JP2018143092A - Control device, control method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress an output of each power generation device so as to maintain fairness of an output suppression when a suppression of an output of a power generation device such as a renewable energy power source is required.SOLUTION: A control device includes: a determination unit that determines output control information of a plurality of predetermined power generation devices on the basis of a first index relating to an output state of a power generation group and a second index relating to an output state of the plurality of predetermined power generation devices belonging to the power generation device group; and a communication unit that transmits the output control information to a plurality of corresponding predetermined power generation devices. The determination unit determines the output control information according to a difference between an output state of the power generation device group in an output control time zone and an output state of the predetermined power generation devices belonging to the power generation device group.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to a control device, a control method, and a program for controlling a power generation device.

2. Description of the Related Art There is known an electric power system to which a power generation device (hereinafter also referred to as “renewable power source”) that generates power using renewable energy such as a solar power generation device or a wind power generation device is connected.
In a power system to which a renewable energy power source is connected, when the power supply exceeds the power demand, it is necessary to suppress the output (power supply) of a power generator such as a renewable energy power source.
Patent Document 1 describes a power system control system that suppresses the output of a PV (Photovoltaic power generation) device connected to the power system.
The power system control system groups a plurality of PV devices based on the rated output of the PV devices. And this electric power system control system suppresses the output of a PV apparatus per group in order to satisfy electric power supply-demand balance.

Japanese Patent No. 5460622

Currently, power system managers (eg, power companies) have aggregators, PPS (Power Producer and Supplier), IPP (Independent Power Producer), and renewable energy sources. A mechanism for purchasing the output (electric power) of a power generation device such as a renewable energy power source from general consumers is being studied.
In this mechanism, for example, when each power generation device (for example, renewable energy power supply) of a plurality of IPPs is connected to the power system, the output of the power generation device of a specific IPP is always preferentially purchased, It is not preferable that the output of the IPP generator is always suppressed. For this reason, when the output of power generators, such as a renewable energy power supply, needs to be suppressed, it is calculated | required to suppress the output of each power generator so that the fairness of output suppression may be maintained.
The power system control system described in Patent Literature 1 is a system that simply suppresses the output of the PV device in units of groups in order to satisfy the power supply-demand balance, and does not consider anything about the fairness of output suppression. Therefore, in this power system control system, it has been difficult to suppress the output of each power generator so as to maintain fairness.

  The objective of this invention is providing the control apparatus, control method, and program which can solve the said subject.

The control device according to the present invention is based on a first index related to the output state of the power generation device group and a second index related to the output state of the plurality of predetermined power generation devices belonging to the power generation device group. A determination unit for determining output control information;
A communication unit that transmits the output control information to the corresponding predetermined power generation devices, and
The determination unit is configured to determine the output control information according to a difference between an output state of the power generation device group in an output control time zone and output states of the plurality of predetermined power generation devices belonging to the power generation device group. .

Alternatively, the output control information of the plurality of predetermined power generation devices is determined based on the first index related to the output state of the power generation device group and the second index related to the output state of the plurality of predetermined power generation devices belonging to the power generation device group. A decision unit to
A communication unit that transmits the output control information to the corresponding predetermined power generation devices, and
The determination unit further determines the output control information according to a difference between a first index relating to an output state of the power generation device group and a first index relating to an output state of a power generation device group different from the power generation device group. It is.

Alternatively, a determination unit that determines output control information of a plurality of predetermined power generation devices belonging to the power generation device group based on an index related to the output state of the power generation device group;
A communication unit that transmits the output control information to the corresponding predetermined power generation devices, and
The determination unit is configured to determine the output control information according to a difference between an index related to an output state of the power generation device group and an index related to an output state of a power generation device group different from the power generation device group.

Or, an index relating to the output state of a plurality of first power generation devices belonging to the power generation device group, and an indicator relating to the output state of a plurality of second power generation devices different from the plurality of first power generation devices belonging to the power generation device group, And a determination unit that determines output control information of the plurality of first power generation devices,
A communication unit that transmits the output control information to the corresponding first power generation devices,
The determining unit is configured to determine the output control information according to a difference between an output state of the plurality of first power generation devices and an output state of the plurality of second power generation devices in an output control time period.

Alternatively, the output control information of the plurality of predetermined power generation devices is determined based on the first index related to the output state of the power generation device group and the second index related to the output state of the plurality of predetermined power generation devices belonging to the power generation device group. A decision unit to
A communication unit that transmits the output control information to the corresponding predetermined power generation devices, and
The output control information is
The first index set based on a reference power generation amount of the power generation device group in a predetermined time zone and at least one of the number of suppressions or the suppression time of the power generation device group in an elapsed time zone;
Based on a reference power generation amount of the plurality of predetermined power generation devices belonging to the power generation device group in the predetermined time zone and at least one of the number of times of suppression or the suppression time of the plurality of predetermined power generation devices in the elapsed time zone. It is the structure determined according to the difference with the said 2nd parameter | index set by this.

The control method of the present invention is based on the first index related to the output state of the power generation device group and the second index related to the output state of the plurality of predetermined power generation devices belonging to the power generation device group. Determine the output control information,
Transmitting the output control information to the corresponding predetermined power generation devices,
The output control information is determined according to a difference between an output state of the power generation device group in an output control time zone and output states of the plurality of predetermined power generation devices belonging to the power generation device group.

Alternatively, the output control information of the plurality of predetermined power generation devices is determined based on the first index related to the output state of the power generation device group and the second index related to the output state of the plurality of predetermined power generation devices belonging to the power generation device group. And
Transmitting the output control information to the corresponding predetermined power generation devices,
The output control information is determined according to a difference between a first index relating to an output state of the power generation device group and a first index relating to an output state of a power generation device group different from the power generation device group.

Or, based on an index related to the output state of the power generation device group, determine output control information of a plurality of predetermined power generation devices belonging to the power generation device group,
Transmitting the output control information to the corresponding predetermined power generation devices,
The output control information is determined according to a difference between an index related to an output state of the power generation device group and an index related to an output state of a power generation device group different from the power generation device group.

Or, an index relating to the output state of a plurality of first power generation devices belonging to the power generation device group, and an indicator relating to the output state of a plurality of second power generation devices different from the plurality of first power generation devices belonging to the power generation device group, And determining output control information of the plurality of first power generators,
Transmitting the output control information to the corresponding first power generators;
The output control information is determined according to a difference between an output state of the plurality of first power generation devices and an output state of the plurality of second power generation devices in an output control time period.

Alternatively, the output control information of the plurality of predetermined power generation devices is determined based on the first index related to the output state of the power generation device group and the second index related to the output state of the plurality of predetermined power generation devices belonging to the power generation device group. And
Transmitting the output control information to the corresponding predetermined power generation devices,
The output control information is
The first index set based on a reference power generation amount of the power generation device group in a predetermined time zone and at least one of the number of suppressions or the suppression time of the power generation device group in an elapsed time zone; and the predetermined index Set based on a reference power generation amount of the plurality of predetermined power generation devices belonging to the power generation device group in the time zone and at least one of the number of suppressions or the suppression time of the plurality of predetermined power generation devices in the elapsed time zone This is a method of determining according to a difference from the second index.

The program of the present invention is stored in a computer.
Determination to determine output control information of the plurality of predetermined power generation devices based on a first index regarding the output state of the power generation device group and a second index regarding the output states of the plurality of predetermined power generation devices belonging to the power generation device group Procedure and
A transmission procedure for transmitting the output control information to the corresponding plurality of predetermined power generation devices, and
In the determination procedure, the output control information is determined according to a difference between an output state of the power generation device group in an output control time zone and an output state of the plurality of predetermined power generation devices belonging to the power generation device group. Is.

Or on your computer,
Determination to determine output control information of the plurality of predetermined power generation devices based on a first index regarding the output state of the power generation device group and a second index regarding the output states of the plurality of predetermined power generation devices belonging to the power generation device group Procedure and
A transmission procedure for transmitting the output control information to the corresponding plurality of predetermined power generation devices, and
In the determination procedure, the output control information is determined according to a difference between a first index related to the output state of the power generation device group and a first index related to the output state of the power generation device group different from the power generation device group. belongs to.

Or on your computer,
A determination procedure for determining output control information of a plurality of predetermined power generation devices belonging to the power generation device group, based on an index relating to an output state of the power generation device group;
A transmission procedure for transmitting the output control information to the corresponding plurality of predetermined power generation devices, and
In the determination procedure, the output control information is determined according to a difference between an index related to an output state of the power generation device group and an index related to an output state of a power generation device group different from the power generation device group. .

Or on your computer,
Based on an index related to output states of a plurality of first power generation devices belonging to the power generation device group and an index related to output states of a plurality of second power generation devices different from the plurality of first power generation devices belonging to the power generation device group. A determination procedure for determining output control information of the plurality of first power generators;
A transmission procedure for transmitting the output control information to the corresponding first power generation devices, and
In the determination procedure, the output control information is determined according to a difference between an output state of the plurality of first power generation devices and an output state of the plurality of second power generation devices in an output control time period.

Or on your computer,
Determination to determine output control information of the plurality of predetermined power generation devices based on a first index regarding the output state of the power generation device group and a second index regarding the output states of the plurality of predetermined power generation devices belonging to the power generation device group Procedure and
A transmission procedure for transmitting the output control information to the corresponding plurality of predetermined power generation devices, and
In the determining procedure, the first power generation amount set based on the reference power generation amount of the power generation device group in a predetermined time zone and at least one of the number of suppression times or the suppression time of the power generation device group in the elapsed time zone. At least one of one index, a reference power generation amount of the plurality of predetermined power generation devices belonging to the power generation device group in the predetermined time zone, and a suppression frequency or a suppression time of the plurality of predetermined power generation devices in the elapsed time zone The output control information is determined according to a difference from the second index set based on the one.

  According to the present invention, it is possible to suppress the output of each power generator so as to maintain fairness.

It is the figure which showed the electric power generation control apparatus A of 1st Embodiment of this invention. 5 is a flowchart for explaining the operation of the power generation control device A. It is the figure which showed one modification of 1st Embodiment of this invention. It is the figure which showed the control apparatus B of 2nd Embodiment of this invention. 3 is a flowchart for explaining an operation of a control device B. It is the figure which showed one modification of 2nd Embodiment of this invention. It is the figure which showed 3rd Embodiment of this invention. It is a figure for demonstrating operation | movement of 3rd Embodiment of this invention. It is the figure which showed the control system 100 of 4th Embodiment of this invention. 4 is a diagram for explaining the operation of the control system 100. FIG. 3 is a flowchart for explaining the operation of the control system 100. It is a figure showing the power supply-demand relationship. 4 is a flowchart for explaining the operation of the power generation control device 2; It is the figure which showed control system 100A of 5th Embodiment. It is a figure for demonstrating operation | movement of 100 A of control systems. 3 is a flowchart for explaining the operation of the control device 11; 4 is a flowchart for explaining the operation of the target power generation control device 2; It is the figure which showed control system 100B of 6th Embodiment. It is a figure for demonstrating operation | movement of the control system 100B.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1A is a diagram illustrating a power generation control device A according to the first embodiment of the present invention.
The power generation control device A controls the power generation device connected to the power system. Hereinafter, the power generation device controlled by the power generation control device A is also referred to as a “controlled power generation device”. The power generation device to be controlled is an example of a predetermined power generation device.
The power generation device to be controlled is, for example, a power generation device (renewable power source) that generates power using renewable energy. Examples of the renewable energy power source include a solar power generation device, a wind power generation device, a small hydropower generation device, a geothermal power generation device, a tidal power generation device, and a biomass power generation device. Hereinafter, the solar power generation device and the wind power generation device are also referred to as “PV device” and “WT (Wind Turbine) device”, respectively. The renewable energy source is not limited to the above-described device, and can be changed as appropriate. Further, the power generation device to be controlled may be any power generation device capable of suppressing power generation in a time zone where power generation suppression is required, such as a fuel cell other than a renewable energy power source or a gas turbine power generation device.

  The power generation control device A includes a communication unit A1 and a control unit A2.

The communication unit A1 receives output suppression information for controlling the power generation device to be controlled.
The output suppression information is an example of fairness index and output control information.
The output suppression information is determined based on the first index related to the output suppression state in the power generation device group to which the plurality of power generation devices belong, and the second index related to the output suppression state of the power generation device to be controlled. The output suppression state is an example of an output state.
Here, the output suppression state and the output state are, for example, power generation amount and power generation suppression amount, power generation amount upper limit value (output upper limit value), and on / off state of the device in the power generation device group and the power generation device. The output control time, the power sales profit as a result of the power control and the power sales loss.
The first index is an example of a reference index. The second index is an example of an individual index.
Here, the power generation device to be controlled may or may not belong to the power generation device group.
Hereinafter, it is assumed that the power generation device to be controlled belongs to the power generation device group.
In consideration of the first index and the second index, the power generation device group is a power generation device group composed of renewable energy power sources belonging to the same renewable energy power source category. This is desirable from the viewpoint of fairness. In the same renewable energy power category, when the power source having the same upper limit value (rated value or contracted capacity) of the same output power is targeted for the first index or the second index, This is desirable from the viewpoint of fairness because it can reflect the difference in the absolute value of the suppression power that varies depending on the upper limit city.

In the present embodiment, as the first index, an index that decreases in value as the degree of output suppression in the entire power generation device group increases is used. As the second index, an index that decreases in value as the degree of output suppression in the power generation device to be controlled increases is used.
The first index and the second index are determined based on, for example, the power generation amount of each power generator belonging to the power generator group.
For example, the first index is an output suppression time zone with respect to a reference power generation amount of the power generation device group in a predetermined time zone (for example, an elapsed time zone or a unit time zone in the output suppression time zone). It is the ratio of the power generation amount of the power generation device group in the elapsed time zone. The output suppression time zone is an example of an output control time zone.
Hereinafter, the “elapsed time zone in the output suppression time zone” is simply referred to as “elapsed time zone”. The “elapsed time zone” may be an accumulated time zone of each elapsed time zone among the plurality of output suppression time zones implemented in the past.
The second index is a ratio of the power generation amount of the control target power generation device in the elapsed time zone to the reference power generation amount of the control target power generation device in the predetermined time zone.
Here, as the reference power generation amount of the power generation device group, for example, a total sum of values obtained by multiplying the upper limit value of the output power of each power generation device belonging to the power generation device group by the time length of the predetermined time period is used. As the reference power generation amount of the power generator to be controlled, for example, a value obtained by multiplying the upper limit value of the output power of the power generator to be controlled by the time length of the predetermined time zone is used.
Examples of the upper limit value of the output power of each power generator and the upper limit value of the output power of the power generator to be controlled are the rated value of the output power of each power generator and the rated value of the output power of the power generator to be controlled.
Note that the upper limit value of the output power of each power generation device and the upper limit value of the output power of the power generation device to be controlled are not limited to the rated values and can be changed as appropriate. For example, the upper limit value of the output power of each power generation device and the upper limit value of the output power of the power generation device to be controlled are the upper limit value on the contract of the output power of each power generation device and the upper limit value on the contract of the output power of the control target. Good. Here, the upper limit value in the contract is, for example, the upper limit value of the output power of the power generation apparatus contracted between the manager of the power generation apparatus (for example, PPS) and the manager of the power system (for example, the power company). (For example, contract capacity).

Note that, as the first index, an index that increases as the degree of output suppression in the entire power generation apparatus group increases, and as the second index, the value increases as the degree of output suppression in the controlled power generation apparatus increases. An increasing index may be used.
For example, as the first index, in the elapsed time zone with respect to the reference power generation amount of the power generation device group in a predetermined time zone (for example, the elapsed time zone in the output suppression time zone or the unit time zone) A ratio of the suppressed power amount of the power generation device group may be used. Then, as the second index, a ratio of the suppression power amount of the control target power generation device in the elapsed time zone to the reference power generation amount of the control target power generation device in the predetermined time zone may be used.
Here, for example, a value obtained by subtracting the power generation amount of the power generation device group in the elapsed time zone from the reference power generation amount of the power generation device group in the elapsed time zone is used as the suppression power amount of the power generation device group. Then, as the suppressed power amount of the control target power generation device, for example, the power generation amount of the control target power generation device in the elapsed time zone is subtracted from the reference power generation amount of the control target power generation device in the elapsed time zone. A value is used.

The output suppression information is, for example, the first so that the difference between the output suppression state in the power generation device group in the output suppression time zone and the output suppression state in the power generation device to be controlled in the output suppression time zone is small. It is determined by the external device based on the index and the second index. Hereinafter, the difference is also referred to as “state difference”.
For example, when the degree of output suppression in the power generation apparatus to be controlled specified by the second index is larger than the degree of output suppression in the entire power generation apparatus group specified by the first index, the external device At the next power generation suppression opportunity, output suppression information that reduces the degree of output suppression in the power generation device to be controlled is determined.
Further, when the degree of output suppression in the power generation device to be controlled specified by the second index is smaller than the degree of output suppression in the entire power generation device group specified by the first index, the external device At the next power generation suppression opportunity, output suppression information that increases the degree of output suppression in the power generation device to be controlled is determined.
In addition, the degree of output suppression in the power generation device to be controlled specified by the second index is the same (same level) as the degree of output suppression in the entire power generation device group specified by the first index The external device determines the output suppression information without changing the degree of output suppression in the power generation device to be controlled at the next power generation suppression opportunity.

In the present embodiment, the output suppression information indicates the power generation amount upper limit value of the power generation device to be controlled. Here, the power generation amount upper limit value is an example of an output upper limit value. In this case, the larger the degree of output suppression, the smaller the power generation amount upper limit value of the power generator to be controlled.
When the output suppression amount required for the power generation device group is constant over the output suppression time zone, the external device increases the difference between the first index and the second index so that the state difference becomes smaller. The output suppression information for increasing the change range of the power generation amount upper limit value is determined. The output suppression amount is an example of an output control amount.
Note that the information indicated by the output suppression information is not limited to the power generation amount upper limit value, and can be changed as appropriate, such as output suppression time.
The external device transmits the output suppression information to the power generation control device A. The communication unit A1 receives output suppression information from the external device.

  The control unit A2 controls the output of the power generation device to be controlled based on the output suppression information received by the communication unit A1.

Next, the operation will be described.
FIG. 1B is a flowchart for explaining the operation of the power generation control device A.
The communication unit A1 receives the output suppression information (step S201). Subsequently, the communication unit A1 outputs the output suppression information to the control unit A2.
When receiving the output suppression information, the control unit A2 controls the output of the power generation device to be controlled based on the output suppression information (step S202). In this embodiment, control part A2 suppresses the electric power output to the electric power grid | system from the electric power generating apparatus of control object to below the electric power generation amount upper limit which output suppression information shows.

Next, the effect of this embodiment will be described.
In this embodiment, communication part A1 receives the output suppression information in which the output suppression state in the power generation device to be controlled and the output suppression state in the power generation device group including other power generation devices are reflected. The relationship between the output suppression state between the power generation device to be controlled and the power generation device group reflected in the output suppression information represents the difference in the output suppression state between the power generation device to be controlled and another power generation device. For this reason, control part A2 can improve the fairness of the output suppression between electric power generating apparatuses by controlling the output of the electric power generating apparatus of control object based on the output suppression information in which this difference was reflected.

  The output suppression information is determined based on the first index and the second index so that the difference between the output suppression state in the power generation device group and the output suppression state in the power generation device to be controlled becomes small. is there. For this reason, control part A2 can improve the fairness of the output suppression between electric power generating apparatuses by controlling the output of the electric power generating apparatus of control object based on this output suppression information.

  In addition, the output suppression information is controlled as the difference between the first index and the second index is larger so that the state difference is smaller when the output suppression amount required for the power generation device group is constant over the output suppression time period. This is information for increasing the change range of the power generation amount upper limit value of the target power generation apparatus. For this reason, control part A2 can improve the fairness of the output suppression between power generators with high precision by controlling the output of the power generator set to be controlled based on this output suppression information.

Next, a modification of this embodiment will be described.
When the output suppression information is repeatedly transmitted each time it is updated, the communication unit A1 may repeatedly receive the output suppression information. Then, the control unit A2 may control the output of the power generation device to be controlled based on the latest output suppression information among the output suppression information received by the communication unit A1. In this case, the output of the power generation device to be controlled can be controlled based on the latest output suppression information.

  The control unit A2 may control the output of the power generation device to be controlled based on the latest output suppression information at a time interval equal to or less than the reception interval of the output suppression information in the communication unit A1. For example, when the power generation device to be controlled is a regenerative energy power source, the output of the power generation device itself to be controlled may fluctuate in a short time depending on weather conditions. By performing output control of the power generation device to be controlled at a time interval that is less than or equal to the reception interval of the output suppression information, it is possible to cope with fluctuations in the output of the power generation device itself to be controlled.

  The communication unit A1 may transmit the power generation amount of the power generation device to be controlled to the transmission source of the output suppression information. In this case, the communication unit A1 may transmit the power generation amount of the power generation device to be controlled to the transmission source of the output suppression information at a time interval equal to or less than the reception interval of the output suppression information. In this case, the latest power generation amount of the power generation device to be controlled is reflected in the latest output suppression information, and the accuracy of power generation suppression control can be improved.

  As the standard power generation amount of the power generation device group, the estimated power generation amount of the power generation device group in the predetermined time zone (the amount that can theoretically generate power in the corresponding time zone) is used, The estimated power generation amount of the power generation device to be controlled in the predetermined time zone (the amount that can theoretically generate power in the corresponding time zone) may be used. Hereinafter, the estimated power generation amount is also referred to as a power generation possible amount.

  As the first index, the ratio of the power sales revenue according to the power generation amount of the power generation device group in the elapsed time zone to the reference power sales revenue of the power generation device group in the predetermined time zone may be used. At this time, as a second index, the ratio of the power sales revenue corresponding to the power generation amount of the controlled power generation device in the elapsed time zone to the reference power sales revenue of the controlled power generation device in the predetermined time zone is May be used.

  As an example of the standard power sales revenue of the power generation device group, the unit power selling price in the power generation device is obtained by multiplying the upper limit value of the output power of each power generation device belonging to the power generation device group by the time length of the predetermined time zone. The sum of the multiplied values is given. In addition, as an example of the standard power sales revenue of the control target power generation device, a value obtained by multiplying the upper limit value of the output power of the control target power generation device by the predetermined time is multiplied by the unit power sales price of the control target power generation device. Value.

The power generation control device A may determine the output suppression information based on the first index and the second index, and may control the output of the power generation device to be controlled based on the determined output suppression information.
FIG. 1C is a diagram illustrating an example of the power generation control device AA that determines the output suppression information based on the first index and the second index.
The power generation control device AA includes a determination unit AA1 and a control unit AA2.
The determination unit AA1 determines the output suppression information based on the first index and the second index. As a method for determining output suppression information in the determination unit AA1, for example, the method for determining output suppression information in the external device described above is used.
The determining unit AA1 may receive the first index and the second index from the above-described external device, or may receive the first index from the external device and generate the second index.
The control unit AA2 controls the output of the power generation device to be controlled based on the output suppression information determined by the determination unit AA1. The control method of the output of the power generation device to be controlled by the control unit AA2 is the same as the control method of the output of the power generation device to be controlled by the control unit A2, for example.
More specifically, the power generation control device AA generates output suppression information (an example of output control information) based on the received first index and the received or generated second index. Then, based on the output suppression information, the power generation control device AA controls the output of the power generation device to be controlled.
According to this modification, it is not necessary for the external device to determine the output suppression information, so that the load on the external device can be reduced.
In this modification, when the interval for receiving the first index is T1, and the interval for executing the power generation control based on the output suppression information determined based on the first index and the second index is T2, T1> T2 It is desirable to satisfy the relationship.
For example, when the control unit AA2 performs power generation control at a time interval T2 shorter than the reception interval T1 of the first index, the determination unit AA1 uses the latest first index and second index at the time interval T2 to output suppression information. To decide.
Since the first index determined by a plurality of power generation device groups is an index as a whole, it does not change at short intervals, but the second index for each power generation device changes in a short time such as weather conditions. Therefore, by performing power generation control at T2 shorter than T1, power generation control according to the actual power generation state of the power generation device can be performed. Therefore, it is possible to perform power generation control with high accuracy.
Therefore, it is preferable to perform power generation control of the power generation control device by creating output suppression information based on the latest first index and the second index at that time each time power generation control is performed.

(Second Embodiment)
FIG. 2A is a diagram illustrating a control device B according to the second embodiment of the present invention.
The control device B functions as an example of the external device described in the first embodiment, for example.
The control device B includes a processing unit B1 and a communication unit B2.

The processing unit B1 is an example of a determination unit.
The processing unit B1 determines output suppression information of each power generation device belonging to the power generation device group based on the first index and the second index described in the first embodiment. Here, the second index exists for each power generation device belonging to the power generation device group. The power generation device group is the same as the power generation device group described in the first embodiment.
The processing unit B1 determines, for each power generation device belonging to the power generation device group, a difference between the output suppression state in the power generation device group in the output suppression time zone and the output suppression state in the power generation device in the output suppression time zone (state difference The output suppression information is determined on the basis of the first index and the second index so as to be small.
In the present embodiment, when the output suppression amount required for the power generation device group is constant over the output suppression time zone, the processing unit B1 performs the first operation so that the state difference is reduced for each power generation device of the power generation device group. As the difference between the index and the second index increases, output suppression information that increases the amount of change in the power generation amount upper limit value of the power generation device is determined.
The processing unit B1 may receive, generate, or determine the first index and the second index from another device. For example, when the aggregator holds the control device B, an example of the other device is a command device of a central power supply command station held by an electric power company.
For example, the processing unit B1 determines the first index and the second index by the method described in the first embodiment. In this case, the processing unit B1 receives the power generation amount (power generation amount in the elapsed time zone) of each power generation device belonging to the power generation device group via the communication unit B2. Further, the processing unit B1 holds in advance constants necessary for determining the first index and the second index (for example, the upper limit value of output power of each power generation device and a predetermined time).
The communication unit B2 transmits the output suppression information determined by the processing unit B1 to the power generation device corresponding to the output suppression information.

Next, the operation of this embodiment will be described.
FIG. 2B is a flowchart for explaining the operation of the control device B.
The processing unit B1 determines the output suppression information based on the first index and the second index of the power generation device so that the state difference is small for each power generation device belonging to the power generation device group (step S401).

Here, an example of step S401 will be described.
The processing unit B1 performs the following operation for each power generation device belonging to the power generation device group.
When the degree of output suppression in the power generation device specified by the second index is greater than the degree of output suppression in the entire power generation device group specified by the first index, the processing unit B1 Output suppression information that reduces the degree of output suppression is determined.
Further, when the degree of output suppression in the power generation device specified by the second index is smaller than the degree of output suppression in the entire power generation device group specified by the first index, the processing unit B1 Output suppression information that increases the degree of output suppression in the apparatus is determined.
Also in the present embodiment, as in the first embodiment, the output suppression information indicates the power generation amount upper limit value of the power generation device. In this case, the larger the degree of output suppression, the smaller the power generation amount upper limit value of the power generator to be controlled. Note that the output suppression information is not limited to the power generation amount upper limit value, and can be appropriately changed such as the output suppression time.
At this time, if the power generation amount upper limit value (output suppression amount) required for the entire power generation device group is determined in the output suppression time zone, the processing unit B1 determines that the total power generation amount upper limit value of each power generation device is the power generation device. Each output suppression information is determined so that it may become below the power generation amount upper limit of the whole group. Here, it is assumed that the power generation amount upper limit value of the entire power generation device group is constant, for example, in the output suppression time zone. Note that the power generation amount upper limit value may be changed within the output suppression time zone. In addition, the time slot | zone which divided | segmented the output suppression time slot | zone may be used as a predetermined time slot | zone.

  Subsequently, the processing unit B1 transmits each output suppression information to the corresponding power generation device via the communication unit B2 (step S402).

  Each power generation device, when receiving the output suppression information, suppresses the power output from the power generation device to the power system to be equal to or lower than the power generation amount upper limit value indicated by the output suppression information.

Next, the effect of this embodiment will be described.
In this embodiment, processing part B1 is based on the 1st parameter | index regarding the output suppression state in a power generation device group, and the 2nd parameter | index regarding the output suppression state of each power generation device which belongs to a power generation device group. Determine output suppression information. The relationship between the first index and the second index represents the difference in the output suppression state between the entire power generation device group and the individual power generation devices. For this reason, this difference is reflected in each output suppression information. Therefore, if each power generator suppresses the output based on the output suppression information, the fairness of the output suppression between the power generators can be improved.

The processing unit B1 determines the output suppression information based on the first index and the second index so that the state difference is small for each power generation device belonging to the power generation device group.
For this reason, if each power generator suppresses the output based on the output suppression information, the difference in output suppression between the power generators becomes small, and the fairness of the output suppression between the power generators can be improved.

When the output suppression amount required for the power generation device group is constant over the output suppression time zone, the processing unit B1 has a large difference between the first index and the second index so that the state difference is small for each power generation device. The output suppression information that increases the range of change of the power generation amount upper limit value of the power generation device is determined.
For this reason, it becomes possible to improve the fairness of the output suppression between power generators with high precision because each power generator suppresses an output based on these output suppression information.

Next, a modification of this embodiment will be described.
The control device B may control the power generation device based on the output suppression information determined by the processing unit B1.
FIG. 2C is a diagram illustrating an example of a control device BB that controls the power generation device based on the output suppression information determined by the processing unit B1. In FIG. 2C, the same components as those shown in FIG. 2A are denoted by the same reference numerals.
Control device BB includes a processing unit B1 and a control unit BB2.
Control part BB2 controls the electric power generating apparatus corresponding to the output suppression information based on the output suppression information determined by process part B1. For example, the control unit BB2 directly controls the power generation device corresponding to the output suppression information for each output suppression information determined by the processing unit B1.
As the control method of each power generation device using the output suppression information in the control unit BB2, the control method of each power generation device using the output suppression information in the control unit A2 described in the first embodiment is used. It is done.
For example, the control device BB provided in the external device creates output suppression information (an example of output control information) for each power generation device based on the first index and the second index for each power generation device.
Then, the external device having the control device BB directly controls the plurality of power generation devices based on the output suppression information. That is, the external device including the control device BB remotely controls the outputs of the plurality of power generation devices.
According to this modification, the control device BB can directly control each power generation device.

(Third embodiment)
FIG. 3 is a diagram illustrating a control system according to a third embodiment of the present invention. 3, the same components as those shown in FIG. 1A are denoted by the same reference numerals.
This control system includes a plurality of power generation control devices A and a control device C.
The plurality of power generation control devices A are divided into a plurality of groups. In the present embodiment, the plurality of power generation control devices A are divided into two groups, a first group D1 and a second group D2. The number of groups is not limited to “2”, but may be a plurality.
Each of the power generation control devices A belonging to the first group D1 uses a PV device as a power generation device to be controlled. On the other hand, each of the power generation control devices A belonging to the second group D2 uses a WT device as a power generation device to be controlled.
A plurality of PV devices used in the first group (hereinafter simply referred to as “PV device group”) and a plurality of WT devices used in the second group (hereinafter simply referred to as “WT device group”) are respectively It is an example of a power generator group.
Note that the power generation device group used in the first group and the power generation device group used in the second group belong to different categories (in this embodiment, the solar power generation device and the wind power generation device) of the renewable energy power source. desirable. However, the power generation device group used in the first group and the power generation device group used in the second group may belong to the same category regarding the power source.

In this embodiment, each output suppression information is determined so that the difference of each suppression becomes small between "PV apparatus group" and "WT apparatus group" which are different categories.
In the present embodiment, the first index and the second index are used separately for each category of the renewable energy power source, that is, for each of the PV device group and the WT device group. As the first index and the second index, for example, the first index and the second index described in the first embodiment and the second embodiment are used. Hereinafter, the first index and the second index in the PV device group are referred to as “first index A” and “second index A”, respectively, and the first index and the second index in the WT device group are respectively referred to as “first index”. B ”and“ second index B ”.

The control device C includes a processing unit C1 and a communication unit C2.
The processing unit C1 determines the output suppression information belonging to the PV device group based on the first index A of the PV device group and the second index A of the PV device group. Further, the processing unit C1 determines the output suppression information belonging to the WT device group based on the first index B of the WT device group and the second index B of the WT device group.
At this time, the processing unit C1 determines each output suppression information according to the difference between the first index A of the PV device group and the first index B of the WT device group.
The communication unit C2 transmits the output suppression information determined by the processing unit C1 to the power generation control device A corresponding to the output suppression information.

Next, the operation of this embodiment will be described.
FIG. 4 is a flowchart for explaining the operation of the present embodiment.
Here, for simplicity, each PV device belonging to the PV device group is a solar power generation device having a contract capacity of 2 MW, and each WT device belonging to the WT device group is a wind power generation device having a contract capacity of 2 MW. And Each PV device and each WT device is not limited to a device having a contract capacity of 2 MW, and can be changed as appropriate.

The processing unit C1 performs power generation suppression on the PV device group and the WT device group in a certain output suppression time zone where power generation suppression is necessary, and then the first index A and the first in the implemented output suppression time zone. The index B is compared.
Then, the processing unit C1 sets the first index so that the difference between the first index A in the output suppression time zone and the first index B in the output suppression time zone becomes small in the power generation suppression in the next output suppression time zone. Each output suppression information is determined using A, 1st parameter | index B, 2nd parameter | index A, and 2nd parameter | index B (step S601).

For example, when the degree of output suppression for the entire PV device group specified by the first index A is greater than the degree of output suppression for the entire WT device group specified by the first index B, the processing unit C1 In the next opportunity to suppress power generation, the degree of output suppression in the entire PV device group is reduced (after adjusting the first index A so that the degree of output suppression in the entire PV device group is reduced). In the first embodiment, the first index A and the second index A are used for the output suppression information of each PV apparatus, and the first index B and the second index B are used for the output suppression information of each WT apparatus. And the method described in the second embodiment.
Further, when the degree of output suppression in the entire PV device group specified by the first index A is smaller than the degree of output suppression in the entire WT device group specified by the first index B, the processing unit C1 In the next opportunity of power generation suppression, after increasing the degree of output suppression for the entire PV device group (after adjusting the first index A so that the degree of output suppression for the entire PV device group increases) ), The first index A and the second index A are used for the output suppression information of each PV electric device, and the first index B and the second index B are used for the output suppression information of each WT device. It is determined by the method described in the form or the second embodiment.
Here, in the adjustment process described above, the processing unit C1 may adjust the first index B instead of the first index A, or may adjust both the first index A and the first index B. .
In addition, the degree of output suppression in the entire PV device group specified by the first index A is the same as (same level) as the degree of output suppression in the entire WT device group specified by the first index B. In the case of being small, without adjusting each index, the first index A and the second index A are used for the output suppression information of each PV electric device, and the first index B and the second for the output suppression information of each WT apparatus. Using the index B, it is determined by the method described in the first embodiment or the second embodiment.

Subsequently, the communication unit C2 transmits the output suppression information determined by the processing unit C1 to the power generation control device A corresponding to the output suppression information (step S602).
The output suppression method of the power generation device (PV device, WT device) based on the output suppression information in the power generation control device A is the same as the method described in the first embodiment.

Next, the effect of this embodiment will be described.
The processing unit C1 determines each output suppression information according to the difference between the first index A of the PV device group and the first index B of the WT device group.
The first index A of the PV device group indicates the degree of output suppression in the entire PV device group, and the first index B of the WT device group indicates the degree of output suppression in the entire WT device group. For this reason, the difference of each 1st parameter | index means the difference of the grade of the output suppression of the whole PV apparatus group and the whole WT apparatus group.
Therefore, since each output suppression information is determined according to the difference of each 1st parameter | index, each output suppression information can be determined according to the difference of the level of output suppression with the whole PV apparatus group and the whole WT apparatus group, It becomes possible to improve the fairness among renewable energy sources. For this reason, it becomes possible to implement power generation suppression with high fairness regardless of the type of power generation device.

Next, a modification of this embodiment will be described.
In the present modification, the processing unit C1 determines each output suppression information based on a difference in total power generation amount between a reference period (for example, one year) between two power generation device groups in a situation where power generation is not suppressed. .
For example, in the power generation suppression in the next output suppression time zone, the processing unit C1 determines that the difference between the first index A in the output suppression time zone and the first index B in the output suppression time zone is the difference in the total power generation amount. Each output suppression information is determined using the first index A, the first index B, the second index A, and the second index B so as to be smaller within a range that is equal to or greater than the corresponding predetermined reference value.

As an example, when the power generation device group used in the first group and the power generation device group used in the second group belong to the same category regarding the power source, the following cases are conceivable.
For example, let the same category be a solar power generation source. For example, the first group is a solar power generation group of cluster 1 (Niigata Prefecture), and the second group is a solar power generation group of cluster 2 (Miyazaki Prefecture). In this case, there is a possibility that the annual power generation amount differs between the cluster 1 and the cluster 2 in a situation where the power generation is not suppressed. For example, the annual power generation amount of cluster 1 may be larger than that of cluster 2.
At this time, when control is performed so that the fairness of output suppression between the cluster 1 and the cluster 2 is improved with the same index setting as in the third embodiment, the processing unit C1 includes the first index A and the first index B. The control is performed to allow the difference between the first index A and the first index B up to a certain value.
In this example, the processing unit C1 performs control so that the suppression amount and suppression ratio of the cluster 1 are smaller than those of the cluster 2. As a result, it is possible to improve the fairness taking into account the regional difference in annual power generation (corresponding to the capacity utilization rate).

(Fourth embodiment)
FIG. 5 is a diagram showing a control system 100 according to the fourth embodiment of the present invention.
The control system 100 includes a control device 1 and a plurality of power generation control devices 2. The control system 100 controls a plurality of PV (solar power generation) devices 3 corresponding to the plurality of power generation control devices 2. FIG. 5 shows an example in which the power generation control device 2 corresponds to the PV device 3 on a one-to-one basis, but the correspondence relationship between the power generation control device 2 and the PV device 3 is not limited to one-to-one, One-to-many can be appropriately changed.

The PV device 3 is an example of a power generation device and a renewable energy power source. A PV device group 3a configured by a plurality of PV devices 3 is an example of a power generation device group.
The power generation device is not limited to the PV device 3 and can be changed as appropriate. For example, a WT (wind power generation) device may be used as the power generation device.
Moreover, some PV devices 3 in the PV device group 3a may be changed to power generation devices (for example, WT devices) other than the PV device 3.

Each PV device 3 is connected to the power system 4.
In the present embodiment, the upper limit value of the electric power that each PV device 3 outputs to the electric power system 4 is determined in advance by a contract. Hereinafter, the upper limit value of the output power determined by the contract is also referred to as “contract capacity [W]”.
Each PV device 3 includes a solar panel that converts sunlight into direct current (electric power), and a PCS (Power Conditioning System). The PCS converts direct current power from the solar panel into alternating current power and adjusts the level of the alternating current power.

  The electric power system 4 includes a thermal power plant 4a and a pumped storage power plant 4b. A load 5 is also connected to the power system 4. In FIG. 5, the load 5 is shown as a virtual load (customer) obtained by virtually integrating a plurality of devices (power demand generating devices) that consume power supplied from the power system 4. In the present embodiment, an unillustrated renewable energy source (for example, a WT device or geothermal power generation) other than the PV device 3, an unillustrated nuclear power plant, and an unillustrated hydroelectric power plant are connected to the power system 4. Suppose that

  The control device 1 is under the management of an administrator (for example, a power company) that manages the power supply / demand balance in the power system 4. The manager who manages the power supply / demand balance is not limited to the power company and can be changed as appropriate. In the present embodiment, it is assumed that the control device 1 is under the control of an electric power company.

The control device 1 includes a communication unit 1a and a processing unit 1b.
The communication unit 1a communicates with each power generation control device 2, the thermal power plant 4a, and the pumped storage power plant 4b.
For example, the communication unit 1a performs the following communication.
The communication unit 1a receives the actual power generation amount of the thermal power plant 4a and the pumped storage power plant 4b. The communication unit 1a transmits an instruction regarding power generation to the thermal power plant 4a. The communication unit 1a transmits an instruction regarding power generation or pumping operation (operation for pumping water used for power generation with a pump) to the pumped storage power plant 4b.
The communication unit 1 a receives the power generation amount of the PV device 3 corresponding to the power generation control device 2 from each power generation control device 2. The communication unit 1a outputs the power generation amount of the PV device 3 to the processing unit 1b.
The communication unit 1a transmits the output suppression information for controlling the output suppression of each PV device 3 determined by the processing unit 1b to the power generation control device 2 corresponding to the PV device 3 that is the target of the output suppression information.

The processing unit 1b is an example of a determination unit.
The processing unit 1b determines the output suppression information of each PV device 3 in order to balance power supply and demand in the power system 4.
The processing unit 1b receives the actual power generation amount of each PV device 3 (hereinafter also referred to as “power generation actual amount”) from the communication unit 1a.
The processing unit 1b determines a first index related to the output suppression state in the PV device group 3a and a second index related to the output suppression state in each PV device 3 based on the actual power generation amount of each PV device 3. .
The processing unit 1 b determines output suppression information for each PV device 3 based on the first index and the second index of the PV device 3.

The plurality of power generation control devices 2 and the plurality of PV devices 3 are under the control of a plurality of PPSs. Each PPS may manage one power generation control device 2 or a plurality of power generation control devices 2.
Each PV device 3 corresponding to each power generation control device 2 is an example of a predetermined power generation device. Accordingly, there is a predetermined power generation device for each power generation control device 2. The actual power generation amount of each PV device 3 is measured by the measurement unit 6 corresponding to the PV device 3. The measuring unit 6 is a smart meter, for example. Note that the PV device 3 may include the measurement unit 6.
Each power generation control device 2 includes a communication unit 2a and a control unit 2b. Each power generation control device 2 may include a measurement unit 6.
The communication unit 2a communicates with the control device 1.
The communication unit 2 a transmits the actual power generation amount of the PV device 3 measured by the measurement unit 6 to the control device 1. The communication unit 2a receives the output suppression information from the control device 1. In addition, as a form of reception of the output suppression information, a form in which the power generation control apparatus 2 passively receives the output suppression information transmitted from the control apparatus 1 (Push), or the power generation control apparatus 2 actively controls the control apparatus. The form which receives output suppression information by pulling 1 (requesting output suppression information) is mentioned.
The control unit 2b controls the output of the PV device 3 based on the output suppression information.
Note that the power generation control device 2 may be incorporated in the corresponding PV device 3. The PV device 3 in which the power generation control device 2 is incorporated is an example of a power generation device or a power generation device.

Next, the operation will be described.
FIG. 6 is a diagram for explaining the operation of the control system 100. In FIG. 6, the thermal power plant and the pumped-storage power plant are collectively represented as “thermal power / hydropower source”, and the power generation control device 2 is omitted.

First, the operation at the start of suppression by the control system 100 will be described.
FIG. 7 is a flowchart for explaining the operation at the start of suppression by the control system 100.
The processing unit 1b of the electric power company, for the time zone from 0:00 to 24:00 on the next day, for example, at 9:00, the demand amount of all the consumers (load 5) in the jurisdiction of the power system 4 to be controlled, The power generation amount of the renewable energy power source is predicted (step S701). Note that the prediction time is not limited to 9 o'clock and can be changed as appropriate.
In addition, in order to predict the demand amount of all consumers and the amount of power generated by renewable energy sources, the forecast values such as weather information such as weather, temperature, humidity, and wind speed are processed as necessary information. Although it is necessary to obtain the part 1b, in FIG. 5, the route and the source are not shown. The weather information can be obtained from, for example, the Japan Meteorological Agency.
FIG. 8 is a diagram showing the power supply-demand relationship in the time zone from 0:00 to 24:00 on the next day, taking into account the prediction result in step S701.
In order to realize a stable power supply, it is necessary to suppress the power supply amount (power generation amount) in a time zone in which the power supply amount (power generation amount) exceeds the power demand amount.
When the amount of power supplied by a renewable energy power source is suppressed in an electric power system to which a renewable energy power source such as a PV device is connected, it is first necessary to suppress the amount of power supply other than the renewable energy power source in accordance with the priority power supply regulations.
Here, in the power supply and demand state shown in FIG. 8, the PV device is generated after 10:00 even after the generation of demand by suppressing the output of thermal power generation, etc., or pumping up pumping (pumping operation) in accordance with the priority power supply regulations. 3 is predicted to generate surplus power. For this reason, the processing unit 1b determines that output suppression (power generation suppression) in the PV device 3 is necessary (step S702). In addition, when generation | occurrence | production of the surplus electric power resulting from the PV apparatus 3 is not estimated, the process part 1b judges that the output suppression in the PV apparatus 3 is unnecessary (step S702).
When the output suppression in the PV device 3 is necessary, the processing unit 1b determines to perform the output suppression of the PV device 3.

The output suppression of the PV device 3 is performed by the following procedure.
First, the processing unit 1b reconfirms whether output suppression in the PV device 3 is necessary based on the power demand on the day of suppression and the trend and prediction of power supply.
Hereinafter, an example of the reconfirmation method will be described.
On the day of suppression, the processing unit 1b monitors the trend of power demand based on the measured value (for example, updated every 30 minutes) of the power demand amount of all consumers (load 5) and its predicted value. Here, the measured value of the power demand amount of all the consumers (load 5) is transmitted to the control apparatus 1 from the power meter (for example, smart meter) of each consumer. In addition, the update interval of the measured value of the power demand amount of all consumers (load 5) is not limited to 30 minutes and can be changed as appropriate.
In addition, the processing unit 1b also monitors the trend of power supply based on the measured value of the amount of power generation and the estimated value of the power source without the measuring device for the renewable energy power source such as the PV device.
The processing unit 1b determines whether surplus power due to the PV device 3 is generated based on power demand and power supply trends and predictions. This determination corresponds to reconfirmation.
This determination is performed, for example, continuously every 30 minutes on the same day (the update interval of determination is not limited to 30 minutes, and can be appropriately changed to a time longer than 30 minutes, such as 1 hour or 15 minutes) Is).
If the processing unit 1b determines that surplus power due to the PV device 3 is not generated, the processing unit 1b does not suppress the output of the PV device 3. On the other hand, if it judges that the surplus electric power resulting from the PV apparatus 3 will generate | occur | produce, the process part 1b will perform the output suppression of the PV apparatus 3. FIG.

  Next, the operation when it is determined that the output suppression of the PV device 3 is executed as a result of reconfirmation will be described. In the following, as an example of this operation, an operation when it is determined that there is a high possibility that surplus power due to the PV device 3 is generated in the time zone from 10 o'clock to 15 o'clock as of 9:30 on that day will be described. To do. In this case, the time zone from 10:00 to 15:00 is the “output suppression time zone”.

The processing unit 1b decides to implement power generation suppression in such a manner that the output power amount of the PV device group 3a at 10 o'clock is maintained during the subsequent time zone (output suppression time zone) until 15:00 (step S1). S703).
Here, the output power amount of the PV device group 3a at 10 o'clock is an example of the power generation permission amount (output suppression amount) in the output suppression time zone. Further, in this power generation suppression, the power generation permission amount (output suppression amount) required for the PV device group 3a is constant over the output suppression time zone (10:00 to 15:00).

Subsequently, the processing unit 1b determines a divided time zone Tt _j by dividing a time zone of 5 hours from 10:00 to 15:00 every hour. In this case, each segment time zone from 10 o'clock is Tt ₀ , Tt ₁ , Tt ₂ , Tt ₃ , Tt ₄ . Here, the length of the segment time zone is not limited to one hour and can be changed as appropriate.

Subsequently, the processing unit 1b first determines power generation output suppression for all (total number N) of the PV devices 3 belonging to the PV device group 3a in the segment time zone Tt ₀ (time zone from 10:00 to 11:00). Hereinafter, each of the total number N of PV devices 3 is also referred to as a PV device 3n (n is 1 to N).
This time, the power generation output suppression is performed to maintain the power generation amount of the PV device group 3a in the segment time zone Tt ₀ at the power generation amount of the PV device group 3a _{at 10 o'clock} (for example, at P10).

The processing unit 1b determines an initial individual index P ′ _{0, n} = 0.3 30 minutes before 10 o'clock (9:30) (step S704). A method for determining P ′ _{0, n} = 0.3 will be described later.
Subsequently, the processing unit 1b distributes the initial individual index P ′ _{0, n} = 0.3 and the segment time zone information I ₀ indicating the segment time zone Tt ₀ from the communication unit 1a to each power generation control device 2 ( Step S705). In the initial individual index P ′ _{0, n} , “0” corresponds to the segment time zone Tt _{j (j = 0)} , and “n” corresponds to n of the PV device 3n.
Here, the timing for determining the initial individual index P ′ _{0, n} = 0.3 is not limited to 30 minutes before the start time of the segment time zone Tt ₀ . This timing can be appropriately changed on condition that the transmission timing of the initial individual index P ′ _{0, n} = 0.3 and the segment time zone information I ₀ is before the start time of the segment time zone Tt ₀ .
In each power generation control device 2, the control unit 2 b receives the initial individual indicator P ′ _{0, n} = 0.3 and the segment time zone information I ₀ via the communication unit 2 a, and then receives the initial individual indicator P ′ _{0, n.} = 0.3 and the segment time zone information I ₀ are held.

FIG. 9 is a flowchart for explaining the operation of the power generation control device 2 that has received the initial individual indicator P ′ _{0, n} = 0.3 and the segment time zone information I ₀ .
When the start time (in this case, 10:00) indicated by the segment time zone information I ₀ is reached, the control unit 2b sets the power generation amount upper limit value of the corresponding PV device 3 to the contracted capacity [W] of the PV device 3 as an initial individual The power generation amount multiplied by the index P ′ _{0, n} = 0.3 (= the power generation amount upper limit value W ₀ ⁿ [W] in the segment time zone Tt ₀ ) is set. Subsequently, the control unit 2b controls the output power amount of the corresponding PV device 3 so that the output power amount of the corresponding PV device 3 does not exceed the power generation amount upper limit value W ₀ ⁿ [W] (step S901). .
For example, the control unit 2b controls the PCS in the corresponding PV device 3 so that the output power amount of the corresponding PV device 3 does not exceed the power generation amount upper limit value W ₀ ⁿ [W]. 3 is controlled.
The control unit 2b repeats step S901 until the end time (in this case, 11:00) indicated by the segment time zone information I ₀ in a cycle T2 (T2 is about 0.4 seconds). The period T2 is equal to or less than the time length of the segment time zone (1 hour in this example). Note that the period T2 can be appropriately changed within a range equal to or less than the time length of the segment time zone, but it is desirable that the cycle T2 is sufficiently shorter than the segment time zone because the control accuracy is improved.
Even if the output of each PV device 3 is suppressed at the common individual index P ′ _{0, n} = 0.3, there is a possibility that the output of each PV device 3 varies depending on the weather conditions. This variation affects the performance of output suppression.

  On the other hand, in the control device 1, the processing unit 1 b receives the power generation amount information indicating the actual power generation amount of each PV device 3 in the cycle T3 (T3 = about 30 minutes, T2 <T3 <the time length of the segment time zone). Data are continuously collected from the communication unit 2a of the control device 2. Considering the accuracy of control, the period T3 is desirably 1/10 or less of the time length of the segment time zone.

In the present embodiment, the following two are assumed as individual indexes.
The first is a planned individual index P ′ _{J, n} that determines a schedule value for power generation suppression (a value that determines the degree of power generation suppression) for a certain segment time zone Tt _J. The initial individual index P ′ _{0, n} = 0.3 described above also belongs to the planned individual index.
The second is a performance individual index P _{J, n} that recalculates the schedule value for power generation suppression in a certain time zone Tt _J with the actual power generation performance. These two individual indicators (plan individual indicator and actual individual indicator) are distinguished by the presence or absence of a dash.
The plan individual index other than the initial individual index among the plan individual indices is an example of output suppression information.
The performance individual index is an example of a second index.

The initial individual index P ′ _{0, n} = 0.3 described above is derived as follows, for example.
A situation in which surplus power caused by the PV device 3 is generated after 10:00 at the time of 8 o'clock is predicted, and the generated power at 10 o'clock is predicted at the time of 9 o'clock, the total generated power α in the PV device group 3a It is assumed that after 10 o'clock, surplus power is generated when the total generated power in the PV device group 3a becomes larger than the total generated power α. Therefore, it turned out that after 10 o'clock, it is necessary to maintain the total generated power in the PV device group 3a at the total generated power α.
In this situation, the value calculated by dividing the value of the power α by the total contracted capacity of the PV device group 3a is 0.3 (= P ′ _{0, n} ).
The power generation amount upper limit value of the PV device 3 is a power generation amount obtained by multiplying the contracted capacity [W] of the PV device 3 by the initial individual index P ′ _{0, n} = 0.3. For this reason, the smaller the initial individual index P ′ _{0, n} is, the more the output of the PV device 3 is suppressed.

Next, the operation after the start of suppression by the control system 100 will be described.
Here, some parameters are defined as follows.
M _n : Contract capacity [3] of PV device 3n
T _j : Suppression time zone
Gj ≧ 0: Total power generation [W] of the PV device group 3a permitted in the suppression time zone Tj
W _j ⁿ ≧ 0: Power generation amount upper limit [W] in the suppression time zone T _j of the PV device 3n

である。
処理部１ｂは、次の区分時間帯Ｔt₁では、以下の数２にて決定される基準指標P₁を用いる。ここで、基準指標は、第１指標の一例である。

この指標（P₁）は、全ＰＶ装置３（ＰＶ装置群３ａ）の定格出力に対する実際の出力の平均を意味する。
ここで、処理部１ｂは、他の基準指標として例えば通常の算術平均に相当する

を用いてもよい。
一方、処理部１ｂは、以下の数４にて決定される実績個別指標Ｐ_0,nを用いる。

ここで、抑制時間帯T₁に出力抑制をかけない場合に発電するであろうＰＶ装置群３ａの発電量（ここでは、契約容量で発電すると仮定する）に対して、抑制時間帯T₁に発電量上限値Ｗ₁ ⁿで各ＰＶ装置３ｎの発電を抑制した場合のＰＶ装置群３ａの実際の発電量の割合を、近似的に、以下のQ_1,nとする。

そして、処理部１ｂは、抑制時間帯のうちの経過済みの時間帯（この場合、抑制時間帯T₀）におけるＰＶ装置３間の実績個別指標Ｐ_0,nのギャップを補正しつつ、基準指標P₁からの実績個別指標Ｐ_0,nのズレを最小化するように各W₁ ⁿを決定する。
最適化問題の形で表現すれば、処理部１ｂは、

の２つの式を解くことで得られたW₁ ¹，・・・，W₁ ⁿを、次の区分時間帯Ｔt₁における各ＰＶ装置３ｎの発電量上限値W₁ ⁿとする。 Processing unit 1b, 10:00 to 10:30 (original T ₀ to suppress the time zone T ₀ of the 10:00 to 11:00 and it is, considering information acquisition and processing times, the following T ₀ In the index calculation for the time zone, the past actual performance curve PV ⁿ (t) of the power generation amount of each PV device 3 in the range of 10:00 to 10:30 is used as a representative value). The actual curve PV ⁿ (t) is generated from the actual power generation amount of each PV device 3.
At this time, the actual power generation amount of the PV device 3n in the suppression time zone T ₀ is

It is.
Processing unit 1b, the next segment time period Tt _1, using the reference index P _1, which is determined by the following equation (2). Here, the reference index is an example of a first index.

This index (P ₁ ) means the average of the actual output with respect to the rated output of all the PV devices 3 (PV device group 3a).
Here, the processing unit 1b corresponds to, for example, a normal arithmetic average as another reference index.

May be used.
On the other hand, the processing unit 1b uses the performance individual index P _{0, n} determined by the following _equation 4.

Here, the power generation amount of the PV device group 3a that would power when not to apply output suppression suppression time period T ₁ with respect to (in this case, it is assumed that the power generation in the contract capacity), the inhibition time period T ₁ The ratio of the actual power generation amount of the PV device group 3a when the power generation of each PV device 3n is suppressed at the power generation amount upper limit value W ₁ ⁿ is approximately Q _{1, n} as follows.

Then, the processing unit 1b corrects the gap of the individual performance indicators P _{0, n} between the PV devices 3 in the elapsed time zone (in this case, the suppression time zone T ₀ ) of the suppression time zones _, while correcting the gap between the performance indicators P _{0, n.} Each W ₁ ⁿ is determined so as to minimize the deviation of the individual performance index P _{0, n} from P ₁ .
If expressed in the form of an optimization problem, the processing unit 1b

W ₁ ¹ ,..., W ₁ ⁿ obtained by solving these two equations are set as the power generation amount upper limit value W ₁ ⁿ of each PV device 3n in the next segment time zone Tt ₁ .

Processing unit 1b, the next segment time period Tt _1, segment showing plan and individual index P _{'1, n} is a value obtained by dividing the power generation amount upper limit value W ₁ ⁿ contract capacity M _n, the divided time zone Tt ₁ The time zone information I ₁ is distributed from the communication unit 1a to the corresponding power generation control device 2.
In each power generation control device 2, the control unit 2 b receives the plan individual index P ′ _{1, n} and the segment time zone information I ₁ via the communication unit 2 a, and then stores the past plan individual index and the past segment time. The band information is discarded, and the latest planned individual index P ′ _{1, n} and the divided time band information I ₁ are retained. When the control unit 2b reaches 11 o'clock, the power generation amount upper limit value of the corresponding PV device 3 is the power generation amount obtained by multiplying the contracted capacity [W] by the planned individual index P ′ _{1, n} (= in the segment time zone T ₁ ). The corresponding PV device 3 is controlled in real time at the cycle T2 so that the power generation amount upper limit value W ₁ ⁿ [W] The operation of the power generation control device 2 conforms to the operation shown in FIG.
On the other hand, the control device 1 continuously collects information indicating the power generation amount of each PV device 3n in the cycle T3.

を計算して求める。
処理部１ｂは、次の区分時間帯Ｔt₂では、以下の数９にて決定される基準指標P₂を用いる。

また、処理部１ｂは、以下の数１０にて決定される実績個別指標Ｐ_1,nを用いる。

また、処理部１ｂは、前の時間帯と同様に

を定義する。
そして、処理部１ｂは、基準指標P₁及び基準指標P₂からの、実績個別指標Ｐ_0,n及び実績個別指標Ｐ_1,nのズレを最小化するように各W₂ ⁿを決定する。
すなわち、今回の抑制では、処理部１ｂは、抑制対象時間帯全体での公平性を担保する観点から、過去の全時間帯における実際のズレを加味した上で、最適な抑制配分を行う。
このため、処理部１ｂは、

の２式を解くことで得られたW₂ ¹，・・・，W₂ ⁿを、次の区分時間帯Ｔt₂における各ＰＶ装置３ｎの発電量上限値W₂ ⁿとする。
以下、上述した処理が繰り返される。 Thereafter, the processing unit 1b, 10:30 to 11:30 the actual power generation amount of the PV device 3 in the suppression time zone T ₁ of the

Is calculated.
Processing unit 1b, the next segment time period Tt _2, using the reference index P _2, which is determined by the following equation (9).

Further, the processing unit 1b uses the performance individual index P _{1, n} determined by the following formula 10.

In addition, the processing unit 1b is similar to the previous time zone.

Define
Then, the processing unit 1b determines each W ₂ ⁿ so as to minimize a deviation between the actual individual index P _{0, n} and the actual individual index P _{1, n} from the reference index P ₁ and the reference index P ₂ .
That is, in the current suppression, the processing unit 1b performs an optimal suppression distribution in consideration of actual deviation in all past time zones from the viewpoint of ensuring fairness in the entire suppression target time zone.
Therefore, the processing unit 1b

W ₂ ¹ ,..., W ₂ ⁿ obtained by solving these two equations are set as the power generation amount upper limit value W ₂ ⁿ of each PV device 3n in the next segment time zone Tt ₂ .
Thereafter, the above-described processing is repeated.

の２式を解くことで得られたW_j ¹，・・・，W_j ⁿを、次の区分時間帯Ｔt_jにおける各ＰＶ装置３ｎの発電量上限値W_j ⁿとする。
なお、処理部１ｂは、最後の区分時間帯Ｔt₄については、その時間帯終了時（１５：００）、翌日以降の抑制に備えて、基準指標P₆に相当する値や実績個別指標P_5,nに相当する値を求める。その際、指標計算で用いる抑制時間帯Ｔ₅としての時間は、１４：００〜１５：００、を用いる。 If the process which determines the electric power generation amount upper limit mentioned above generally is represented, the process part 1b will be described.

W _j ¹ ,..., W _j ⁿ obtained by solving these two equations are set as the power generation amount upper limit value W _j ⁿ of each PV device 3n in the next segment time zone Tt _j .
The processing unit 1b, for the last segment time period Tt _4, during the time period ends (15:00), provided the next day after the suppression value and performance corresponding to the reference index P ₆ individual index P _{5 , Find} the value corresponding to _n . At that time, 14: 0 to 15:00 is used as the time as the suppression time zone T ₅ used in the index calculation.

  However, depending on the solar radiation, for example, when it is cloudy, each PV device 3n cannot always generate power at the upper limit of power generation, and can only generate power at a value below the upper limit. Control is performed with the upper limit of the amount as the upper limit.

Next, the effect of this embodiment will be described.
In this embodiment, feedback control using P _J and P ′ _{J, n} and P _{J, n} is repeated.
It is considered that there are multiple opportunities to suppress power generation, not just once a year, so the more the number of repetitions of the feedback suppression increases, the more the PV device 3 becomes, through multiple days that need to be suppressed. Fair restraint can be implemented.
In this method, conditions such as weather and temperature in the power generation suppression time zone differ for each PV device 3, but the PV devices 3 having the same rated power (or contract capacity) have the same power generation amount (power generation suppression amount). The feedback control is performed so that
Such control makes it possible to suppress power generation while maintaining fairness among the PV devices 3.

Next, a modification of this embodiment will be described.
In the present embodiment, an example of the data collection interval T3 = 30 minutes is shown. However, depending on the information communication environment, it is assumed that the power generation data can be collected more frequently.
For example, if T3 = 5 minutes, the suppression time zone T _{0 is set} to 10: 00-10: 55, and the processing unit 1b uses the power generation data every 5 minutes during this time in the next segment time zone Tt ₁ . P _j and P _{j, n} are determined. Further, the suppression time zone T _{1 is set} to 10: 55-11: 55, and the processing unit 1b determines P _j and P _{j, n} in the next segment time zone Tt ₂ with the power generation data every 5 minutes during this time. . This determination algorithm can be flexibly changed according to a change in the relationship between the time of the segment time zone _TJ and T3.

In the present embodiment, power generation suppression is determined on the suppression day, and 30 minutes before the suppression start time 10 o'clock, the fairness index (initial reference index) is obtained from each power generation control apparatus (each PV apparatus). An example of delivery to 3n) was shown.
However, the necessity of suppression is determined in advance such as the previous day, one week ago, one month ago, one year ago, etc., and a method of distributing the schedule on the day of suppression in advance (for example, the control device 1 schedules with the calendar) A method of distributing to the power generation control device 2 or a method in which the control device 1 holds a schedule together with a calendar and each power generation control device 2 obtains information from the control device 1 may be used.
For example, in a situation where the schedule is performed every day, when the time zone in which the suppression of a certain day (hereinafter referred to as “A day”) is considered necessary is 11: 00-14: 00, the processing unit 1b May operate as follows.
The processing unit 1b sets the power generation amount upper limit value W _J ⁿ of each PV device 3n at that time to, for example, 50% of the contracted capacity, and actually performs power generation suppression at 11: 00-14: 00 on the A day.
Then, the processing unit 1b performs the calculation performed based on the one-hour time window (segment time zone) in the third embodiment after the power generation suppression is performed by replacing the time window with 11: 00-14: 00. To do. For this reason, feedback is given to the determination of the power generation amount upper limit value W _J ⁿ in the suppression time zone of the next scheduled suppression date such as the next day. In this case, although it becomes fairness feedback on a daily basis, as the number of times of suppression increases, power generation suppression with fairness can be implemented. This may be done on a weekly or monthly basis.

In addition, the power generation upper limit W _J ^{n is set} to, for example, 0% of the contracted capacity, and “total number according to suppression” or “total time according to suppression” can be substituted as an index to ensure fairness. It is. This method has the merit of facilitating the implementation of power generation suppression, although the fairness itself is less accurate.

When the suppression execution time period is reached, the PCS output may be set immediately to the target value (power generation amount upper limit value W _J ⁿ ), or in order to avoid a sudden power generation amount change, for example, 10 The PCS output may be changed from the current value to the target value by taking about a minute. This is realized by changing the PCS setting to the target value over time, but this method is based on the coordination of power supply and demand adjustment with thermal power generation of the power system (when the output change of renewable energy power generation is abrupt This is effective in considering the possibility of following problems regarding output changes such as thermal power generation.

  Instead of the reference index and the individual performance index, the first index and the second index described in the first embodiment and the second embodiment may be used.

The power generation amount upper limit value W _J ⁿ may be used instead of the planned individual index. In this case, each power generation control device 2 performs real-time control of the corresponding PV device 3 at the cycle T2 so that the power generation amount upper limit value of the corresponding PV device 3 becomes the power generation amount upper limit value W _J ⁿ .

(Fifth embodiment)
In the fifth embodiment of the present invention, a photovoltaic power generation device (PV device) is assumed as a renewable energy power source of the same category as a control target, and a plurality of PV devices that are output suppression targets are set based on areas and contracted capacities. Dividing into groups (hereinafter, “group” is referred to as “cluster”), output suppression of the PV device is executed in cluster units.

In this case, the fifth embodiment controls the power generation output of the PV device so that the output restraint is fair among a plurality of PV devices having the same contract capacity range (for example, 500 kW or more). . The contract capacity is an example of the power generation amount upper limit value of the PV device.
In this case, a plurality of PV devices having a contract capacity in the same contract capacity range, or a plurality of PV devices having a contract capacity in the same contract capacity range in the same area belong to a plurality of PV devices. An example. The contract capacity is an example of a predetermined index.

The predetermined index used to identify a plurality of PV devices for which fairness of output suppression is made is not limited to the contract capacity and can be changed as appropriate.
For example, the rated output and power generation efficiency of the PV device 3 may be used as the predetermined index.
In addition, as a predetermined index, instead of a fixed index such as contract capacity, rated output, and power generation efficiency, a dynamic index (for example, the weather condition of the area where the PV device 3 is installed, the estimation of the PV device 3) (Power generation amount, past power generation amount, suppression amount, voltage fluctuation) may be used.

Also in the fifth embodiment, as in the third embodiment, the PV device is an example of a power generation device and a renewable energy power source. The power generation device is not limited to the PV device and can be changed as appropriate. For example, a WT device may be used as the power generation device.
Further, some of the plurality of PV devices belonging to the same cluster may be changed to a power generation device (for example, a WT device) other than the PV device.

FIG. 10 is a diagram illustrating a control system 100A according to the fifth embodiment. 10, the same components as those shown in FIG. 5 are denoted by the same reference numerals.
The main difference between the control system 100A of the fifth embodiment and the control system 100 of the fourth embodiment is that the control system 100A of the fifth embodiment replaces the control device 1 and the processing unit 1b shown in FIG. The control device 11 and the processing unit 1b1 are used.
Hereinafter, the difference of the control system 100A of the fifth embodiment from the control system 100 of the fourth embodiment will be mainly described.

The control system 100A includes a control device 11 and a plurality of power generation control devices 2.
The control device 11 includes a processing unit 1b1 and a communication unit 1a.
The processing unit 1b1 is an example of a determination unit.
The processing unit 1b1 determines the output suppression information of each PV device 3 in order to balance power supply and demand in the power system 4.
The processing unit 1b1 receives the actual power generation amount (power generation actual amount) of each PV device 3 from the communication unit 1a.
The processing unit 1b1 determines the first index related to the output suppression state in the PV device group 3a and the second index related to the output suppression state in each PV device 3 based on the actual power generation amount of each PV device 3. .
The processing unit 1b1 determines output suppression information for each PV device 3 based on the first index and the second index of the PV device 3.

Next, the operation will be described.
FIG. 11 is a diagram for explaining the operation of the control system 100A. In FIG. 11, the thermal power plant and the pumped storage power plant are collectively represented as “thermal power / hydraulic power”, and the cluster of PV devices is represented as “renewable power cluster”.
First, the processing unit 1b1 of the electric power company divides the plurality of PV devices 3 in the pipe of the power system 4 under its control into a plurality of clusters.
For example, the processing unit 1b1 divides the jurisdiction area of the power company into L (for example, 100) equally so that the center-to-center distance of each area (for example, Ykm × Ykm rectangle) is at least 10 km or more. Note that the size, shape, center-to-center distance, and number of L of each area can be changed as appropriate.
Subsequently, in each area, the processing unit 1b1 classifies the plurality of PV devices 3 in the area based on the contracted capacity of the PV devices 3.
In the present embodiment, the processing unit 1b1 classifies the PV device 3 into four categories: C1: 500kW or more, C2: less than 500kW to 50kW or more, C3: less than 50kW to 10kW or more, and C4: less than 10kW. To do.
As a result, L × 4 clusters can be formed. The classification method based on the contract capacity is not limited to four of C1 to C4, and can be changed as appropriate.
Then, the processing unit 1b1 assigns the order of E _{1 to} E _L to the area divided into L = 100 this time. The order of the areas may be set at random, or may be set so that the geographically close areas have a close order.
A PV device group (cluster) belonging to the classification C1 in each area is denoted as “ _{EL, C1} ”.
For this reason, for example, the clusters E _{2 and C 1} are configured by a plurality of PV devices 3 belonging to the area 2 and having a contract capacity of less than 500 kW to 50 kW or more.
The processing unit 1b1 provides priorities in the order of C1 to C4 in descending order of the contract capacity with respect to the classifications C1 to C4.
In the final cluster selection, the processing unit 1b1 selects E _{1, C1} , E _{2, C1} ,... E _{L, C1} , E _{1, C2} ,.

FIG. 12 is a flowchart for explaining the operation of the control device 11.
The processing section 1b1 of the electric power company is responsible for the demand amount of all customers (loads 5) in the jurisdiction of the power system 4 and the power generation amount of the renewable energy power source including all the PV devices 3 from 0:00 in the next week. Prediction until time is performed (step S1201). The forecast period can be changed as appropriate.
As a result of the prediction, even after generating demand by controlling the output of thermal power generation and pumping up pumped-storage power generation in accordance with the priority power supply regulations, from 11:00 to 15:00 on the Y day in one week. It is assumed that generation of surplus power due to the PV device is predicted.
Therefore, the processing unit 1b1 determines that output suppression in the PV device 3 is necessary (step S1202). In addition, when generation | occurrence | production of the surplus electric power resulting from a PV apparatus is not estimated, the process part 1b1 judges that the output suppression in the PV apparatus 3 is unnecessary (step S1202).
When the output suppression in the PV device 3 is necessary, the processing unit 1b1 determines to suppress the output of the PV device 3.

The output suppression of the PV device 3 is performed by the following procedure.
First, the processing unit 1b1 reconfirms whether output suppression in the PV device 3 is necessary based on the power demand on the suppression day and the power supply trend.
Hereinafter, an example of the reconfirmation method will be described.
On the day of Y, the processing unit 1b1 monitors the power demand trend based on the measured value (for example, updated every 15 minutes) of the power demand amount of all consumers (load 5) and its predicted value. Here, the measurement value of the power demand amount of all the consumers (load 5) is transmitted to the control apparatus 11 from the power meter (for example, smart meter) of each consumer. In addition, the update interval of the measured value of the power demand amount of all consumers (load 5) is not limited to 15 minutes, and can be changed as appropriate, such as 30 minutes.
The processing unit 1b1 also monitors the power supply trend for the renewable energy power source such as the PV device based on the measured value of the power generation amount and the estimated value for the power source without the measuring device.
The processing unit 1b1 determines whether or not surplus power due to the PV device 3 is generated based on the power demand and the power supply trend. This determination corresponds to reconfirmation.
If the processing unit 1b1 determines that surplus power due to the PV device 3 is not generated, the processing unit 1b1 does not execute the output suppression of the PV device 3. On the other hand, if it judges that the surplus electric power resulting from the PV apparatus 3 will generate | occur | produce, the process part 1b1 will perform the output suppression of the PV apparatus 3. FIG.

  Next, the operation when it is determined that the output suppression of the PV device 3 is executed as a result of reconfirmation will be described. In the following, as an example of this operation, an operation when it is determined that there is a high possibility that surplus power due to the PV device 3 is generated in the time zone from 11:00 to 15:00 at 10:00 will be described. In this case, the time zone from 11:00 to 15:00 is the “output suppression time zone”.

Processing part 1b1 determines implementation of power generation suppression of PV device 3 from 11:00.
The processing unit 1b1 first selects a control target cluster (step 1203). In this case, the processing unit 1b1 is initially 11:00 to 12:00 suppression time zone Ttt ₁ (Ttt ₁ = ₁ hour) to select a cluster (control target cluster) to control during.
Processing unit 1b1 is a time of 10:30, the priority suppression total estimate can power generation suppression in configured clusters in the selected cluster in order _ΣP m_total [W] it is required in the inhibition time period Ttt ₁ inhibition Until the _total amount Q _total [W] or more is reached, 1 or more and a minimum number of clusters are selected. In this example, it is assumed that clusters E1 _{, C1 to} E40 _{, C1} are selected as control target clusters.
In the cluster selection here, the minimum number of clusters satisfying _{ΣP m_total} ≧ Q _total is selected. Therefore, the processing unit 1b1 sets the power generation amount upper limit value of each PV device 3 in the control target cluster to 0 (complete suppression).
The power generation amount upper limit value = 0 of the PV device 3 is an example of output suppression information.
Then, at 10:45, the processing unit 1b1 sends the power generation amount upper limit value W ₁ ⁿ = to the power generation control device (hereinafter referred to as “target power generation control device”) 2 corresponding to each PV device 3n in the control target cluster. 0, deliver a suppression time zone information Itt ₁ illustrating the inhibition time period Ttt ₁ (step S1204).
Note that the timing for starting selection of the control target cluster is not limited to 30 minutes before the suppression time zone. This timing may be a timing sufficiently earlier than the start time of the suppression time zone and the time required for selecting the control target cluster and the time required for distributing the power generation amount upper limit value and the suppression time zone information. .
Further, the timing for distributing the power generation amount upper limit value and the suppression time zone information is not limited to 15 minutes before the suppression time zone. This timing may be any timing that is earlier than the time required for distribution of the power generation amount upper limit value and the suppression time zone information before the start time of the suppression time zone.
In each target power generation control device 2, when the control unit 2b receives the power generation amount upper limit value W ₁ ⁿ = 0 and the suppression time zone information Itt ₁ via the communication unit 2a, the power generation amount upper limit value W ₁ ⁿ = 0. And suppression time zone information Itt ₁ are held.

FIG. 13 is a flowchart for explaining the operation of the target power generation control device 2 that has received the power generation amount upper limit value W ₁ ⁿ = 0 and the suppression time zone information.
At the start time indicated by the suppression time zone information Itt ₁ (in this case, 11:00), the control unit 2b sets the corresponding PV device 3 so that the output of the corresponding PV device 3 becomes the power generation amount upper limit value W ₁ ⁿ = 0. Is controlled (step S1301). For example, the control unit 2b controls the corresponding PV device 3 by controlling the PCS in the corresponding PV device 3 so that the output of the corresponding PV device 3 becomes the power generation amount upper limit value W ₁ ⁿ = 0.
Control unit 2b, a step S1301, the period Tt2 (Tt2 is about 1 sec) is repeated until the end time indicated by the suppression time zone information Itt ₁ in (at this case 12). The period Tt2 is equal to or shorter than the time length of the suppression time zone (1 hour in this example). Note that the period Tt2 can be appropriately changed within a range equal to or less than the time length of the suppression time zone.

  On the other hand, when the power generation suppression is started, in the control device 11, the processing unit 1b1 sets the power generation amount information indicating the power generation amount of each PV device 3 in the cycle Tt3 (Tt3 = about 15 minutes, T3 ≦ T1). Data are continuously collected from the communication unit 2a of the power generation control device 2.

Next, the processing unit 1b1 newly selects a control target cluster at 11:30. In this embodiment, the suppression total amount estimated value ΣP _{m_total} [W] that can suppress power generation in a cluster group composed of clusters selected in order of priority is the value of the _total suppression amount Q _total [W] required in the suppression time period Ttt ₂ . Until this is the case, a minimum number of clusters of 1 or more is selected. This time, in addition to the cluster _{E 1, C1 ~E 40, C1} , until the cluster _{E 41, C1 ~E 67, C1} is the selected as the control target cluster.
Also in this cluster selection, the minimum number of clusters satisfying ΣP _{m_total} ≧ Q _total is selected. Therefore, the processing unit 1b1 sets the power generation amount upper limit value of each PV device 3 in the control target cluster to 0 (complete suppression).
Therefore, at 11:45, the processing unit 1b1 sends the power generation amount upper limit value W ₂ ⁿ = 0 and the suppression time zone to the power generation control device (target power generation control device) 2 corresponding to each PV device 3n in the control target cluster. to deliver the suppression time zone information Itt ₂ indicating the Ttt _2.
In each target power generation control device 2, when the control unit 2b receives the power generation amount upper limit value W ₂ ⁿ = 0 and the suppression time zone information Itt ₂ via the communication unit 2a, the power generation amount upper limit value W ₂ ⁿ = 0. And suppression time zone information Itt ₂ are held.
At the start time (in this case, 12:00) indicated by the suppression time zone information Itt ₂ , the control unit 2 b controls the PCS in the corresponding PV device 3 so that the output of the corresponding PV device 3 is the power generation amount upper limit value W. _The corresponding PV device 3 is controlled so that ₁ ⁿ = 0. Control unit 2b is repeated until the PV device 3 outputs control the end time indicated by the suppression time zone information Itt ₂ with a period Tt2 (at this case 13).
Thereafter, the selection of the control target cluster and the output suppression control are repeated until 15:00.
By repeating the selection of the control target cluster and the output suppression control, it is possible to prevent generation of surplus power due to the PV device 3 on the Y day.
In addition, in the selection method of the suppression target PV apparatus in this embodiment, the PV apparatus 3 once selected as the suppression target on the day of output suppression is basically based on the amount of the _total suppression amount Q _total [W] required. You may continue to choose until the day's suppression ends. For example, 11:00 to 12:00 of Q _total [W] 12 than: 00-13: 00 Q _total [W] it is large, further 13: 00-14: 00 Q _total of [W] of it is big, 14:00 to 15:00 of Q _total [W] is 13:00 to 14:00 of Q _total [W] less than the 11: 00-12: greater than 00 Q _total [W] In this case, the suppression target PV device 3 selected at 11:00 to 12:00 is continuously selected as the suppression target until approximately 11:00 to 15:00, and the suppression target PV device 3 of 13: 0 to 14:00 The number is the largest, and at 14:00 to 15:00, a selection is made such that some of the suppression target PV devices 3 are excluded from the suppression targets.

  In the next time (for example, the day after the Y day), the processing unit 1b1 preferentially selects the PV devices 3 (clusters) not selected this time in order of priority, and performs the above-described suppression.

を算出して決定する。
数１６に示した基準指標Ａは、分類C1の各ＰＶ装置３の積算抑制時間を考慮した総発電抑制量の平均値である。基準指標Ａは、第１指標の一例である。
ここで、n_C1は、分類C1に属する個別のＰＶ装置３を表す。分類C1に属するＰＶ装置３の総数はN_C1である。T_nC1は、ＰＶ装置n_C1の抑制実施時間である。M_nC1は、ＰＶ装置n_C1の契約容量である。W_TnC1 ^nC1は T_nC1における、発電量上限値である。今回 W_TnC1 ^nC1は０となっている。
また、処理部１ｂ１は、個別指標Ｂn_C1として、

を算出して決定する。個別指標Ｂn_C1は、第２指標の一例である。
なお、数１６および数１７に示した発電量上限値W_TnC1 ^nC1は、本来、個別ＰＶ装置３の総発電電力量となるべきなので、この部分は、個別ＰＶ装置３の実際の発電量で置き換えられるべきである。今回は、０であるため、簡単のためにW_TnC1 ^nC1（=0）とした。また、契約容量M_nC1は、各ＰＶ装置３の発電量推定値で置き換えられてもよい。
また、数１６および数１７において、総発電抑制量の平均値の代わりに、総発電量の平均値が用いられてもよい。
そして、処理部１ｂ１は、分類C1に属するＰＶ装置３の中から、制御対象のＰＶ装置３を決定する際、基準指標Ａと個別指標Ｂn_C1とを用いる。
本実施形態では、処理部１ｂ１は、基準指標Ａに対する分類C1の各ＰＶ装置３の個別指標Ｂn_C1の“正”の乖離の大きさ（基準指標Ａ−個別指標Ｂn_C1の値で正のとき）に応じて、乖離が大きいＰＶ装置３を以降の抑制実施の機会には、抑制対象として優先的に選択し、抑制実施を行う。このとき、処理部１ｂ１は、処理対象のＰＶ装置３に対して、引き続きW_TnC1 ^nC1を０とする抑制を実施する。ここで、W_TnC1 ^nC1は、出力抑制情報の一例である。
処理部１ｂ１は、基準指標Ａに対する分類C1の各ＰＶ装置における個別指標Ｂn_C1の乖離の大きさがゼロのとき（基準指標Ａ＝個別指標Ｂn_C1）、もしくは剥離の大きさが負の値であるとき（基準指標Ａ−個別指標Ｂn_C1が負に値のとき）は、個別指標Ｂn_C1に対応するＰＶ装置３を抑制対象として選択しない。
つまり、各ＰＶ装置３は個別指標Ｂn_C1の乖離の大きさがゼロ以下になるまでは抑制対象として選択される。 And after implementing the suppression described above several times, at the stage where all the PV devices 3 belonging to all the categories C1 to C4 are selected, for example, for the PV devices 3 belonging to the category C1 (total number N _C1 ), The processing unit 1b1 calculates the fairness state for the PV device to which the classification C1 belongs.
The processing unit 1b1 is a reference index A for the PV device group 3a-C1 configured by the PV devices 3 belonging to the classification C1.

Is calculated and determined.
The reference index A shown in Equation 16 is an average value of the total power generation suppression amount in consideration of the integration suppression time of each PV device 3 of the classification C1. The reference index A is an example of a first index.
Here, n _C1 represents an individual PV device 3 belonging to the classification C1. The total number of PV devices 3 belonging to the classification C1 is N _C1 . T _nC1 is the suppression execution time of the PV device n _C1 . M _nC1 is the contract capacity of the PV device n _C1 . W _TnC1 ^nC1 is the upper limit of power generation at T _nC1 . This time W _TnC1 ^nC1 is 0.
Further, the processing unit 1b1 uses the individual indicator Bn _C1 as

Is calculated and determined. The individual index Bn _C1 is an example of a second index.
Since the power generation amount upper limit value W _TnC1 ^nC1 _{shown in} ^Equations 16 and 17 should be the total power generation amount of the individual PV device 3, this part is replaced with the actual power generation amount of the individual PV device 3. Should be done. Since it is 0 this time, W _TnC1 ^nC1 (= 0) is used for simplicity. Further, the contract capacity M _nC1 may be replaced with the estimated power generation amount of each PV device 3.
Further, in the equations 16 and 17, the average value of the total power generation amount may be used instead of the average value of the total power generation suppression amount.
The processing unit 1b1 uses the reference index A and the individual index Bn _C1 when determining the PV apparatus 3 to be controlled from the PV apparatuses 3 belonging to the classification C1.
In the present embodiment, the processing unit 1b1 determines the magnitude of the “positive” deviation of the individual index Bn _C1 of each PV device 3 of the classification C1 with respect to the reference index A (when the value of the reference index A−the individual index Bn _C1 is positive) ), The PV device 3 having a large divergence is preferentially selected as the suppression target at the subsequent suppression execution opportunity, and the suppression is performed. At this time, the processing unit _1b1 continues to suppress the W _TnC1 ^nC1 to 0 for the PV device 3 to be processed. Here, W _TnC1 ^nC1 is an example of output suppression information.
When the magnitude of deviation of the individual index Bn _C1 in each PV device of classification C1 with respect to the reference index A is zero (reference index A = individual index Bn _C1 ), the processing unit 1b1 is a negative value. In some cases (when the reference index A-individual index Bn _C1 is a negative value), the PV device 3 corresponding to the individual index Bn _C1 is not selected as a suppression target.
That is, each PV device 3 is selected as a suppression target until the magnitude of the deviation of the individual index Bn _C1 becomes zero or less.

This time, it is assumed that the time zone that needs to be suppressed is from 10:00 to 15:00.
The processing unit 1b1 assigns a new priority to the PV devices 3 belonging to the classification C1 based on the above-described deviation amount for each area.
The processing unit 1b1 selects the PV device 3 for each area in the order of the new priorities and in the order of the numbers.
Also at this time, for simplification of control, the PV device 3 that is once selected as the suppression target on the day is continuously selected until the suppression of the day is completed so as to satisfy the required suppression amount.

  Note that the processing unit 1b1 sets a new priority order using the reference index A and the individual index B for the other classifications (C2 to C4) as in the classification C1, and then sets the new priority. The PV device 3 to be suppressed is determined according to the priority order.

Next, the effect of this embodiment will be described.
In the present embodiment, as described above, as the number of suppression executions increases, by selecting the PV device 3 that is the output suppression target using the fairness index (the reference index A and the individual index B), It becomes possible to implement power generation suppression that ensures fairness among the PV devices 3 belonging to the same classification (C1 to C4).

Next, a modification of this embodiment will be described.
In the present embodiment, the PV device 3 that has been selected as the suppression target once in the day of suppression execution is controlled so that it may be selected until the suppression of the day ends. Here, control may be performed in which the period during which the same PV device 3 is continuously selected is changed with a finer granularity such as a time unit instead of a day unit. In that case, what is necessary is just to perform the process performed every day in the said embodiment for every predetermined time. In this case, although the control is complicated, it is possible to implement suppression that satisfies fairness in a shorter period of time.

In the present embodiment, the processing unit 1b1 selects, for example, all the PV devices 3 belonging to the same category in the same area, and then selects all the PV devices 3 belonging to the same category in the next area. .
However, if the processing unit 1b1 selects a predetermined part of the PV devices 3 belonging to the same classification in the same area, the processing unit 1b1 may move to selection of the PV devices 3 belonging to the same classification in the next area.
For example, the processing unit 1b1 assigns numbers in the area to the PV devices 3 belonging to the same classification (C1 or the like), selects only 30% of the total number in order of the numbers, and PVs of the same classification in the next area Control such as shifting to selection of the apparatus 3 may be performed.
In such a case, for example, in the above embodiment was chosen only in suppression time Ttt ₁ to cluster _{E 1, C1 ~E 40, C1} , so selected to cluster E _{1, C1} ~E _{100, C1} . As a result, the geographical dispersibility of the PV device 3 to be suppressed is increased in the suppression implementation (in this embodiment, considering the leveling effect of photovoltaic power generation, the areas such that the distance between the centers of each area is at least 10 km or more. Can be implemented in a manner that promotes the leveling effect of photovoltaic power generation, which is effective in improving the stability of the power system.

Note that the processing unit _1b1 determines that the cluster is the power generation suppression total estimated value ΣP _{m_total} [W] of the cluster group (when the power generation of each PV device 3 is set to 0 in the corresponding time zone, the suppression from the total power generation estimated value Is selected in order of priority until the required _total suppression amount Q _total [W] is equal to or greater than the value of Q _total [W] J (where J is an integer equal to or greater than 2). Also good.
In this case, the processing unit 1b1 performs power generation suppression of the PV devices 3 in the suppression target cluster group as follows, for example.
First, the processing unit 1b1 _derives the power generation permission total amount P ′ _{m_total} of the cluster group by subtracting the necessary _total suppression amount Q _total from the power generation suppression total amount estimated value ΣP _{m_total} of the suppression target cluster group.
Subsequently, the processing unit _{1b1 calculates} a ratio (= _{P′m_total} / P _{T_total} ) between the power generation permission total amount P ′ _{m_total} of the suppression target cluster group and the total contract capacity P _{T_total} of the PV device 3 in the suppression target cluster group. To derive.
Subsequently, the processing unit _{1b1 uses the value obtained by multiplying the} ratio (= P ′ _{m_total} / P _{T_total} ) by the contract capacity M _n of the PV device 3 in the suppression target cluster group, and the power generation amount of the PV device 3 in the suppression target cluster group. Derived as the upper limit value W ⁿ .
Subsequently, the processing unit 1b1 uses the power generation amount upper limit value W ⁿ of the PV device 3 in the suppression target clusters, to implement the power generation suppression of PV device 3 in the suppression target clusters (in this case, an upper limit value Power generation of some percent of the contracted capacity is permitted, not zero).

Even when the storage battery is installed in the PV device 3 or when the storage battery and the PV device 3 are installed at a physical distance, the PV device 3 is virtually paired by pairing them. when viewed as features have been storage battery, the control unit 2b of the power generation control apparatus 2, upon receiving the power generation amount upper limit value W ^n, instead of suppressing the generation of the corresponding PV device 3, the corresponding PV device 3 You may charge to a storage battery the part which exceeded the electric power generation amount upper limit among electric power generation amounts. Also in this case, output from the PV device 3 to the power system 4 can be suppressed. In the pairing of the storage battery and the PV device 3, a combination of a plurality of storage batteries and a plurality of PV devices 3, a combination of one storage battery and a plurality of PV devices 3, a combination of a plurality of storage batteries and a single PV device 3, etc. , Pairing in any combination is possible.
By performing such suppression a plurality of times, it becomes possible to accurately control the fairness of output suppression between the PV devices 3 belonging to the same classification.

  Note that the external device of the first embodiment and the control devices of the second to fifth embodiments are not necessarily managed by an electric power company, and may be managed by a PPS, IPP, aggregator, or the like.

(Sixth embodiment)
In the sixth embodiment of the present invention, in the situation where the administrator of the PV device is profited by supplying the output of the PV device to the power system, the fairness of the loss caused by the output suppression of the PV device is considered. Thus, output suppression of the PV device is performed.

In the sixth embodiment, as in the fourth embodiment, the PV device is an example of a power generation device and a renewable energy power source. The power generation device is not limited to the PV device and can be changed as appropriate. For example, a WT device may be used as the power generation device.
Further, some of the plurality of PV devices belonging to the same cluster may be changed to a power generation device (for example, a WT device) other than the PV device.

FIG. 14 is a diagram illustrating a control system 100B of the sixth embodiment. In FIG. 14, the same components as those shown in FIG.
The main difference between the control system 100B of the sixth embodiment and the control system 100 of the fourth embodiment is that the control system 100B of the sixth embodiment replaces the control device 1 and the processing unit 1b shown in FIG. The control device 12 and the processing unit 1b2 are used.
Hereinafter, the difference of the control system 100B of the sixth embodiment from the control system 100 of the fourth embodiment will be mainly described.

The control system 100B includes a control device 12 and a plurality of power generation control devices 2.
The control device 12 is managed by an aggregator.
The control device 12 includes a processing unit 1b2 and a communication unit 1a.
The processing unit 1b2 is an example of a determination unit.
The processing unit 1b2 determines the output suppression information of each PV device 3 in order to balance the power supply and demand in the power system 4.
The processing unit 1b2 receives and acquires the actual power generation amount (power generation result amount) of each PV device 3 from the communication unit 1a.
The processing unit 1b2 determines a first index related to the output suppression state in the PV device group 3a and a second index related to the output suppression state in each PV device 3 based on the actual power generation amount of each PV device 3. .
The processing unit 1b2 determines the output suppression information for each PV device 3 based on the first index and the second index of the PV device 3.

Next, the operation will be described.
FIG. 15 is a diagram for explaining the operation of the control system 100B. In FIG. 15, the thermal power plant and the pumped-storage power plant are collectively represented as “thermal power / hydropower source”.

First, the operation at the start of suppression by the control system 100B will be described.
In the electric power company, for the time zone from 0:00 to 24:00 on the next day, for example, at 9:00 on the previous day, the demand amount of all customers (load 5) in the jurisdiction of the power system 4 under the jurisdiction and all PV devices 3 are included. Estimate the amount of power generated by energy sources. Note that the prediction time is not limited to 9 o'clock and can be changed as appropriate.
As a result of forecasting, generation of surplus power due to PV equipment is predicted after 10 o'clock even after generating demand by suppressing output of thermal power generation and pumping pumping (pumping operation) in accordance with the priority power supply regulations Suppose that
For this reason, the electric power company decides to implement part of necessary power generation suppression on the PV device 3 managed and controlled by the aggregator. Here, a plurality of aggregators are conceivable. However, since suppression can be performed with the same method for any aggregator, detailed description of suppression execution for each aggregator is omitted.
At 9:00 on the day of suppression, the processing unit 1b2 managed by the aggregator reduces the contracted capacity to 50% or less for the PV device 3 managed and controlled by the aggregator from the power company in the time zone from 10:00 to 15:00. Suppose you receive a request to reduce power generation.
Since the suppression time zone is notified from 10 o'clock to 15 o'clock, the processing unit 1b2 divides the time zone of 5 hours every hour and sets the division time zone as Tt _j . In this time, the divided time zones from 10:00 are Tt ₀ , Tt ₁ , Tt ₂ , Tt ₃ , and Tt ₄ . Here, the length of the segment time zone is not limited to one hour and can be changed as appropriate.
This time, the power generation suppression of the power generation amount of the PV device group 3a of the piecewise time period Tt ₀ to less than 50% of the contract capacity is performed.

The processing unit 1b2 sends the planned individual index P ′ _{0, n} = 0.5 and the segment time zone information I ₀ indicating the segment time zone Tt ₀ to the communication unit 1a 15 minutes before 10 o'clock (9:45). To each power generation control device 2.
Here, the timing for determining the planned individual index P ′ _{0, n} = 0.5 is not limited to 15 minutes before the start time of the segment time zone Tt ₀ . This timing can be changed as appropriate on the condition that the transmission timing of the planned individual index P ′ _{0, n} = 0.5 and the segment time zone information I ₀ is before the start time of the segment time zone Tt ₀ .
In each power generation control device 2, the control unit 2 b receives the planned individual index P ′ _{0, n} = 0.5 and the divided time zone information I ₀ via the communication unit 2 a, and then the planned individual index P ′ _{0, n} = 0.5. And the divided time zone information I ₀ are held.

When the start time (in this case, 10 o'clock) indicated by the segment time zone information I ₀ is reached, the control unit 2b sets the power generation amount upper limit value of the corresponding PV device 3 to the contracted capacity [W] and the planned individual index P ′ _0, The PCS in the corresponding PV device 3 is controlled with the period T2 so that the power generation amount multiplied by _n = 0.5. Control unit 2b performs the end time indicating the control segment time zone information I ₀ (at this case 11).
Even if the output of each PV device 3 is suppressed at the common planned individual index P ′ _{0, n} = 0.5, there is a possibility that the output of each PV device 3 varies depending on the weather conditions. This variation affects the performance of output suppression.

  On the other hand, in the control device 12, the processing unit 1b2 generates power generation amount information indicating the actual power generation amount of each PV device 3 in the cycle Ts3 (Ts3 = about 5 minutes, T2 <Ts3 <time length of the segment time zone). Data are continuously collected from the communication unit 2a of the control device 2.

を算出して決定する。基準指標は、第１指標の一例である
また、処理部１ｂ２は、実績個別指標として、

を算出して決定する。実績個別指標は、第２指標の一例である。
また、処理部１ｂ２は、

を算出する。
処理部１ｂ２は、その後、各区分時間帯での計画個別指標Ｐ’_J,nを算出する際に、逐次フィードバックを与えながら、区分時間帯Ｔt_jにおいて、

の２つの式を解くことで得られるW_j ¹，・・・，W_j ⁿを、区分時間帯Ｔt_jにおける各ＰＶ装置３ｎの発電量上限値W_j ⁿとする。 In the present embodiment, the processing unit 1b2 controls the output of each PV device 3 so as to ensure the fairness of the power sales revenue obtained by each PV device 3.
Here, the processing unit 1b2 holds a unit power selling price Zn of each PV device 3 in advance.
The processing unit 1b2 is used as a reference index.

Is calculated and determined. The reference index is an example of a first index. Further, the processing unit 1b2 is a performance individual index,

Is calculated and determined. The performance individual index is an example of a second index.
In addition, the processing unit 1b2

Is calculated.
After that, the processing unit 1b2 gives sequential feedback when calculating the planned individual index P ′ _{J, n} in each segment time zone, while in the segment time zone Tt _j ,

W _j ¹ ,..., W _j ⁿ obtained by solving the two equations are set as the power generation amount upper limit value W _j ⁿ of each PV device 3n in the segment time zone Tt _j .

The processing unit 1b2 is a divided time indicating the planned individual index P ′ _{j, n} that is a value obtained by dividing the power generation amount upper limit value W _j ⁿ by the contract capacity M _n and the divided time zone Tt _j in each divided time zone Tt _j. The band information I _j is distributed from the communication unit 1 a to the corresponding power generation control device 2. The plan individual index is an example of output suppression information.
Since the operation of each power generation control device 2 is the same as that in the third embodiment, a description thereof will be omitted.

Next, the effect of this embodiment will be described.
As the number of repetitions of the above-described feedback control increases, fair suppression based on the economic index can be performed between the PV devices 3.

Next, a modification of this embodiment will be described.
As a reference index, the average value of the power sales profit / loss according to the amount of suppressed power in the elapsed time zone of the output suppression time zone of each power plant belonging to the power plant group is used. The power sale profit / loss according to the amount of restrained power in the elapsed time period of the may be used.

Here, in the fourth to sixth embodiments, a cycle (hereinafter referred to as “T ₁₀ ”) for transmitting output suppression information (plan individual index and power generation amount upper limit value) from the control device related to the suppression time zone is as follows. It may be determined as follows.
When there is a time T that requires a certain suppression control, in order to perform feedback as many as M times as much as possible to divide the suppression control time as T / M As the cycle T _{10 to} be performed, T ₁₀ = T / M, and as the cycle T ₁₀ , the suppression control time is divided, and the suppression control is performed using a fairness index that is different for each cycle T ₁₀ .
On the other hand, the period T ₁₀ must be a period longer than the time necessary for performing the optimization calculation process,
(> 15 minutes) On the other hand, the period for rescheduling the generator start / stop is the same or shorter (<1h if fair weather fluctuations are difficult) Degree) is desirable. However, the period T ₁₀ may be a daily basis. In that case, from the viewpoint of stability, there is a problem that the power system side is burdened or the power generation efficiency of the renewable energy power source is deteriorated, but there is an advantage that the control is simplified.

Here, a combination example of the first index and the second index will be collectively shown. In the following, “renewable power source n” is used as a configuration corresponding to the PV device 3n.
The “renewable power source” that is the target of the index calculation here refers to a renewable energy source that must consider fairness. Even when the expression “all renewable energy sources” is used, consider fairness. It should be noted that renewable energy sources that do not have to be excluded are excluded (for example, in some cases, only renewable power generation of 500 kW or more, which is expected to suppress power generation, is considered, Renewable power sources of less than 500kW do not need to be suppressed in the first place, so they are not considered in the index calculation.)
Σ is an integration up to the total number N for n. In the following, the expression rated value or contracted capacity is used. For renewable energy, for example, in the case of photovoltaic power generation, the contracted capacity of the solar panel may be larger than the rated value of the PCS. This is because the contracted capacity may be better than the rated value of the PCS because it may be small.

<Combination example 1>
Total suppression time (average value) for suppressing renewable energy sources.
First index = X / Y
However,
X = Σ (integral value of suppression time し た t _n “X _n ” in which the renewable power source n is suppressed) [h]
Y = total number of renewable energy sources n = N
Second index = X _n
X _n = integration value of suppression time when suppression of renewable energy source n is performed ∫t _n [h]
Combination example 1 is applied to the first to fourth embodiments, for example.

<Combination example 2>
The ratio of the amount of power generated during the suppression time T to the amount of power generated at the rated power or contracted capacity for the suppression time T.
First index = X / Y
However,
X = Total power generation amount after suppression of all renewable energy sources at suppression time T [Wh]
= Σ (power generation amount “X _n ” after suppression at suppression time T after suppression of renewable energy source n) [Wh]
Y = (Rated value of renewable energy source n or total of contracted capacity) × Suppression time T [Wh]
= Σ (Rated value of renewable energy source n or contracted capacity) x suppression time T [Wh]
Second index = X _n / Y _n
However,
X _n = Power generation amount [Wh] after the suppression of the renewable energy source n at the suppression time T of the renewable energy source n
Y _n = (Rated value of renewable energy n or contracted capacity) × Suppression time T [Wh]
Note) The suppression time T may be set as the integral suppression time ∫t (= integral value of the elapsed suppression time).
This index is used when comparing between renewable power sources that have the same suppression (integration) suppression time (this means that the integral suppression time is equal to ∫t _n for the renewable energy source n regardless of n. In the following, this is also expressed as ∫t _n = ∫t).
Combination example 2 is applied to the first to fourth embodiments, for example.

<Combination example 3>
The ratio of the amount of power generated during the integral suppression time ∫t to the amount of power generated at the rated or contracted capacity per unit time.
First index = X / Y
However,
X = Total power generation amount [Wh] after suppression of all renewable energy sources in integral suppression time ∫t
= Sigma (total power generation X _n after suppression of renewable energy power n in the integration suppression time ∫T _n)
Y = Σ (Rated value of renewable energy source n or contracted capacity) × (1 hour) [Wh]
Second index = X _n / Y _n
However,
X _n = total power generation amount [Wh] after suppression of the renewable energy source n in the integration suppression time ∫t _n
Y _n = (Rated value or contracted capacity of renewable energy source n) × (1 hour) [Wh]
Note) The integration suppression time ∫t may be the suppression time T.
This index is used when comparing between renewable energy power sources in which suppression (integration) suppression times are equal.
Combination example 3 is applied to the first to fourth embodiments, for example.

<Combination example 4>
The ratio of the amount of power that has been suppressed during the suppression time T to the amount of power generated at the rated power or contracted capacity for the suppression time T.
First index = (Y−X) / Y
However,
X = Σ (power generation amount “X _n ” after suppression at the suppression time T of the renewable energy power source n) [Wh]
Y = Σ (Rated value of renewable energy source n or contracted capacity) × Suppression time T [Wh]
Second index = (Y _n −X _n ) / Y _n
However,
X _n = Power generation amount [Wh] after suppression at the suppression time T of the renewable energy source n
Y _n = (Rated value of renewable energy n or contracted capacity) × Suppression time T [Wh]
Note) The suppression time T may be the integration suppression time ∫t.
This index is used for comparison between power sources having the same suppression (integration) suppression time.
Combination example 4 is applied to, for example, the first to fourth embodiments.

<Combination example 5>
The ratio of the amount of power that has been suppressed during the integral suppression time ∫t to the amount of power that is generated at the rated or contracted capacity per unit time.
First index = (Y1-X) / Y
However,
X = sigma (total power generation _X n after suppression of renewable energy power n in the integration suppression time ∫t _n) [Wh]
Y1 = Σ (Rated value of renewable energy source n or contracted capacity × ∫t _n ) [Wh]
Y = Σ (Rated value of renewable energy source n or contracted capacity) × (1 hour) [Wh]
Second index = (Y _n1 −X _n ) / Y _n
However,
X _n = total power generation amount [Wh] after suppression of the renewable energy source n in the integration suppression time ∫t _n
Y _n1 = Rated value of renewable energy source n or contracted capacity × ∫t _n [Wh]
Y _n = (Rated value or contracted capacity of renewable energy source n) × (1 hour) [Wh]
Note) The integration suppression time ∫t may be the suppression time T.
This index is used when comparing between renewable energy power sources in which suppression (integration) suppression times are equal.
Combination example 5 is applied to the first to fourth embodiments, for example.

<Combination example 6>
The amount of power generated during the suppression time T of the renewable energy power source.
First index = X / Y
However,
X = Total power generation amount after suppression of all renewable energy sources at suppression time T [Wh]
= Σ (power generation amount “X _n ” after suppression at the suppression time T of the renewable energy source n) [Wh]
Y = total number of renewable energy sources n = N
Second index = X _n
= Power generation amount [Wh] after suppression at the suppression time T of the renewable energy source n
Note) The suppression time T may be set as the integral suppression time ∫t (= integral value of the elapsed suppression time).
This index is used when comparing between renewable energy power sources in which suppression (integration) suppression times are equal.
The combination example 6 is applied to the first to fourth embodiments, for example.

<Combination example 7>
The amount of power that has been suppressed during the integration suppression time ∫t of the renewable energy power source.
First index = (Y1-X) / Y
However,
X = sigma (total power generation _X n after suppression of renewable energy power n in the integration suppression time ∫t _n) [Wh]
Y1 = Σ (Rated value of renewable energy source n or contracted capacity × ∫t _n ) [Wh]
Y = total number of renewable energy sources n = N
Second index = (Y _n1 −X _n )
However,
X _n = total power generation amount [Wh] after suppression of the renewable energy source n in the integration suppression time ∫t _n
Y _n1 = Rated value of renewable energy source n or contracted capacity × ∫t _n [Wh]
Note) The integration suppression time ∫t may be the suppression time T.
This index is used when comparing between renewable energy power sources in which suppression (integration) suppression times are equal.
The combination example 7 is applied to the first to fourth embodiments, for example.

<Combination example 8>
When considering the fairness index, it is possible to consider not only the amount of generated power, which is a physical index, but also the power sales loss, which is an economic index. In this case, information on the unit power selling price Z _n [yen / kWh] that changes depending on the contract year of FIT (Feed-in Tariff: fixed price purchase system) is used (sixth embodiment).
Ratio of power sales revenue actually obtained by selling power at the restraint time T to the power sale revenue that would have been obtained if the power was generated with the rated power or contracted capacity at the restraint time T
1st index = P / Q
However,
P = Total electricity sales revenue after suppression of all renewable energy sources at suppression time T [yen]
= Σ (the amount of power generation “X _n ” × “Z _n ” after suppression at the suppression time T after suppression of the renewable energy source n) [yen]
Q = Total power revenue [yen] when there is no suppression of all renewable energy sources during the suppression time T
= Σ ((Rated value of renewable energy source n or contracted capacity) × Inhibition time T × Z _n ) [yen]
Second index = P _n / Q _n
However,
P _n = Revenue from selling electricity after suppression of renewable energy _{n at} suppression time T [yen]
= Power generation amount “X _n ” × “Z _n ” [yen] after suppression at suppression time T after suppression of renewable energy source n
Q _n = Revenue from selling electricity [yen] when there is no suppression of renewable energy source n at suppression time T
= (Rated value of renewable energy source n or contracted capacity) × Inhibition time T × Z _n ) [yen]
Note) The suppression time T may be the integration suppression time ∫t.
This index needs to be a comparison between power supplies having the same (integration) suppression time.
Note 2) In the case of photovoltaic power generation, for example, in the case of photovoltaic power generation, the contract capacity of the solar panel may be larger or smaller than the rated value of the PCS, so the person using the contracted capacity rather than the rated value of the PCS May be good.
The combination example 8 is applied to the sixth embodiment, for example.

  Renewable power sources are clustered with the contracted capacity of the power supply (10kW, 50kW, 500kW, etc.). Combination example 10) or the absolute value of power sale (revenue) loss (combination example 11) may be used as an indicator of fairness.

<Combination example 9>
The same contracted capacity, the same cluster (including clusters by area and renewable energy category), or the renewable energy power sources of the same cluster and the same contracted capacity are targeted for fairing, and the method of combination example 1 is used.
Combination example 9 is applied to the fifth embodiment, for example.

<Combination Example 10>
The same contracted capacity, the same cluster (including clusters by area or renewable energy category), or the renewable energy power sources of the same cluster and the same contracted capacity are targeted for fairing, and the methods of combination examples 6 and 7 are used.
The combination example 10 is applied to the fifth embodiment, for example.

<Combination Example 11>
The same contracted capacity, the same cluster (including clusters by area and renewable energy category), or renewable energy power sources of the same cluster and the same contracted capacity are targeted for fairing.
Electricity sales profit or electric power sales loss in the suppression time T itself.
1st index = average value [yen] of electricity sales revenue (loss) of each energy source with the same contracted capacity at restraint time T
Second index = power sales revenue P _n after suppression of energy source n of the same contract capacity at suppression time T
= Power generation amount “X _n ” × “Z _n ” [yen] after suppression of the renewable energy source n
Or
= Selling loss R _n after suppression of the renewable energy source _n
= (The contracted capacity of the renewable energy source n × “Z _n ” = Q _n ) − “P _n ” [yen]
Note) The suppression time T may be the integration suppression time ∫t.
This index needs to be a comparison between power supplies having the same (integration) suppression time.
The combination example 11 is applied to the fifth embodiment, for example.

In the above combination examples 1 to 11, an index in which “the amount of generated power at the rated value or the amount of generated power at the contracted capacity” is replaced with “estimated amount of power generation” is also conceivable.
<Combination Example 12>
The ratio of the amount of power generated during the suppression time T to the estimated power generation amount during the suppression time T.
First index = X / Y
However,
X = Total power generation amount after suppression of all renewable energy sources during suppression time T [Wh]
= Σ (Power generation amount X _n at the suppression time T after suppression of the renewable energy source _n ) [Wh]
Y = Total estimated amount of power generation possible for all renewable energy sources during the suppression time T [Wh]
= Σ (estimated amount of power generation at the suppression time T of the renewable energy source n) [Wh]
Second index = X _n / Y _n
However,
X _n = Power generation amount [Wh] after suppression of the renewable energy power source n at the suppression time T
Y _n = Estimated power generation amount [Wh] at the suppression time T of the renewable energy source n
Note) The suppression time T may be the integration suppression time ∫t.

<Example of combination 13>
An index for realizing fairness between clusters in a situation where there are a plurality M of clusters m composed of renewable energy power supply groups (for example, it is conceivable to form clusters for each prefecture).
First index = X / Y
However,
X = Σ (power generation amount X _m after suppression at suppression time T of cluster _m ) [Wh]
Y = Σ (average power generation Y _m in a predetermined period of cluster _m ) [Wh]
Second index = X _m / Y _m
However,
X _m = Power generation amount after suppression at suppression time T of cluster m [Wh]
Y _m = average power generation amount [Wh] in a predetermined period of cluster m
Note) The suppression time T may be the integration suppression time ∫t.
Note) Various periods such as annual, seasonal, monthly, etc. may be used as the predetermined period when calculating the average power generation amount.

In the above embodiment, the power generation control devices A, AA, 2, and the control devices B, BB, C, 1, 11, and 12 may each be realized by a computer. In this case, the computer reads and executes a program recorded on a computer-readable recording medium, and any one of the power generation control devices A, AA, 2, control devices B, BB, C, 1, 11, 12 The function which has is performed. The recording medium is, for example, a CD-ROM (Compact Disk Read Only Memory). The recording medium is not limited to the CD-ROM and can be changed as appropriate.
In each embodiment described above, the illustrated configuration is merely an example, and the present invention is not limited to the configuration.

A, AA power generation control device A1 communication unit AA1 determination unit A2, AA2 control unit B, BB, C control device B1, C1 processing unit B2, C2 communication unit BB2 control unit 100, 100A, 100B control system 1, 11, 12 control Device 1a Communication unit 1b, 1b1, 1b2 Processing unit 2 Power generation control device 2a Communication unit 2b Control unit 3 PV device 4 Power system 4a Thermal power plant 4b Pumped storage power plant 5 Load 6 Measurement unit

Claims (27)

Determination to determine output control information of the plurality of predetermined power generation devices based on a first index regarding the output state of the power generation device group and a second index regarding the output states of the plurality of predetermined power generation devices belonging to the power generation device group And
A communication unit that transmits the output control information to the corresponding predetermined power generation devices, and
The said determination part is a control apparatus which determines the said output control information according to the difference of the output state of the said power generation device group in an output control time slot | zone, and the output state of these predetermined power generation devices which belong to the said power generation device group.   The control device according to claim 1, wherein the output control time zone is an elapsed time zone. Determination to determine output control information of the plurality of predetermined power generation devices based on a first index regarding the output state of the power generation device group and a second index regarding the output states of the plurality of predetermined power generation devices belonging to the power generation device group And
A communication unit that transmits the output control information to the corresponding predetermined power generation devices, and
The determination unit further controls the output control information according to a difference between a first index related to an output state of the power generation device group and a first index related to an output state of a power generation device group different from the power generation device group. apparatus. A determination unit that determines output control information of a plurality of predetermined power generation devices belonging to the power generation device group, based on an index relating to an output state of the power generation device group;
A communication unit that transmits the output control information to the corresponding predetermined power generation devices, and
The said determination part is a control apparatus which determines the said output control information according to the difference of the parameter | index regarding the output state of the said power generation device group, and the parameter | index regarding the output state of the power generation device group different from the said power generation device group.   The output state includes the power generation amount, the power generation suppression amount, the power generation amount upper limit value, the power generation output upper limit value, the on / off state of the predetermined power generation device, and the suppression in the power generation device group or the plurality of predetermined power generation devices 5. The control device according to claim 1, wherein the control device is at least one of a number of times, an output control time, and a power sale profit or a power sale loss as a result of the output control. Based on an index related to output states of a plurality of first power generation devices belonging to the power generation device group and an index related to output states of a plurality of second power generation devices different from the plurality of first power generation devices belonging to the power generation device group. A determination unit that determines output control information of the plurality of first power generation devices;
A communication unit that transmits the output control information to the corresponding first power generation devices,
The said determination part is a control apparatus which determines the said output control information according to the difference of the output state of the said some 1st electric power generating apparatus in the output control time slot | zone, and the output state of the said several 2nd electric power generating apparatus. Determination to determine output control information of the plurality of predetermined power generation devices based on a first index regarding the output state of the power generation device group and a second index regarding the output states of the plurality of predetermined power generation devices belonging to the power generation device group And
A communication unit that transmits the output control information to the corresponding predetermined power generation devices, and
The output control information is
The first index set based on a reference power generation amount of the power generation device group in a predetermined time zone and at least one of the number of suppressions or the suppression time of the power generation device group in an elapsed time zone;
Based on a reference power generation amount of the plurality of predetermined power generation devices belonging to the power generation device group in the predetermined time zone and at least one of the number of times of suppression or the suppression time of the plurality of predetermined power generation devices in the elapsed time zone. And a control device that is determined according to a difference from the second index that is set. The reference power generation amount of the power generation device group is set based on the upper limit value of the output power of each power generation device belonging to the power generation device group,
The control device according to claim 7, wherein the reference power generation amount of the plurality of predetermined power generation devices is set based on an upper limit value of output power of the plurality of predetermined power generation devices. The reference power generation amount of the power generation device group is the power generation amount of the power generation device group in the predetermined time zone,
The control device according to claim 7, wherein the reference power generation amount of the plurality of predetermined power generation devices is a power generation amount of the plurality of predetermined power generation devices in the predetermined time period. The first index is set based on a reference power generation amount of the power generation device group in a predetermined time zone and a power generation amount of the power generation device group in an elapsed time zone,
The second index is set based on a reference power generation amount of the plurality of predetermined power generation devices in the predetermined time zone and a power generation amount of the plurality of predetermined power generation devices in the elapsed time zone. The control device according to any one of the above. The first index is set based on a reference power generation amount of the power generation device group in a predetermined time zone and a suppression power amount of the power generation device group in an elapsed time zone,
The second index is set based on a reference power generation amount of the plurality of predetermined power generation devices in the predetermined time zone and a suppressed power amount of the plurality of predetermined power generation devices in the elapsed time zone. 4. The control device according to any one of 3. The first index is set based on a reference power sales revenue of the power generation device group in a predetermined time zone and a power sales revenue according to the power generation amount of the power generation device group in an elapsed time zone,
The second index is set based on the reference power sales revenue of the plurality of predetermined power generation devices in the predetermined time zone and the power sales revenue according to the power generation amount of the plurality of predetermined power generation devices in the elapsed time zone. The control device according to any one of claims 1 to 3. The reference power sales revenue of the power generation device group is set based on the upper limit value of the output power of each power generation device belonging to the power generation device group, the length of the predetermined time zone, and the unit power sales price of the power generation device,
The reference power sales revenue of the plurality of predetermined power generation devices is set based on the upper limit value of the output power of the plurality of predetermined power generation devices, the length of the predetermined time zone, and the unit power selling price of the plurality of predetermined power generation devices. The control device according to claim 9. The upper limit value of the output power of each power generator is a rated value of the output power of each power generator, or a contractual upper limit value,
The control device according to claim 8 or 13, wherein the upper limit value of output power of the plurality of predetermined power generation devices is a rated value of output power of the plurality of predetermined power generation devices or a contractual upper limit value.   The said communication part transmits the said output control information, when the said several predetermined electric power generating apparatus is determined as an output control object based on the said 1st parameter | index and the said 2nd parameter | index. The control device described in 1.   The output of the plurality of predetermined power generation devices is controlled based on the latest output control information at a time interval equal to or less than a transmission interval of the output control information in the communication unit. The control device described.   The control device according to claim 16, wherein the communication unit receives the power generation amount of the predetermined power generation device at a time interval equal to or less than the transmission interval from a predetermined power generation device that is a transmission source of the output control information. Determining output control information of the plurality of predetermined power generation devices based on a first index relating to an output state of the power generation device group and a second index relating to an output state of the plurality of predetermined power generation devices belonging to the power generation device group;
Transmitting the output control information to the corresponding predetermined power generation devices,
A control method for determining the output control information according to a difference between an output state of the power generation device group in an output control time zone and output states of the plurality of predetermined power generation devices belonging to the power generation device group. Determining output control information of the plurality of predetermined power generation devices based on a first index relating to an output state of the power generation device group and a second index relating to an output state of the plurality of predetermined power generation devices belonging to the power generation device group;
Transmitting the output control information to the corresponding predetermined power generation devices,
The control method which determines the said output control information according to the difference of the 1st parameter | index regarding the output state of the said power generation device group, and the 1st parameter | index regarding the output state of the power generation device group different from the said power generation device group. Based on an index related to the output state of the power generation device group, determine output control information of a plurality of predetermined power generation devices belonging to the power generation device group,
Transmitting the output control information to the corresponding predetermined power generation devices,
The control method which determines the said output control information according to the difference of the parameter | index regarding the output state of the said power generation device group, and the parameter | index regarding the output state of the power generation device group different from the said power generation device group. Based on an index related to output states of a plurality of first power generation devices belonging to the power generation device group and an index related to output states of a plurality of second power generation devices different from the plurality of first power generation devices belonging to the power generation device group. And determining output control information of the plurality of first power generation devices,
Transmitting the output control information to the corresponding first power generators;
A control method for determining the output control information according to a difference between an output state of the plurality of first power generation devices and an output state of the plurality of second power generation devices in an output control time period. Determining output control information of the plurality of predetermined power generation devices based on a first index relating to an output state of the power generation device group and a second index relating to an output state of the plurality of predetermined power generation devices belonging to the power generation device group;
Transmitting the output control information to the corresponding predetermined power generation devices,
The output control information is
The first index set based on a reference power generation amount of the power generation device group in a predetermined time zone and at least one of the number of suppressions or the suppression time of the power generation device group in an elapsed time zone; and the predetermined index Set based on a reference power generation amount of the plurality of predetermined power generation devices belonging to the power generation device group in the time zone and at least one of the number of suppressions or the suppression time of the plurality of predetermined power generation devices in the elapsed time zone The control method which determines according to the difference with the said 2nd parameter | index performed. On the computer,
Determination to determine output control information of the plurality of predetermined power generation devices based on a first index regarding the output state of the power generation device group and a second index regarding the output states of the plurality of predetermined power generation devices belonging to the power generation device group Procedure and
A transmission procedure for transmitting the output control information to the corresponding plurality of predetermined power generation devices, and
In the determination procedure, the output control information is determined according to a difference between an output state of the power generation device group in an output control time zone and an output state of the plurality of predetermined power generation devices belonging to the power generation device group. program. On the computer,
Determination to determine output control information of the plurality of predetermined power generation devices based on a first index regarding the output state of the power generation device group and a second index regarding the output states of the plurality of predetermined power generation devices belonging to the power generation device group Procedure and
A transmission procedure for transmitting the output control information to the corresponding plurality of predetermined power generation devices, and
In the determination procedure, the output control information is determined according to a difference between a first index related to the output state of the power generation device group and a first index related to the output state of the power generation device group different from the power generation device group. Program. On the computer,
A determination procedure for determining output control information of a plurality of predetermined power generation devices belonging to the power generation device group, based on an index relating to an output state of the power generation device group;
A transmission procedure for transmitting the output control information to the corresponding plurality of predetermined power generation devices, and
The program for determining the said output control information according to the difference of the parameter | index regarding the output state of the said power generation device group in the said determination procedure, and the parameter | index regarding the output state of the power generation device group different from the said power generation device group. On the computer,
Based on an index related to output states of a plurality of first power generation devices belonging to the power generation device group and an index related to output states of a plurality of second power generation devices different from the plurality of first power generation devices belonging to the power generation device group. A determination procedure for determining output control information of the plurality of first power generators;
A transmission procedure for transmitting the output control information to the corresponding first power generation devices, and
A program for determining the output control information according to a difference between an output state of the plurality of first power generation devices and an output state of the plurality of second power generation devices in an output control time period in the determination procedure. On the computer,
Determination to determine output control information of the plurality of predetermined power generation devices based on a first index regarding the output state of the power generation device group and a second index regarding the output states of the plurality of predetermined power generation devices belonging to the power generation device group Procedure and
A transmission procedure for transmitting the output control information to the corresponding plurality of predetermined power generation devices, and
In the determining procedure, the first power generation amount set based on the reference power generation amount of the power generation device group in a predetermined time zone and at least one of the number of suppression times or the suppression time of the power generation device group in the elapsed time zone. At least one of one index, a reference power generation amount of the plurality of predetermined power generation devices belonging to the power generation device group in the predetermined time zone, and a suppression frequency or a suppression time of the plurality of predetermined power generation devices in the elapsed time zone A program for determining the output control information in accordance with a difference from the second index set based on one.

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