WO2018037477A1

WO2018037477A1 - Power conditioning system and power conditioning method

Info

Publication number: WO2018037477A1
Application number: PCT/JP2016/074508
Authority: WO
Inventors: 浩史森田; 大悟橘高; 新加藤; 門田　行生
Original assignee: 株式会社東芝; 東芝エネルギーシステムズ株式会社
Priority date: 2016-08-23
Filing date: 2016-08-23
Publication date: 2018-03-01

Abstract

A power conditioning system according to an embodiment is applied to a power supply system that supplies power to a shared power grid from a plurality of power generation facilities having a power generation unit that uses renewable energy to generate power. This power conditioning system has: multiple energy management means, which are provided in correspondence with the multiple power generation facilities, and which control machinery in the multiple power generation facilities so as to eliminate deviations in a power generation value with respect to a target power value for each power generation facility; and an integrated energy management means, which performs a control to change the power generation value for any of the multiple power generation facilities so as to eliminate deviations in a total value for the power generation values of the multiple power generation facilities with respect to a total value for the target power values for the multiple power generation facilities.

Description

Power adjustment system and power adjustment method

Embodiments described herein relate generally to a power adjustment system and a power adjustment method.

In recent years, power plants equipped with a power generation unit that generates power using renewable energy such as solar light and wind power (hereinafter abbreviated as “re-energy power plant”) are increasing.

In the form of supplying power from the renewable energy power station to the power system of the power company, the operator having the renewable energy power station continuously supplies a certain amount of power to the power system in accordance with the contents previously contracted with the power company. It is obliged to do.

Generally, the electric power generated by using renewable energy varies depending on the weather, the region, and the time zone, so it is not easy to make the electric power supplied from the renewable energy power station constant.

It is conceivable to absorb power fluctuations by installing a storage battery etc. at the renewable energy power plant, but there is a limit to its absorption capacity. For example, when a power fluctuation larger than the power fluctuation assumed at the time of design occurs, the power supplied to the power system cannot be kept constant as contracted with the power company. Moreover, if the facility of the renewable energy power plant breaks down or stops for maintenance, power cannot be supplied to the power system during that time.

The problem to be solved by the present invention is to provide an electric power adjustment system and an electric power adjustment method capable of continuously supplying constant electric power to an electric power system.

The power adjustment system of the embodiment is applied to a power supply system that supplies power from a plurality of power generation facilities having a power generation unit that generates power using renewable energy to a common power system. The power adjustment system is provided corresponding to each of the plurality of power generation facilities, and each of the plurality of power generation facilities is controlled so that there is no deviation of the power generation value with respect to the power target value of each power generation facility. The power generation value of any one of the plurality of power generation facilities is changed such that there is no deviation of the total value of the power generation values of the plurality of power generation facilities with respect to the total value of the power target values of the plurality of power generation facilities. And integrated energy management means for performing control.

FIG. 1 is a diagram illustrating an example of a configuration of a power supply system including a power adjustment system according to an embodiment. FIG. 2 is a diagram illustrating an example of a functional configuration of the hydrogen EMS 13 in FIG. FIG. 3 is a diagram illustrating an example of a functional configuration of the integrated hydrogen EMS 50 in FIG. FIG. 4 is a diagram illustrating an example of the operation of the integrated hydrogen EMS 50 in FIG. FIG. 5 is a diagram showing details of processing common to steps S5 and S7 in FIG. FIG. 6 is a diagram illustrating a processing procedure for changing the total value Y of the power target value yn. FIG. 7 is a diagram illustrating a processing procedure for switching use / nonuse of the external power supply 30.

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

FIG. 1 is a diagram illustrating an example of a configuration of a power supply system including a power adjustment system according to an embodiment.

In the power supply system of the present embodiment, n renewable energy power plants (hereinafter referred to as “renewable power plants 1, 2,..., N”) that supply power to a common power system as power generation facilities. .) 1, 2, ..., n are included.

The renewable energy power plants 1, 2,..., N are owned by, for example, one business, and the power system is owned by, for example, one power company. The operators having the renewable energy power plants 1, 2,..., N continuously supply electric power of a constant supply electric power value [kWh] to the electric power system according to the contents previously contracted with the electric power company. The constant supply power value that can be supplied to the power system is divided into a plurality of levels according to the purchase price of the power company, and the operator sets the supply power value level at regular intervals (for example, every 30 minutes). ) Can be switched.

The renewable energy power plants 1, 2,..., N include

power generation units

11, 21,..., N1 and

power supply units

12, 22,.

The

power generation units

11, 21,..., N1 are devices that generate power using renewable energy such as sunlight, wind power, hydraulic power, or a combination thereof.

The

power supply units

12, 22, ..., n2 are devices that supply power based on the power generated by the

power generation units

11, 21, ..., n1, respectively.

The power supply unit 12 includes devices such as a water storage tank 101, a hydrogen production apparatus 102, a hydrogen tank 103, a fuel cell 104, and a storage battery 105, respectively. The power supply units 22,..., N2 also include similar devices. Below, it demonstrates for the equipment in the electric power supply part 12. FIG.

The storage battery 105 constitutes an instantaneous power adjustment unit (or short-term power adjustment unit) that performs power adjustment that suppresses a power fluctuation component that fluctuates instantaneously (or in a short cycle) in the power output from the power generation unit 11. . On the other hand, the water storage tank 101, the hydrogen production apparatus 102, the hydrogen tank 103, and the fuel cell 104 are long-term power that performs power adjustment that suppresses a power fluctuation component that fluctuates over a long period of power output from the power generation unit 11. The adjustment unit is configured.

The water storage tank 101 stores water and supplies the stored water to the hydrogen production apparatus 102 and the fuel cell 104. In the example of FIG. 1, the water storage tank 101 is disposed inside the power supply unit 12, but is not limited to this example. The water storage tank 101 may be provided outside the power supply unit 12.

The hydrogen production apparatus 102 produces hydrogen by electrolyzing the water supplied from the water storage tank 101 using the electric power generated by the power generation unit 11 under the control of the hydrogen EMS 13. In addition, the hydrogen production apparatus 102 includes measurement devices (not shown) such as a gas sensor, a pressure gauge, and a flow meter, and the measurement result measured by the measurement device is sent to the hydrogen EMS 13.

The hydrogen tank 103 stores and releases the hydrogen produced by the hydrogen production apparatus 102 under the control of the hydrogen EMS 13. The hydrogen tank 103 includes measurement devices (not shown) such as a gas sensor, a pressure gauge, and a flow meter, and the measurement result measured by the measurement device is sent to the hydrogen EMS 13.

The fuel cell 104 generates electric power using the hydrogen stored in the hydrogen tank 103 under the control of the hydrogen EMS 13 and generates hot water using water and exhaust heat supplied from the water storage tank 101. The electric power generated by the power generation of the fuel cell 104 is supplied to the power system. The fuel cell 104 includes a measuring device (not shown) such as a gas sensor, a pressure gauge, and a flow meter, and a measuring device (not shown) that measures the amount of hydrogen storage, and the measurement result measured by the measuring device is It is sent to hydrogen EMS13.

The storage battery 105 stores the electric power generated by the power generation unit 11 under the control of the hydrogen EMS 13. The electric power stored in the storage battery 105 can be supplied to the electric power system by being discharged under the control of the hydrogen EMS 13. The storage battery 105 includes a measuring device (not shown) that measures the amount of stored electricity, and the measurement result measured by the measuring device is sent to the hydrogen EMS 13.

The power supply system is provided with an external power supply 30. This external power supply 30 has a storage battery (secondary battery) that can be charged and discharged, for example, and is used as a constant voltage source that supplements the shortage when the power supplied to the power system is less than a certain value. . However, the external power supply 30 is not necessarily required and can be omitted.

The power supply system is further provided with a power adjustment system that performs power adjustment to keep the power supplied to the power system constant. This power adjustment system includes n hydrogen energy management systems (hereinafter “hydrogen EMS”) 13, 23,..., N3 and one integrated hydrogen energy management system (hereinafter “integrated hydrogen EMS”) 50. Including.

The hydrogen EMSs 13, 23,..., N3 are provided corresponding to the renewable energy power plants 1, 2,..., N, respectively, and target power values of the respective renewable energy power plants (target values of power output by the renewable energy power plants). [KWh]) so that there is no deviation of the generated power value (the value [kWh] of the power actually output by the renewable energy power plant, hereinafter referred to as “power generation value”). .., N have a function of controlling each of the devices, that is, a function of shaping and keeping the fluctuating power constant so that the power generation value approaches the power target value (performing power forming). However, in each renewable energy power plant, when a power fluctuation larger than the power fluctuation assumed at the time of design occurs, the power supplied to the power system may not be kept constant. Moreover, if the facility of the renewable energy power plant breaks down or stops for maintenance, power cannot be supplied to the power system during that time.

It should be noted that the total power target value of each renewable energy power plant is set to match the supply power value contracted in advance by the operator with the power company. In addition, the power target value of each renewable energy power plant is determined according to the specifications such as the power generation capacity of each renewable energy power plant.

The integrated hydrogen EMS 50 eliminates the deviation of the total value of the power generation values of the renewable energy power plants 1, 2,..., N from the total power target value of the renewable energy power plants 1, 2,. It has the function to perform control which changes the power generation value of any one or a plurality of renewable energy power plants among power plants 1, 2, ..., n. With this function, even if a power fluctuation larger than the power fluctuation assumed at the time of design occurs at a certain renewable energy power station, the power fluctuation can be supplemented by other renewable energy power stations. , 2,..., N can be maintained constant as contracted with the power company. The same applies when the facility of the renewable energy power plant breaks down or stops for maintenance.

FIG. 2 is a diagram illustrating an example of a functional configuration of the hydrogen EMS 13. Since the functional configuration of the hydrogen EMSs 23,..., N3 is the same as that of the hydrogen EMS 13, the description and illustration thereof are omitted.

The hydrogen EMS 13 includes an information acquisition unit 13a, a calculation unit 13b, and a control unit 13c.

The information acquisition unit 13a collects data measured by measurement devices of each part in the renewable energy power plant 1, data provided from each part, and the like at regular time intervals, and the collected data is stored in a predetermined storage area. This is a function to memorize.

The calculation unit 13b uses the information collected by the information acquisition unit 13a or information stored in a predetermined storage area to calculate various types of information necessary for control at regular time intervals, and calculates the calculated information. This is a function for storing in a predetermined storage area.

The control unit 13c is a function that performs various controls using the information acquired by the information acquisition unit 13a and the information calculated by the calculation unit 13b. For example, the control unit 13c transmits the following information among the information acquired by the information acquisition unit 13a and the information calculated by the calculation unit 13b to the integrated hydrogen EMS 50 at regular time intervals.

(1) Power target value (2) Power generation value (or difference value between power generation value and power target value)
(3) The remaining amount of hydrogen in the hydrogen tank 103 (4) The remaining amount of electricity stored in the storage battery 105 (5) The power generation value of the power generation unit 11 (6) The operating state of the hydrogen-related equipment ・ The power generation value of the fuel cell 104 ・Amount of hydrogen produced ・ Operating status of auxiliary equipment such as cooling machines and water pumps (7) Operating status of storage battery 105 ・ Power value to be charged / discharged by storage battery 105 In addition to the above-mentioned information, power generation adjustable amount, hydrogen usable amount There may be information such as.

It is not always necessary to notify the integrated hydrogen EMS 50 of all the information (1) to (7). If at least the information of (2) to (4) and (6) is notified, the integrated hydrogen EMS 50 will control the above-described control. Can be executed.

In addition, the control unit 13c controls equipment in the renewable energy power plant 1 in order to achieve power supply of a specified power generation value in accordance with a command sent from the integrated hydrogen EMS 50 to the hydrogen EMS 13. Also, a function of changing the power target value of the renewable energy power plant 1 is provided.

FIG. 3 is a diagram illustrating an example of a functional configuration of the integrated hydrogen EMS 50.

The integrated hydrogen EMS 50 includes an information acquisition unit 50a, a calculation unit 50b, and a control unit 50c.

The information acquisition unit 50 has a function of collecting data provided from each unit at regular time intervals and storing the collected data in a predetermined storage area. For example, the information acquisition unit 50a is configured to receive information transmitted from the hydrogen EMS 13, 23,..., N3 or weather prediction information provided from another system (predicted sunshine amount after a predetermined time, wind energy, hydraulic power, etc. Are collected at regular time intervals (for example, in units of one minute), and the collected information is stored in a predetermined storage area.

The calculation unit 50b calculates various types of information necessary for control at regular time intervals using the information collected by the information acquisition unit 50a or the information stored in a predetermined storage area. This is a function for storing in a predetermined storage area. For example, the calculation unit 50b sets the power target value of the renewable energy power plants 1, 2,..., N to the total value of the power generation values of the renewable energy power plants 1, 2,. A deviation from the total value is calculated at regular time intervals (for example, in units of one minute), and the calculated information is stored in a predetermined storage area.

The control unit 50c is a function that performs various controls using the information acquired by the information acquisition unit 50a and the information calculated by the calculation unit 50b. For example, the control unit 50c allows a renewable energy power plant 1, 2,..., N after a predetermined time (for example, 1 minute) so that the deviation calculated by the computing unit 50b is eliminated. Later, a process of sending a command to supply power of a higher power generation value or a lower power generation value than the present to the corresponding hydrogen EMS is performed at regular time intervals (for example, in units of one minute).

More specifically, in the control unit 50c, the total value of the power generation values of the renewable energy power plants 1, 2,..., N is less than the total power target value of the renewable energy power plants 1, 2,. In the case where the power generation value is below the lower limit of the predetermined range including the total value, one or a plurality of renewable energy power stations that can afford to increase the power generation value are supplied with a power generation value higher than the present value after a predetermined time. Take control. In addition, the control unit 50c determines whether or not the total value of the power generation values of the renewable energy power plants 1, 2,..., N exceeds the total power target value of the renewable energy power plants 1, 2,. When the value exceeds the upper limit of a predetermined range including the value, control is performed to supply power of a power generation value lower than the current power to one or a plurality of power generation facilities having a margin to reduce the power generation value after a predetermined time.

The following are some methods for selecting a renewable energy power plant that can afford to change the power generation value.

(A) Refer to deviation of power generation value with respect to power target value of each renewable energy power plant The control unit 50c changes the power generation value using information on deviation of power generation value with respect to the power target value of each renewable energy power plant. Selection of one or a plurality of renewable energy power plants and determination of a power generation value after a predetermined time of the renewable energy power plants may be performed. For example, if each renewable energy power plant is installed in the same area and uses the same type of renewable energy (for example, sunlight), the renewable energy power plant with the largest deviation of the generated power value from the target power It can be considered that the scale is large and the margin to change the power generation value is the largest compared to the renewable energy power plant.

(B) Referring to the priority assigned to each renewable energy power plant The control unit 50c changes one or more of the power generation values according to the priority given in advance to each renewable energy power plant. You may make it perform selection of the renewable energy power station, and the determination of the electric power generation value after the predetermined time of the said power generation installation. For example, if the margin for changing the power generation value for each renewable energy power plant is known in advance, priorities are assigned in descending order of the margin, and the power generation value is increased as the priority is higher. The power generation value may be changed smaller as the renewable power plant has a lower priority.

(C) Refers to the operating state of the equipment of the renewable energy power plant, the remaining amount of electricity stored, and the remaining amount of hydrogen The control unit 50c operates the operating state of the hydrogen-related equipment in the renewable energy power plants 1, 2,. 104, the amount of hydrogen produced by the hydrogen production apparatus 102, the operating state of auxiliary equipment such as a cooler and a water pump), the operating state of the storage battery 105, the remaining amount of electricity stored in the storage battery 105, and the remaining amount of hydrogen in the hydrogen tank 103 With reference to the information, the selection of one or a plurality of renewable energy power plants whose power generation value is to be changed and the determination of the power generation value after a predetermined time of the renewable energy power plant may be performed. For example, the remaining amount of electricity stored in the storage battery 105 or the remaining amount of hydrogen in the hydrogen tank 103 is less than a certain amount, or auxiliary equipment such as a cooler or water pump, or hydrogen-related equipment such as the fuel cell 104 is stopped. If it is in a state, it is not possible to immediately increase the power generation value, and it takes a predetermined time or more until the desired power generation value is obtained after the devices are operated. Such a renewable energy power plant may be excluded from selection targets for increasing the power generation value.

Further, the control unit 50c determines a deviation of the total value of the power generation values of the renewable energy power plants 1, 2,..., N with respect to the total power target value of the renewable energy power plants 1, 2,. , N, a function of performing control to lower the total power target value of the renewable energy power plants 1, 2,..., N is provided. For example, even if control is performed to supply a power generation value higher than the present power to a renewable energy power plant that can afford to increase the power generation value after a predetermined time, the power targets of the renewable energy power plants 1, 2,. When the deviation of the total value of the power generation values of the renewable energy power plants 1, 2,..., N with respect to the total value is predicted to be within the predetermined range, the renewable energy power plants 1, 2,. , N may be controlled to lower the total value of the power target values. In such a case, the control unit 50c notifies the power company of a change in the supplied power value.

In addition, the control unit 50c determines the renewable energy power plants 1, 2 and 2 in accordance with weather prediction information (various amounts of natural energy such as predicted amount of sunshine, wind power and hydraulic power after a predetermined time) provided from another system. .., N, or a function of performing control to change the total value of the power target values of the renewable energy power plants 1, 2,..., N. For example, when the predicted amount of sunshine on the next day in the area of the renewable energy power plant having the photovoltaic power generation facility is below a predetermined amount, the target power value on the next day of the renewable energy power plant and the renewable energy power plants 1, 2,. If the total power target value of n is set to a low value and exceeds the predetermined amount, the power target value of the next day of the renewable energy power plant and the power target value of the renewable energy power plants 1, 2,. The total value may be set higher. In such a case, the control unit 50c instructs the hydrogen EMS of the corresponding renewable energy power plant to change the power target value, and notifies the power company of the change of the supplied power value.

Further, the control unit 50c determines a deviation of the total value of the power generation values of the renewable energy power plants 1, 2,..., N with respect to the total power target value of the renewable energy power plants 1, 2,. If the power cannot be within the range, the power of the external power supply 30 is used to supplement the shortage of power supplied to the power system. For example, a value obtained by combining the total value of the power generation values of the renewable energy power plants 1, 2,..., N after a predetermined time and the power supplied from the external power supply 30 to the power system is a renewable energy power plant 1, 2,. ..., n may control the power supplied from the external power supply 30 so as to be the total value of the power target values of n.

In addition, the control unit 50c detects that an arbitrary renewable energy power station has stopped due to a failure or the like based on various information (information such as the power generation value of each renewable energy power station) supplied from each renewable energy power station. And a function to control the remaining renewable energy power plants other than the renewable energy power plant when a certain renewable energy power plant stops. For example, if a facility of a certain renewable energy power station fails and stops, or is stopped for maintenance, power cannot be supplied from the renewable energy power station to the power system during that time. In such a case, control is performed to change the power generation value of each renewable energy power plant so that the remaining power plants can achieve the total power target value of the renewable energy power plants 1, 2,..., N. You may do it. Or you may make it perform control which lowers the total value of the electric power target value of renewable energy power plants 1, 2, ..., n. In such a case, the control unit 50c notifies the power company of a change in the supplied power value.

Next, an example of the operation of the integrated hydrogen EMS 50 will be described with reference to FIG.

The integrated hydrogen EMS 50 repeats the processes of steps S1 to S7 shown below at regular time intervals (for example, in units of 1 minute).

First, the integrated hydrogen EMS 50 receives various types of information including n power generation values xn transmitted from n renewable energy power plants 1, 2,..., N, respectively, and stores the received information in a predetermined storage area. (Step S1).

Next, the integrated hydrogen EMS 50 calculates the total value X of the power generation values xn of the received renewable energy power plants 1, 2,..., N, and stores the calculated information in a predetermined storage area (step S2).

Next, the integrated hydrogen EMS 50 calculates the total value X of the power generation values xn of the renewable energy power plants 1, 2,..., N with respect to the total value Y of the power target values yn of the renewable energy power plants 1, 2,. The deviation is confirmed (step S3).

Here, when the total value X is higher than the total value Y (YES in step S4), the integrated hydrogen EMS 50 has a predetermined time with respect to the hydrogen EMS of one or more renewable energy power plants that can afford to reduce the power generation value. Later, a power supply command for supplying power with a power generation value lower than the current value is sent (step S5). Thereafter, the processing from step S1 is repeated.

On the other hand, when the total value X is lower than or equal to the total value Y (NO in step S4), the process proceeds to step S6.

In step S6, when the deviation of the total value X from the total value Y is within P% (YES in step S6), the process from step S1 is repeated without doing anything. On the other hand, when the deviation of the total value X with respect to the total value Y exceeds P% (NO in step S6), the integrated hydrogen EMS 50 is compared with the hydrogen EMS of one or more renewable energy power plants that can afford to increase the power generation value. Then, after a predetermined time, a power supply command for supplying electric power with a higher power generation value than the present is sent (step S7). Thereafter, the processing from step S1 is repeated.

Next, details of processing common to steps S5 and S7 in FIG. 4 will be described with reference to FIG.

In the process of step S5 (or S7), the integrated hydrogen EMS 50 uses information on the deviation of the total value X from the total value Y to reduce (or increase) the power generation value of one or more renewable energy power plants. A selection is made (step S11).

For example, when each renewable energy power plant is installed in the same area and uses the same type of renewable energy (for example, sunlight), the renewable energy power plant that maximizes the deviation of the power generation value xn from the power target value yn is selected. You may make it do. Or when the margin which can change an electric power generation value for every renewable energy power station is known beforehand, you may make it select the renewable energy power plant with the highest priority which shows the order with a high margin. Also, the remaining amount of electricity stored in the storage battery 105 or the remaining amount of hydrogen in the hydrogen tank 103 is less than a certain amount, or auxiliary equipment such as a cooler or water pump, or a hydrogen-related device such as the fuel cell 104 is stopped. The renewable energy power plant in (1) may be excluded from the selection targets for increasing the power generation value.

Next, the integrated hydrogen EMS 50 determines a power generation value instructed to the hydrogen EMS of one or more selected renewable energy power plants (step S12). The power generation value in this case may be determined in accordance with, for example, the power generation capacity of the renewable energy power plant and the margin for changing the power generation value.

Finally, the integrated hydrogen EMS 50 sends a power supply command of the determined power generation value to the hydrogen EMS of the selected one or more renewable energy power plants (step S13).

Note that the following processing procedure may be added to the processing procedure shown in the flowchart of FIG.

(I) Processing procedure for changing the total value Y of the power target value yn (FIG. 6)
The processing procedure shown in FIG. 6 is inserted, for example, before step S5 and before step S7 in FIG.

The integrated hydrogen EMS 50 determines whether or not the total value Y needs to be changed (step S21).

For example, the deviation of the total value X from the total value Y is still within a predetermined range even if control is performed to supply a power generation value higher than the present value to a renewable energy power plant that can afford to increase the power generation value after a predetermined time. If it is predicted that the total value Y cannot be accommodated, it may be determined that the total value Y needs to be lowered. Also, for example, when the amount of natural energy such as predicted amount of sunshine, wind power, hydraulic power, etc. after a predetermined time is below a predetermined amount, it is determined that the total value Y needs to be reduced. It may be determined that the total value Y needs to be increased.

When it is determined in step S21 that the total value Y needs to be reduced (YES in step S22), the integrated hydrogen EMS 50 notifies the power company that the supplied power value is to be reduced (step S23). On the other hand, when it is determined that the total value Y needs to be increased (NO in step S22, YES in step S24), the integrated hydrogen EMS 50 notifies the power company that the supplied power value is to be increased (step S23). If there is no need to change the total value Y (NO in step S24), nothing is done.

(Ii) Processing procedure for switching use / non-use of the external power supply 30 (FIG. 7)
The processing procedure shown in FIG. 7 is inserted, for example, before step S5 and before step S7 in FIG.

The integrated hydrogen EMS 50 determines whether or not the external power supply 30 is necessary (step S31).

For example, when the deviation of the total value X with respect to the total value Y cannot be within a predetermined range after a predetermined time, it is necessary to supplement the shortage of power supplied to the power system using the power of the external power supply 30. May be determined.

If it is determined in step S31 that the total value Y needs to be reduced (YES in step S32), the integrated hydrogen EMS 50 combines the total value X and the power supplied from the external power source 30 to the power system after a predetermined time. The supplied power of the external power supply 30 is controlled so that the obtained value becomes the total value Y (step S33). On the other hand, if it is determined that there is no need to lower the total value Y (NO in step S32), the integrated hydrogen EMS 50 does nothing (step S34).

As described above, according to the present embodiment, for example, a power fluctuation larger than the power fluctuation assumed at the time of design occurs, a facility of a certain renewable energy power station fails or stops, or a certain renewable energy power station Even if it is stopped for maintenance, a certain amount of power can be continuously supplied to the power system.

As described in detail above, according to the embodiment, constant power can be continuously supplied to the power system.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1-n ... Renewable energy power plant (renewable energy power plant), 11-n1 ... Power generation part, 12-n2 ... Electric power supply part, 13-n3 ... Hydrogen EMS, 30 ... External power supply, 50 ... Integrated hydrogen EMS, 101 DESCRIPTION OF SYMBOLS ... Water storage tank, 102 ... Hydrogen production apparatus, 103 ... Hydrogen tank, 104 ... Fuel cell, 105 ... Storage battery.

Claims

A power regulation system applied to a power supply system that supplies power from a plurality of power generation facilities having a power generation unit that generates power using renewable energy to a common power system,
A plurality of energy management means for respectively controlling the devices of the plurality of power generation facilities, so as to eliminate the deviation of the power generation value with respect to the power target value of each power generation facility provided corresponding to each of the plurality of power generation facilities;
Integrated energy for performing control to change the power generation value of any of the plurality of power generation facilities so that there is no deviation of the total value of the power generation values of the plurality of power generation facilities with respect to the total power target value of the plurality of power generation facilities A power adjustment system comprising a management means.
The integrated energy management means includes:
Information acquisition means for performing a process of acquiring information indicating the power generation values of at least the plurality of power generation facilities from the plurality of energy management means;
An arithmetic unit that performs a process of calculating a deviation of a total value of power generation values of the plurality of power generation facilities acquired by the information acquisition unit with respect to a total value of power target values of the plurality of power generation facilities;
In order to eliminate the deviation calculated by the calculation means, the energy management corresponding to the command for supplying the power generation value higher than the current value or the power generation value lower than the current value to any power generation facility of the plurality of power generation facilities The power adjustment system according to claim 1, further comprising: a control unit that performs processing to be sent to the unit.
The integrated energy management means includes:
When the total value of the power generation values of the plurality of power generation facilities is less than the total value of the power target values of the plurality of power generation facilities or below the lower limit of a predetermined range including the total value, there is room to increase the power generation value The power generation equipment is controlled to supply power with a power generation value higher than the present value after a predetermined time,
When the total power generation value of the plurality of power generation facilities exceeds the total power target value of the plurality of power generation facilities or exceeds the upper limit of a predetermined range including the total value, there is room to reduce the power generation value Control the power generation equipment to supply power with a power generation value lower than the present value after a predetermined time.
The power adjustment system according to claim 1 or 2.
The integrated energy management means includes:
Using information on the deviation of the power generation value with respect to the power target value of each power generation facility, selection of one or more power generation facilities to change the power generation value and determination of the power generation value after a predetermined time of the power generation facility,
The power adjustment system according to any one of claims 1 to 3.
The integrated energy management means includes:
In accordance with the priority assigned in advance to each power generation facility, the selection of one or more power generation facilities to change the power generation value and the determination of the power generation value after a predetermined time of the power generation facility,
The power adjustment system according to any one of claims 1 to 3.
The integrated energy management means includes:
Selection of one or more power generation facilities whose power generation value is to be changed and a predetermined time of the power generation facilities using at least information on the operating state of the devices, the remaining power storage amount, and the remaining fuel amount in the plurality of power generation facilities To determine the power generation value later,
The power adjustment system according to any one of claims 1 to 3.
The integrated energy management means includes:
When the deviation of the total value of the power generation values of the plurality of power generation facilities with respect to the total value of the power target values of the plurality of power generation facilities after a predetermined time cannot fall within a predetermined range, the power target value of the plurality of power generation facilities The power adjustment system of any one of Claims 1 thru | or 6 which performs control which reduces the total value of these.
The integrated energy management means performs control to change any one of the power target values of the plurality of power generation facilities or the total value of the power target values of the plurality of power generation facilities according to weather prediction information obtained from the outside. The power adjustment system according to any one of claims 1 to 7.
The integrated energy management means includes:
When the deviation of the total value of the power generation values of the plurality of power generation facilities with respect to the total value of the power target values of the plurality of power generation facilities after a predetermined time cannot fall within a predetermined range, using the power of the external power source, The power adjustment system according to any one of claims 1 to 8, wherein a power shortage supplied to the power system is supplemented.
The power adjustment system according to any one of claims 1 to 9, wherein, when a certain power generation facility is stopped, the integrated energy management means performs control for the remaining power generation facilities other than the power generation facility.
A power adjustment method applied to a power supply system that supplies power from a plurality of power generation facilities having a power generation unit that generates power using renewable energy to a common power system,
A plurality of energy management means respectively control the devices of the plurality of power generation facilities so that there is no deviation of the power generation value with respect to the power target value of each power generation facility,
The integrated energy management means changes the power generation value of any of the plurality of power generation facilities so that there is no deviation of the total value of the power generation values of the plurality of power generation facilities with respect to the total power target value of the plurality of power generation facilities. Power adjustment method including performing control.