JP2017017808A - Power management device and management server - Google Patents

Abstract

PROBLEM TO BE SOLVED: To economically operate a power management system including distributed power sources in response to a command of output restriction even when the command of output restriction has become executed.SOLUTION: A power management device 30 according to the present invention controls distributed power sources 40, and at least one of a storage device 60 and an HP-type hot-water supply device 50, and comprises: a communication unit 31 for receiving a change command from a management server 10 that obtains a change command list of output restriction targeted at power plants including the distributed power sources 40 and other power plants from a server of a power company; and a control unit 33 that controls the output restriction of the distributed power sources 40. If the other power plants are change objects for output restriction although the power plants including the distributed power sources 40 are not change objects for output restriction, the communication unit 31 obtains reference information on the change command targeting the other power generation plants, and the control unit 33 changes the control contents of preliminary operation to control at least one of the storage device 60 and the HP-type hot-water supply device 50 on the basis of the reference information.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a power management apparatus and a management server.

  A distributed power supply system that controls a distributed power supply such as a solar power generation device or a power storage device linked to a system is known (for example, see Patent Document 1).

  Some of the electric power generated by the distributed power source can be sold by causing the grid (electric power company) to flow backward. For example, renewable energy generated by sunlight, wind power, or the like is currently generated power that can be sold.

  By the way, since 2015, electric power companies have set the upper limit of the number of days or hours per year as the upper limit for the reverse power flow to the system of power generated by the solar power generation system, for the solar power generation apparatus newly connected to the system. It is planned to issue an output suppression command that restricts the amount of power generation to an arbitrary amount.

JP 2011-101523 A

  Even when such an output suppression command is executed, it is required to economically operate a power management system including a distributed power source such as a solar power generation device in response to the output suppression command. ing.

  An object of the present invention made in view of such points is to economically operate a power management system including a distributed power source in response to an output suppression command even when an output suppression command is executed. An object of the present invention is to provide a power management apparatus and a management server that can perform the above.

  A power management apparatus according to an embodiment of the present invention is a power management that controls a distributed power source capable of causing a reverse flow of generated power to a system, and at least one of a power storage device and an HP hot water supply device connected to the system. A communication unit that receives the change command from a management server that acquires a power suppression change command for a power plant including the distributed power source and another power plant from a server of an electric power company, and the change A control unit that controls output suppression of the distributed power source based on a command, and a power plant that includes the distributed power source is not a target of output suppression change based on the change command, but other power plants use the change command. When the output is based on the output suppression change target, the communication unit obtains reference information related to the change command for the other power plant from the management server, and the control unit receives the reference information. Based on, it is characterized in changing the control contents of the preliminary operation for controlling at least one of said power storage device and the HP type hot water supply device.

  In addition, the management server according to the embodiment of the present invention is a power that controls a distributed power source capable of causing the generated power to flow backward in the system, and at least one of the power storage device and the HP hot water supply device connected to the system. A management server that communicates with a management device and transmits an output suppression change command to the power management device included in the power plant to be managed, the communication unit acquiring the change command from a server of an electric power company, and A storage unit storing attribute information of a power plant to be managed; and a control unit that extracts a non-target power plant that is not a target for changing output suppression among the power plants to be managed, the control unit Is characterized in that reference information related to a change command for another power plant is transmitted to the power management device provided in the non-target power plant via the communication unit.

  According to the power management apparatus and the management server according to the embodiment of the present invention, even when the output suppression command is executed, the power management system including the distributed power source is economically compatible with the output suppression command. Can be operated.

It is a figure for demonstrating the outline | summary of output suppression. It is a figure which shows a mode that the annual schedule of output suppression is changed by a change command. It is a figure showing a schematic structure of a power management system concerning one embodiment of the present invention. It is a figure which shows an example of the customer list which the memory | storage part of the management server has memorize | stored. It is a figure which shows an example of a customer list, an object list, and a non-object list. It is a figure which shows an example of the reference information which a management server transmits to a power management apparatus. It is a sequence diagram which shows an example of operation | movement of the power management system which concerns on one Embodiment of this invention.

  Before describing an embodiment of the present invention, an example of processing related to output suppression will be described with reference to FIG.

  The electric power company can request the power plant to suppress the output of the reverse power flow to the grid, up to a predetermined number of days or hours per year.

  Here, the “power plant” is a facility that can sell power by reversely flowing the power generated by solar power or wind power into the grid. Depending on the scale of the generated power, it is a large-scale power plant or medium-scale power plant. There are small power plants. A large-scale power plant is, for example, a wind power plant with an output exceeding 1 MW, a mega solar, or the like. The medium-scale power plant is, for example, a building or factory that sells power generated by a solar panel installed on the roof of a building or factory. The small-scale power plant is, for example, a building having a wind power generation facility with an output of about 3 to 10 kW, a general house that sells power generated by a solar panel installed on the roof, and the like. Thus, in this application, a general house is also handled as a “power plant”. In addition, it is assumed that the power generation facility of the electric power company is not included in the scope of the term “power plant” used in the present application.

  The power company uploads the registration code of the power plant subject to output suppression and the annual schedule of output suppression to the server 100 of the power company.

  The power company only uploads the power plant registration code and the annual schedule of output suppression to the power company server 100, and does not distribute it to each power plant.

  In the example illustrated in FIG. 1, the management server 200 periodically accesses the power company server 100 and acquires information uploaded to the power company server 100. The management server 200 manages the large-scale power plant 300, the medium-scale power plant 400, and the small-scale power plants 500-1 to 500-3. The annual schedule of output suppression obtained from the server 100 of the power company is large. The data is transmitted to the scale power plant 300, the medium power plant 400, and the small power plants 500-1 to 500-3.

  Each power plant is given a registration code by the power company. In the example shown in FIG. 1, the large-scale power plant 300 has a registration code “S100301”, the medium-scale power plant 400 has a registration code “E200402”, and the small-scale power plants 500-1 to 500-3 have , Registration codes “H305511”, “H305512”, and “H305513” are attached, respectively.

  Each power plant executes output suppression according to the annual schedule of output suppression acquired from the management server 200. For example, when 100% output suppression is instructed at a certain date and time, the power plant suppresses the reverse power flow by solar power generation by 100% during the instructed time.

The electric power company may change the power suppression planned in the annual schedule according to the situation of power generation or power demand. For example, there are the following three types of output suppression changes.
・ Cancellation of scheduled output suppression (change from 100% to 0%)
-Increase / decrease in the amount of planned output suppression (for example, change from 80% to 60%)
-Implementation of output suppression that was not planned (change from 0% to maximum 100%)

  When changing the output suppression, the power company uploads the output suppression change command list to the server 100 of the power company. Here, the “change command list” is a list in which the change command is associated with the power plant registration code. In addition, the “change command” includes at least information on the time for changing the output suppression (for example, from what time to what time) and the content of the change in the output suppression (for example, what percentage of the suppression is to be performed). Yes.

  FIG. 2 shows an example of changing the annual schedule of output suppression according to the change command.

  In the example shown in FIG. 2, the annual schedule designates what percentage of output suppression is performed for each section, with 30 minutes as one section. For example, when the power company wants to change the output suppression after the section B, the power company uploads a change command to the power company server 100 during the section A that is the previous section.

In the example shown in FIG. 2, the electric power company issues a change command for changing the output suppression of the sections B to F as follows as the first change command, and the section A that is the section immediately before the section B. Uploaded during.
Section B: 100% → 80%
Section C: 80% → 100%
Section D: 80% → 100%
Section E: 0% → 80%
Section F: 0% → 80%
As described above, when the generated power becomes excessive or the generated power is expected to decrease due to bad weather, the value of the initial annual schedule is replaced with the value of the change command.

In the example shown in FIG. 2, the electric power company is a change command for changing the output suppression of the sections C to D as follows as the second change instruction in the section immediately before the section C. Uploaded during section B.
Section C: 100% → 60%
Section D: 100% → 60%
Thus, the output suppression change may be performed a plurality of times a day.

  The management server 200 periodically accesses the power company server 100. When a new change command list has been uploaded to the server 100 of the power company, the management server 200 acquires the change command list and transmits each change command to the corresponding power plant.

  At this time, the management server 200 transmits the change command only to the corresponding power plant and does not transmit it to other power plants. For example, when there is a change command for the small-scale power plant 500-1 in the change command list, the management server 200 transmits the change command only to the small-scale power plant 500-1, and sends it to other power plants. Do not send.

  When the power plant receives the change command, the power plant performs output suppression of the content specified by the change command during the time zone specified by the change command, but before the time zone specified by the change command, It is preferable to execute control for the apparatus or the like in advance to reduce economic loss. For example, it is assumed that the small-scale power plant 500-1 has received a change command for changing the output suppression from 12:00 to 13:00 from 0% to 100%. In this case, it may be prevented that the electric power generated by the solar power generation between 12:00 and 13:00 is wasted due to the fact that the reverse power flow cannot be performed. Therefore, the small-scale power plant 500-1 discharges the power storage devices connected in parallel before 12 o'clock to create a free capacity, and the power generated by sunlight between 12 o'clock and 13 o'clock is Can be used for charging.

  However, since the change command list only needs to be uploaded up to the section before the section where output suppression is changed, depending on the upload timing, the power plant actually outputs the change command and then outputs it. There is a case where there is almost no time (for example, about 10 minutes or 20 minutes) until the change of suppression is executed. In such a case, even if the power storage device is discharged, sufficient free space cannot be prepared, and the generated power from sunlight may be wasted.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 3 is a diagram showing a schematic configuration of the power management system 1 according to the embodiment of the present invention. In FIG. 3, the solid lines connecting the functional blocks mainly indicate power lines, and the broken lines mainly indicate communication lines or signal lines.

  The power management system 1 includes a management server 10 and power plants 20-1 to 20-3. In FIG. 3, the management server 10 is configured to manage the three power plants 20-1 to 20-3, but this is an example, and the number of power plants managed by the management server 10 is It is not limited. In the following explanation, power plants 20-1 to 20-3 are assumed to be located in district A, district B, and district C, respectively, and district B is adjacent to both district A and district C. It shall be. Hereinafter, when it is not necessary to distinguish the power plants 20-1 to 20-3, the power plants 20 will be collectively referred to.

  The management server 10 is connected to a power company server and the power plant 20 via a network such as the Internet, and can communicate with the power company server and the power plant 20. The management server 10 periodically accesses the server of the electric power company, and when the new change command list is uploaded to the power company server by the power company, acquires the change command list. The management server 10 transmits a corresponding change command to the power plant 20 included in the acquired change command list. In addition, the management server 10 creates reference information based on the acquired change command list, and transmits the reference information to the power plant 20 that is managed. The contents of “reference information” will be described later. Details of the configuration and functions of the management server 10 will also be described later.

  Next, the power plant 20 will be described. In addition, in FIG. 3, although only the structure is shown about the power plant 20-2, the power plants 20-1 and 20-3 are also the same structure.

  The power plant 20 includes a power management device 30, a solar power generation device 40, a load 50, and a power storage device 60.

  The power management device 30 can communicate with the management server 10 and controls the load 50 and the power storage device 60 based on the change command and the reference information acquired from the management server 10. Details of the configuration and functions of the power management apparatus 30 will be described later.

  The solar power generation device 40 generates DC power from sunlight energy and converts the generated DC power into AC power. The solar power generation device 40 can sell AC power by causing AC power to flow backward to the grid 70 (electric power company), and can also supply it to the load 50 and the power storage device 60. Note that the solar power generation device 40 is shown as an example of a distributed power source, and may be another type of distributed power source, such as a wind power generation device, depending on the contract conditions with the power company.

  The load 50 is an electric device or the like connected to the system 70, and is, for example, an HP (Heat Pump) type hot water supply device or an air conditioner. Although FIG. 3 shows a state where one load 50 is connected to the system 70, the load 50 may be an arbitrary number.

  The power storage device 60 is used by being connected to the system 70 and can supply power to the load 50 by discharged power. In addition, the power storage device 60 can be charged with power supplied from the solar power generation device 40 or power supplied from the grid 70. When the power storage device 60 is charged, the power storage device 60 can also be regarded as a kind of load.

  Next, the configuration and function of the management server 10 will be described. The management server 10 includes a communication unit 11, a storage unit 12, and a control unit 13.

  The communication unit 11 can communicate with a server of the electric power company and the power plant 20 via a network such as the Internet. The communication unit 11 periodically accesses the power company server, and acquires the output suppression change command list uploaded by the power company to the power company server. Moreover, the communication part 11 acquires the annual schedule of an output suppression from the server of an electric power company at least once a year. In addition, the communication part 11 may extract and acquire the change instruction | command to the power plant 20 which the management server 10 makes management object, instead of acquiring the whole output suppression change instruction list.

  The storage unit 12 includes various memories. The storage unit 12 stores a registration code of the power plant 20 managed by the management server 10 as a customer list. FIG. 4 shows an example of a customer list stored in the storage unit 12. As illustrated in FIG. 4, for example, the storage unit 12 stores a registration code of the power plant 20 in association with attributes (area, power generation amount, etc.) of the power plant 20. “District” indicates in which district the power plant 20 corresponding to the registration code is located, and “Power generation amount” indicates the maximum power generation amount of the power plant 20 corresponding to the registration code. Note that FIG. 4 is merely an example, and the storage unit 12 may store other attributes in association with the registration code.

  The control unit 13 controls and manages the entire management server 10 and can be configured by a processor, for example.

  The control unit 13 controls the communication unit 11 to periodically access the power company server to acquire the change command list.

  When the control unit 13 acquires the change command list from the server of the power company via the communication unit 11, the list of registration codes included in the change command list and the management server 10 stored in the storage unit 12 are displayed. Compare the list of registration codes of the power plant 20 that is the management target, and the “target list” that is a list of registration codes of the power plant 20 that is the target of sending the change command and the power generation that is not the target of sending the change command A “non-target list” that is a list of registration codes at the location 20 is created.

  With reference to FIG. 5, how the control unit 13 creates a target list and a non-target list will be described. FIG. 5A shows the customer list stored in the storage unit 12 with attributes omitted. The control unit 13 compares the power plant registration code included in the change command list acquired from the power company server with the customer list in FIG. 5A, and from the registration code included in either list, for example, Then, a target list as shown in FIG. Subsequently, the control unit 13 creates a non-target list as shown in FIG. 5C by removing the registration code of the target list shown in FIG. 5B from the customer list shown in FIG.

  The control unit 13 corresponds to the power plant 20 included in the change command list acquired from the server of the power company with respect to the power plant (power plant of the target list) 20 corresponding to the registration code included in the target list. A change command is transmitted via the communication unit 11. At this time, the control unit 13 transmits a change command for the power plant 20 only to each power plant 20 in the target list.

  At this time, the control unit 13 also provides information related to power plants other than the power plant (power plants in the non-target list) 20 to the power plant 20 corresponding to the registration code in the target list as “reference information”. You may send as. When transmitting the reference information to the power plant 20, the control unit 13 may transmit the reference information with an identifier indicating that the reference information is the reference information.

  Here, the “reference information” is information created by the control unit 13 based on the change command list acquired from the server of the electric power company and the customer list stored in the storage unit 12, and a certain power plant 20 is information to be transmitted as information related to a change command to another power plant different from the power plant 20 (including information for which a change command has not been issued).

  The control unit 13 searches for a registration code that matches the registration code of the power plant 20 that is the management target of the management server 10 among the registration codes included in the change command list. The control unit 13 refers to the customer list stored in the storage unit 12 for the registration code extracted as a result of the search, and combines the attribute associated with the extracted registration code and the change instruction to the registration code To create reference information. Moreover, the control part 13 may produce the reference information to the effect that there is no change command about the power plant which was not listed in the change command list among the power plants 20 to be managed by the management server 10.

  FIG. 6 shows an example of reference information created by the control unit 13. In the example shown in FIG. 6, the reference information includes the attribute information (hereinafter simply referred to as the attribute) of the power plant 20 that is the target of the change command, in addition to the “time to be executed” and “the contents of the change” that are the change commands. )including. In the example shown in FIG. 6, district data is included in the “attribute” column. In the reference information, the attribute of the power plant 20 is included as data instead of the registration code itself of the power plant 20 from the viewpoint of information protection regarding other power plants. Note that the data included in the attribute column is not limited to the district, but may be a power generation amount or other attributes. Further, a plurality of attributes may be included in the attribute column.

  The control unit 13 transmits the reference information to the power plant (power plant in the non-target list) 20 corresponding to the registration code in the non-target list. Thereby, the power plant 20 in the non-target list to which the change command is not transmitted can also grasp the contents of the change command transmitted to the power plant 20 in the target list.

  Further, the control unit 13 may transmit the reference information including other useful information. For example, the control unit 13 may transmit, to the power plant 20, information such as how much kWh the power generation amount predicted to have been lost due to suppression at a power plant of an equivalent scale in an adjacent district. Accordingly, the power management device 30 of the power plant 20 that has received the reference information can accurately predict, for example, how much power to be discharged to the power storage device 60, and excessively the power storage device 60. Can be prevented from being discharged.

  Next, the configuration and function of the power management apparatus 30 will be described. The power management apparatus 30 includes a communication unit 31, a storage unit 32, and a control unit 33.

  The communication unit 31 can communicate with the management server 10 via a network such as the Internet. The communication unit 31 acquires an output suppression change command and reference information from the management server 10.

  The storage unit 32 includes various memories. The storage unit 32 stores an annual schedule for output suppression. The annual schedule of output suppression is uploaded to the server of the electric power company at least once a year, and the power management apparatus 30 acquires the annual schedule via the management server 10.

  The control unit 33 controls and manages the entire power management apparatus 30 and can be configured by, for example, a processor.

  The control unit 33 acquires the change command and reference information from the management server 10 via the communication unit 31 when the power plant 20 including the control unit 33 is the target of the change command. Moreover, the control part 33 acquires only reference information from the management server 10 via the communication part 31, when the power plant 20 in which self is contained is not the object of a change command.

  When receiving the change command, the control unit 33 performs output suppression according to the content of the change command in the section specified by the change command. For example, in a section from 12:30 to 13:00, when receiving a change command for changing the output suppression from 0% to 100%, the control unit 33 controls the system from 12:30 to 13:00. The solar power generation device 40 is controlled so as not to cause the reverse power flow to 70. In this case, in order not to waste the generated power of the photovoltaic power generation apparatus 40 that can no longer be reversely flowed, the control unit 33 generates the generated power of the photovoltaic power generation apparatus 40 if there is a load 50 that can be a power supply destination. Is supplied to the load 50, and if there is a free capacity in the power storage device 60, the power storage device 60 is controlled to be charged with the generated power of the solar power generation device 40.

  When the change command is received, the generated power of the solar power generation device 40 can hardly be supplied to the power storage device 60 when the free capacity of the power storage device 60 is small. Therefore, the control unit 33 discharges the power storage device 60 in advance before the interval in which the reverse power flow cannot be performed due to the change command so that the power that can be supplied to the power storage device 60 can be increased even in a section where the reverse power flow cannot be performed. To control.

  The operation of discharging the power storage device 60 in advance according to the state of output suppression is hereinafter referred to as “preliminary operation”. The preliminary operation is an operation of controlling at least one of the load 50 (HP hot water supply device) and the power storage device 60 in order to reduce economic loss before the output suppression is executed. As such a preliminary operation, not only the power storage device 60 is discharged, but, for example, when the load 50 is an HP hot water supply device, the time for boiling hot water in the HP hot water supply device may be changed. Specifically, in order to be able to boil hot water in the HP water heater during the time when output suppression is performed, the time before execution of output suppression is controlled to refrain from boiling water in the HP water heater. May be.

  Further, when receiving the change command, the control unit 33 also receives reference information. Based on the reference information, the control unit 33 predicts whether or not there is a high possibility of receiving a further change command.

  The control unit 33 acquires only reference information from the management server 10 when the power plant 20 including the control unit 33 is not the target of the change command. Based on the acquired reference information, the control unit 33 predicts what type of change command may be transmitted to the power plant 20 in which the control unit 33 is included. The control unit 33 changes the control content of the preliminary operation based on the prediction.

  For example, if it is known that district A, district B, and district C are in such a relationship that a change command is sent by a rotation number, it is expected that equivalent output suppression will be issued in each district for fairness. The In this case, when the power plant 20-2 in the district B receives the reference information that the change instruction is transmitted to the power plants in the adjacent district A or the district C, the power plant 20-2 in the district B Thereafter, the control unit 33 can predict that the change command for the power plant 20-2 is likely to be transmitted.

  When the control unit 33 predicts that there is a high possibility of receiving a change command for changing the output suppression from 0% to 100% based on the reference information, the control unit 33 changes the control content of the preliminary operation, for example, The power storage device 60 starts discharging from an earlier time than planned. In addition, it is possible to expect the effect of prolonging the life of the storage battery by predicting how much discharge power of the power storage device 60 is necessary based on the information indicating what percentage the output suppression is and discharging the appropriate amount.

  Thus, at the stage where the power plant 20 including itself is not the target of the change command, the control unit 33 changes the control content of the preliminary operation based on the prediction of the change command that may be received in the future. By doing so, it is possible to secure a long time for the preliminary operation. For example, when the control unit 33 controls the power storage device 60 to discharge as a preliminary operation, a time longer than at least one section (30 minutes) can be secured as a time for performing the preliminary operation, and more free space is available. A capacity can be secured in the power storage device 60.

  Further, the HP hot water supply device may be driven by supplying the discharge power obtained by discharging the power storage device 60 to the HP hot water supply device. As a result, it is possible to effectively use the power that was scheduled to be lost due to the output suppression, so that the economic loss is reduced.

  When an electric power company performs output suppression, if all power plants are shut down at the same time, there is a large risk of voltage drop and frequency fluctuation caused by it. Therefore, for example, it is assumed that the output suppression is executed with a wheel number that shifts the time for executing the output suppression for each predetermined area. Taking this into account, for example, when output suppression is executed by a change command in an adjacent district, the control unit 33 may receive a change command for executing output suppression with a time difference even in its own district. Can be predicted to be high. In addition, about the grouping of a rotation number, not only for every district but for example, grouping for every power generation capability etc. can be considered. The control unit 13 of the management server 10 may learn from what grouping the rotation is executed from the results of the output suppression executed so far, or inquire of the person in charge of the electric power company, etc. Information such as the grouping and order of the checked wheel numbers may be stored in the storage unit 12.

  When the control unit 33 predicts an output suppression change command based on the reference information, the control unit 33 may store information on whether or not the prediction is successful in the storage unit 32. Information on whether or not such a prediction has been made can be used for the next prediction by the control unit 33. At this time, the control unit 33 does not determine whether or not the prediction has been made, based on whether or not the change command for the power plant 20 including the device itself is as predicted, for example, to the adjacent power plant 20. The determination may be made in consideration of the change command. This is because if the predicted change command is not for the power plant 20 including the device itself but for the adjacent power plant 20, it may not be said that the prediction has completely deviated.

  With reference to the sequence diagram shown in FIG. 7, an example of the operation of the power management system 1 according to the embodiment of the present invention will be described.

  In the description of FIG. 7, the devices in the power plant 20-1 in the district A are described with “hyphen 1” such as “power management device 30-1” and the power plant 20-in the district B. The devices in 2 will be described with “hyphen 2” attached, such as “power management device 30-2”.

  At 12:00, the power company will change the output of the power plant 20-1 from 0%, which was originally set in the annual schedule, to 100% from 12:30 to 15:00. Is uploaded to the server of the electric power company (step S101).

  The control unit 13 of the management server 10 periodically accesses the server of the electric power company, and acquires the change command list uploaded at 12:00 at 12:00. The control unit 13 creates reference information based on the acquired change command list and customer list. The control unit 13 transmits the change command and the reference information to the power management device 30-1 in the power plant 20-1 in the district A that is the target of the change command, and the power plant 20 in the district B that is not the target of the change command. Only the reference information is transmitted to the power management apparatus 30-2 in -2 (step S102). Here, the reference information transmitted to the power management apparatus 30-1 includes information that the change command is not transmitted to the district B. Further, in the reference information transmitted to the power management apparatus 30-2, there is a change command for changing output suppression from 0% to 100% for the district A from 12:30 to 15:00. Information that was sent is included.

  Since the control unit 33-1 of the power management apparatus 30-1 needs to execute output suppression from 12:30, in preparation for this, the control unit 33-1 reserves to start discharging the power storage device 60-1 at 12:05. The control content of the operation is changed (step S103).

  The control unit 33-2 of the power management apparatus 30-2 slightly controls the power plant 20-2 in the district B because the output suppression is executed from 12:30 in the district A that is the neighboring district. Therefore, it is predicted that there is a high possibility that an output suppression change command will come at the time difference, and in preparation for this, the control content of the preliminary operation is changed at 12:05 so as to start discharging the power storage device 60-2 (step S104). ).

  Control unit 33-1 of power management device 30-1 controls to stop discharging power storage device 60-1 at 12:29 in preparation for execution of output suppression from 12:30 (step S105). . And the control part 33-1 performs output suppression from 12:30, and starts charge of the electrical storage apparatus 60-1 by the electric power generated by the solar power generation device 40-1 (step S106). At this time, the control unit 33-1 stores power with the generated power of the solar power generation device 40-1 for at least the amount of power discharged from the power storage device 60-1 between 12:05 and 12:29. Device 60-1 can be charged.

  At 13:30, the power company changed the output suppression of the power plant 20-1 from 100%, which had been changed by the change command uploaded at 12:00 from 14:00 to 15:00, to 0%. A change command to change the output control of the power plant 20-2 from 0% that was originally set in the annual schedule to 100% from 14: 0 to 16:30 The change command list including the data is uploaded to the power company server (step S107).

  The control unit 13 of the management server 10 periodically accesses the server of the electric power company, and acquires the change command list that was uploaded at 13:30 at 13:33. The control unit 13 creates reference information based on the acquired change command list and customer list. The control unit 13 transmits the change command and the reference information to the power management apparatuses 30-1 and 30-2 in the district A and the district B that are the targets of the change command (step S108). Here, in the reference information transmitted to the power management apparatus 30-1, a change command for changing the output suppression from 0% to 100% for the district B from 14:30 to 16:30. Contains information that has been sent. In addition, in the reference information transmitted to the power management apparatus 30-2, there is a change command for changing output suppression from 100% to 0% for the area A from 14:00 to 15:00. Information that was sent is included.

  Control unit 33-2 of power management device 30-2 controls to stop discharging power storage device 60-2 at 13:59 in preparation for execution of output suppression from 14:00 (step S109). . And control part 33-2 performs output control from 14:00, and starts charge of power storage device 60-2 by the generated electric power of solar power generation device 40-2 (Step S110). At this time, the control unit 33-2 stores electric power generated by the solar power generation device 40-2 for at least the amount of electric power discharged from the power storage device 60-2 between 12:05 and 13:59. Device 60-2 can be charged.

  The control unit 33-1 of the power management apparatus 30-1 cancels output suppression based on the received change command at 14:00 (step S111). At this time, the control unit 33-1 predicts that the change command is issued by the wheel number from the reference information acquired at 13:33, and it is unlikely that the output suppression change command will be issued in the immediate vicinity of the own device, Control can be performed so that additional discharge of power storage device 60-1 is not performed.

  As described above, according to the present embodiment, the power management device 30 acquires reference information from the management server 10 when the power plant 20 including the device itself is not a target for changing output suppression, and based on the reference information. Then, a change instruction to the future power plant 20 is predicted, and the control content of the preliminary operation for controlling the power storage device 60 is changed based on the prediction. Thereby, it is possible to ensure a long time for performing the preliminary operation, and it is possible to operate the power management system 1 economically.

(Calculation of output change rate)
The management server 10 may count the number of change commands from the annual schedule for each power plant 20. At this time, for the change command, the management server 10 “execution cancellation of output suppression (change from 100% to 0%)”, “increase / decrease in output suppression suppression amount (for example, change from 80% to 60%)” The change command may be divided into several types and the change command may be counted for each type, such as “Implementation of output (change from 0% to maximum 100%)”.

  The management server 10 may calculate an execution rate of output suppression for the whole or each district based on the change command from the annual schedule counted as described above, and may provide this to the power plant 20 as service information. Based on such service information, the power plant 20 can perform control to further reduce the amount of loss of generated power, and can accurately predict power sales revenue.

  Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, the functions included in each component, each step, etc. can be rearranged so that there is no logical contradiction, and multiple components, steps, etc. can be combined or divided into one It is. Further, although the present invention has been described mainly with respect to the apparatus, the present invention is a method including steps executed by each component of the apparatus, a method executed by a processor included in the apparatus, a program, or a storage medium storing the program. It should be understood that these can also be realized and are included in the scope of the present invention.

  In the above-described embodiment, the power management apparatus 30 predicts an output suppression change command that may be transmitted in the future based on the reference information received from the management server 10, and performs a preliminary operation based on the prediction. The configuration in which the control content of the power source is changed has been described. The configuration in which the management server 10 predicts an output suppression change command to each power plant 20 and transmits a preliminary operation command that is assumed to be optimal based on the prediction. It is good.

  Moreover, in the said embodiment, when the management server 10 accesses the server of an electric power company regularly and the new change command list has been updated, the change command and reference information contained in the change command list are displayed in the power management device. However, the power management apparatus 30 may periodically access the management server 10 to acquire the change command and reference information. Thus, if it is set as the structure which accesses the management server 10 from the power management apparatus 30, the processing burden of the management server 10 can be reduced.

  Further, the data such as the change command information and the customer information of the management server 10 may not be in the list format as described above, and may be in a text format in which, for example, management codes are continuously written.

DESCRIPTION OF SYMBOLS 1 Power management system 10 Management server 11 Communication part 12 Storage part 13 Control part 20 Power station 30 Power management apparatus 31 Communication part 32 Storage part 33 Control part 40 Solar power generation apparatus 50 Load 60 Power storage apparatus 70 System | strain

Claims (7)

A power management device that controls a distributed power source capable of causing reverse flow of generated power to a system, and at least one of a power storage device and an HP hot water supply device connected to the system,
A communication unit that receives the change command from a management server that acquires a power suppression change command for the power plant including the distributed power source and other power plants from a server of an electric power company;
A control unit that controls output suppression of the distributed power source based on the change command,
The power plant including the distributed power source is not a target for changing the output suppression based on the change command, but when another power plant is a target for changing the power suppression based on the change command,
The communication unit acquires, from the management server, reference information related to a change command for the other power plant,
The power management device, wherein the control unit changes a control content of a preliminary operation for controlling at least one of the power storage device and the HP hot water supply device based on the reference information.   The power management device according to claim 1, wherein the control unit predicts an output suppression change command to a power plant including the distributed power source based on the reference information, and based on the prediction, the power storage device And the control content of the preliminary | backup operation | movement which controls at least one of the said HP type hot water supply apparatus is changed, The power management apparatus characterized by the above-mentioned.   The power management device according to claim 1 or 2, wherein the reference information includes attribute information of the other power plant, an execution time of a change command to the other power plant, and a change to the other power plant. A power management apparatus characterized by including information on the contents of a command.   4. The power management device according to claim 1, wherein the preliminary operation is an operation of controlling the control unit to discharge the power storage device before output suppression is performed. 5. A power management apparatus characterized by the above.   5. The power management device according to claim 4, wherein the preliminary operation is an operation in which the control unit drives the HP hot water supply device with electric power discharged from the power storage device before output suppression is performed. A power management apparatus characterized by the above. Communicating with a distributed power source capable of causing the generated power to flow backward to the grid and a power management device that controls at least one of the power storage device and the HP hot water supply device connected to the grid, and the power plant to be managed is provided A management server for transmitting an output suppression change command to the power management device,
A communication unit for obtaining the change command from a server of an electric power company;
A storage unit storing attribute information of the power plant to be managed;
A control unit that extracts a non-target power plant that is not a target for changing output suppression among the power plants to be managed;
The control unit transmits, to the power management device included in the non-target power plant, reference information related to a change command for another power plant via the communication unit. server. In the management server according to claim 6,
The control unit, based on the change command and the attribute information of the power plant, at least the attribute information of the other power plant, the execution time of the change command to the other power plant, and the other A management server that creates the reference information so as to include information on the content of a change command to a power plant.

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