WO2020202716A1

WO2020202716A1 - Measurement system, measurement method, and program

Info

Publication number: WO2020202716A1
Application number: PCT/JP2020/001981
Authority: WO
Inventors: 俊之平田
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2019-03-29
Filing date: 2020-01-21
Publication date: 2020-10-08
Also published as: JP2020165929A; JP7129662B2

Abstract

Provided are a measurement system, measurement method, and program that make it possible to, when stored power is discharged, measure the amount of electrical energy generated by a coordinated generation and storage system in the discharged power. This measurement system (1) is used by a coordinated generation and storage system (2). The coordinated generation and storage system (2) comprises power generation equipment (60) that uses renewable energy, and storage equipment (70) for storing power obtained from a system power supply (7) and either electrical energy obtained by the power generation equipment (60) from the renewable energy or other energy converted from the electrical energy. The measurement system (1) comprises a first measurement unit (11) and second measurement unit (12). The first measurement unit (11) measures a first power amount input into the coordinated generation and storage system (2) from the outside. The second measurement unit (12) measures a second power amount output to the outside from the coordinated generation and storage system (2).

Description

Measurement system, measurement method and program

The present disclosure relates generally to measurement systems, measurement methods and programs, and more specifically to measurement systems, measurement methods and programs for measuring renewable energy.

Conventionally, a system for measuring the amount of commercial power consumed at a target facility is known (see Patent Document 1).

Patent Document 1 describes a power measuring instrument meter reading / display system that measures the power consumption of the target facility and displays the usage data indicating the measured power consumption on the display device.

By the way, in recent years, there is a creation and storage cooperation system that generates electric energy (electric power) using sunlight and stores the generated electric energy. In this system, the photovoltaic power generation facility, the power generated by the photovoltaic power generation facility (electrical energy), and the power output from the grid power source (commercial power) are stored.

By using Patent Document 1, it is possible to measure the electric power when the stored electric power is discharged, but is the discharged electric power the electric energy (electric power) generated by the creation and storage cooperation system? , It is not possible to distinguish whether it is the power of a commercial power source. Therefore, when the stored electric power is discharged, it is not possible to measure the amount of electric energy (electric power) generated by the creation / storage cooperation system among the discharged electric power.

Japanese Unexamined Patent Publication No. 2014-130015

This disclosure is made in view of the above problems, and is a measurement system and measurement capable of measuring the amount of electric energy generated by the creation and storage cooperation system among the amount of discharged electric power when the stored electric power is discharged. The purpose is to provide methods and programs.

The measurement system according to one aspect of the present disclosure is used in the creation and storage cooperation system. The creation and storage cooperation system uses a power generation facility that uses renewable energy, power obtained from a grid power source, and electric energy obtained from the renewable energy by the power generation facility or other energy converted from the electric energy. It is equipped with a storage facility for storing. The measurement system includes a first measurement unit and a second measurement unit. The first measurement unit measures the first electric energy input to the creation / storage cooperation system from the outside. The second measuring unit measures the second electric energy output from the creation / storage cooperation system to the outside.

The measurement method according to one aspect of the present disclosure is the measurement method in the measurement system used in the creation and storage cooperation system. The creation and storage cooperation system uses a power generation facility that uses renewable energy, power obtained from a grid power source, and electric energy obtained from the renewable energy by the power generation facility or other energy converted from the electric energy. It is equipped with a storage facility for storing. The measurement method includes a first measurement step and a second measurement step. The first measurement step measures the first electric energy input to the creation / storage cooperation system from the outside. The second measurement step measures the second electric energy output from the creation / storage cooperation system to the outside.

The program according to one aspect of the present disclosure is a program for causing a computer to execute the measurement method.

FIG. 1 is a diagram illustrating a configuration of a measurement system and a creation and storage cooperation system according to an embodiment. FIG. 2 is a diagram illustrating the operation of the same measurement system.

The embodiments and modifications described below are merely examples of the present disclosure, and the present disclosure is not limited to the embodiments and modifications. Other than the following embodiments and modifications, various changes can be made according to the design and the like as long as they do not deviate from the technical idea of the present disclosure.

(Embodiment)
Hereinafter, the measurement system and the measurement method according to the present embodiment will be described with reference to FIGS. 1 and 2.

(1) Outline The measurement system 1 of the present embodiment is provided in the facility 5 and is used in the creation and storage cooperation system 2 provided in the facility (see FIG. 1). "Facilities" as used in this disclosure are non-residential facilities such as business establishments, factories, buildings, stores, offices, schools, welfare facilities or hospitals, and residential facilities such as detached houses, apartment houses, or apartment houses. including. Non-residential facilities include theaters, movie theaters, public halls, amusement halls, complex facilities, restaurants, department stores, hotels, inns, kindergartens, libraries, museums, museums, underground malls, stations and airports. Furthermore, the "facility" referred to in the present disclosure includes outdoor facilities such as a stadium, a garden, a parking lot, a ground and a park.

As shown in FIG. 1, the creation and storage cooperation system 2 includes a power generation facility 60 and a storage facility 70.

The power generation facility 60 is a facility that generates power using renewable energy (RE: Renewable Energy). The term "renewable energy" as used in the present disclosure means all energies that naturally regenerate at a speed higher than that used, and is synonymous with (or similar to) green power or new energy. Alternatively, "renewable energy" means all energies that are not depleted, exist anywhere on earth, and do not emit (increase) CO ₂ . Renewable energies include, for example, atmospheric heat (air heat), sunlight, wind power, hydropower, geothermal heat, solar heat and biomass. The power generation facility 60 is, for example, a solar power generation facility. The power generation facility 60 outputs the electric energy (electric power) obtained from the renewable energy of the power generation facility 60 to the outside of the storage facility 70 or the creation / storage cooperation system 2. The outside of the creation and storage cooperation system 2 is a load 50 (see FIG. 1) or a system power supply 7 (see FIG. 1) provided in the facility 5. The load 50 is, for example, an electric device that operates by receiving an electric power supply.

The storage facility 70 is a facility in which the power generation facility 60 stores electric energy (electric power) obtained from renewable energy or other energy converted from the electric energy. Further, the storage facility 70 stores the electric power from the system power source 7. Specifically, the storage facility 70 stores the electric power from the system power source 7 or other energy converted from the electric power.

The storage facility 70 outputs the stored energy to the outside of the creation / storage cooperation system 2. For example, when the storage facility 70 stores electric energy, the storage facility 70 outputs the electric energy to the outside of the creation / storage cooperation system 2, for example, a load 50 or a system power supply 7 provided in the facility 5.

The measurement system 1 measures the first electric energy input from the outside to the creation and storage cooperation system 2 and the second electric energy to be output to the outside from the creation and storage cooperation system 2, respectively. Further, the measurement system 1 measures the electric energy (electric energy sold) as the electric energy sold to the system power source 7. The measurement system 1 obtains the renewable energy consumed in the facility 5 by using the measured first electric energy, the second electric energy, and the electric energy sold.

The measurement system 1 causes the server 6 to determine the consideration generated according to the consumption amount (self-consumption amount) of the electric energy obtained from the obtained renewable energy. Here, the consideration is the consideration generated for the self-consumption at the facility 5, and as an example, money (including credits and virtual currency), points (points), goods, or maintenance of the facility 5. It is realized by benefits including services such as.

(2) Configuration (2-1) Livestock creation cooperation system Here, the configuration of the creation and storage cooperation system 2 will be described.

As shown in FIG. 1, the creation and storage cooperation system 2 includes a power generation facility 60, a storage facility 70, and a power conditioner (PCS: Power Conditioning System).

The power generation facility 60 is, for example, a photovoltaic power generation facility, and generates electric energy using sunlight as an energy source for RE.

The storage facility 70 stores at least one facility that stores electric power (electric energy) from the grid power source 7 and electric energy (electric power) obtained from renewable energy by the power generation facility 60 or other energy converted from the electric energy. Have. In the present embodiment, the storage facility 70 includes a power storage device 71, a flywheel 72, and a hydrogen storage device 73.

The power storage device 71 is, for example, a storage battery. The power storage device 71 stores (charges) electrical energy (electric power) obtained from renewable energy by the power generation facility 60. Further, the power storage device 71 stores the electric energy (electric power) output from the system power source 7.

The fly wheel 72 converts the electric energy obtained from the renewable energy by the power generation facility 60 into the physical energy of the rotary motion and stores it, and supplies power by the power generated from the rotary motion at the time of discharge. Further, the fly wheel 72 converts the electric energy (electric power) output from the system power source 7 into physical energy of rotational motion and stores it, and supplies electric power by power generation from the rotational motion at the time of discharge.

The hydrogen storage device 73 generates hydrogen by using the electric energy obtained from the renewable energy by the power generation facility 60, and stores the electric power as hydrogen. The hydrogen storage device 73 uses the electric energy output from the system power source 7 to generate hydrogen, and stores electric power as hydrogen. At the time of discharging, the hydrogen storage device 73 inputs hydrogen to the fuel cell 74 (see FIG. 1) that uses electric power to supply electric power obtained from hydrogen.

The PCS80 has a plurality of converters 81 to 84 (four in the illustrated example) and an inverter 85.

The converter 81 is provided in the path in which the inverter 85 and the power generation facility 60 are connected (see FIG. 1). The converter 81 has a DC / DC converter function. When the converter 81 outputs the electric energy (electric power) output from the power generation facility 60 to the system power source 7 outside the creation / storage cooperation system 2, the converter 81 outputs the electric energy to the inverter 85 via the DC / DC converter. Output to. When the converter 81 outputs the electric energy (electric power) output from the power generation facility 60 to the storage facility 70, the converter 81 outputs the electric energy to the converters 82 to 84 via the DC / DC converter. Further, for example, when the electric power stored in the power storage device 71 is output to the flywheel 72, the power storage equipment 71 outputs the electric power to the flywheel 72 via the

converters

82 and 83.

The converter 82 is a bidirectional converter, and is provided in a path in which the inverter 85 and the power storage device 71 are connected (see FIG. 1). The converter 82 has a DC / DC converter function. The converter 82 outputs the electric energy output from the power generation facility 60 to the power storage device 71 via the DC / DC converter, and stores the electric energy in the power storage device 71. When the converter 82 receives the electric energy (electric power) output from the system power source 7 via the inverter 85, the converter 82 outputs the received electric energy to the power storage device 71 via the DC / DC converter to the power storage device 71. Store electricity. The converter 82 outputs the electric energy (electric power) output from the power storage device 71 to the inverter 85 via the DC / DC converter.

The converter 83 is provided in the path where the inverter 85 and the flywheel 72 are connected (see FIG. 1). The converter 83 has a bidirectional AC / DC converter function. The converter 83 outputs the electric energy (electric power) output from the flywheel 72 to the inverter 85 via the AC / DC converter. Further, the converter 83 outputs the electric power output from the inverter 85 to the flywheel 72.

The converter 84 is provided in the path in which the inverter 85 and the fuel cell 74 are connected (see FIG. 1). The converter 84 has a function of a DC / DC converter. The converter 84 outputs the electric energy (electric power) output from the fuel cell 74 to the inverter 85 via the DC / DC converter.

The inverter 85 is electrically connected to the distribution board 30. The inverter 85 is connected to the converters 81 to 84 and the hydrogen storage device 73. The inverter 85 has a function of outputting the electric energy (electric power) of the creation and storage cooperation system 2 to the outside and a function of receiving the electric energy from the outside. When the electric energy (electric power) of the creation / storage cooperation system 2 is output to the outside, the inverter 85 converts the DC power into AC power and outputs the DC power to the outside. When the inverter 85 receives the AC power output from the outside, for example, the system power supply 7, it converts the received AC power into DC power and outputs it to the storage facility 70. For example, the inverter 85 converts the AC power output from the system power supply 7 into DC power, and outputs the converted DC power to the power storage device 71 via the converter 82. The inverter 85 converts the AC power output from the grid power source 7 into DC power, and outputs the converted DC power to the flywheel 72 via the converter 83 to convert the electric power (electrical energy) into rotational motion energy. Is accumulated in the fly wheel 72. The inverter 85 converts the AC power output from the grid power source 7 into DC power, outputs the converted DC power to the hydrogen storage device 73, and uses the DC power (electrical energy) to generate hydrogen. , Accumulates electricity as hydrogen.

(2-2) Measurement system Here, the configuration of the measurement system 1 will be described.

As shown in FIG. 1, the measurement system 1 includes a first measurement device 10, a second measurement device 20, and a control device 40.

The first measuring device 10 is provided between the distribution board 30 and the creation / storage cooperation system 2 (PCS80), and measures the input / output electric energy of the inverter 85, that is, the creation / storage cooperation system 2.

The second measuring device 20 is provided between the distribution board 30 and the system power supply 7, and measures the amount of input / output power between the system power supply 7 and the distribution board 30.

The control device 40 calculates the self-consumption of RE out of the total amount of power consumed by the facility 5, that is, the amount of power consumed by the plurality of loads 50. Here, the self-consumption amount of RE is the consumption amount of electric energy obtained from RE.

Hereinafter, the detailed configurations of the first measuring device 10, the second measuring device 20, and the control device 40 will be described.

(2-2-1) First Measuring Device As shown in FIG. 1, the first measuring device 10 has a first measuring unit 11, a second measuring unit 12, and an output unit 13. The first measuring device 10 is provided in the facility 5 separately from the PCS 80. In other words, the first measuring device 10 and the PCS 80 have different housings and are provided in the facility 5.

The first measurement unit 11 measures the first electric energy input from the outside to the creation / storage cooperation system 2. Specifically, the first measurement unit 11 measures the amount of electric power output from the system power supply 7 via the distribution board 30. The first measurement unit 11 measures the electric energy obtained by integrating the electric power output from the system power supply 7 via the distribution board 30 over a certain period (for example, 30 minutes) as the first electric energy. In short, the first measurement unit 11 measures the amount of power from the system power source 7 charged (stored) in the creation / storage cooperation system 2 as the first power amount.

The second measurement unit 12 measures the second electric energy output from the creation / storage cooperation system 2 to the outside. Specifically, the second measurement unit 12 measures the amount of electric power output from the creation / storage cooperation system 2. The second measurement unit 12 measures the electric energy obtained by integrating the electric power output from the creation / storage cooperation system 2 in a certain period (for example, 30 minutes) as the second electric energy. In short, the second measurement unit 12 measures the amount of power discharged from the creation / storage cooperation system 2 as the second power amount.

Here, the connection system of the first measurement unit 11 and the second measurement unit 12 will be described.

Each of the first measurement unit 11 and the second measurement unit 12 has a first terminal and a second terminal. Each of the first measuring unit 11 and the second measuring unit 12 measures the amount of electric power input to the first terminal and output from the second terminal. Each of the first measuring unit 11 and the second measuring unit 12 does not measure the amount of electric power input to the second terminal and output from the first terminal.

The first terminal of the first measurement unit 11 is electrically connected to the distribution board 30. The second terminal of the first measuring unit 11 is electrically connected to the second terminal of the second measuring unit 12. The first terminal of the second measurement unit 12 is connected to the inverter 85.

With this connection system, the power output from the distribution board 30 is input to the first terminal of the first measurement unit 11 and output from the second terminal of the first measurement unit 11. Further, the electric power output from the first measurement unit 11 is input to the second terminal of the second measurement unit 12, and is output from the first terminal of the second measurement unit 12. On the other hand, the electric power output from the inverter 85 is input to the first terminal of the second measurement unit 12, and is output from the second terminal of the second measurement unit 12. Further, the electric power output from the second measurement unit 12 is input to the second terminal of the first measurement unit 11, and is output from the first terminal of the first measurement unit 11. As a result, the first measurement unit 11 can measure the first electric energy input to the creation / storage cooperation system 2 from the outside. Then, the second measurement unit 12 can measure the second electric energy output from the creation / storage cooperation system 2 to the outside.

The output unit 13 outputs the first electric energy measured by the first measurement unit 11 and the second electric energy measured by the second measurement unit 12 to the control device 40 by communication. Here, the communication between the first measuring device 10 and the control device 40 may be a wired communication or a wireless communication.

(2-2-2) Second Measuring Device As shown in FIG. 1, the second measuring device 20 has a power selling measuring unit 21 (third measuring unit), a power purchasing measuring unit 22, and an output unit 23. There is.

The power sales measurement unit 21 measures the third electric energy output from the distribution board 30 to the system power supply 7. Specifically, the power sale measuring unit 21 measures the amount of power output from the distribution board 30 to the system power supply 7, that is, the amount of power output to the system power supply 7 as power sale. The power sale measurement unit 21 measures the amount of power obtained by integrating the power output from the distribution board 30 over a certain period (for example, 30 minutes) as the third power amount.

The power purchase measurement unit 22 measures the fourth electric energy input from the system power supply 7 to the distribution board 30. Specifically, the power purchase measuring unit 22 measures the amount of power input from the system power source 7 to the distribution board 30, that is, the amount of power input to the distribution board 30 as power purchase. The power purchase measurement unit 22 measures the amount of power obtained by integrating the power output from the system power source 7 over a certain period (for example, 30 minutes) as the fourth power amount.

Here, the connection system of the power sale measurement unit 21 and the power purchase measurement unit 22 will be described.

Each of the power sale measurement unit 21 and the power purchase measurement unit 22 has a first terminal and a second terminal. Each of the power selling measurement unit 21 and the power purchasing measuring unit 22 measures the amount of electric energy input to the first terminal and output from the second terminal. Each of the power selling measurement unit 21 and the power purchasing measuring unit 22 does not measure the amount of power input to the second terminal and output from the first terminal.

The first terminal of the power purchase measurement unit 22 is electrically connected to the system power supply 7. The second terminal of the power purchase measurement unit 22 is electrically connected to the second terminal of the power sale measurement unit 21. The first terminal of the power sale measuring unit 21 is electrically connected to the distribution board 30.

With this connection system, the power output from the distribution board 30 is input to the first terminal of the power selling measurement unit 21, and is output from the second terminal of the power selling measuring unit 21. Further, the power output from the power sale measurement unit 21 is input to the second terminal of the power purchase measurement unit 22, and is output from the first terminal of the power purchase measurement unit 22. On the other hand, the power output from the system power supply 7 is input to the first terminal of the power purchase measurement unit 22, and is output from the second terminal of the power purchase measurement unit 22. Further, the power output from the power purchase measurement unit 22 is input to the second terminal of the power sale measurement unit 21, and is output from the first terminal of the power sale measurement unit 21. As a result, the power sales measuring unit 21 can measure the third electric energy output from the distribution board 30 to the system power supply 7. Then, the power purchase measuring unit 22 can measure the fourth electric energy input from the system power source 7 to the distribution board 30.

The output unit 23 outputs the third electric energy measured by the power selling measurement unit 21 and the fourth electric energy measured by the power purchasing measuring unit 22 to the control device 40 by communication. Here, the communication between the second measuring device 20 and the control device 40 may be a wired communication or a wireless communication.

(2-2-3) Control device As shown in FIG. 1, the control device 40 has a first communication unit 41, a second communication unit 42, and a processing unit 43. The control device 40 is, for example, a controller of a HEMS (home energy management system).

The control device 40 has, for example, a computer system having a processor and a memory. Then, when the processor executes the program stored in the memory, the computer system functions as the processing unit 43. The program executed by the processor is recorded in advance in the memory of the computer system here, but may be recorded in a non-temporary recording medium such as a memory card and provided, or provided through a telecommunications line such as the Internet. May be done.

The first communication unit 41 has a communication interface for communicating with the first measuring device 10 and the second measuring device 20. The first communication unit 41 receives the first electric energy measured by the first measurement unit 11 and the second electric energy measured by the second measurement unit 12 from the first measurement device 10.

The first communication unit 41 receives from the second measuring device 20 the third electric energy measured by the power selling measuring unit 21 and the fourth electric energy measured by the power purchasing measuring unit 22.

The second communication unit 42 has a communication interface for communicating with the server 6 via a network NT1 such as the Internet.

As shown in FIG. 1, the processing unit 43 has a first calculation unit 401, a second calculation unit 402, and a discrimination unit 403.

The first calculation unit 401 subtracts the first electric energy measured by the first measurement unit 11 of the first measurement device 10 from the second electric energy measured by the second measurement unit 12 of the first measurement device 10. Calculate the differential electric energy. As a result, the electric energy by RE is obtained from the electric energy discharged from the creation and storage cooperation system 2. The first calculation unit 401 corresponds to the difference calculation unit of the present disclosure described later.

The second calculation unit 402 calculates the self-consumption amount of the electric energy obtained from the renewable energy consumed in the facility 5 based on the first electric energy amount, the second electric energy amount, and the third electric energy amount. Specifically, the second calculation unit 402 calculates the self-consumption amount by subtracting the third electric energy amount from the differential electric energy amount calculated by the first calculation unit 401. The second calculation unit 402 transmits the calculated self-consumption amount to the server 6 via the second communication unit 42.

The discrimination unit 403 determines whether or not the device provided with the creation and storage cooperation system 2 is a device that uses renewable energy. For example, the control device 40 acquires identifiers such as the name and model number of the device provided in the creation and storage cooperation system 2 from an information terminal such as a smartphone used by the user. The control device 40 determines whether or not the device is a device that uses renewable energy based on the acquired identifier. Specifically, the discrimination unit 403 inquires to the outside whether or not the device is a device that uses renewable energy, based on the acquired identifier. The determination unit 403 determines whether or not the device is a device that uses renewable energy in response to the result of an inquiry to the outside. If the determination unit 403 determines that the device is not a device that uses renewable energy, that is, if it determines that the device is a device that generates electric energy using fossil fuel or the like, a message or the like indicating that compensation cannot be received. Notify the user.

(2-3) Server The server 6 is configured to be able to communicate with the control device 40 via the network NT1.

The server 6 has, for example, a computer system having a processor and a memory. Then, when the processor executes the program stored in the memory, the computer system functions as the server 6. The program executed by the processor is recorded in advance in the memory of the computer system here, but may be recorded in a non-temporary recording medium such as a memory card and provided, or provided through a telecommunications line such as the Internet. May be done.

When the server 6 receives the self-consumption amount of RE at the facility 5 transmitted from the control device 40 of the measurement system 1, the server 6 stores the received self-consumption amount.

The server 6 determines the consideration based on the stored self-consumption amount. For example, the server 6 calculates the total value of self-consumption for a predetermined period (for example, one month), and determines the consideration generated for the calculated total value.

Further, the server 6 may notify the user or the like of the transition of the self-consumption amount for a predetermined period (for example, one month).

(3) Operation Here, the operations of the measurement system 1 and the server 6 will be described mainly with reference to FIG.

The power purchase measurement unit 22 of the second measuring device 20 measures the amount of power from the system power source 7 as the fourth power amount, and outputs the measured fourth power amount to the control device 40 (steps S1 and S2).

The first measurement unit 11 of the first measurement device 10 measures the amount of electric power input from the outside to the creation and storage cooperation system 2 as the first electric energy, and outputs the measured first electric energy to the control device 40 (step). S3, S4).

The second measurement unit 12 of the first measurement device 10 measures the electric power output to the outside from the creation and storage cooperation system 2 as the second electric energy, and outputs the measured second electric energy to the control device 40 (step S5). , S6).

The power selling measurement unit 21 of the second measuring device 20 measures the amount of power from the distribution board 30 as the third power amount, and outputs the measured third power amount to the control device 40 (steps S7 and S8).

The first calculation unit 401 of the control device 40 calculates the differential electric energy using the first electric energy and the second electric energy received from the first measurement device 10 via the first communication unit 41 (step S9). .. Specifically, the first calculation unit 401 subtracts the first electric energy from the second electric energy to calculate the differential electric energy.

The second calculation unit 402 of the control device 40 uses the first electric energy, the second electric energy, and the third electric energy received from the second measuring device 20 via the first communication unit 41 to consume RE in-house. The amount is calculated (step S10). Specifically, the second calculation unit 402 calculates the self-consumption of RE by subtracting the third electric energy from the differential electric energy calculated from the first electric energy and the second electric energy.

The second communication unit 42 outputs (transmits) the self-consumption amount to the server 6 in order for the server 6 to determine the consideration generated for the self-consumption amount of RE calculated by the second calculation unit 402 (step). S11).

The server 6 determines the consideration generated for the self-consumption received from the measurement system 1 (step S12).

(4) Advantages As described above, the first measurement unit 11 of the first measurement device 10 of the embodiment measures the amount of electric power input from the outside to the creation and storage cooperation system 2 as the first electric energy. The second measurement unit 12 of the first measurement device 10 measures the amount of power output to the outside from the creation / storage cooperation system 2 as the second power amount. The first calculation unit 401 of the control device 40 subtracts the first electric energy from the second electric energy to calculate the differential electric energy.

The first electric energy is the electric energy output by the system power source 7, and is stored in the storage facility 70. Further, the storage facility 70 also stores the electric energy (electric power) obtained by the power generation facility 60 using RE. Therefore, by subtracting the first electric energy from the second electric energy (discharged electric energy) output from the creation and storage cooperation system 2, the electric energy generated by the creation and storage cooperation system 2, that is, RE is used. The amount of electrical energy obtained can be obtained.

Therefore, when the stored electric power is discharged, the measurement system 1 uses the renewable energy, which is the electric energy generated by the creation / storage cooperation system, among the discharged electric energy, to obtain the electric energy. The amount (electric energy) can be measured.

Further, the second measuring device 20 of the measuring system 1 measures the sold electric energy (third electric energy). The second calculation unit 402 of the control device 40 subtracts the third electric energy from the differential electric energy to calculate the self-consumption of RE.

The differential electric energy output from the creation and storage cooperation system 2 is consumed by the plurality of loads 50 of the facility 5, or is output to the system power supply 7. Therefore, by subtracting the third electric energy from the differential electric energy, the electric energy of RE consumed in the facility 5, that is, the self-consumption of RE can be obtained.

The control device 40 transmits the self-consumption amount of RE to the server 6 in order to determine the consideration generated for the self-consumption amount of RE. In short, it will add value to RE's self-consumption, and the value of RE's self-consumption can be increased.

Further, in the embodiment, the first measuring device 10 is a separate body from the PCS 80. Assuming that the first measuring device 10 has the same housing as the PCS 80, when the first measuring device 10 is replaced, the PCS 80 itself needs to be replaced. Therefore, the converters 81 to 84 and the inverter 85 must be replaced even if they do not need to be replaced. Therefore, by separating the first measuring device 10 from the PCS 80, the replacement target can be kept to the minimum necessary.

Although the first measuring device 10 is configured to be separate from the PCS80, even if it has the same housing as the PCS80, it is within the scope of the technical idea of the present disclosure.

(5) Modification example (5-1) Modification example 1
In the above embodiment, the control device 40 is configured to calculate both the differential electric energy amount and the self-consumption amount of RE, but is not limited to this configuration.

The first measuring device 10 may calculate the differential electric energy. In this case, the first measuring device 10 outputs the calculated differential electric energy to the control device 40. The control device 40 calculates the self-consumption amount of RE by using the differential electric energy received from the first measuring device 10 and the third electric energy received from the second measuring device 20.

Alternatively, the server 6 may calculate the differential electric energy and the self-consumption of RE. In this case, the control device 40 transmits the first electric energy and the second electric energy received from the first measuring device 10 and the third electric energy received from the second measuring device 20 to the server 6.

Alternatively, the control device 40 may calculate the differential electric energy, and the server 6 may calculate the self-consumption of RE.

(5-2) Modification 2
In the above embodiment, it is premised that the electric energy (electric power) output from the creation / storage cooperation system 2 is the electric energy using RE.

However, the electric energy (electric power) output from the creation and storage cooperation system 2 may include electric energy using fossil fuels, that is, electric energy obtained without using RE.

In this case, for a device that generates electric energy without using RE, a measuring device that measures the amount of electric power is provided on the output side of the generated electric energy (electric power). For example, a measuring device for measuring electric energy is provided on the output side of a fuel cell that uses gas. This makes it possible to measure the amount of electric energy (electric energy) generated without using RE. The first calculation unit 401 subtracts the second electric energy and the amount of electric energy generated without using RE from the first electric energy, so that the electric energy (electric power) output from the creation and storage cooperation system 2 Of these, RE can be used to determine the amount of electrical energy generated.

Note that a device that generates electrical energy without using RE may output electric power (AC power) via an inverter different from the inverter 85 of PCS80. In this case, it is preferable that the device that generates electric energy without using RE is connected to the distribution board 30 from the other inverter without going through the first measuring device 10.

(5-3) Modification 3
In the above embodiment, the server 6 is configured to determine the consideration for one facility 5, but is not limited to this configuration.

The server 6 may set a plurality of facilities 5 as one group and determine the consideration for the group. In this case, the server 6 calculates the total value of the self-consumption amount in the predetermined period for each of the plurality of facilities 5. The server 6 calculates the sum of the total values of the plurality of facilities 5 as the amount of self-consumption in a predetermined period in the group. The server 6 determines the consideration incurred for the self-consumption of the group in a predetermined period. In this case, the determined consideration is assigned to each of the plurality of facilities 5. Alternatively, when the consideration is cash or points, the result of dividing the determined consideration by the number of the plurality of facilities 5 is assigned to each of the plurality of facilities 5.

(5-4) Modification 4
In the above embodiment, the control device 40 (discrimination unit 403) is configured to acquire the identifier of the device included in the creation / storage cooperation system 2 from the information terminal, but is not limited to this configuration.

The control device 40 may acquire the identifier of the device connected to each of the converters 81 to 84 by communicating with each of the converters 81 to 84. Alternatively, the control device 40 communicates with the power generation equipment 60 and the storage equipment 70 (power storage device 71, flywheel 72, hydrogen storage device 73) to generate power generation equipment 60, power storage device 71, flywheel 72, and hydrogen. The respective identifiers of the storage device 73 may be acquired.

(5-5) Modification 5
In the above embodiment, the solar power generation facility has been described as an example of the power generation facility 60. However, the power generation facility 60 is not limited to the photovoltaic power generation facility.

The power generation facility 60 may be a hydroelectric power generation facility or a wind power generation facility. In this case, when the generated electric energy (electric power) is alternating current, the converter provided in the path in which the power generation facility 60 and the inverter 85 are connected has the function of an AC / DC converter.

Further, the creation and storage cooperation system 2 is configured to include one power generation facility 60, but is not limited to this configuration. The creation and storage cooperation system 2 may be provided with a plurality of power generation facilities 60.

Further, the creation and storage cooperation system 2 is configured to include one inverter 85, but is not limited to this configuration. The creation and storage cooperation system 2 may be configured to include a plurality of inverters 85. In this case, each of the plurality of inverters 85 is connected to the first measuring device 10.

(Other variants)
The above embodiment is only one of the various embodiments of the present disclosure. The above-described embodiment can be changed in various ways depending on the design and the like as long as the object of the present disclosure can be achieved. Further, the same function as that of the measurement system 1 may be realized by a measurement method, a computer program, a non-temporary recording medium on which the program is recorded, or the like. The measurement method according to one embodiment includes a power generation facility 60 that uses renewable energy, an electric energy that the power generation facility 60 obtains from renewable energy, or a storage facility 70 that stores other energy converted from the electric energy. It is a measurement method in the measurement system used in the creation and storage cooperation system 2 provided with. The measuring method includes a first measuring step and a second measuring step. The first measurement step measures the first electric energy input from the outside to the creation and storage cooperation system 2. The second measurement step measures the second electric energy output from the creation / storage cooperation system 2 to the outside. The program according to one aspect is a program for making a computer system function as the above-mentioned measurement method.

The execution subject of the measurement system 1 or the measurement method in the present disclosure includes a computer system. A computer system has a processor and memory as hardware. When the processor executes the program recorded in the memory of the computer system, the function as the execution subject of the measurement system 1 or the measurement method in the present disclosure is realized. The program may be pre-recorded in the memory of the computer system or may be provided through a telecommunication line. The program may also be recorded and provided on a non-temporary recording medium such as a memory card, optical disk, or hard disk drive that can be read by a computer system. A processor in a computer system is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or a large scale integrated circuit (LSI). A plurality of electronic circuits may be integrated on one chip, or may be distributed on a plurality of chips. The plurality of chips may be integrated in one device, or may be distributed in a plurality of devices.

The measurement system 1 which is a computer system may be a system composed of one or a plurality of computers. For example, at least a part of the functions of the measurement system 1 may be realized by the cloud (cloud computing).

(Summary)
As described above, the measurement system (1) of the first aspect is used in the creation and storage cooperation system. The creation and storage cooperation system (2) is a power generation facility (60) that uses renewable energy, power obtained from the grid power source (7), and electric energy or electric energy obtained from renewable energy by the power generation facility (60). It is equipped with a storage facility (70) for storing other energy converted from. The measurement system (1) includes a first measurement unit (11) and a second measurement unit (12). The first measurement unit (11) measures the first electric energy input from the outside to the creation / storage cooperation system (2). The second measurement unit (12) measures the second electric energy output from the creation / storage cooperation system (2) to the outside.

According to this configuration, the amount of electric energy generated by the creation and storage cooperation system can be obtained by using the first electric energy and the second electric energy. Therefore, the measurement system (1) can measure the amount of electric energy (electric energy) generated by the creation / storage cooperation system among the discharged electric energy when the stored electric power is discharged.

In the measurement system (1) of the second aspect, in the first aspect, the energy output from the creation and storage cooperation system (2) to the outside is electric energy using renewable energy.

According to this configuration, when the stored electric power is discharged, the amount of electric energy obtained by using the renewable energy which is the electric energy generated by the creation and storage cooperation system among the discharged electric energy ( (Electric energy) can be measured.

The measurement system (1) of the third aspect further includes a discrimination unit (403) in the first or second aspect. The discriminating unit (403) determines whether or not the energy output from the creation / storage cooperation system (2) to the outside is electrical energy obtained from renewable energy.

According to this configuration, it is possible to determine whether or not the energy output from the creation and storage cooperation system (2) to the outside is electrical energy obtained from renewable energy.

In the measurement system (1) of the fourth aspect, in any one of the first to third aspects, the first measurement unit (11) sets the cumulative value of electric power in a certain period as the first electric energy. The second measurement unit (12) uses the cumulative value of electric power in a certain period as the second electric energy.

According to this configuration, the first measurement unit (11) sets the cumulative value of the power in a certain period as the first electric energy, so that the measurement is performed even when the power data cannot be acquired in a part of the certain period. The accuracy of the first electric energy can be improved. Similarly, the second measurement unit (12) uses the cumulative value of the power in a certain period as the second electric energy, so that the second measurement unit (12) measures the power data even if the power data cannot be acquired in a part of the certain period. 2 The accuracy of electric energy can be improved.

The measurement system (1) of the fifth aspect further includes a difference calculation unit (first calculation unit 401) in any one of the first to fourth aspects. The difference calculation unit calculates the difference between the first electric energy and the second electric energy.

According to this configuration, when the stored electric power is discharged, it is possible to measure the amount of electric energy (electric energy) generated by the creation and storage cooperation system among the discharged electric energy.

The measurement system (1) of the sixth aspect further includes a third measurement unit (power sale measurement unit 21) in any one of the first to fifth aspects. The third measuring unit measures the third electric energy output to the external system power supply (7).

According to this configuration, of the electric energy output from the creation and storage cooperation system (2), the amount of electric power sold to the grid power supply (7) can be measured as the third electric energy.

The measurement system (1) of the seventh aspect further includes a consumption amount calculation unit (second calculation unit 402) in the sixth aspect. The consumption calculation unit is based on the first electric energy, the second electric energy, and the third electric energy, and the electric energy obtained from the renewable energy in the facility (5) which receives the electric energy from the grid power source (7). Calculate the amount of self-consumption, which is the amount of consumption of.

According to this configuration, it is possible to obtain the amount of RE consumed in the facility (5) out of the amount of electricity output from the creation and storage cooperation system (2).

In the measurement system (1) of the eighth aspect, in any one of the first to seventh aspects, the first measurement unit (11) and the second measurement unit (12) are different from the creation and storage cooperation system (2). It is provided separately.

According to this configuration, the replacement target can be kept to the minimum necessary.

The measurement system (1) of the ninth aspect further includes an output unit (13) in any one of the first to eighth aspects. The output unit (13) outputs the first electric energy and the second electric energy by communication.

According to this configuration, the output destinations of the first electric energy and the second electric energy can be provided separately from the first measurement unit (11) and the second measurement unit (12).

The measurement method of the tenth aspect is the measurement method in the measurement system (1) used in the creation and storage cooperation system (2). The creation and storage cooperation system (2) is a power generation facility (60) that uses renewable energy, electric power obtained from a grid power source (7), and electric energy or electric energy obtained from renewable energy by the power generation facility (60). It is equipped with a storage facility (70) for storing other energy converted from. The measuring method includes a first measuring step and a second measuring step. The first measurement step measures the first electric energy input from the outside to the creation and storage cooperation system (2). The second measurement step measures the second electric energy output from the creation / storage cooperation system (2) to the outside.

According to this measurement method, when the stored electric power is discharged, it is possible to measure the amount of electric energy (electric energy) generated by the creation and storage cooperation system among the discharged electric energy.

The measurement method of the eleventh aspect further includes a third measurement step in the tenth aspect. The third measurement step measures the third electric energy output to the external system power supply (7).

According to this measurement method, of the electric energy output from the creation and storage cooperation system (2), the amount of electric power sold to the grid power supply (7) can be measured as the third electric energy.

The measurement method of the twelfth aspect further includes a consumption calculation step in the eleventh aspect. The consumption calculation step is self-consumption in which renewable energy is consumed in the facility (5) that receives power from the grid power source (7) using the first electric energy, the second electric energy, and the third electric energy. Calculate the amount.

According to this measurement method, it is possible to obtain the amount of RE consumed at the facility (5) out of the amount of electricity output from the creation / storage cooperation system (2).

The measurement method of the thirteenth aspect further includes an output step in the twelfth aspect. In the output step, the self-consumption amount is output to the server (6) in order for the server (6) to determine the consideration generated for the self-consumption amount.

According to this measurement method, the value of RE's self-consumption is added, and the value of RE's self-consumption can be increased.

The program of the fourteenth aspect is a program for causing a computer to execute the measurement method of any one of the tenth to thirteenth aspects.

According to this program, when the stored electric power is discharged, it is possible to measure the amount of electric energy (electric energy) generated by the creation and storage cooperation system out of the discharged electric energy.

1 Measurement system 2 Creation and storage cooperation system 5 Facilities 6 Servers 7 System power supply 11 1st measurement unit 12 2nd measurement unit 13 Output unit 21 Power sales measurement unit (3rd measurement unit)
60 Power generation equipment 70 Storage equipment 401 1st calculation unit (difference calculation unit)
402 Second calculation unit (consumption calculation unit)
403 Discriminator

Claims

It is provided with a power generation facility that uses renewable energy, a storage facility that stores electric power obtained from a system power source, and an electric energy obtained from the renewable energy or other energy converted from the electric energy. It is a measurement system used in the creation and storage cooperation system.
The first measuring unit that measures the first electric energy input from the outside to the creation and storage cooperation system, and
A second measuring unit for measuring a second electric energy output from the creation and storage cooperation system to the outside is provided.
Measurement system.
The energy output from the creation and storage cooperation system to the outside is the electric energy using renewable energy.
The measurement system according to claim 1.
Further, a discriminating unit for determining whether or not the energy output from the creation and storage cooperation system to the outside is the electrical energy obtained from the renewable energy is provided.
The measurement system according to claim 1 or 2.
The first measuring unit sets the cumulative value of electric power in a certain period as the first electric energy.
The second measuring unit uses the cumulative value of electric power in the fixed period as the second electric energy.
The measurement system according to any one of claims 1 to 3.
A difference calculation unit for calculating the difference between the first electric energy and the second electric energy is further provided.
The measurement system according to any one of claims 1 to 4.
A third measuring unit for measuring the amount of third power output to the system power supply as the outside is further provided.
The measurement system according to any one of claims 1 to 5.
A self-consumption of the electrical energy obtained from the renewable energy at a facility that receives power from the grid power source based on the first electric energy, the second electric energy, and the third electric energy. Further equipped with a consumption calculation unit for calculating consumption,
The measurement system according to claim 6.
The first measurement unit and the second measurement unit are provided separately from the creation and storage cooperation system.
The measurement system according to any one of claims 1 to 7.
An output unit that outputs the first electric energy and the second electric energy by communication is further provided.
The measurement system according to any one of claims 1 to 8.
It is provided with a power generation facility that uses renewable energy and a storage facility that stores electric power obtained from a grid power source, or electric energy obtained from the renewable energy or other energy converted from the electric energy. It is a measurement method in the measurement system used in the creation and storage cooperation system.
The first measurement step of measuring the first electric energy input from the outside to the creation and storage cooperation system, and
The second measurement step of measuring the second electric energy output from the creation and storage cooperation system to the outside is included.
Measurement method.
A third measurement step of measuring the amount of third power output to the system power supply as the outside is further included.
The measuring method according to claim 10.
Using the first electric energy, the second electric energy, and the third electric energy, the consumption amount calculation for calculating the self-consumption amount of the renewable energy consumed in the facility receiving the electric power from the system power source. Including more steps,
The measuring method according to claim 11.
An output step of outputting the self-consumption to the server is further included in order for the server to determine the consideration generated for the self-consumption.
The measuring method according to claim 12.
A program for causing a computer to execute the measurement method according to any one of claims 10 to 13.