JP4925631B2 - System linkage system and central server for self-power consumption data - Google Patents

Description

  The present invention relates to a photovoltaic power generation system, a power conditioner that converts DC power generated by the photovoltaic power generation system into AC power, and a plurality of houses and offices equipped with a load that consumes power (hereinafter referred to as “power conditioner”). , Referred to as “power consumption unit”) relates to a grid connection system that supplies a part of the generated power to the grid.

In a conventional grid-linked system, the amount of power sold by supplying a part of the power generated by the power consumption unit to the system, the amount of power purchased from the system to the power consumption unit, and the amount of power generated by the solar power generation system Such data has been measured (see Patent Document 1 below).
By the way, when applying for clean energy such as power generation by a solar power generation system, a green power certificate is issued. And this green electric power certificate becomes the object of trade (refer to the following patent documents 2). Therefore, it has become possible to apply for the amount of power consumed by each home, obtain a green power certificate, and sell the green power certificate. However, although the amount of time required for acquiring and purchasing a green power certificate is complicated, it is not practical to perform the procedure for each household because the amount of self-power consumption of each household is small. Therefore, we considered the procedure to collect the self-consumed energy of multiple households, but efficiently collected data on the self-consumed energy for each power consumption unit equipped with a solar power generation system. There was no system for determining the amount allocated to power consumption.
JP 2004-192473 A JP 2003-108655 A

  The problem to be solved is that there is no system that efficiently collects data on the amount of power consumed by the unit of power consumption equipped with a photovoltaic power generation system and determines the amount of distribution for that amount of energy consumed. It is.

The system linkage system according to the present invention includes a photovoltaic power generation panel (2), converts DC power generated by the photovoltaic power generation panel into AC power, and converts all or part of the converted AC power to the system (6). It is used for a power consumption unit (1) configured to include a power conditioner (3) that can be supplied and a load (9) that consumes the AC power. And this grid connection system memorize | stores the data of the self-power consumption consumed by the load in a power consumption unit among the power quantities converted into AC power by the power conditioner, and is connected to the Internet (16) and self-power consumption This self-power consumption data is sent to the server (17) that buys and sells the right of the self-power consumption, and the server receives each self-power consumption data from a plurality of different power consumption units. Then, after bidding, the corresponding right is bid, and the distribution amount for each power consumption unit is determined based on the winning bid amount and the self-power consumption amount .

In addition, the server may subtract the cost from the successful bid amount and distribute it evenly according to the self-power consumption .

In addition, the server may allocate a larger amount of distribution as the power consumption unit has a larger amount of power consumption .
The inverter may receive the distribution amount data from the server and display the distribution amount on a display screen .

The central server for self-power consumption data of the present invention includes a solar power generation system, a power conditioner that converts DC power generated by the solar power generation system into AC power, and a load that consumes power. A plurality of power consumption units are used in a grid-linking system that enables a part of the generated power to be supplied to the grid, and controls the power amount data self-consumed by the plurality of power consumption units. Then, data acquisition means for acquiring data related to the self-power consumption from the server for power consumption units provided in each power consumption unit, and allocation to the self-power consumption from the data related to the acquired self-power consumption comprising means for generating a forehead, a means for storing data and allocations of quiescent power amount corresponding to the respective power units the central server for storage area, and means for externally outputting the allocations, data Each of the power consumption units receives data from a plurality of different power consumption units by the acquisition means, aggregates them, and then bids for the corresponding rights. Determine the amount of allocation .

  According to the present invention, this data can be transmitted to a server on the Internet as the self-consumed power generated by the self-consumed solar power generation panel within the power consumption unit. This green power certificate can be sold without obtaining a certificate.

  Further, when the central server includes means for generating total self-power consumption by summing the self-power consumption of a plurality of power consumption units, and means for externally outputting data of the total self-power consumption In this case, the total work of the total power consumption becomes easy.

  For each power consumption unit, the photovoltaic power generation system has the purpose of efficiently collecting data on the amount of power consumed by each unit of power consumption equipped with a photovoltaic power generation system and determining the amount of distribution for that amount of power consumption. The generated power amount detecting means for detecting the generated power amount of the generated power, the sold power amount detecting means for detecting the sold power amount supplied to the system, and the data from the generated power amount detecting means and the sold power amount detecting means are inputted. And a power consumption unit server that outputs data related to the self-power consumption amount of the power consumption unit, and the central server that can communicate with each of the power consumption unit servers is connected to each power consumption unit server. Data acquisition means for acquiring data related to self-power consumption, and generating a distribution amount for self-power consumption from the acquired data related to self-power consumption It means, and means for storing data and allocations of quiescent power amount corresponding to the respective power units the central server for storage area, realized by causing and means for externally outputting the allocations.

  Next, an embodiment of the system linkage system according to the present invention will be described with reference to FIGS. FIG. 1 is a schematic diagram of a system linkage system according to the present invention. FIG. 2 is an explanatory diagram of an apparatus connected to a communication network such as the Internet. FIG. 3 is an explanatory diagram of a table related to the power consumption unit of the central server storage area. FIG. 4 is an explanatory diagram of a table related to bidding in the storage area for the central server. FIG. 5 is a flowchart of the power consumption unit server regarding the self-power consumption data. FIG. 6 is a flowchart of the central server regarding the self-power consumption data.

  In FIG. 1, a power consumption unit 1 such as a house or office is provided with a solar battery panel 2 of a solar power generation system T. The solar battery panel 2 is connected to a backflow prevention diode or the like (not shown). It is connected to the input section of a power conditioner (shown as “power conditioner” in FIG. 1) 3. The power conditioner 3 boosts the voltage of the DC power input from the solar battery panel 2 with a boost chopper (not shown), and uses an inverter (not shown) with the same frequency as a predetermined frequency (frequency of the grid 6). 6 is converted into pseudo sine wave AC power higher than the voltage 6 and output to the wiring 8 in the power consumption unit 1. A load 9 such as a refrigerator or a TV that consumes power is connected to the wiring 8, and an end of the wiring 8 is connected to the system 6. When the electric power generated by the solar power generation system T is larger than the power consumption of the load 9, a part of the generated power from the solar power generation system T is supplied to the system 6 (that is, sold). . On the other hand, when the power generated by the solar power generation system T is smaller than the power consumption of the load 9, power is supplied from the system 6 to the wiring 8 (that is, purchased).

  Further, a power generation meter 11 that detects the amount of generated power of the solar power generation system T (the solar power generation system T has a voltage before being converted into alternating current so that the maximum amount of power generation can be obtained for the solar cell panel 2 and The current is controlled, and this power value may be used), and a watt-hour meter 12 for power sale / power purchase for detecting the amount of power sold / purchased to the grid 6 (for power sale) When using an electronic watt-hour meter, the output is used as the amount of electricity sold. When using an analog meter, the amount of electricity sold (electricity) is separately calculated from the values of the ammeter and voltmeter) It has been. Furthermore, a power consumption unit server 13 is incorporated in the power conditioner 3. The power consumption unit server 13 is connected to the watt hour meters 11 and 12 so as to be able to communicate wirelessly or by wire, and can acquire measurement data from the watt hour meters 11 and 12. A plurality of power consumption units 1 configured in this way are connected to the system 6.

  The power consumption unit server 13 includes an address management function, a memory, a calculation function, a clock, a capacitor as a backup power source for the clock, a wireless LAN function, and the like, and has a separate device for connecting to the Internet (such as a broadband router). 2 can be connected to a communication network 16 such as the Internet shown in FIG.

  In FIG. 2, a communication network 16 to which the power consumption unit server 13 is connected is connected to a self-power consumption data central server 17 and a bidding terminal 18 so as to communicate with each other. The central server 17 includes a network interface, a central processing unit (CPU) as control means, a memory such as a RAM, and a hard disk (HDD). The bidding terminal 18 is configured by a personal computer or the like, and includes a network interface, a central processing unit (CPU) as a control means, a memory such as a RAM, a hard disk (HDD), a display device, a numeric keypad, a mouse, and a keyboard. An input device is provided.

  Various tables are stored in the storage area (for example, hard disk or RAM) of the central server 17. Next, this readable / writable table will be described. The power consumption unit data table of FIG. 3 stores the self-consumption power amount, the distribution amount, etc. for each power consumption unit separately contracted (information that can specify the power consumption unit). The total of all power consumption units related to the power consumption and the distribution amount is stored. In addition, the bid table of FIG. 4 stores a bid amount, a successful bid flag indicating the presence or absence of a successful bid, and the like for each bidder.

  The power consumption unit server 13 and the central server 17 of the system linkage system configured as described above collect the self-power consumption of the power consumption unit 1 and determine the distribution amount that is the consideration of the self-power consumption. is doing. A main flowchart for collecting the self-power consumption and determining the distribution amount will be described.

  The flow of the power consumption unit server 13 is shown in FIG. In step 1, the power consumption unit server 13 obtains data of the power generation amount of the solar power generation system T from the power generation amount meter 11 serving as the power generation amount detection means. In step 2, the power consumption unit server 13 receives the amount of power supplied from the power consumption unit 1 to the grid 6 (that is, the sales amount) from the power sale / purchase watt-hour meter 12 serving as the power sale power amount detection means. Obtain data on the amount of electricity.

  Next, in step 3, the power consumption unit server 13 subtracts the amount of power sold from the amount of power generated by the solar power generation system T to calculate the amount of self-power consumption, and goes to step 4. In step 4, the power consumption unit server 13 outputs self-power consumption data to the central server 17 through the communication network 16.

  The flow of the central server 17 is illustrated in FIG. In step 11, the central server 17 obtains self-power consumption data from the power consumption unit server 13, and in step 12, the obtained self-power consumption data is stored in the power consumption unit data table of FIG. , Stored for each power consumption unit. In step 13, when the self-power consumption data is obtained from the power consumption unit server 13 of all the power consumption units, the data is summed for each unit time, and the total self-power consumption (hereinafter referred to as the total self-power consumption) for the predetermined period. , Referred to as “total self-power consumption”), and go to step 14.

  In step 14, the central server 17 outputs total self-power consumption data to the bid terminal 18. Next, in step 15, the bidder confirms the total self-power consumption at the bid terminal 18, determines the bid price, and outputs the bid price data from the bid terminal 18 to the central server 17. The central server 17 stores the input bid amount data in the bid table of FIG. 4 for each bidder. When the bidding is completed in step 16, the central server 17 selects the highest bid price data, determines the successful bid price and the bidder (that is, the successful bidder), and makes a successful bid in the bid table corresponding to the bidder. Set a flag. In step 17, the central server 17 determines the allocation amount to each power consumption unit based on the winning bid amount, using a mathematical formula or a table indicating the relationship between the winning bid amount and the allocated amount. The method for determining the amount of allocation can be selected as appropriate. For example, 1) subtract the cost from the winning bid amount and distribute it evenly according to the amount of self-power consumption. Can be increased. Then, the central server 17 stores the determined distribution amount for each power consumption unit in the power consumption unit data table of FIG. Next, in step 18, the central server 17 outputs the allocated amount of each power consumption unit to the corresponding power consumption unit server 13 or the like. When the server 13 for power consumption unit receives the distribution amount data, it displays the distribution amount on a display screen of a remote controller (not shown) of the power conditioner 3.

In this way, the central server 17 uses 1) data acquisition means for acquiring data related to the self-power consumption from each power consumption unit server 13 and 2) from the data related to the acquired self-power consumption. Means for generating a distribution amount for self-power consumption, 3) means for storing self-power consumption data and distribution amount corresponding to each power consumption unit 1 in the storage area for the central server, and external output of the distribution amount Means.
As described above, the central server 17 and the power consumption unit server 13 include means for executing the actions corresponding to the actions to be executed, in addition to the above means.

  Since the system linkage system is configured in this way, the central server 17 can know the self-power consumption amount, the total self-power consumption amount, and the distribution amount of each power consumption unit 1. Therefore, it is possible to collect a plurality of power consumption units 1, apply for the self-consumed power amount, obtain a green power certificate, and sell the green power certificate. As a result, it is not necessary to perform procedures for obtaining a green power certificate or buying and selling for each power consumption unit 1.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various change is performed within the range of the summary of this invention described in the claim. It is possible. Examples of modifications of the present invention are illustrated below.

( 1 ) In the embodiment, the power consumption unit server 13 is incorporated in the power conditioner 3, but may not be incorporated in the power conditioner 3. However, if it is incorporated in the power conditioner 3, it can be operated even in the event of a power failure of the grid 6, and data on the amount of self-power consumption can be obtained.
( 2 ) The allocated amount does not necessarily have to be an amount, but can be a point.

( 3 ) The electric energy detection means does not necessarily need to be an electric energy meter, and may be one that measures current data and voltage data individually.
( 4 ) Sampling of data such as electric energy and bidding intervals can be selected as appropriate. For example, it can be performed every week or every month.

( 5 ) In the embodiment, the power consumption unit server 13 outputs self-power consumption data to the central server 17 as data related to the self-power consumption of the power consumption unit. 17, it is only necessary to know the self-power consumption amount of each power consumption unit 1, and it is also possible to output the data of the power generation amount and the data of the power sale amount. However, it is preferable to transmit self-power consumption data.

  It is possible to efficiently collect data on the amount of power consumed by the unit of power consumption provided with the solar power generation system, and determine the amount of distribution for the amount of power consumed by the device. Therefore, it is most suitable to apply to the grid connection system which supplies a part of the power generated by the solar power generation system to the grid while self-consuming.

FIG. 1 is a schematic diagram of a system linkage system according to the present invention. FIG. 2 is an explanatory diagram of an apparatus connected to a communication network such as the Internet. FIG. 3 is an explanatory diagram of a table related to the power consumption unit of the central server storage area. FIG. 4 is an explanatory diagram of a table related to bidding in the storage area for the central server. FIG. 5 is a flowchart of the power consumption unit server regarding the self-power consumption data. FIG. 6 is a flowchart of the central server regarding the self-power consumption data.

T Solar power generation system 1 Power consumption unit 2 Solar panel 3 Power conditioner 6 System 9 Load 11 Power generation meter (power generation amount detection means)
12 Electricity meter for selling / buying electricity (electricity meter, means for detecting electric energy sold)
13 Server for power consumption unit 17 Central server

Claims (5)

A photovoltaic power generation panel, a power conditioner that converts DC power generated by the photovoltaic power generation panel into AC power and supplies all or part of the converted AC power to the system, and the AC power A system linkage system used for a power consumption unit configured with a load that consumes power,
This grid connection system stores data on the amount of power consumed by the load within the power consumption unit out of the amount of power converted into AC power by the power conditioner. to the server to buy and sell the right of self-power consumption Ri send the data of this self-power consumption,
The server receives and aggregates data of each self-power consumption amount from a plurality of different power consumption units, and then bids for the corresponding right, and each power consumption unit is based on the successful bid amount and the self-power consumption amount. A system linkage system characterized by determining a distribution amount for each . 2. The system linkage system according to claim 1, wherein the server subtracts the cost from the successful bid amount and distributes it equally according to the self-power consumption . 2. The system linkage system according to claim 1, wherein the server distributes the allocation amount as the power consumption unit having a larger amount of self-power consumption . 4. The system linkage system according to claim 1, wherein the power conditioner receives data of the distribution amount from the server and displays the distribution amount on a display screen . 5. A plurality of power consumption units including a photovoltaic power generation system, a power conditioner that converts DC power generated by the photovoltaic power generation system into AC power, and a load that consumes power are part of the generated power A self-power consumption data management server that controls power consumption data self-consumed by the plurality of power consumption units.
Data acquisition means for acquiring data related to the self-power consumption from the server for power consumption units provided in each power consumption unit, and a distribution amount for the self-power consumption from the data related to the acquired self-power consumption Generating means, means for storing self-power consumption data and distribution amount corresponding to each power consumption unit in the central server storage area, and means for outputting the distribution amount externally,
The data acquisition means receives the data of each self-power consumption from a plurality of different power consumption units, aggregates them, bids for the corresponding right, and each power consumption unit based on the winning bid amount and the self-power consumption A central server for self-power consumption data, characterized in that a distribution amount for each is determined .

Images