is a diagram for explaining the maximum output power amount that can be increased per unit time. In FIG. 4A, θ1max indicates the maximum output power amount that can be increased per unit time in the storage battery device 140. θ2max indicates the maximum output power amount that can be increased per unit time in the fuel cell device 150.

  As shown in FIG. 4A, the maximum output power amount θmax that can be increased per unit time is larger in the storage battery device 140 than in the fuel cell device 150. In other words, the storage battery device 140 has a faster response speed than the fuel cell device 150. Therefore, the storage battery device 140 immediately follows the change in power consumption of the load 120, but the fuel cell device 150 cannot immediately follow.

  FIG. 4B is a diagram illustrating an example of transition of output power of each of the storage battery device 140 and the fuel cell device 150 with respect to a change in power consumption of the load. As shown in FIG. 4B, the output power of the storage battery device 140 and the fuel cell device 150 changes as the power consumption (solid line) of the load 120 changes. Here, consider a case where the power consumption of the load 120 increases at time t2 after the power consumption of the load 120 sharply decreases at time t1.

  As shown in FIG. 4B, the output power of the storage battery device 140 decreases during the period in which the power consumption of the load 120 sharply decreases, but the decrease in the output power of the storage battery device 140 is less than the power consumption of the load 120. Since it cannot catch up with the decrease, the output power of the fuel cell device 150 also decreases.

  On the other hand, in the period when the power consumption of the load increases, the output of the storage battery device 140 first increases. And the output of the storage battery apparatus 140 reaches the maximum output electric energy. Here, of the power consumption in the load 120, the amount that cannot be covered by the output of the storage battery device 140 is maintained as the output of the fuel cell device 150. That is, the output of the storage battery device 140 is maximized, and the remaining amount is still supplied from the fuel cell device 150.

  Here, when the cost of the unit power amount to be output is lower in the fuel cell device 150 than in the storage battery device 140, a sufficient cost reduction cannot be achieved. That is, rather, the output of the fuel cell device 150 should be increased and the output of the storage battery device 140 should be decreased.

  Therefore, when the fuel cell device 150 is cheaper than the storage battery device 140, the priority of the fuel cell device 150 is set higher than the priority of the storage battery device 140. be able to. In such a case, the priority may be set by the user. Alternatively, the control unit 230 may set the priority based on various information stored in the storage unit 220. Furthermore, the control unit 230 limits the output power amount that can be increased per unit time, thereby slowing down the response speed of the storage battery device 140 having a low priority.

  FIG. 5A is a diagram for explaining an example of limiting the amount of output power that can be increased per unit time.

  As shown in FIG. 5 (a), the control unit 230 causes the storage battery device 140 per unit time so as to be smaller than the maximum output power amount θ1max (see FIG. 4 (a)) that can be increased per unit time. The output power amount θ1 that can be increased is limited. For example, the control unit 230 limits the output power amount θ1 that can be increased per unit time in the storage battery device 140 to the maximum output power amount θ2max that can be increased per unit time in the fuel cell device 150. Here, “limit” means that the control unit 230 transmits a signal having a parameter for designating an upper limit value of the maximum output power per unit time to the distributed power source such as the storage battery device 140 from the communication unit 210. This is realized by limiting the output per unit time within the upper limit specified by the distributed power source such as the storage battery device 140 that has received the. Here, the control unit 230 generates a signal having a parameter for designating an upper limit value in a format conforming to a predetermined protocol (ECHONET Lite or the like).

  FIG. 5B shows changes in output power of each of the storage battery device 140 and the fuel cell device 150 with respect to a change in power consumption of the load when the output power amount θ1 that can be increased per unit time in the storage battery device 140 is limited. It is a figure which shows an example. As shown in FIG. 5B, the output power of the storage battery device 140 and the fuel cell device 150 changes as the power consumption (solid line) of the load 120 changes. Here, consider a case where the power consumption of the load 120 increases at time t2 after the power consumption of the load 120 sharply decreases at time t1.

  As shown in FIG. 5B, by limiting the output power amount θ1 that can be increased per unit time in the storage battery device 140, the output power of the fuel cell device 150 is reduced during the period when the power consumption of the load 120 increases. The increase in the output power of the fuel cell device 150 catches up with the increase in the power consumption of the load 120. On the other hand, the output power of the storage battery device 140 is maintained without increasing. Therefore, when the fuel cell device 150 is cheaper than the storage battery device 140, the cost of the unit power to be output can be reduced sufficiently.

(Control method)
FIG. 6 is a flowchart showing a control method according to the present embodiment.

  As shown in FIG. 6, in step S110, the control unit 230 acquires the priority of each distributed power source. For example, the priority is set to be higher as the cost of the unit power amount is lower. The unit power cost is determined according to the unit price of power supplied from the grid, the unit price of power received from the grid, the unit price of fuel gas purchased, and the like.

  In step S <b> 120, the control unit 230 limits the output power amount θ that can be increased per unit time for the distributed power sources with the second priority or higher. For example, the control unit 230 sets the output power amount θ that can be increased per unit time in the distributed power source with the second priority or higher to the maximum output power amount θmax that can be increased per unit time in the distributed power source with the highest priority. Restrict to:

  As described above, according to the present embodiment, it is possible to prevent only the distributed power supply having a high response speed from operating, and therefore it is possible to appropriately control the outputs of the plurality of distributed power supplies. Moreover, since it is not necessary to make the load which a distributed power supply should supply electric power between several distributed power supplies, the expansion of the scale of the distribution board 110 can be suppressed.

[Example of change]
Below, the example of a change of embodiment mentioned above is explained.

  In the embodiment described above, the control unit 230 controls the response speed of the distributed power supply by limiting the output power amount θ that can be increased per unit time.

  On the other hand, in this modified example, the control unit 230 controls the response speed of the distributed power supply by adjusting the cycle for performing the load following control. For example, the control unit 230 controls the response speed of the distributed power supply by adjusting the period for acquiring the current value detected by the current sensor (the ammeter 180 and the ammeter 181).

  FIG. 7A is a diagram for explaining a cycle (control cycle) for performing load following control. Here, a case is assumed in which the control cycles of storage battery device 140 and fuel cell device 150 are equal in the initial state.

  As shown to Fig.7 (a), the storage battery apparatus 140 performs load follow-up control with the period T1. Specifically, the storage battery device 140 acquires the current value detected by the ammeter 180 at the period T1, and the value calculated from the acquired current value and the voltage value detected by the PCS 142 is the target received power. Thus, the electric power output from the storage battery 141 is controlled.

  The fuel cell device 150 performs load follow-up control in cycle 2. For example, the fuel cell device 150 acquires the current value detected by the ammeter 181 at the cycle T2, and the value calculated from the acquired current value and the voltage value detected by the PCS 152 becomes the target received power. As described above, the power output from the fuel cell 151 is controlled.

  As described above, the maximum output electric energy θmax that can be increased per unit time is larger in the storage battery device 140 than in the fuel cell device 150. In other words, the storage battery device 140 has a faster response speed than the fuel cell device 150. Therefore, the storage battery device 140 immediately follows the change in power consumption of the load 120, but the fuel cell device 150 cannot immediately follow.

  Therefore, the control unit 230 determines the priority of the fuel cell device 150 over the priority of the storage battery device 140 when the fuel cell device 150 is cheaper than the storage battery device 140 in terms of the output unit power. Set high. Furthermore, the control part 230 makes the response speed of the storage battery apparatus 140 with a low priority low by adjusting the period which performs load follow-up control.

  FIG. 7B is a diagram for explaining an example of adjusting the cycle for performing the load follow-up control.

  As illustrated in FIG. 7B, the control unit 230 performs load tracking control so that the cycle in which the fuel cell device 150 performs load tracking control is shorter than the cycle in which the storage battery device 140 performs load tracking control. Adjust the period. In the example of FIG. 7B, the control unit 230 extends the cycle in which the storage battery device 140 performs load follow-up control. Alternatively, the control unit 230 may shorten the cycle in which the fuel cell device 150 performs the load follow-up control if the cycle in which the fuel cell device 150 performs the load follow-up control can be shortened.

  FIG. 8 is a flowchart showing a control method according to this modification.

  As shown in FIG. 8, in step S210, the control unit 230 acquires the priority of each distributed power source. For example, the priority is set to be higher as the cost of the unit power amount is lower. The unit power cost is determined according to the unit price of power supplied from the grid, the unit price of power received from the grid, the unit price of fuel gas purchased, and the like.

  In step S <b> 220, the control unit 230 extends the period for performing the load following control for the distributed power sources with the second priority or higher. For example, the control unit 230 makes the cycle in which the distributed power source with the second priority or higher performs load tracking control longer than the cycle in which the distributed power source with the highest priority performs load tracking control.

  Thus, by extending the cycle in which the storage battery device 140 performs load follow-up control, the response speed of the storage battery device 140 is reduced. Therefore, the same effect as that of the above-described embodiment can be obtained. Specifically, when the fuel cell device 150 is cheaper than the storage battery device 140, the cost of unit power to be output can be reduced sufficiently.

[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 above-described embodiment, the combination of the storage battery device 140 and the fuel cell device 150 has been described as an example of a plurality of distributed power sources. However, the combination is not limited to the storage battery device 140 and the fuel cell device 150, and may be a combination of other distributed power sources that operate by load following control. Further, not limited to two distributed power sources, three or more distributed power sources may be provided.

  In the embodiment described above, different ammeters (ammeter 180 and ammeter 181) are provided for each distributed power source. However, one ammeter may be shared by a plurality of distributed power sources.

  In the embodiment described above, the EMS 200 controls the response speed of the plurality of distributed power sources. However, the PCS 142 and the PCS 152 may control the response speeds of the storage battery device 140 and the fuel cell device 150.

  The EMS 200 may be a HEMS (Home Energy Management System), a SEMS (Store Energy Management System), a BEMS (Building Energy Management System), or an FEM. There may be.

  DESCRIPTION OF SYMBOLS 10 ... Consumer, 10A, 10B ... Consumer group, 20, 20A, 20B ... CEMS, 30, 30A, 30B ... Substation, 31, 31A, 31B ... Distribution line, 40 ... Smart server, 50 ... Power plant, 51 DESCRIPTION OF SYMBOLS ... Power transmission line, 60 ... Network, 100 ... Energy management system, 110 ... Distribution board, 120 ... Load, 140 ... Storage battery device, 141 ... Storage battery, 142 ... PCS, 150 ... Fuel cell device, 151 ... Fuel cell, 152 ... PCS, 160 ... hot water storage device, 180 ... ammeter, 181 ... ammeter, 200 ... EMS, 210 ... communication unit, 220 ... storage unit, 230 ... control unit

Claims (8)

Multiple devices including distributed power supplies that output power;
A controller that communicates with the plurality of devices using a predetermined protocol;
The control system transmits a signal designating a maximum output power amount per unit time of output power to the distributed power source using the predetermined protocol.   2. The management system according to claim 1, wherein the control device transmits, as the maximum output power amount per unit time, a parameter that specifies an upper limit value of the maximum output power amount that can be increased per unit time. . The plurality of devices includes a plurality of distributed power sources,
3. The management system according to claim 1, wherein the control device transmits a maximum output power amount per unit time different from each other to each of the plurality of distributed power sources.   The said control apparatus transmits the said maximum output electric energy of the said distributed power supply based on the priority according to the cost according to the cost of the unit electric energy which the said some distributed power supply outputs. Management system.   The management system according to claim 1, wherein the plurality of devices include at least one of a load that consumes power and a hot water storage device. The distributed power source includes a storage battery device,
The management system according to claim 1, wherein the control device receives information indicating a storage amount from the storage battery device. A control device that communicates with a plurality of devices including a distributed power source that outputs power using a predetermined protocol,
A control apparatus comprising: a control unit that transmits a signal designating a maximum output power amount per unit time of output power to the distributed power source using the predetermined protocol. A control method in a control device that controls a plurality of devices including a distributed power source that outputs power by communicating with a predetermined protocol
The control device includes a step of transmitting a signal designating a maximum output power amount per unit time of output power to the distributed power source by the predetermined protocol.