JP6653944B2 - Hybrid system connection system and interconnection empty frame matching system - Google Patents

Description

  The present invention relates to a hybrid system connection system for connecting a power generation facility using a plurality of types of renewable energy, such as wind power, geothermal power, biomass, and solar light, to a commercial power system, and an interconnection vacant frame suitable for realizing the system. Related to the matching system.

  2. Description of the Related Art Conventionally, one or a plurality of power generation companies have installed power generation facilities using a plurality of types of renewable energies such as wind power, geothermal power, biomass, and solar light, and interconnected with a commercial power grid. (See Patent Document 1).

JP-A-2017-200270

  Conventionally, power generation companies that operate power generation facilities using multiple types of renewable energy, such as wind, geothermal, biomass, and solar power, are required to obtain a grid connection capacity that has been approved in advance by a power company that operates a commercial power system. Only within the range of the frame, the power generated from the power generation equipment using the plurality of types of renewable energy could be connected to the commercial power system (interconnected output / reverse power flow).

  However, power generation companies that currently operate existing renewable energy power generation facilities or power generation operators that have not operated renewable energy power generation facilities in the past If it is desired to supply the generated power to the commercial power system, the power company that operates the commercial power system will need to approve the capacity for interconnection to the commercial power system. The current situation is that labor and time are required, and this has been one of the main factors that hindered the installation and operation of new renewable energy power generation facilities. If the operating power generation company installs another new renewable energy power generation facility by itself, the power generated from the new renewable energy power generation facility Although it is possible to supply power to the commercial power system within the range of the already recognized interconnection capacity, the already approved interconnection capacity is not enough. In such a case, a large amount of cost, labor, and time were also required in order to have the new interconnection supply capacity approved.)

  The present invention has been made in view of such problems of the prior art, and a power producer who currently operates an existing renewable energy power generation facility, or a renewable energy power generation facility in the past has been developed. When a power generation company that has been operating has installed a new renewable energy power generation facility and supplies the generated power to the commercial power system (interconnection output / reverse power flow), (i) owns it • A recognized interconnection supply capacity quota (grid interconnection quota) for existing renewable energy power generation facilities being operated and / or (ii) existing renewables owned and operated by other power producers. Generated power from newly installed renewable energy power generation facilities by utilizing the approved supply capacity frame for energy power generation facilities, or the vacant connection grid slots at times when they are not scheduled to be used It made it possible to interconnection supplied to the commercial power system, and an object thereof is to provide a interconnection remnant matching system suitable for implementing hybrid grid-connected systems, and the same.

  The hybrid system connection system according to the present invention for solving the above-described problems is a wind power system that supplies its own generated power to the commercial power system within the range of the interconnection supply capacity that can be connected to the commercial power system. A power generation facility, a geothermal power generation facility that supplies its own generated power to the commercial power grid within a frame of an interconnection supply capacity that can be connected to the commercial power grid, and the wind power generation facility and / or the geothermal power generation facility A total generated power obtaining unit for obtaining a total generated power obtained by summing the generated power from the wind power generation facility and the generated power from the geothermal power generation facility, The generated power is determined based on the interconnection supply capacity frame approved for the wind power generation facility and the interconnection supply capacity frame approved for the geothermal power generation facility (the “interconnection supply capacity frame approved for the geothermal power generation facility”). Supply The capacity frame may be zero) and the total power supply capacity frame exceeds or is likely to exceed the total power supply capacity frame from the wind power generation facility and / or the geothermal power generation facility to the commercial power system. And an interconnection supply power adjustment unit that adjusts the amount of generated electric power supplied to the interconnection.

  In addition, the hybrid system connection system according to the present invention includes a wind power generation system that supplies its own generated power to the commercial power system and a wind power generation system that supplies the generated power to the commercial power system within a range of an interconnection supply capacity that can be connected to the commercial power system. A biomass power generation facility for supplying its own generated power to a commercial power system within a frame of an interconnected supply capacity that can be interconnected and supplied; and a power generation system for generating power from the wind power generation facility and / or the biomass power generation facility. When interconnected supply to, the total generated power acquisition unit for obtaining the total generated power obtained by summing the generated power from the wind power generation equipment and the generated power from the biomass power generation equipment, and the total generated power is the wind power generation equipment And the interconnected supply capacity frame approved for the biomass power generation equipment (the “interconnected supply capacity frame approved for the biomass power generation equipment” The supply capacity quota may be zero) when the total power supply capacity quota exceeds or is likely to exceed the total power supply capacity quota from the wind power plant and / or the biomass power plant. And an interconnection supply power adjustment unit for adjusting the amount of power generated and supplied to the interconnection.

  In addition, the hybrid system connection system according to the present invention includes a wind power generation system that supplies its own generated power to the commercial power system and a wind power generation system that supplies the generated power to the commercial power system within a range of an interconnection supply capacity that can be connected to the commercial power system. A solar power generation facility that supplies its own generated power to a commercial power system within the framework of an interconnected supply capacity that can be interconnected and supplied, and a power generation power supply from the wind power generation facility and / or the solar power generation facility When supplying power to the power system, a total generated power obtaining unit that obtains a total generated power obtained by summing the generated power from the wind power generation facility and the generated power from the solar power generation facility, and the total generated power is: The interconnected supply capacity frame permitted for the wind power generation facility and the interconnected supply capacity frame permitted for the photovoltaic power generation facility (the “interconnected supply capacity frame permitted for the photovoltaic power generation facility” Is zero The total power supply capacity of the wind power generation facility and / or the photovoltaic power generation facility is connected to the commercial power grid when the total capacity exceeds the total supply capacity frame. And an interconnection supply power adjustment unit that adjusts the amount of generated power.

  In addition, the hybrid system connection system according to the present invention provides a first type of renewable energy power generation system for supplying its own generated power to the commercial power system within the range of the interconnected supply capacity that can be supplied to the commercial power system. A second type of renewable energy, different from the first type, which supplies its own generated power to the commercial power system within the framework of equipment and interconnected supply capacity that can be supplied to the commercial power system When the power generated from the power generation equipment and the first and / or second type of renewable energy power generation equipment is interconnected and supplied to a commercial power system, the power generation from the first type of renewable energy power generation equipment is performed. A total generated power obtaining unit for obtaining a total generated power by adding the generated power from the second type of renewable energy power generation equipment; and the first type of renewable energy generated by the first type of renewable energy. And the second type of renewable energy power generation equipment (the “second type of renewable energy power generation”). The total capacity of the first type of regeneration may be greater than or equal to the total capacity of the first type. An interconnection supply power adjustment unit that adjusts the amount of power generated and supplied from the renewable energy power generation facility and / or the second type of renewable energy generation equipment to the commercial power system, and the interconnection supply power adjustment unit Or a storage battery control unit operated by or in cooperation with the control from the interconnection supply power adjustment unit, and controls the storage battery to charge the storage battery with the excess or possibly generated power. It is those with a door.

  Further, in the hybrid system connection system according to the present invention, the steam amount adjustment unit included in the interconnection supply power adjustment unit or operated by control from or in cooperation with the interconnection supply power adjustment unit, When the total generated power exceeds or is likely to exceed the total interconnection capacity of the wind power generation equipment and the geothermal power generation equipment, the geothermal power generation equipment And a steam amount adjusting unit that adjusts the amount of steam supplied to the power generation turbine.

  Further, in the hybrid system connection system according to the present invention, the fuel supply amount adjustment unit included in the interconnection supply power adjustment unit or operated under the control of or in cooperation with the interconnection supply power adjustment unit. When the total generated power exceeds or is likely to exceed the total interconnection capacity of the wind power generation facility and the biomass power generation facility, the biomass power generation is performed to suppress the total generated power. A fuel supply amount adjustment unit that adjusts the amount of fuel supplied to the combustion unit in the facility may be provided.

  Further, the hybrid system connection system according to the present invention is a first type of renewable energy power generation facility owned or operated by a certain power generation company A, and is within a range of an interconnected supply capacity that can be interconnected and supplied to a commercial power system. The first type of renewable energy power generation equipment that supplies its own generated power to the commercial power system, and the first type of renewable energy power generation equipment that is owned or operated by another power generation company B different from the power generation company A A second type of renewable energy power generation equipment that is different from the above-mentioned type, and supplies its own generated power to the commercial power system within the range of the interconnected supply capacity that can be connected to the commercial power system. When the two types of renewable energy power generation equipment and the respective generated power from the first and / or the second type of renewable energy power generation equipment are interconnected and supplied to a commercial power system, the power generation company A The power generated from the first type of renewable energy power generation equipment owned or operated and the power generated from the second type of renewable energy power generation equipment owned or operated by the other power generation company B were totaled. A total generated power obtaining unit for obtaining a total generated power, and the power generation company A when interconnecting and supplying each generated power from the first and / or the second type of renewable energy power generation equipment to a commercial power system. And the second type of renewable energy power generation equipment owned or operated by the other power generation company B. For the second type of renewable energy power generation facilities owned or operated by the other power generation company B The “supply capacity frame” may be zero. The same shall apply hereinafter), and a total interconnected supply capacity frame acquisition unit for obtaining a total interconnected supply capacity frame, and a first power generation company A owned or operated by a certain power generation company A Power generated from the renewable energy power generation facility of the second type and power generated from the renewable energy power generation facility of the second type owned or operated by another power generation company B, respectively, and the total generated power Is the total interconnection capacity obtained by adding the interconnection supply capacity frame permitted for the power generation facility of the power generation company A and the interconnection supply capacity frame permitted for the power generation facility of the other power generation company B The total generated power may exceed or may exceed the total interconnected supply capacity frame, provided that it is permitted to be connected to the commercial power system provided that it is within the range of the supply capacity frame. When there is And / or an interconnected supply power adjustment unit that adjusts the amount of electric power generated and supplied from the first and / or second type of renewable energy power generation equipment to the commercial power system.

  Further, the hybrid system connection system according to the present invention is a first type of renewable energy power generation facility owned or operated by a certain power generation company A, and is within a range of an interconnected supply capacity that can be interconnected and supplied to a commercial power system. In, the first type of renewable energy power generation equipment that supplies its own generated power to the commercial power system, and the first type owned or operated by the power generation company A or another power generation company B Is a second type of renewable energy power generation equipment that is different from the second type and supplies its own generated power to the commercial power system within the range of the interconnected supply capacity that can be connected to the commercial power system. When the renewable energy power generation facilities of the first and / or second types of renewable energy power generation facilities are interconnected and supplied to the commercial power system, the power generation company A holds A total generated power obtaining unit for obtaining a total generated power by adding respective generated powers from the first and second types of renewable energy power generation equipment, and a renewable power of the first and / or second type When each of the generated power from the energy power generation equipment is connected to the commercial power system, the power generation company A is a vacant space in the interconnection supply capacity held by another power company and the other power business (A) when a vacant slot corresponding to a time slot that is not scheduled to be used by a user is obtained through the intermediation of a vacant slot matching business operator or through a transaction on an exchange for a vacant slot transaction. An authorized supply capacity quota for the first type of renewable energy power generation equipment owned or operated by operator A; and (b) owned or operated by said generator A or other generator B First Of the type of renewable energy power generation facilities approved for this type of renewable energy power generation equipment (this "renewable energy power generation equipment of the second type owned or operated by the power generation company A or another power generation company B" (C) the power generation operator A may be allowed to intervene by a matching business operator for the transaction of the vacant space or the vacant space transaction. And an additional interconnection supply capacity frame acquisition unit that acquires an additional interconnection supply capacity frame obtained by summing the empty frames acquired by trading on the exchange for the Is exceeded or is likely to be generated, the generated electric power supplied to the commercial power system from the first type of renewable energy power generation equipment and / or the second type of renewable energy power generation equipment Adjust the amount And an interconnection supply power adjustment unit.

  Further, an interconnection vacant space matching system suitable for use in realizing the hybrid system connection system according to the present invention includes an operation status for predicting an operation status of each renewable energy power generation facility owned by a plurality of power generation companies. A prediction unit, and an interconnected vacant space information output unit that outputs vacant space information of the interconnected capacity frame predicted based on the prediction of the operation status of each of the renewable energy power generation facilities (output from the operation status prediction unit) And a matching unit for matching a purchase request and a sale request of a vacant frame from a plurality of power generation companies.

  In the present invention, in the case where power generated from the wind power generation facility and the geothermal power generation facility is interconnected and supplied to the commercial power system, the total power generated from the wind power generation facility and the power generated from the geothermal power generation facility is summed up. The generated power is the sum of the interconnection supply capacity frame (grid interconnection frame) recognized for the wind power generation equipment and the interconnection supply capacity frame (grid interconnection frame) recognized for the geothermal power generation equipment. When the total interconnection supply capacity frame exceeds or is likely to exceed the total interconnection supply capacity frame, the interconnection power supply adjustment unit is configured to generate electric power that is interconnected and supplied to the commercial power system from the wind power generation facility and the geothermal power generation facility. The power generation companies that own or operate existing renewable energy power generation facilities or those that do not own or operate renewable energy power generation facilities When a renewable energy power generation facility is installed in the country and the generated power is connected to the commercial power system (interconnected output / reverse power flow), it is owned or operated by itself or owned or operated by another power generation company Utilizing the approved supply capacity frame for existing renewable energy power generation equipment, it will be possible to connect the power generated from newly installed renewable energy power generation equipment to the commercial power grid .

  Further, in the present invention, when the power generated from the wind power generation equipment and the biomass power generation equipment is interconnected and supplied to the commercial power system, the power generated from the wind power generation equipment and the power generated from the biomass power generation equipment are summed up. The total generated power is calculated based on the interconnection supply capacity frame (grid interconnection frame) recognized for the wind power generation equipment and the interconnection supply capacity frame (grid interconnection frame) recognized for the biomass power generation equipment. When the total combined supply capacity exceeds or is likely to exceed the total supply capacity, the interconnected supply power adjustment unit may be connected to the commercial power grid from the wind power generation equipment and the biomass power generation equipment. Since the amount of power was adjusted, power generation companies that own or operate existing renewable energy power generation facilities or that own or operate When a power generation company that has not installed new renewable energy power generation equipment and supplies the generated power to the commercial power grid by interconnection (interconnection output, reverse power flow), Utilizing the approved supply capacity limit for existing renewable energy power generation facilities owned or operated by power generation companies, the power generated from newly installed renewable energy power generation facilities will be transferred to the commercial power system. It will be possible to supply interconnected power.

  Further, in the present invention, when the power generated from the wind power generation facility and the photovoltaic power generation facility is interconnected and supplied to the commercial power system, the power generated from the wind power generation facility and the power generated from the photovoltaic power generation facility are combined. The sum of the total generated power is determined by the grid connection capacity frame (grid connection frame) recognized for the wind power generation facility and the grid connection supply capacity frame (grid connection frame) recognized for the photovoltaic power generation facility. ) Is exceeded or there is a possibility that the total supply capacity limit is exceeded, the interconnection supply power adjustment unit interconnects the wind power generation equipment and the solar power generation equipment to the commercial power grid. Since the amount of generated power to be supplied is adjusted, power generation companies that own or operate existing renewable energy power generation facilities or power generation that does not own or operate renewable energy power generation facilities When a contractor installs a new renewable energy power generation facility and supplies the generated power to the commercial power grid (interconnection output / reverse power flow), Utilize the approved supply capacity limit for existing renewable energy power generation equipment that is owned or operated and supply power generated from newly installed renewable energy power generation equipment to the commercial power system Becomes possible.

  Further, in the present invention, the total generated power obtained by summing the generated power from the first type of renewable energy power generation equipment and the generated power from the second type of renewable energy power generation equipment is the first type of renewable energy power generation equipment. Interconnected supply capacity frame obtained by adding the interconnected supply capacity frame approved for the renewable energy power generation equipment of the present invention and the interconnected supply capacity frame approved for the second type of renewable energy power generation equipment Is exceeded or there is a possibility that, based on the control from the interconnection supply power adjustment unit, the storage battery control unit charges the storage battery with the excess or possibly generated power. I made it. Therefore, according to the present invention, the power generation that owns or operates the existing renewable energy power generation facilities while storing the excess or possibly generated power in a storage battery so that it can be used later is stored. A power company that does not own or operate a renewable energy power generation facility installs a new renewable energy power generation facility and supplies the generated power to the commercial power grid (interconnection output / reverse ), By utilizing the capacity of the existing renewable energy power generation facility owned or operated by another power generation company or the existing renewable energy power generation equipment owned or operated by another power generation company. The generated power from the installed renewable energy power generation equipment can be interconnected and supplied to the commercial power system.

  Further, in the present invention, the total generated power of the generated power from the wind power generation facility and the generated power from the geothermal power generation facility exceeds the total interconnected supply capacity frame of the wind power generation facility and the geothermal power generation facility. Or when there is a possibility, based on the control from the interconnection supply power adjustment unit, the steam amount adjustment unit supplies the power to the power generation turbine in the geothermal power generation facility to suppress the total generated power amount. Since the amount of steam to be supplied is adjusted, the existing renewable energy can be adjusted only by adopting a very simple (easy) method of adjusting the amount of steam supplied to the power generation turbine and without burdening the geothermal power generation equipment. A power generation company that owns or operates power generation facilities, or a power generation company that does not own or operate renewable energy power generation facilities, Existing renewable energy power generation that is owned or operated by itself or owned or operated by another power generation company when the generated power is connected to the commercial power system (interconnected output / reverse power flow) Utilizing the interconnection capacity limit approved for the equipment, it will be possible to interconnect and supply the generated power from the renewable energy power generation equipment newly installed by itself to the commercial power system.

  Further, in the present invention, the total generated power of the generated power from the wind power generation facility and the generated power from the biomass power generation facility exceeds the total interconnected supply capacity frame of the wind power generation facility and the biomass power generation facility. Or when there is a possibility, based on the control from the interconnection supply power adjustment unit, the fuel supply amount adjustment unit, the combustion unit in the biomass power generation equipment to suppress the total generated power amount Since the amount of fuel supplied to the combustion section is adjusted, the method of adjusting the amount of fuel supplied to the combustion section is extremely simple (easy) and uses a method that does not burden the biomass power generation equipment. Newly renewable by power generation companies that own or operate renewable energy power generation facilities or power generation companies that do not own or operate renewable energy power generation facilities Existing renewal owned or operated by itself or owned or operated by another power generation company when energy generation equipment is installed and the generated power is connected to the commercial power system (interconnection output / reverse power flow). Utilizing the interconnection capacity limit approved for renewable energy power generation equipment, it will be possible to interconnect and supply the generated power from the renewable energy power generation equipment newly installed by itself to the commercial power system.

  Also, in the present invention, the power generated from the first type of renewable energy power generation equipment owned or operated by a certain power generation company A and the second type of renewable energy held or operated by another power generation company B The generated power from the available energy power generation equipment, and the total generated power obtained by adding them together, is the interconnection supply capacity frame approved for the power generation equipment of the power generation enterprise A and the power generation capacity of the other power generation enterprise B. If it is approved to be connected to the commercial power grid on condition that it is within the total interconnected supply capacity frame that is the sum of the In the case where the company accepts such a treatment), when the total generated power exceeds or is likely to exceed the total interconnected supply capacity frame, the interconnected supply power adjustment unit performs the first and The second species Since the total amount of power generated and supplied from the renewable energy power generation equipment to the commercial power system is adjusted, the power generation company A that owns or operates the existing renewable energy power generation equipment, Alternatively, a power generation company A who does not own or operate a renewable energy power generation facility installs a new renewable energy power generation facility and interconnects and supplies the generated power to a commercial power system (interconnection output / reverse power flow). Occasionally, the interconnection supply capacity limit approved for the existing renewable energy power generation equipment owned or operated by the power generation company A and the existing renewable energy power generation owned or operated by the other power generation company B Power generation from the renewable energy power generation equipment newly installed by the power generation company A, utilizing both the interconnection capacity capacity approved for the equipment It becomes possible to supply electric power to a commercial power system in an interconnected manner.

  Further, the hybrid system connection system according to the present invention is a first type of renewable energy power generation facility owned or operated by a certain power generation company A, and is within a range of an interconnected supply capacity that can be interconnected and supplied to a commercial power system. A first type of renewable energy power generation equipment that supplies its own generated power to the commercial power system, and a second type of renewable energy power generation equipment that is different from the first type owned or operated by the power generation company A A second type of renewable energy power generation equipment that supplies its own generated power to the commercial power grid within a range of an interconnected supply capacity that can be connected and supplied to the commercial power grid. , When interconnecting and supplying each generated power from the first and / or second type of renewable energy power generation equipment to a commercial power system, the first and / or second power generation company A possesses Generation power obtaining unit for obtaining the total generated power by summing the generated power from the types of renewable energy power generation equipment, and each of the first and / or second types of regeneration owned or operated by the power generation company A Each interconnected supply capacity frame approved for the renewable energy power generation facilities ("The interconnected supply capacity approved for any one of the first and second types of renewable energy power facilities," ) May be zero), and the other interconnection companies in the interconnection interconnection capacity frame approved for the power generation facilities on the other power generation company B side B side is a connection vacant slot in a time zone that is not scheduled to be used, and the power generation company A side is a broker of a matching trader of the connection vacant slot or through a transaction on an exchange where the connection vacant slot is traded. Obtained from another power generation company B An additional interconnection supply capacity frame acquisition unit that acquires an additional interconnection supply capacity frame obtained by adding an interconnection empty frame; and a total generated power acquired by the total generated power acquisition unit and the additional interconnection supply capacity frame acquisition When the total generated power does not exceed the additional interconnection supply capacity frame by comparing the additional interconnection supply capacity frame acquired by the department, the first and / or second type of the power generation company A side When the total power generation exceeds the additional power supply capacity frame, when the total power generation exceeds the additional power supply capacity limit, An interconnection supply power adjustment unit for suppressing the amount of electric power generated and supplied from the first and / or second type of renewable energy power generation equipment to the commercial electric power system.

Furthermore, the interconnection vacant space matching system suitable for use in the operation of the hybrid system connection system according to the present invention is a system for predicting the operation status of each renewable energy power generation facility owned by a plurality of power generation companies. A status prediction unit, and a commercial license recognized for each of the renewable energy power generation facilities, which is obtained in accordance with the prediction of the operation status of each of the plurality of renewable energy power generation facilities based on the output from the operation status prediction unit. A connection free space information output unit that calculates or outputs information on a connection free space in a time zone that is not scheduled to be used by the power generator in a connection supply capacity frame that can be connected to the power system, Based on the interconnected vacant space information calculated or output by the interconnected vacant space information output unit, a request to purchase each of the interconnected vacant spaces from a plurality of power generation companies. It is characterized in that a matching unit for matching each other and sell desired. In this connection vacant space matching system, the matching result obtained by the matching unit is provided to each of the plurality of power generation companies in order to encourage the transaction of the connection vacant space between the plurality of power generation companies. The matching result providing unit may be further provided.

It is a conceptual block diagram showing an example of composition of a hybrid system connection system concerning an embodiment of the present invention. It is a conceptual block diagram which shows an example of a schematic structure of the connection matching system (hybrid system transaction system) of the connection empty frame which concerns on this embodiment. 5 is a graph for explaining the operation of the embodiment. 5 is a graph for explaining the operation of the embodiment. 5 is a graph for explaining the operation of the embodiment. 5 is a graph for explaining the operation of the embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a conceptual block diagram illustrating an example of a configuration of a hybrid system connection system according to an embodiment of the present invention. One of the main purposes of the hybrid system connection system according to the present embodiment is, for example, via an existing wind power plant, a new geothermal power plant, a new biomass power plant, or a new solar power plant. Of renewable energy power generation facilities to the commercial power grid by private lines, etc., and the existing capacity of the wind power generation facilities (and / or the vacant space in the system capacity frame purchased from other power generation companies, etc.) By controlling within a range that does not exceed the (plus system capacity frame), it is possible to sell power (reverse power flow) such as new renewable energy. Such a hybrid system connection system includes (1) promotion of introduction of renewable energy in a system tight area, (2) improvement of system line utilization, and (3) stabilization of a wide area system (for example, geothermal power generation in a wind power generation facility). (When connecting equipment and biomass power generation equipment).

  In the present embodiment, the power generation company can regenerate a plurality of different types of renewable energies different from each other, such as wind, geothermal, biomass, and solar light, in a relatively short distance area of, for example, several to several tens of kilometers in diameter. Install and maintain power generation facilities using renewable energy, and use them to interconnect (supply output and reverse power flow) the generated power generated by these multiple types of renewable energy power generation facilities to the commercial power system It is a system configured on the assumption that

  In FIG. 1, 1 is a wind power generation facility, 2 is a photovoltaic power generation facility, 3 is a geothermal power generation facility, 4 is a biomass power generation facility, and 3a is a supply amount of steam generated by geothermal heat in the geothermal power generation facility 3 to a power generation turbine. Is adjusted by, for example, changing the opening of a supply valve, and the steam amount adjustment unit 4a changes the amount of supply of fuel such as wood chips to the combustion unit in the biomass power generation equipment 4, for example, changes the fuel supply speed. This is a fuel supply amount adjusting unit that adjusts the fuel supply amount.

  In FIG. 1, reference numerals 5 and 6 indicate that the generated power from the wind power generation facility 1 and the photovoltaic power generation facility 2 can be connected to the commercial power system 10 (interconnection output / reverse power flow), respectively. The power conditioner includes a DC / DC converter, an inverter, and the like for converting and adjusting the generated power from each of the power generation facilities 1 and 2 to AC power that satisfies the voltage and frequency required by the power company. The generated power converted by each of the power conditioners 5 and 6 is supplied to the commercial power system 10 via the substation 16 and the interconnection point 9 (interconnection output / reverse power flow).

  In FIG. 1, reference numeral 21 denotes a power storage device including a charge / discharge control unit 22 and a storage battery 23. The charging / discharging control unit 22 controls charging / discharging of the storage battery 23 via a power conditioner 25. Each of the wires extending from the power conditioner 25 is connected to each of the wires connecting the power generation facilities 1 to 4 and the power receiving and transforming facility 16.

  A part of the generated power from each of the power generation facilities 1 to 4 is charged in the storage battery 23 under the control of the charge / discharge etc. control unit 22 which receives a signal from an interconnection supply power adjustment unit (reference numeral 34) described later. Is done. The DC power from the storage battery 23 is also controlled by the power conditioner 25 under the control of the charge / discharge etc. control unit 22 which receives a signal from an interconnection supply power adjustment unit (reference numeral 34) described later. The electric power is converted to electric power and supplied to the streetlight and the emergency load 17 via the substation 16 or to the commercial power system 10. In addition, commercial power from the commercial power system 10 is also supplied to the load 17 via the substation 16. Further, each generated power from each of the power generating facilities 1 to 4 is also supplied to the load 17 via the power receiving and transforming facility 16.

  In FIG. 1, reference numerals 11 and 12 denote power meters provided on each wiring between the power conditioners 5 and 6 and the power receiving and transforming equipment 16, respectively, and reference numerals 13 and 14 denote the geothermal power generation equipment 3 and the biomass power generation. A power meter provided on each wiring between the facility 4 and the power receiving and transforming facility 16, 15 is a power meter provided between the power receiving and transforming facility 16 and the interconnection point 9, and 31 is a power meter provided on each line. Total generated power for calculating (acquiring) a total value (total generated power) of the generated power when the generated power from the facilities 1 to 4 is output from the interconnection point 9 to the commercial power system 10. The acquisition unit. That is, each power value measured by each of the wattmeters 11 to 15 is sent to the total generated power acquisition unit 31. The total generated power acquisition unit 31 is configured to calculate the total generated power (from the connection point 9 to the commercial power supply) by combining the generated powers from the power generation facilities 1 to 4 based on the outputs from the power meters 11 to 15. (Total value of the generated power that is output to the power system 10). The total generated power acquisition unit 31 calculates the total generated power at predetermined time intervals, that is, at predetermined time intervals, and transmits the calculated total generated power to the determination unit 32.

  In FIG. 1, reference numeral 33 denotes information on each of the power generation facilities 1 to 4, which acquires and records information such as each interconnected supply capacity frame approved by the electric power company, and calculates and acquires the total thereof. It is a total interconnection supply capacity frame acquisition recording unit that records the total interconnection supply capacity frame. The information such as the interconnection supply capacity frame recognized by the power company for each of the power generation facilities 1 to 4 is, for example, the installation / owner of each of the power generation facilities 1 to 4 by the total interconnection supply capacity frame acquisition record. The information is input to the unit 33 and recorded. In the present embodiment, the “interconnected supply capacity frame recognized by the power company for each of the power generation facilities 1 to 4” acquired and recorded in the total interconnected supply capacity frame acquisition recording unit 33 is included. In the case where some of the power generation facilities (one or more power generation facilities) in each of the power generation facilities 1 to 4 are installed and owned by “another power generation business”, the “other power generation business” Are included to include the power supply capacity approved by the electric power company for the installed and owned power generation facilities (this treatment is naturally possible if the electric power company approves).

  The total interconnected supply capacity frame acquisition recording unit 33 stores information such as each interconnected supply capacity frame recognized by the electric power company for each of the power generation facilities 1 to 4 at predetermined time intervals, that is, at predetermined time zones. (Including information on “interconnection vacancy” acquired in individual transactions described later), and the sum of them is calculated to acquire and record the total interconnection supply capacity frame.

  The total interconnected supply capacity frame calculated and recorded by the total interconnected supply capacity frame acquisition recording unit 33 includes an empty slot in the interconnected supply capacity frame held by another power generation company, Among the interconnection supply capacity frames owned by the power generation companies in the "interconnection supply capacity frame, which are not scheduled to be used and are classified at predetermined time zones" (hereinafter "interconnection empty frame" ), And the power generation company that owns or operates each of the power generation facilities 1 to 4 is referred to as a “matching business operator (to be described later) that mediates the sale and purchase of interconnection empty frames, or an exchange of interconnection empty frames. ”Are also included.

  The total interconnection supply capacity frame acquisition recording unit 33 is configured such that the interconnection empty frame acquisition unit (reference numeral 35 in FIG. 1, described below) uses the “matching business operator (to be described later) that mediates the buying and selling of interconnection empty frames and the like. ) Or the information on the interconnected vacant frame acquired through the “exchange of interconnected vacant frame” is received from the acquired vacant frame information output unit 36. In other words, the acquired vacant space information output unit 36 is configured such that the power generation company that owns or operates each of the power generation facilities 1 to 4 is a “matching business company (to be described later) that mediates the buying and selling of interconnection vacant space, The information on the interconnected vacant frame acquired from the “other power generation company” via the “exchange of interconnected vacant frame” is acquired from the interconnected vacant frame acquiring unit 35 (described later).

  As described above, the total generated power acquisition unit 31 determines the calculated total generated power at a predetermined time interval (for example, a time interval such as 5 minutes or 10 minutes), that is, for each predetermined time period. Output to When the determination unit 32 receives the total generated power from the total generated power acquisition unit 31, the determination unit 32 accesses the total interconnection supply capacity frame acquisition recording unit 33, and accesses the total interconnection supply capacity frame acquisition recording unit 33. To obtain the total interconnected supply capacity frame at that time (time zone) recorded in. Then, the determination unit 32 determines that the total generated power from the total generated power acquisition unit 31 in the time zone (predetermined time interval) and the same time zone from the total interconnected supply capacity frame acquisition recording unit 33 (predetermined time zone). (Interval) and the total interconnected supply capacity frame, and if the total generated power exceeds the total interconnected supply capacity frame in the time slot (predetermined time interval) (or the time slot (predetermined time)) In the case where it is predicted that it is likely to exceed in the (interval)), that and the amount of generated power (or the generated power value that is predicted to be likely to be exceeded in the time zone (predetermined time interval)) are calculated as follows: Output to the interconnection supply power adjustment unit 34.

  The interconnection supply power adjustment unit 34 determines from the determination unit 32 that the total generated power exceeds the total interconnection supply capacity frame in the time period (predetermined time interval) (or the time period (the predetermined time period)). At that interval) and the amount of generated power that exceeds (or the amount of generated power that is predicted to be likely to be exceeded during the time period (predetermined time interval)), An adjustment is made so as to suppress all or a part of each generated power from each of the power generation facilities 1 to 4 so as not to exceed the total interconnection supply capacity frame.

  The interconnection supply power adjustment unit 34 performs, for example, all or part of a plurality of methods as described below in accordance with the power-related situation including the current weather and locality, so that the total generated power is An adjustment is made so as to suppress all or a part of each generated power from each of the power generation facilities 1 to 4 so as not to exceed the total interconnection supply capacity frame.

  First, the interconnection supply power adjustment unit 34 transmits a control signal to the charge / discharge etc. control unit 22 to cause a part of the power generated from each of the power generation facilities 1 to 4 to be stored in the storage battery 23. Thereby, the amount of generated power supplied from each of the power generation facilities 1 to 4 to the substation 16 is suppressed. As described above, when the excess generated power is stored in the storage battery 23, the generated power of each of the power generation facilities 1 to 4 is suppressed (for example, peak cut by a power conditioner described later, generation of steam in the geothermal power generation facility). In principle, there is no need to reduce the amount of supply to the turbine or the amount of fuel supply in the biomass power generation facility.

  In addition, the interconnection supply power adjustment unit 34 transmits, for example, a control signal to the power conditioners 5 and 6, and the power conditioners 5 and 6 transmit each control signal from the wind power generation facility 1 or the solar power generation facility 2. The maximum value of the generated power is cut (for example, the peak is cut by a method such as surge control), whereby the amount of generated power from the wind power generation facility 1 and the solar power generation facility 2 is suppressed. Further, the interconnection supply power adjustment unit 34 transmits a control signal to, for example, the steam amount adjustment unit 3a and supplies the control signal to the steam amount adjustment unit 3a to rotate a power generation turbine in the geothermal power generation facility 3. The amount of generated steam is suppressed, whereby the amount of power generated from the geothermal power generation equipment 3 is suppressed and adjusted. Further, the interconnection supply power adjustment unit 34 transmits, for example, a control signal to the fuel supply amount adjustment unit 4a, and the fuel supply amount adjustment unit 4a causes the wood chips to be supplied to the combustion unit in the biomass power generation facility 4. The amount of fuel supplied from the biomass power generation facility 4 is suppressed and adjusted accordingly.

  Next, a power generation company that owns or operates each of the power generation facilities 1 to 4 is connected by the connection free space acquisition unit 35 to the connection free space (“other In the grid connection capacity frame held by the “generating company”, “unused spaces in the grid connection capacity frame that are not scheduled to be used and are classified at predetermined time zones”) With reference to FIG. 2, an example of an operation and a configuration for acquiring the information via a matching trading company or an exchange with a vacant connection frame that mediates the buying and selling of the products will be described.

  In FIG. 2, reference numeral 41 denotes the Internet, 42 denotes a terminal on the side of the power generation company A which has installed and holds each of the power generation facilities (renewable energy power generation facilities) 1 to 4, and 43 denotes another renewable energy power generation facility. The other terminal 44 on the power generation company B side that is owned is a connection free frame matching system (hybrid system) 44 that is configured by a server operated by a matching trading company that mediates the sale and purchase of the connection free frame. Trading system, which may be a vacant exchange system having similar functions).

  A large number of power generation companies who install and own renewable energy power generation facilities participate (join) in the matching transaction business operated by the interconnection free space matching system 44. In the matching system 44 of FIG. 2, reference numeral 45 denotes the operation status of each renewable energy power generation facility installed and owned by a number of power generation companies participating in the system, for example, the content of the installed power generation facility, An operation status-related database for recording information such as regional characteristics such as population and the number of households in the installed area and weather in the area, and 46 is installed and owned by many power generation companies participating in this system. An interconnection supply capacity frame database 47 that records each interconnection supply capacity frame approved by the electric power company for each renewable energy power generation facility. An operation status prediction unit for predicting the operation status of each renewable energy power generation facility installed and owned by each power generation company at predetermined time intervals, 48 Based on the output from the operation status prediction unit 47 and the information from the interconnection supply capacity frame database 46, for each predetermined time period for each renewable energy power generation facility installed and held by the large number of power generation companies A vacant frame output unit 49 for calculating (acquiring) and outputting the vacant space of the interconnection, 49 receives the sell order and the buy order of the interconnection vacant frame for each time period from the large number of power generation companies, respectively. Are matched with each other (and a transaction is established with the limit price or the outcome).

  Next, the operation of the matching system (hybrid system trading system) 44 will be described with reference to FIG. The vacant frame output unit 48 outputs data required for power generation, such as transmission output data of existing renewable energy (365 days, 24 hours), solar radiation for solar light, wind condition data for wind power, and biomass supply for biomass. (The data recorded in the operation status related database 45) and each interconnection supply capacity frame (the interconnection supply capacity frame) permitted for each power generation facility owned by a number of power generation companies participating in the transaction. Based on the data recorded in the database 46) and the like, an interconnected vacant frame (system vacant frame) during normal operation is calculated and output for each fixed time period. In other words, the vacant space output unit 48 outputs the “time period when there is no plan to use the power supply facilities” in the interconnection supply capacity frame approved for each power generation equipment owned or operated by a large number of power producers. And outputs it.

  The matching unit 49 uses the insolation, wind forecast data, biomass storage, water system data (each prefecture), and geothermal potential data of the existing renewable energy location as input data, and Simulate the best combination of remnant sell and buy orders. The matching unit 49 provides the simulation result to each power generation company having each renewable energy power generation facility such as solar power, wind power, biomass, geothermal power, and hydro power, and Encourage consideration of purchasing / sale of interconnected vacant slots in capacity slots. Data relating to the above series of operations will be disclosed on a website on the Internet, and a matching transaction will be realized especially for a new renewable energy power generation company.

  With such a matching system (hybrid system trading system) 44, (1) for a power generation company operating a wide area system, it is possible to improve the system utilization rate, spread and spread renewable energy power generation, and stabilize the wide area system. The effect is expected. (2) For existing renewable energy power generation companies, effects such as an improvement in the capacity factor of the power generation equipment owned and an increase in profits (improvement in yield) due to resale of the vacant connection frame can be expected. (3) For new renewable energy power generation companies, the purchase of interconnection vacancies is expected to have the effects of reducing the system burden, shortening the system connection process, and suppressing the investment amount.

  As described above, the matching system (hybrid system trading system) 44 utilizes the existing unoccupied grid of photovoltaic power generation, wind power generation, biomass power generation, hydroelectric power generation, or geothermal power generation (hereinafter, existing renewable energy). Thus, it is possible to easily connect a new renewable energy power generation facility which is desired to be connected to the grid (interconnection supply). When the hybrid system connection system using the matching system (hybrid system trading system) 44 is adopted, no load is imposed on the wide area system, so that the recruitment process and the like are not required, and the existing renewable energy and the new renewable energy are used. Connection with renewable energy becomes easy, and it becomes possible to easily establish a transaction between a connection vacant frame of existing renewable energy power generation equipment and a new renewable energy connection applicant.

  Next, the operation and the like of the hybrid system connection system described above with reference to FIG. 1 will be described based on a control method and the like in the hybrid system connection system of the present embodiment.

[When a system that controls new renewable energy based on the wind power generation forecast system on the wind side is adopted]
In the case of such a system, wind conditions are forecasted based on wind conditions and actual data around the target existing wind power plant, and the data is sent to existing wind power plants or new renewable energy power plants (suppression destinations) by signals. If the sum of the wind power generation and the connected power generation exceeds the interconnection supply capacity frame (system frame), the power supply to be suppressed performs output suppression.

1. Suppression method when geothermal power generation equipment is connected to wind power generation equipment (1) In the case of the method of suppressing geothermal power generation while making wind power generation non-suppressing operation, as shown in FIG. In addition, the peak of the geothermal power generation amount A is suppressed. The method of suppressing the peak of the geothermal power generation amount A in this case is, for example, a method in which the interconnected supply power adjustment unit 34 in FIG. 1 controls the steam amount adjustment unit 3 a to supply steam to the power generation turbine in the geothermal power generation facility 3. This is done by adjusting the amount of That is, in this case, the load control (suppression operation) is performed by adjusting the steam flow rate by the main steam adjustment valve on the geothermal power generation facility 3 side only during the time when the output suppression is assumed to be necessary, so that the required power generation amount is obtained. To control. FIG. 3 shows that the interconnected supply power adjustment unit 34 of FIG. 1 adjusts the total generated power so that the total generated power in the case of the geothermal power transmission amount of 2000 kW does not exceed the total interconnected supply capacity frame with respect to the wind system frame 8500 kW. It is a figure showing the image in the case of control. When the output suppression width is less than 1/10 of the total output of the geothermal power generation equipment 3, the load suppression operation is performed on the geothermal side OPS.
(2) In the case of the method of suppressing the wind power generation while the geothermal power generation is set to the non-suppressed operation, as shown in FIG. In other words, in this case, the power generation amount on the geothermal power generation facility 3 side is kept intact, and a substantial portion of the generated power of the wind power generation facility 1 is peak-cut. For example, the maximum power generation from the wind power generation equipment 1 and the power generation from the geothermal power generation equipment 3 are summed, and the power is set so that the total becomes the maximum power generation not exceeding the grid interconnection supply frame. The maximum value of the wind power is suppressed by the conditioner, for example, so that the peak of the wind power becomes 6500 KW (peak cut line) or less as shown in FIG.
(3) In the case of the method of suppressing both wind power generation and geothermal power generation, as shown in FIG. 5, while suppressing the peak of the wind power generation amount F by the same peak cut method as in FIG. If the total generated power still needs to be suppressed even after the cut, the geothermal power generation amount E is suppressed. In this case, the method of suppressing the amount of geothermal power generation E may be performed by the same method as that of FIG.

2. Suppression method when connecting biomass power generation equipment to wind power generation equipment (1) In the case of using the method of suppressing biomass power generation while making wind power generation unrestricted operation, the fuel for biomass power generation is controlled by the fuel supply amount adjustment unit 4a in FIG. Partially cut to control the load and reduce the output.
(2) In the case of the method of suppressing wind power generation while making biomass power generation non-suppressing operation, peak power generation on the wind side is cut. For example, the maximum power generation amount on the wind power generation side and the geothermal power generation amount are summed, and the power conditioner suppresses the maximum power generation amount so as not to exceed the interconnection supply capacity frame (grid interconnection supply frame).
(3) In the case of the method of suppressing both wind power generation and biomass power generation, the peak cut on the wind power generation side is performed. If further suppression is still required, the suppression described in the above (1) is performed on the biomass power generation side. Do.

3. Suppression method when solar power generation equipment is connected to wind power generation equipment (1) In the case of a method in which solar power generation is suppressed while wind power generation is not suppressed, the output is suppressed by a power conditioner.
(2) In the case where the wind power generation is suppressed while the photovoltaic power generation is not suppressed, the generated power on the wind power generation side is peak-cut. For example, the maximum power generation amount on the wind power generation side and the power generation amount on the geothermal power generation side are summed, and the total power generation is suppressed by the power conditioner so that the maximum power generation does not exceed the grid connection supply frame.
(3) In the case of the method of suppressing both wind power generation and biomass power generation, the peak cut on the wind power generation side is performed, and if further suppression is still necessary, the above-described (1) is performed on the solar power generation side.

[When adopting a system that does not control existing wind power and new renewable energy power]
In this case, the system is provided with the storage battery 23 shown in FIG. 1 and temporarily stores the excess generated power when the total generated power exceeds the interconnection supply capacity frame in the storage battery 23, When the generated power does not exceed the interconnection supply capacity frame (when it is not exceeded), the electricity stored in the storage battery 23 is interconnected and supplied to the commercial power system 10. FIG. 6 is a graph showing the transition of the geothermal power generation amount G and the wind power generation amount H when the present embodiment performs such an operation. In the operation shown in FIG. 6, the peak portion of the power generated from the geothermal power generation facility 3 is stored in the storage battery 23.

[When a self-owned line monitoring system that does not limit existing wind power generation equipment is adopted]
When such a system is adopted, a system that transfers and cuts off the new renewable energy power generation side when a failure occurs in the existing wind power generation equipment and new renewable energy power generation equipment or private line, and the existing wind power generation equipment A circuit breaker is installed on the primary side of the power generation side to provide a system that does not overload existing wind power generation equipment even if a problem occurs.

  As described above, according to the present embodiment, when power generated from the wind power generation facility 1 and the geothermal power generation facility 3 is connected to the commercial power system 10 (interconnection output / reverse power flow), the wind power generation facility The total generated power, which is the sum of the generated power from the geothermal power generation facility 3 and the generated power from the geothermal power generation facility 3, is connected to the interconnection supply capacity frame (grid interconnection frame) of the wind power generation facility 1 and the geothermal power generation facility 3 When the total power supply capacity frame (grid connection frame) and the total interconnected power supply capacity frame exceed or possibly exceed the total interconnected power supply capacity frame, the interconnected supply power adjustment unit 34 causes the wind power generation facility 1 and the geothermal power generation The amount of power generated and supplied from the facility 3 to the commercial power system 10 is adjusted. Therefore, according to the present embodiment, a power generation company that owns or operates an existing renewable energy power generation facility, or a power generation company that does not own or operate a renewable energy power generation facility, When the energy power generation equipment is installed and the generated power is connected to the commercial power system 10 (interconnection output / reverse power flow), the interconnection supply capacity frame recognized for the existing renewable energy power generation equipment is By utilizing this, it becomes possible to interconnect and supply the generated power from the newly installed renewable energy power generation equipment to the commercial power system 10.

  Further, in the present embodiment, when the power generated from the wind power generation facility 1 and the biomass power generation facility 4 is interconnected and supplied to the commercial power system 10, the power generated from the wind power generation facility 1 and the power from the biomass power generation facility 4 are supplied. The total generated power obtained by adding the generated power is the sum of the interconnection supply capacity frame (grid interconnection frame) of the wind power generation facility 1 and the interconnection supply capacity frame (grid interconnection frame) of the biomass power generation facility 4. When the total interconnection capacity exceeds or is possibly exceeded, the interconnection supply power adjustment unit 34 is interconnected and supplied to the commercial power system 10 from the wind power generation facility 1 and the biomass power generation facility 4. The amount of generated power is adjusted. Therefore, according to the present embodiment, a power generation company that owns or operates an existing renewable energy power generation facility, or a power generation company that does not own or operate a renewable energy power generation facility, When installing energy power generation equipment and supplying the generated power to the commercial power system (interconnection output / reverse power flow), use the interconnection supply capacity limit approved for existing renewable energy power generation equipment Then, it becomes possible to interconnect and supply the generated power from the newly installed renewable energy power generation equipment to the commercial power system 10.

  In the present embodiment, when the power generated from the wind power generation facility 1 and the photovoltaic power generation facility 2 is interconnected and supplied to the commercial power system 10, the power generated from the wind power generation facility 1 and the photovoltaic power generation facility 2 The total generated power obtained by summing the generated powers from the grids is the interconnection supply capacity frame (grid interconnection frame) of the wind power generation facility 1 and the interconnection supply capacity frame (grid interconnection frame) of the solar power generation facility 2 When there is a possibility of exceeding or exceeding the total interconnection supply capacity frame, the interconnection supply power adjustment unit 34 transmits from the wind power generation facility 1 and the solar power generation facility 2 to the commercial power grid 10. The amount of generated power supplied to the grid is adjusted. Therefore, according to the present embodiment, a power generation company that owns or operates an existing renewable energy power generation facility, or a power generation company that does not own or operate a renewable energy power generation facility, When installing energy power generation equipment and supplying the generated power to the commercial power system (interconnection output / reverse power flow), use the interconnection supply capacity limit approved for existing renewable energy power generation equipment Then, it becomes possible to interconnect and supply the generated power from the newly installed renewable energy power generation equipment to the commercial power system 10.

  Further, in the present invention, the total generated power obtained by summing the respective generated powers from the respective power generation facilities 1 to 4 is the total sum of the respective interconnected supply capacity frames recognized for the respective power generation facilities 1 to 4. When the interconnection supply capacity frame is exceeded or there is a possibility that, based on the control from the interconnection supply power adjustment unit 34, the charge / discharge etc. control unit 22 may or may not exceed the interconnection supply capacity frame. The storage battery 23 is charged with the generated power. Therefore, according to the present embodiment, the existing renewable energy power generation equipment is retained or operated while storing the excess or possibly generated power in the storage battery 23 so that the power can be used later. Power generation companies that do not own or operate renewable energy power generation equipment, install new renewable energy power generation equipment, and connect the generated power to the commercial power grid (interconnection). Output / reverse power flow) by utilizing the interconnection capacity limit approved for existing renewable energy power generation facilities owned or operated by itself or owned or operated by another power generation company. It is possible to interconnect and supply the generated power from the renewable energy power generation equipment installed in the commercial power system 10.

  Further, in the present invention, the total generated power of the generated power from the wind power generation facility 1 and the generated power from the geothermal power generation facility 3 is the total interconnected power supply of the wind power generation facility 1 and the geothermal power generation facility 3. When the capacity limit is exceeded or there is a possibility that, based on the control from the interconnection supply power adjusting unit 34, the steam amount adjusting unit 3a determines whether the total generated power amount In order to suppress the above, the amount of steam supplied to the power generation turbine in the geothermal power generation facility 3 is adjusted. Therefore, according to the present embodiment, the existing regeneration can be performed only by adopting a very simple (easy) method of adjusting the amount of steam supplied to the power generation turbine in the geothermal power generation facility and without burdening the geothermal power generation facility. A power generation company that owns or operates renewable energy power generation equipment or a power generation company that does not own or operate renewable energy power generation equipment installs new renewable energy power generation equipment and commercializes the generated power. When supplying power to the power system 10 (interconnection output / reverse power flow), newly installed renewable energy power generation is installed by utilizing the interconnection supply capacity frame approved for existing renewable energy power generation equipment. The power generated from the equipment can be connected to the commercial power system.

  Further, in the present embodiment, the total generated power of the generated power from the wind power generation facility 1 and the generated power from the biomass power generation facility 4 is the total interconnected power supply of the wind power generation facility 1 and the biomass power generation facility 4. When the capacity limit is exceeded or there is a possibility that, based on the control from the interconnected supply power adjustment unit 34, the fuel supply amount adjustment unit 4a determines whether the total In order to suppress the amount, the amount of fuel supplied to the combustion section in the biomass power generation facility 4 is adjusted. Therefore, according to the present embodiment, the method of adjusting the amount of fuel supplied to the combustion portion in the biomass power generation facility is extremely simple (easy) and employs a method that does not impose a burden on the biomass power generation facility. A power generation company that owns or operates renewable energy power generation equipment or a power generation company that does not own or operate renewable energy power generation equipment installs new renewable energy power generation equipment and When supplying power to the commercial power system 10 (interconnection output / reverse power flow), newly installed renewable energy is installed by utilizing the interconnection supply capacity frame approved for existing renewable energy power generation equipment. The power generated from the power generation equipment can be interconnected and supplied to the commercial power system.

  Further, in the present embodiment, as described above, the “interconnection supply approved by the electric power company for each of the power generation facilities 1 to 4” is acquired and recorded in the total interconnection supply capacity frame acquisition recording unit 33. In the “capacity frame”, when some of the power generation facilities (one or more power generation facilities) in each of the power generation facilities 1 to 4 are installed / held by “other power generation companies”, It is handled to include the interconnection capacity approved by the power company for the power generation facilities installed and owned by “other power generation companies”. Is possible). Therefore, in the present embodiment, the generated power from the first type of renewable energy power generation equipment owned or operated by a certain power generation company A and the second type generated or operated by another power generation company B The power generated from the renewable energy power generation equipment and the total power generated by summing them are the combined power supply capacity approved for the power generation equipment of the power generator A and the other power generator B Connection with the commercial power system 10 is permitted, provided that it is within the range of the total interconnection supply capacity frame obtained by adding the interconnection supply capacity frame approved for the power generation equipment (If the power company allows such treatment), when the total generated power exceeds or is likely to exceed the total interconnection supply capacity frame, the interconnection supply power adjustment unit 34, First Since the total amount of power generated and supplied to the commercial power system 10 from the second type of renewable energy power generation equipment is adjusted, the existing renewable energy power generation equipment is owned or operated. The power generation company A or the power generation company A who does not own or operate the renewable energy power generation equipment installs a new renewable energy power generation equipment and interconnects the generated power to the commercial power system (interconnection) (Output / reverse power flow) when the power supply company A has a connection capacity limit approved for the existing renewable energy power generation equipment owned or operated by the power generation company A, and another power generation company B owns or operates the power generation system. Utilizing both the interconnection capacity capacity approved for the existing renewable energy power generation equipment and the renewable energy newly installed by the power generation company A The power generated from the power generation equipment can be interconnected and supplied to the commercial power system 10.

  Further, in the present embodiment, the power generated from the first type of renewable energy power generation equipment owned or operated by a certain power generator A and the power generated or held by the power generator A or another power generator B The total power generated by the second type of renewable energy power generation equipment different from the first type and the power generated by the second type of renewable energy power generation facility is “the power generation company A has the interconnection supply capacity held by another power company. The vacant slots in the vacant slots corresponding to the time slots that are not scheduled to be used by the other electric power utilities are to be settled by the mediation of the vacant slot matching business operators or at the exchanges for the vacant slot transactions. (A) an approved supply capacity limit for a first type of renewable energy power generation equipment owned or operated by the power generator A, and (b) the power generator when acquired through a transaction. A (C) when the power producer A has traded for a vacant slot, with respect to the interconnection supply capacity frame approved for the second type of renewable energy power generation equipment owned or operated by the other power producer B; When the total capacity of the vacant space acquired by the intermediary of the matching business operator or the vacant space acquired by trading on the exchange for the vacant space transaction exceeds or is likely to exceed, The interconnection supply power adjustment unit 34 adjusts the amount of power generated and supplied to the commercial power system from the first and second types of renewable energy power generation facilities 1 to 4, respectively. Therefore, according to the present embodiment, the power generation company A that owns or operates the existing renewable energy power generation equipment, or the power generation company A that does not own or operate the renewable energy power generation equipment, When the renewable energy power generation equipment is installed and the generated power is connected to the commercial power system 10 (connected output / reverse power flow), the power generation company A and / or another power generation company B owns or The power generation company uses the interconnection supply capacity frame approved for the existing renewable energy power generation facilities to be operated and the connection vacant space acquired by the power generation company A from another power generation company. The power generated from the renewable energy power generation equipment newly installed by A can be interconnected and supplied to the commercial power system.

  Furthermore, in the interconnection empty frame matching system (see the matching system 44 in FIG. 2) suitable for realizing the hybrid system connection system according to the present embodiment, the operation status prediction unit 47 holds a large number of power generation companies. The operation status of each renewable energy power generation facility is predicted, and the empty frame output unit 48 makes prediction based on the prediction of the operation status of each renewable energy power generation facility (output from the operation status prediction unit 47). , And seeks and outputs vacant slots corresponding to the time zones that are not planned to be used by the relevant power generators in the interconnection supply capacity frame that is permitted for each power generation facility owned or operated by a number of power generators. The matching unit 49 matches a purchase request and a sale request of a vacant frame from a number of power generation companies with each other. Therefore, according to the present embodiment, the power generation company A sets the vacant space in each interconnection supply capacity frame approved for each renewable energy power generation facility held or operated by a large number of power generation companies as the aforementioned. It is easier to obtain power via the matching system 44 and supply the generated power from the newly installed renewable energy power generation equipment to the commercial power system 10 while utilizing the obtained empty space. Will be realized.

  Although the embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and it is needless to say that various modifications and changes are possible.

1-4 Renewable energy power generation equipment 5, 6, 25 Power conditioner 1 Wind power generation equipment 2 Solar power generation equipment 3 Geothermal power generation equipment 3a Steam amount adjustment unit 4 Biomass power generation equipment 4a Fuel supply amount adjustment unit 9 Interconnection point 10 Commercial power Grids 11 to 15 Wattmeter 16 Power receiving and transforming equipment 17 Load 22 Charging / discharging control unit 23 Storage battery 31 Total power generation power acquisition unit 32 Judgment unit 33 Total interconnection supply capacity frame acquisition recording unit 34 Interconnection supply power adjustment unit 35 Interconnection empty Frame acquisition unit 36 Acquired empty frame information output unit 44 Interconnected empty frame matching system 45 Operational status related database 46 Interconnected supply capacity frame database 47 Operational status prediction unit 48 Interconnected empty frame output unit 49 Matching unit

Claims (3)

This is the first type of renewable energy power generation equipment owned or operated by a power generation company A, and its own generated power is supplied to the commercial power grid within the framework of the interconnection supply capacity that can be supplied to the commercial power grid. A first type of renewable energy power plant to be connected;
A second type of renewable energy power generation equipment that is different from the first type and that is owned or operated by the power generation company A. A second type of renewable energy power generation equipment for supplying the generated power to a commercial power grid;
The first and / or second type owned by the power generation company A when each of the generated power from the first and / or second type of renewable energy power generation equipment is interconnected and supplied to a commercial power system. A total generated power obtaining unit for obtaining a total generated power by summing the respective generated powers from the renewable energy power generation facilities of
Each interconnection capacity frame ("the first type and the second type") recognized for each of the first and / or second types of renewable energy power generation equipment owned or operated by the power generation company A. The total interconnection capacity of the renewable energy power generation facilities of any type may be zero.) Of the interconnection supply capacity frame approved for the power generation facility of the other power generation company B side of the time slot that is not planned to be used by the other power generation company B, and the power generation company A side The additional interconnection supply capacity frame obtained by adding the interconnection vacancy acquired from the other power generation company B through the mediation of the matching business operator or the transaction at the exchange that trades the interconnection vacancy An additional interconnection supply capacity frame acquisition unit to acquire,
The total generated power obtained by the total generated power acquisition unit is compared with the additional connected supply capacity frame obtained by the additional connected supply capacity frame obtaining unit, and the total generated power is calculated by the additional connected supply capacity frame. When the total power is not exceeded, the supply of the generated power from the first and / or the second type of renewable energy power generation equipment on the side of the power generation company A to the commercial power system is permitted, and the total generated power is reduced. When the additional connection supply capacity limit is exceeded, the amount of power generated and supplied from the first and / or second type of renewable energy power generation equipment on the power generation company A side to the commercial power system is suppressed. A hybrid system connection system comprising an interconnection supply power adjustment unit. An operation status prediction unit for predicting the operation status of each renewable energy power generation facility owned by a plurality of power generation companies,
On the basis of the output from the operation status prediction unit, it is determined in accordance with the prediction of the operation status of each of the plurality of renewable energy power generation facilities, and is connected to the commercial power system recognized for each of the renewable energy power generation facilities. A connection free space information output unit that calculates or outputs information on a connection free space in a time zone that is not scheduled to be used by the power producer in the connection supply capacity frame that can be supplied,
Based on the interconnected vacant space information calculated or output by the interconnected vacant space information output unit, matching for matching each of the interconnected vacant room purchase requests and the sale requests from a plurality of power generating companies with each other. And an interconnected vacant box matching system suitable for use in operation of the hybrid system connection system according to claim 1. A matching result providing unit that provides the matching result obtained by the matching unit to each of the plurality of power generation companies in order to encourage the transaction of the interconnection vacant frame among the plurality of power generation companies; The interconnection empty frame matching system according to claim 2, wherein