JP2021120888A - Photovoltaic power generation system - Google Patents

Abstract

To enable a user owning a general dwelling house to install a photovoltaic power generation facility on the roof, etc., of the house and utilize it without bearing economic burdens due to facility purchase, as well as lighten an electric power supplier's burdens of management jobs regarding the photovoltaic power generation facility.SOLUTION: A photovoltaic power generation facility 6 owned by an investor is installed in user's premises, an electric power retailer collects, for each prescribed period; the use charge of generated electric power and the electricity charge of fed-in electric power from the user; and amounts equivalent to the user's consumption of generated electric power and the reverse electric power flow sold to an electric power wholesaler are provided to the investor. The target amount of the investor's cumulative amount of revenues from said provision is set, and the investor's cumulative amount of revenues is calculated by an electric power charge management device on the basis of the amount of reverse electric power flow and the generated amount of electric power measured for each prescribed period. When the cumulative amount of revenues reaches the set target amount, detection information is outputted to the effect that the ownership of the photovoltaic power generation facility 6 is transferable from the investor to the user.SELECTED DRAWING: Figure 3

Description

The present invention relates to a photovoltaic power generation system that generates electricity by, for example, a solar panel installed in a general house or the like.

In recent years, the sale of electric power to ordinary houses has become possible not only by conventional electric power companies that generate and distribute electric power, but also by electric power retailers. As an electric power company, this electric power retailer purchases wholesale electric power from an electric power company and sells the wholesale electric power to consumers. Recently, he has also been involved in the photovoltaic power generation system business.

Photovoltaic power generation is a power generation method that directly converts sunlight into electric power using solar cells, and is useful for reducing greenhouse gas emissions such as carbon dioxide and suppressing deterioration of the global environment. be. For this reason, a feed-in tariff system for renewable energy has been established to popularize photovoltaic power generation, but at present, the penetration rate of photovoltaic power generation systems in Japan is only about 7%.

In order to increase this penetration rate, it is desirable to install solar panels on the roofs of ordinary houses where a lot of sunny space remains to generate power, but in the past, the owners of ordinary houses usually used the sun. If you have to purchase a photovoltaic power generation facility and want to introduce solar power generation when building a new house, but in reality you give up the introduction due to budgetary reasons, or install a solar panel on the roof of an existing house etc. Even if you want to, there are many cases where the introduction is postponed because there is no financial margin. This is one of the reasons why the penetration rate of solar power generation in ordinary houses has not increased.

Therefore, in order to eliminate the financial burden of purchasing the photovoltaic power generation equipment of the owner of a general house, conventionally, as disclosed in Patent Document 1 below, the electric power company has set the installation location of the photovoltaic power generation equipment. Borrowed from the owner of a general house, installed a solar power generation facility at the installation location, rented the solar power generation facility to the owner of the general house, distributed the power generated by the solar power generation facility, and said above. We asked a third party to invest in the installation of a photovoltaic power generation facility, such as a photovoltaic power generation system that settles the rent of the installation location of the photovoltaic power generation facility and the electricity charge consumed at that location. A photovoltaic power generation system has also been proposed in which the dividend for the investment in the photovoltaic power generation facility and the electricity charge consumed at the place are settled.

JP-A-2002-281668

However, the installation location of the solar power generation equipment is rented from the owner of the general house to install the solar power generation equipment, and the solar power generation equipment is lent to the owner of the general house, and the power is generated by the solar power generation equipment. When the power is distributed and the rent of the installation location of the solar power generation equipment and the electricity charge consumed at that location are settled, the owner of the general house that rents the installation location of the solar power generation equipment. In the future, it will not be possible to own its own solar power generation equipment, and it cannot be expected that the payment of electricity charges will be significantly reduced by using the power generated by its own solar power generation equipment. And the use of the installation location of the solar power generation equipment is also bound by the contract.

In addition, as long as the photovoltaic power generation equipment is installed at the installation location rented by the electric power company, the amount of power generated by the photovoltaic power generation equipment is managed, and dividends are paid to the investors in the photovoltaic power generation equipment. We must continue to manage electricity charges for generated power. Therefore, these management tasks will continuously impose a burden on the electric power company.

The present invention has been made in view of such conventional problems. A main object of the present invention is that a consumer who owns a general house or the like can install and use photovoltaic power generation equipment such as photovoltaic power generation on the roof or the like of his / her home without incurring the financial burden of purchasing the equipment. The purpose is to provide a photovoltaic power generation system that can reduce the burden of management work of the photovoltaic power generation company related to the photovoltaic power generation equipment.

Means for Solving Problems and Effects of Invention

According to the photovoltaic power generation system according to the first aspect of the present invention, a lead-in electric line connecting a distribution line of transmitted power and a distribution board provided on a site owned by a customer and a lead-in line installed in the site. The amount of lead-in power, which is the amount of power of the photovoltaic power generation facility using solar energy, the power generation side electric circuit connecting the solar power generation facility and the distribution board, and the lead-in power supplied to the distribution board through the lead-in line. And, the reverse power flow power amount, which is the surplus power amount of the generated power generated by the photovoltaic power generation facility, which is supplied to the distribution line through the lead-in line, can be measured. The service is provided with a means for measuring the amount of power at the service port, the power retailer purchases the power from a power wholesaler and sells it to the customer, and the power wholesaler purchases the backflow power from the power wholesaler and the power wholesaler owns the photovoltaic power generation facility. It is a photovoltaic power generation system that is purchased directly or indirectly from the photovoltaic power generation facility, and the photovoltaic power generation equipment is owned by the investor, and the photovoltaic power retailer obtains the photovoltaic power generation from the customer at predetermined intervals. In addition to collecting the electricity usage fee, the owner of the photovoltaic power generation facility will be paid a dividend fee, and the investor's predetermined period consisting of the reverse current power sale fee and the dividend fee for each predetermined period. A target for storing the set value of the target amount set on the premise that the ownership of the photovoltaic power generation facility is transferred from the investor to the customer when the accumulated amount of income for each reaches the target amount. The amount of generated power measured for each predetermined period by the forehead setting unit and the generated power measuring means provided in the power generation side electric circuit, and the amount of reverse power flow measured for each predetermined period by the inlet power amount measuring means. In addition, the metered value input unit that stores each input value of the drawn-in power amount measured for each predetermined period, and the unit price of the drawn-in power, the unit price of the reverse power flow, the selling unit price of the generated power, and the dividend unit price of the generated power are changed respectively. A power unit price setting unit that can be set as possible and stores each set value of the unit price of the lead-in power, the unit price of the reverse power flow power, the sales unit price of the generated power, and the distribution unit price of the generated power, and the measurement value input unit. Based on the amount of generated power and the amount of reverse power flow stored in, the consumption amount calculation unit of the generated power and the power unit price setting unit that calculate and store the consumption amount through the distribution panel among the power amount of the generated power and the power unit price setting unit. By multiplying the unit price of the reverse power flow stored in the above and the amount of the reverse power flow stored in the measurement value input unit, the power sale charge of the reverse power flow is calculated and stored, and the measurement unit. The stored value of the drawn power amount stored in the value input unit and stored in the power unit price setting unit. The drawn-in electricity charge calculation unit that calculates and stores the drawn-in electricity charge based on the unit price of the drawn-in power, and the consumption consumed through the distribution board of the generated power amount stored in the generated power consumption amount calculation unit. The generated power consumption charge calculation unit that calculates and stores the generated power consumption charge for the consumption of the generated power amount by multiplying the minute by the selling unit price of the generated power stored in the power unit price setting unit, and the drawn power The collection charge calculation unit that calculates the collection charge by adding the storage value of the generated power consumption charge to the stored value of the charge, the distribution unit price of the generated power stored in the power unit price setting unit, and the consumption amount of the generated power. The dividend amount calculation unit, which calculates and stores the dividend amount by multiplying the consumption amount stored in the calculation unit, and the income accumulation amount, which is the sum of the income of the investor for each predetermined period up to the previous calculation date, are calculated. The storage value of the accumulated income amount to be stored, the stored value of the dividend charge of the dividend amount calculation unit, the stored value of the electricity selling charge of the power selling charge calculation unit, and the stored value of the accumulated income amount of the accumulated income amount storage unit. Based on the above, the income accumulation amount calculation unit that calculates and stores the income accumulation amount up to this time, the storage value of the income accumulation amount of the income accumulation amount calculation unit, and the storage value of the target amount of the target amount setting unit. By comparison, when the accumulated income amount exceeds the target amount, it is determined that the ownership can be transferred, and the determination unit that stores the determination result and the accumulated income amount stored in the accumulated income amount calculation unit up to this time, The generated power consumption charge stored in the generated power consumption charge calculation unit, the drawn-in electricity charge stored in the drawn-in electricity charge calculation unit, the collected charge stored in the collected charge calculation unit, and the dividend amount calculation unit. Outputs the dividend amount stored by Can be configured to include an output control unit that commands the output device.

According to the above configuration, the determination unit compares the target value set in the target amount setting unit with the integrated amount of the investor's income stored in the income integrated amount calculation unit, and the integrated amount of the investor's income. Outputs the detection information that the ownership can be transferred when the value exceeds the target value, so it is accurate that the accumulated amount of the investor's income has reached the predetermined target amount for transferring the solar power generation equipment. Can be detected. As a result, the ownership of the photovoltaic power generation equipment can be transferred from the investor to the customer at an appropriate time, and the photovoltaic power generation equipment is owned by the consumer, so the power generated by the photovoltaic power generation equipment is free of charge. When the consumer consumes electricity and sells electricity, the consumer can receive the consideration. Moreover, after the ownership of the solar power generation equipment is transferred to the customer, the electric power retailer does not need to grasp the amount of power generated by the solar power generation equipment, and the power outlet power quantity measuring means is used as in the past. Since the electricity charge may be calculated based on the measured electric energy of the power consumption and the electric energy of the reverse power flow and billed to the consumer, the burden on the electricity charge management work is reduced. Further, since the consumption amount consumed through the distribution board is calculated out of the generated power amount, it is not necessary to install a watt hour meter to measure the consumption amount, and the power generation system can be simplified.

Further, according to the above configuration, since it is possible to output the consumption charge of the generated power, it is convenient when charging or collecting the electricity charge from the consumer.

Furthermore, according to the above configuration, it is possible to output the drawn-in electricity charge, which is convenient when billing or collecting the electricity charge from the consumer.

Furthermore, according to the above configuration, when billing or collecting electricity charges, it is not necessary to add the drawn-in electricity charges and the generated power consumption charges in order to calculate the amount to be charged to the consumer. It's convenient.

According to the above configuration, each set value of the unit price of the backflow electric power and the dividend unit price of the generated electric power can be changed in various ways, so that it is possible to flexibly deal with various contracts with, for example, an electric power wholesaler and an investor.

Furthermore, according to the above configuration, since the set value of the sales unit price of the generated power can be variously changed, it is possible to flexibly deal with various contracts with the consumer regarding the generated power consumption charge.

Furthermore, according to the above configuration, since the set value of the unit price of the drawn power can be changed in various ways, it is possible to flexibly deal with various contracts with the consumer according to the fluctuation of the unit price of the wholesale power, for example.

According to the photovoltaic power generation system according to the second aspect of the present invention, the power selling charge calculation unit is replaced with a power selling charge input unit that stores the already calculated input value of the power selling charge, and the already calculated pull-in is performed. It can be configured to include a lead-in electricity rate input unit that stores an input value of the electricity rate.

The electricity rate management device for a power generation system according to a third aspect of the present invention is a substitute for the power retailer of a power generation system in which the power wholesaler sells electricity to the consumer on behalf of the power retailer. In addition, it may be used as an electricity charge management device for a power generation system in which the electricity wholesaler sells electricity to the consumer.

It is a block diagram which shows an example of the power generation system to which this invention is applied. It is the schematic explanatory drawing of the hardware of the electricity rate management apparatus of the power generation system which concerns on one Example of this invention. It is a block diagram for demonstrating the functional structure of the electricity rate management apparatus of the power generation system which concerns on one Example of this invention. It is a block diagram for demonstrating another embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiments shown below exemplify the electricity rate management device of the power generation system for embodying the technical idea of the present invention, and the present invention does not specify them as the following. Further, the present specification does not specify the members shown in the claims as the members of the embodiment. In particular, the dimensions, materials, shapes, relative arrangements, etc. of the components described in the embodiments are not intended to limit the scope of the present invention to the specific description, but are merely described. It's just an example. The size and positional relationship of the members shown in each drawing may be exaggerated to clarify the explanation. Further, in the following description, members having the same or the same quality are shown with the same name and reference numeral, and detailed description thereof will be omitted as appropriate. Further, each element constituting the present invention may be configured such that a plurality of elements are composed of the same member and the plurality of elements are combined with one member, or conversely, the function of one member is performed by the plurality of members. It can also be shared and realized.
(Power generation system)

As shown in FIG. 1, the power generation system 2 to which the electricity rate management device 1 of the power generation system according to the embodiment of the present invention is applied is a distribution board 3 for transmission power and a distribution board provided on a site owned by a customer. A lead-in electric line 5 connecting the 4 and a photovoltaic power generation facility 6 using solar energy installed in the site where the distribution board 4 is provided, and power generation connecting the photovoltaic power generation facility 6 and the distribution board 4 A side electric circuit 7 and a service port electric energy measuring means 8 provided in the service line 5 are provided.

In this embodiment, the photovoltaic power generation facility 6 includes a photovoltaic power generation panel 9 that generates electricity using sunlight. The photovoltaic power generation panel 9 is mounted on a sunny roof or the like of a building on a customer's site, and receives sunlight to generate DC power. The generated DC power is supplied to the power conditioner 11 via the junction box 10, and is converted into commercial AC power by the power conditioner 11. Then, this AC power is output as generated power from the photovoltaic power generation facility 6 via the switch 12.

The generated power output from the photovoltaic power generation facility 6 is supplied to the distribution board 4 through the power generation side electric circuit 7, and is supplied from the distribution board 4 to the load on the customer's premises. When the power generated by the photovoltaic power generation facility 6 is smaller than the power consumption of the load connected to the distribution board 4, the power transmitted from the distribution line 3 is supplied to the distribution board 4 through the lead-in line 5, resulting in insufficient power generation. Make up for the minute. On the contrary, when the load connected to the distribution board 4 is smaller than the generated power, the surplus of the generated power becomes reverse power flow power and is supplied to the distribution line 3 through the lead-in electric circuit 5.

The service port electric energy measuring means 8 includes a watt-hour meter having a bidirectional measuring function or two watt-hour meters having a unidirectional measuring function arranged in opposite directions to the distribution board 4 through the service line 5. The amount of lead-in electric energy, which is the amount of electric energy to be supplied, and the amount of backflow electric energy flowing back from the power generation system 2 to the distribution board 3 can be measured.

In this power generation system 2, the transmitted power supplied from the distribution line 3 is purchased by the power retailer from the power wholesaler and sold to the consumer, and the reverse power flow is owned by the power wholesaler in the solar power generation facility 6. Purchase directly or indirectly from a person. According to the present invention, the electric power wholesaler may be a person who sells the generated electric power and purchases the reverse power flow electric power, and is not limited to an organization such as a general electric power company. In addition, there may be cases where the power wholesaler who directly purchases reverse power from the consumer and the power wholesaler who sells the wholesale power directly to the power retailer are not the same.

The distribution line 3 is connected to a large number of power generation systems 2. The electric power wholesaler has a distribution management server 13 in this embodiment in order to grasp and manage the electric energy of the lead-in electric power and the electric energy of the reverse power flow for each consumer. Then, the inlet power amount measuring means 8 measures the amount of drawn power and the amount of reverse power flow power during the predetermined period, for example, every month, and includes the measured values and the property number. The power distribution data for each consumer is input to the power distribution management server 13 and stored. Further, in order to save labor in meter reading work, the inlet electric energy measuring means 8 is composed of an electric energy meter having a communication function such as a smart meter, and is connected to the distribution management server 13 by a communication line 14 to draw in. Each measured value of electric energy and reverse power flow can be transmitted to the distribution management server 13 through the communication line 14.

The power generation side electric circuit 7 is provided with a power generation power measuring means 15 capable of measuring the amount of power generated, which is the amount of power generated by the photovoltaic power generation facility 6. In this embodiment, the generated power measuring means 15 is composed of a watt hour meter having a communication function, and is connected to the power generation management server 16 by a communication line 17. The power generation management server 16 is owned by a power generation status manager who manages the power generation status of the photovoltaic power generation facility, and the power generation status manager uses the generated power measuring means 15 to generate power at regular intervals during that period. The amount is measured, and the power generation data for each photovoltaic power generation facility including the measured value and the property number is input to the power generation management server 16 and stored.

The power generation data and distribution data include data necessary for management, such as the measurement date (meter reading date), in addition to the measured value of electric energy and the property number. In addition, the distribution data and the property numbers of the power generation data related to the same power generation system 2 are given the same numbers so as not to be confused with other power generation systems.

The photovoltaic power generation facility 6 is owned by the investor, and the electric power retailer collects the usage fee of the generated power from the consumer and the general electricity fee based on the drawn power from the distribution line at predetermined intervals. At the same time, the dividend amount is paid to the investor who is the owner of the photovoltaic power generation facility 6. In the case of this embodiment, since the electric power retailer acquires and constructs the solar power generation equipment 6 and then sells it to the power generation status manager, the investor is the power generation status manager and the solar power generation. The owner of the power generation facility 6 is also a power generation status manager.

In this power generation system 2, the measurement days by the inlet electric energy measuring means 8 and the generated power measuring means 15 are determined as the number of days of each month. The weighing dates for both do not have to be the same. The electricity rate calculation date is set by the electricity rate management device 1 to a predetermined date several days after the measurement date by both parties. In addition, a few days after the calculation date, the electricity bill is charged to the consumer, the electricity retailer collects the electricity bill from the consumer, reports it to the investor the following month, and a few days later, the electricity selling fee is sent to the investor. Will be paid.

In the power generation system 2 to which the present invention is applied, before installing the power generation system 2, the target is the total income of the investor consisting of the power sales fee and the dividend amount, which are the sales fees of reverse power flow to the power wholesaler. When the amount is reached, a contract is signed between the electric power retailer, the consumer and the investor on the premise that the photovoltaic power generation facility 6 is transferred to the consumer. The electricity rate management device of the present invention can also be applied to a power generation system in which an electricity wholesaler sells electricity to consumers instead of an electricity retailer.
(Electricity rate management device)

As shown in FIG. 2, the electricity rate management device 1 is configured by using a computer including a central processing unit 18, a storage device 19, an input device 20, and an output device 21. The computer includes a communication control device 22, and the communication control device 22 can timely send and receive data to and from the power distribution management server 13 and the power generation management server 16 through the communication lines 23 and 24. A program for electricity charge management is stored in the storage device 19, and each unit that performs the processing function of the electricity charge management device 1 in the computer 21 is stored in the computer 21 by the program, the storage device 19, and the central processing unit 18. It is configured.

The storage device 19 includes an auxiliary storage device 25 such as a hard disk that can retain storage even when the power is turned off, and the auxiliary storage device 25 stores a storage unit for storing power charge management data. Have.

The electricity charge management data includes the property number assigned to each power generation system 2, the customer name, the investor name, the measurement date by the inlet electric energy measuring means 8 for each property number, the intake electric energy for each measurement day, and the reverse current power. Amount, measurement date by the generated power measurement means 15, amount of power generated for each measurement day, calculation date of electricity charge for each predetermined period, power generation consumption charge for each calculation day, dividend amount to investors, electricity charge drawn in, sale It includes electricity charges, collection charges, accumulated income, transferability detection information, etc. The accumulated income amount is the sum of the electricity sales charge and the dividend amount for each measurement day, and is the integrated amount of the investor's income related to the photovoltaic power generation facility 6.

In the storage unit of the power charge management data of the auxiliary storage device 25, in this embodiment, based on the power distribution data from the power distribution management server and the power generation data from the power generation management server, the amount of power drawn in, the amount of reverse power flow, the amount of power generated, etc. Data is entered for each weighing date. The power charge management data may be input to the auxiliary storage device 25 by manual operation of the input device 20 or the like via a storage medium that stores the power distribution data or the power generation data. Further, the power charge management data stored in the auxiliary storage device 25 can be output from the output device 21 as a display on the display screen or as a printed matter from the printer at any time by operating the input device 20. There is.

Electricity charges for data such as generated electricity consumption charges for each calculation day, dividend amount to investors, electricity charges drawn in, electricity sales charges, collection charges, accumulated income amount, transferability detection information, etc. in the electricity charge management data Based on the processing result of the management device 1, the data is automatically written to the storage unit of the electricity charge management data of the auxiliary storage device 25.

As shown in FIG. 3, the electricity rate management device 1 includes a target amount setting unit 31, a power unit price setting unit 32, a measurement value input unit 33, an income integrated amount storage unit 34, a power generation consumption calculation unit 35, and a power generation power generation unit. It includes a consumption charge calculation unit 36, a dividend amount calculation unit 37, a power sales charge calculation unit 37, a lead-in electricity charge calculation unit 38, a collection charge calculation unit 40, an income accumulation amount calculation unit 41, a judgment unit 42, and an output control unit 43. There is.

The target amount setting unit 31 stores the total income of the investor, that is, the target amount of the accumulated income amount. This target amount is set on the premise that the photovoltaic power generation facility 6 will be transferred to the consumer when the total income of the investor including the power sale fee and the dividend amount reaches the target amount. Further, this target amount is stored in the auxiliary storage device 25, and is input to the target amount setting unit 31 when the processing is started. Further, the target amount can be changed by operating the input device 20.

The electric power unit price setting unit 32 stores the unit price of the electric energy per unit electric energy. In this embodiment, the unit price of reverse power flow, which is the selling price per unit reverse power flow amount, the unit price of the lead-in power, which is the electricity charge per unit lead-in power amount, and the electricity charge, which is the electricity charge per unit power generation amount, of the generated power. The sales unit price and the distribution unit price of the generated power, which is the distribution amount per unit power generation amount, are stored in the individual setting units 32a, 32b, 32c, and 32d. Each unit price is stored in the auxiliary storage device 25, and is input from the auxiliary storage device 25 when the processing is started. Further, each unit price can be changed by operating the input device 20.

The measured value input unit 33 includes an input unit 33a for the amount of power generation, an input unit 33b for reverse power flow power, and an input unit 33c for the amount of power drawn in, and the amount of power generated for each predetermined period by the power generation measurement means 15. The measured value, the amount of power drawn in by the suction port electric energy measuring means 8 for each predetermined period, and the amount of reverse power flow are stored. In this embodiment, these measurement values are called from the data having the same property number and the latest measurement date in the electricity rate management data of the auxiliary storage device 25. However, the measurement value may be input to the measurement value input unit 33, if necessary, by operating the input device 20 via, for example, the data recorded on the storage medium.

The income accumulation amount storage unit 34 is provided in the auxiliary storage device 25, and stores the previous income accumulation amount calculated by the service-in electricity charge calculation unit 38. The previous income accumulation amount is the income accumulation amount included in the electricity charge management data stored in the auxiliary storage device 25, which has the same property number and the calibration date coincides with the previous calibration date.

The power generation consumption calculation unit 35 calculates the power consumption of the generated power through the distribution board 4 based on the stored value of the generated power amount and the storage value of the reverse power flow power amount of the measurement value input unit 33. Calculate and memorize. This consumption is calculated by subtracting the reverse power flow power from the generated power.

The generated power consumption charge calculation unit 36 calculates and stores the generated power consumption charge based on the stored value of the consumption amount of the generated power consumption portion calculation unit 35. The generated power consumption charge is calculated by multiplying the sales unit price of the generated power stored in the sales unit price setting unit 32c of the generated power by the consumption amount.

The dividend amount calculation unit 37 calculates and stores the dividend amount based on the stored value of the consumption amount of the consumption amount calculation unit 35. This dividend amount is calculated by multiplying the dividend unit price of the generated power stored in the setting unit 32d of the power unit price setting unit 32 by the consumption amount.

The lead-in electricity charge calculation unit 38 calculates and stores the draw-in electricity charge based on the stored value of the draw-in electric energy of the input unit 33c of the measurement value input unit 33. This attraction charge electricity is calculated by multiplying the unit price of the attraction power stored in the setting unit 32b of the power unit price setting unit 32 by the amount of the attraction power.

The power selling charge calculation unit 39 calculates and stores the power selling charge based on the stored value of the reverse power flow electric energy of the input unit 33b of the measurement value input unit 33. This power selling charge is calculated by multiplying the unit price of reverse power flow power stored in the setting unit 32a of the power unit price setting unit 32 and the amount of reverse power flow power.

The collection charge calculation unit 40 calculates the collection charge to be collected from the consumer based on the stored value of the generated power charge of the generated power consumption charge calculation unit 36 and the stored value of the drawn electricity charge of the drawn-in electricity charge calculation unit 38. And remember. This collection fee is calculated by adding the lead-in electricity fee to the generated power fee.

The income accumulation amount calculation unit 41 includes the storage value of the power selling charge of the reverse power flow power of the power sales charge calculation unit 39, the storage value of the dividend amount of the dividend amount calculation unit 37, and the previous income of the income accumulation amount storage unit 34. Based on the stored value of the accumulated amount, the investor's accumulated income amount is calculated and stored. The accumulated income amount is calculated by adding the dividend amount and the electricity selling fee to calculate the income amount for each predetermined period, and adding the income amount for each predetermined period to the previous accumulated income amount.

The determination unit 42 compares the target amount stored in the target amount setting unit 31 with the stored value of the income accumulation amount of the income accumulation amount calculation unit 41, and if the income accumulation amount is equal to or more than the target amount, the ownership is transferred. Judge that it is possible and memorize the judgment result.

Based on the stored value of the determination result of the determination unit 42, the output control unit 43 commands the output device 21 to output the detection information that the ownership can be transferred when the determination result is transferable. In the case of this embodiment, the detection information is displayed on the display device of the output device 21, for example, "ownership transfer possible" or "target amount achieved".

Further, the output control unit 43 stores the calculated and stored power generation power consumption charge, dividend amount, lead-in electricity charge, power sale charge, collection charge, income accumulation amount, and detection information of whether or not ownership can be transferred in the auxiliary storage device 25. It is possible to write to each storage unit of.
(Operation of electricity charge calculation process)

In advance, the input device 20 is operated to activate the electricity rate management device 1, and the target amount of the accumulated income amount is first set in the target amount setting unit 31. Further, each electric power unit price is set in the electric power unit price setting unit 32. After that, when necessary, input the power charge management data such as the generated power amount, the reverse power flow power amount, and the drawn power amount, and start the calculation process of the electricity charge, the electricity charge stored in the auxiliary storage device 25. Required data is selected from the management data, and the data is stored in the measurement value input unit 33.

Next, the power generation consumption calculation unit 35 and the dividend amount calculation unit 37 calculate the dividend charge based on the power generation amount and the reverse power flow power amount stored in the measurement value input unit 33, and the power sale charge calculation unit. 39 operates to calculate the power sales charge, and the income accumulation amount calculation unit 41 calculates the income accumulation amount based on the calculated dividend charge, the power sale charge, and the stored value of the income accumulation amount storage unit 34. At the same time, the drawn-in electricity charge calculation unit 38 calculates the drawn-in electricity charge based on the amount of drawn-in power stored in the measured value input unit 33, and the generated power consumption charge calculation unit 36 is stored in the measured value input unit 33. The generated power consumption charge is calculated based on the generated power amount and the reverse power flow power amount, and the collection charge calculation unit 40 calculates the collection charge based on the calculated drawn-in electricity charge and the generated power consumption charge.

Next, the determination unit 42 compares the target amount stored in the target amount setting unit 31 with the calculated income accumulation amount, and determines whether or not the income accumulation amount has reached the target amount.

Next, based on the determination result of the determination unit 42, the output control unit 43 commands the output device 21 to output the detection information that the ownership can be transferred, and outputs the determination result when the determination result is transferable. The device 21 outputs the detection information that the ownership can be transferred.

Further, the output control unit 43 outputs the calculated and stored generated power consumption charge, the drawn-in electricity charge, the collection charge, the power sale charge, the dividend amount, the accumulated income amount, and the calculation date to the auxiliary storage device 25, and outputs the calculated and stored power to the auxiliary storage device 25. Of the electricity rate management data stored in the device 25, the one with the same property number and the latest measurement date is selected, and the output generated power consumption charge and pull-in in the selected electricity rate management data. The electricity charge, the collection charge, the electricity sale charge, the dividend amount, the accumulated income amount, the calculation date, etc. are written in the storage unit of the auxiliary storage device 25, and the calculation process of the electricity charge is completed.

When the detection information that the ownership can be transferred is output from the electricity rate management device 1, the electricity retailer transfers the ownership of the photovoltaic power generation facility 6 from the investor to the consumer to the consumer, the investor, and the electricity wholesaler. Notify that you have moved. Then, the electric power company changes the payment target of the electricity selling fee to the consumer.
(Another example of an electricity rate management device)

The electricity charge management device shown in FIG. 4 adds to the distribution data sent from the distribution management server of the electric power company, in addition to the drawn-in electricity amount for each predetermined period, the drawn-in electricity charge, and the reverse power flow electric energy for each predetermined period. It is applied when the electricity sales fee is included. This electricity charge management device removes the unit price setting unit 32b of the drawn power, the input unit 33c of the drawn power amount, and the drawn electricity charge calculation unit 38 in the electricity charge management device shown in FIG. 3, and instead, as shown in FIG. In addition to being provided with a lead-in electricity charge input unit 44 for inputting and storing a lead-in electricity charge, a unit price setting unit 32a for reverse power flow in the electricity charge management device shown in FIG. The electricity charge calculation unit 39 is removed, and instead, as shown in FIG. 4, a power sale charge input unit 45 for inputting and storing the electricity sales charge is provided. In other words, this electricity rate management device inputs the measured lead-in electricity amount, and instead of calculating the lead-in electricity rate based on the draw-in electric energy, inputs the already-calculated lead-in electricity rate and uses the input lead-in electricity rate as well. Instead of using the generated power consumption charge to calculate the collection charge, input the measured reverse power flow amount, and calculate the power sale electricity charge based on the reverse power flow power amount, enter the already calculated power sale electricity charge. , The input electricity selling fee is used to calculate the accumulated income amount.

In the electricity rate management device of the power generation system of the present invention, a consumer who owns a general house or the like installs a photovoltaic power generation facility such as photovoltaic power generation on the roof or the like of his / her home without incurring the financial burden of purchasing the facility. It can be used and can be applied to reduce the burden of management work of electric power companies related to photovoltaic power generation equipment.

1 ... Electric power charge management device 2 ... Power generation system 3 ... Distribution line 4 ... Distribution board 5 ... Drop-in line 6 ... Solar power generation equipment 7 ... Power generation side electric line 8 ... Inlet power amount measuring means 9 ... Solar power generation panel 10 ... Connection box 11 ... Power conditioner 12 ... Switch 13 ... Power distribution management server 14 ... Communication line 15 ... Power generation power measurement means 16 ... Power generation management server 17 ... Communication line 18 ... Central arithmetic processing device 19 ... Storage device 20 ... Input device 21 ... Output device 22 ... Communication control device 23 ... Communication line 24 ... Communication line 25 ... Auxiliary storage unit 31 ... Target amount setting unit 32 ... Electricity unit price setting unit 33 ... Measured value input unit 34 ... Income integrated amount storage unit 35 ... Power generation Consumption amount calculation unit 36 ... Power generation power consumption charge calculation unit 37 ... Dividend amount calculation unit 38 ... Electricity charge calculation unit 39 ... Electricity sales charge calculation unit 40 ... Collection charge calculation unit 41 ... Income accumulation amount calculation unit 42 ... Judgment unit 43 ... Output control unit 44 ... Retracted electricity charge input unit 45 ... Power sales charge input unit

Claims (3)

A service line that connects the distribution line of the transmitted power and the distribution board installed on the site owned by the customer,
Solar power generation equipment using solar energy installed on the premises
A power generation side electric circuit connecting the solar power generation facility and the distribution board,
The amount of lead-in power, which is the amount of lead-in power supplied to the distribution board through the lead-in line, and the surplus of the generated power generated by the solar power generation facility, which is supplied to the distribution line through the lead-in line. It is provided with a service port electric energy measuring means provided in the service line, which can measure the amount of reverse power flow electric energy, which is the amount of electric power.
The electricity drawn in is purchased by an electric power retailer from an electric power wholesaler and sold to the customer.
The reverse power flow power is a photovoltaic power generation system that the power wholesaler has decided to purchase directly or indirectly from the owner of the photovoltaic power generation facility.
The solar power generation equipment is owned by the investor
Every predetermined period, the electric power retailer collects the usage fee of the generated electric power from the consumer and pays the dividend fee to the owner of the solar power generation facility.
When the integrated amount of income for each predetermined period of the investor, which consists of the power sale charge of the reverse power flow power for each predetermined period and the dividend charge, reaches the target amount, the investor takes ownership of the photovoltaic power generation facility. A target amount setting unit that stores the set value of the target amount set on the premise of transferring to the customer from
The generated power amount measured for each predetermined period by the generated power measuring means provided in the power generation side electric circuit, the reverse power flow power amount measured for each predetermined period by the inlet power amount measuring means, and each predetermined period. A measured value input unit that stores each input value of the measured drawn electric energy, and a measured value input unit.
The unit price of the lead-in power, the unit price of the reverse power flow, the unit price of the generated power, and the unit price of the dividend of the generated power can be set to be changeable, and the unit price of the lead-in power, the unit price of the reverse power flow, and the sale of the generated power can be changed. A power unit price setting unit that stores each set value of the unit price and the distribution unit price of generated power,
Based on the power generation amount and the reverse power flow power amount stored in the measurement value input unit, the power generation amount calculation unit for calculating and storing the power generation amount through the distribution board among the power generation amount, and the power generation amount calculation unit for storing.
Calculation of power selling charge for calculating and storing reverse power flow power by multiplying the unit price of reverse power flow stored in the power unit price setting unit and the amount of reverse power flow power stored in the measured value input unit. Department and
A lead-in electricity charge calculation unit that calculates and stores the draw-in electricity charge based on the stored value of the drawn-in power amount stored in the measured value input unit and the unit price of the drawn-in power stored in the power unit price setting unit.
By multiplying the consumption amount of the generated power amount stored in the power generation amount calculation unit, which is consumed through the distribution panel, and the selling unit price of the generated power stored in the power unit price setting unit, the said The generated power consumption charge calculation unit that calculates and stores the generated power consumption charge for the consumption of the generated power amount,
A collection charge calculation unit that calculates the collection charge by adding the storage value of the generated power consumption charge to the storage value of the drawn power charge.
A dividend amount calculation unit that calculates and stores the dividend amount by multiplying the dividend unit price of the generated power stored in the power unit price setting unit and the consumption amount stored in the consumption amount calculation unit of the generated power.
An income accumulation amount storage unit that stores an income accumulation amount that integrates the income of the investor for each predetermined period up to the previous calculation date, and an income accumulation amount storage unit.
Income accumulation up to this time based on the stored value of the dividend charge of the dividend amount calculation unit, the stored value of the power selling charge of the power selling charge calculation unit, and the stored value of the income integrated amount of the income integrated amount storage unit. The income accumulation amount calculation unit that calculates and stores the amount,
By comparing the stored value of the accumulated income amount of the income accumulated amount calculation unit with the stored value of the target amount of the target amount setting unit, it is determined that the ownership can be transferred when the accumulated income amount exceeds the target amount. , A judgment unit that stores the judgment result,
The accumulated income amount stored in the income integrated amount calculation unit up to this time, the generated power consumption charge stored in the generated power consumption charge calculation unit, the drawn-in electricity charge stored in the drawn-in electricity charge calculation unit, and the collected amount. The collection fee stored in the charge calculation unit and the dividend amount stored in the dividend amount calculation unit are output to the income integrated amount storage unit, and the determination result stored in the determination unit can transfer ownership. When the result is, the output control unit that commands the output device to output the detection information that the ownership can be transferred, and
A photovoltaic power generation system characterized by being equipped with. A service line that connects the distribution line of the transmitted power and the distribution board installed on the site owned by the customer,
Solar power generation equipment using solar energy installed on the premises
A power generation side electric circuit connecting the solar power generation facility and the distribution board,
The amount of lead-in power, which is the amount of lead-in power supplied to the distribution board through the lead-in line, and the surplus of the generated power generated by the solar power generation facility, which is supplied to the distribution line through the lead-in line. It is provided with a service port electric energy measuring means provided in the service line, which can measure the amount of reverse power flow electric energy, which is the amount of electric power.
The electricity drawn in is purchased by an electric power retailer from an electric power wholesaler and sold to the customer.
The reverse power flow power is a photovoltaic power generation system that the power wholesaler has decided to purchase directly or indirectly from the owner of the photovoltaic power generation facility.
The solar power generation equipment is owned by the investor
Every predetermined period, the electric power retailer collects the usage fee of the generated electric power from the consumer and pays the dividend fee to the owner of the solar power generation facility.
When the integrated amount of income for each predetermined period of the investor, which consists of the power sale charge of the reverse power flow power for each predetermined period and the dividend charge, reaches the target amount, the investor takes ownership of the photovoltaic power generation facility. A target amount setting unit that stores the set value of the target amount set on the premise of transferring to the customer from
Each input value of the generated power amount measured for each predetermined period by the generated power measuring means provided in the power generation side electric circuit and the reverse power flow power amount measured for each predetermined period by the inlet power amount measuring means. Weighing value input unit to be stored and
A power unit price setting unit that can set the sales unit price of the generated power and the distribution unit price of the generated power in a changeable manner, and stores the set values of the sales unit price of the generated power and the distribution unit price of the generated power, and the power unit price setting unit.
Based on the power generation amount and the reverse power flow power amount stored in the measurement value input unit, the power generation amount calculation unit for calculating and storing the power generation amount through the distribution board among the power generation amount, and the power generation amount calculation unit for storing.
A power selling charge input unit for inputting and storing a pre-calculated reverse power flow power selling charge, and a pull-in electricity charge input unit for inputting and storing the pre-calculated drawn-in electricity charge.
By multiplying the consumption amount of the generated power amount stored in the power generation amount calculation unit, which is consumed through the distribution panel, and the selling unit price of the generated power stored in the power unit price setting unit, the said The generated power consumption charge calculation unit that calculates and stores the generated power consumption charge for the consumption of the generated power amount,
A collection charge calculation unit that calculates the collection charge by adding the storage value of the generated power consumption charge to the storage value of the drawn power charge.
A dividend amount calculation unit that calculates and stores the dividend amount by multiplying the dividend unit price of the generated power stored in the power unit price setting unit and the consumption amount stored in the consumption amount calculation unit of the generated power.
An income accumulation amount storage unit that stores an income accumulation amount that integrates the income of the investor for each predetermined period up to the previous calculation date, and an income accumulation amount storage unit.
Income accumulation up to this time based on the stored value of the dividend charge of the dividend amount calculation unit, the stored value of the power selling charge of the power selling charge input unit, and the stored value of the income accumulated amount of the income integrated amount storage unit. The income accumulation amount calculation unit that calculates and stores the amount,
By comparing the stored value of the accumulated income amount of the income accumulated amount calculation unit with the stored value of the target amount of the target amount setting unit, it is determined that the ownership can be transferred when the accumulated income amount exceeds the target amount. , A judgment unit that stores the judgment result,
The accumulated income amount stored in the income integrated amount calculation unit, the generated power consumption charge stored in the generated power consumption charge calculation unit, the drawn-in electricity charge stored in the drawn-in electricity charge setting unit, and the collected amount. The collection fee stored in the charge calculation unit and the dividend amount stored in the dividend amount calculation unit are output to the income integrated amount storage unit, and the determination result stored in the determination unit can transfer ownership. When the result is, the output control unit that commands the output device to output the detection information that the ownership can be transferred, and
A photovoltaic power generation system characterized by being equipped with. In the photovoltaic power generation system according to claim 1 or 2.
A photovoltaic power generation system in which the electric power wholesaler sells electric power to the consumer on behalf of the electric power retailer.

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