JP2019159350A - Electricity charge management apparatus for power generation system - Google Patents

Abstract

To enable a user who owns a general house to install and use a natural energy power generation facility such as sunlight power generation without incurring an economic burden of purchasing the facility and to reduce a burden of management work for power supplier on the power supply facility.SOLUTION: A power generation facility 6 owed by an investor is installed on a customer premise, an electricity retailer collects a usage fee for generated power and a drawn-in electricity fee for a drawn-in power form the customer every determined period, and consumer consumption of generated power and selling power of reverse power flow to a power wholesaler are paid to the investor. A target amount of an accumulated income for the investor by the payment is set, the accumulated income for the investor is calculated by an electricity charge management apparatus based on the calculated reverse power flow and the generated power amount every predetermined period, and detection information that an ownership of the power generation facility 6 can be transferred from the investor to the customer when the accumulated income arrives at the set target amount.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an electricity rate management device for a power generation system that generates power using, for example, a solar panel installed in a general house.

  In recent years, it has become possible for not only electric power companies that perform conventional power generation and distribution, but also electric power retailers to sell electric power to ordinary homes. As an electric power company, this electric power retailer purchases wholesale electric power from an electric power company and conducts a business of selling the wholesale electric power to consumers. Recently, he has also been involved in the business of solar power generation systems.

  Photovoltaic power generation is a power generation system that directly converts sunlight into electric power using solar cells, and is useful for reducing greenhouse gas emissions such as carbon dioxide and suppressing the deterioration of the global environment. is there. For this reason, a renewable energy feed-in tariff system has been established to promote the spread of solar power generation. Currently, the penetration rate of solar 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 there is a lot of sunny space. If you have to purchase photovoltaic power generation facilities and want to introduce solar power when building a new house, you may want to give up the installation due to budgetary reasons, or install solar panels on the roof of an existing house. There are many cases where the introduction is postponed because there is no financial allowance. This is one of the reasons why the penetration rate of photovoltaic power generation in ordinary houses does not increase.

  Therefore, in order to eliminate the economic burden due to the purchase of solar power generation equipment by the owner of a general house, conventionally, as disclosed in, for example, Patent Document 1 below, an electric power company sets the installation location of the power generation equipment in a general house. Borrowed from the owner of the building, installed the power generation facility at the installation location, lent the power generation facility to the owner of the general housing, distributed the power generated by the power generation facility, and rented the installation location of the power generation facility And a solar power generation system that settles the electricity charges consumed at that location, or a third party to invest in the installation of the power generation facility, and the dividend for the investment in the power generation facility and There has also been proposed a solar power generation system that settles the consumed electricity charge.

JP 2002-281668 A

  However, the installation location of the power generation facility is borrowed from the owner of a general house, the power generation facility is installed, the power generation facility is lent to the owner of the general house, and the power generated by the power generation facility is distributed. If the rent of the installation location of the site and the electricity charge consumed at that location are settled, the owner of the general house that lends the installation location of the power generation facility will own its own power generation facility for the future It cannot be expected that the payment of the electricity charge will be greatly reduced by using the electric power generated by the own power generation facility. And the use of the installation location of power generation facilities is also bound by the contract.

  In addition, as long as the power generation equipment is installed at the installation location rented by the power company, the amount of power generated by the power generation equipment is managed, dividends are paid to investors in the power generation equipment, and You must continue your management work. For this reason, the electric power company is continuously burdened by these management tasks.

  The present invention has been made in view of such conventional problems. The main object of the present invention is to allow a consumer who owns a general house to install and use a natural energy power generation facility such as solar power generation on a roof of a home without incurring the economic burden of purchasing the facility. To provide an electricity rate management device for a natural energy power generation system that can reduce the burden on the management of electric power companies related to power generation facilities, thereby further improving the penetration rate of solar power generation systems It is in.

Means for Solving the Problems and Effects of the Invention

  According to the electricity rate management device of the power generation system according to the first aspect of the present invention, a service line for connecting a distribution line of transmission power and a distribution board provided on a site owned by a consumer, The installed power generation facility using natural energy, the power generation side circuit connecting the power generation facility and the distribution board, and the amount of reverse power flow supplied to the distribution line through the service circuit can be measured. A power inlet metering means provided in the electric circuit, wherein the electric power retailer purchases the electric power retailer from the electric power wholesaler and sells it to the consumer, and the reverse flow power is supplied by the electric power wholesaler to the power generation facility. An electricity charge management device for a power generation system that is to be purchased directly or indirectly from an owner, wherein the power generation facility is owned by an investor, and the power retailer is in charge of the consumer every predetermined period. From the generated power And collecting a fee for the power generation equipment, and paying a dividend fee to the owner of the power generation facility. When the accumulated amount reaches a target amount, a target amount setting unit that stores a set value of the target amount that is set on the premise that the ownership of the power generation equipment is transferred from the investor to the consumer; and Each input value of the generated power amount measured every predetermined period by the generated power metering means provided in the power generation side electric circuit and the reverse flow power amount measured every predetermined period by the inlet power amount measuring means is stored. Based on the measured value input unit, the stored value of the generated power amount and the stored value of the reverse power flow amount, the consumed amount of the generated power amount consumed through the distribution board is calculated, and the consumed amount is Based on the dividend amount A payout amount calculation unit to be stored, a power sale fee calculation unit that calculates and stores a power sale fee of reverse power flow based on a stored value of the reverse power flow amount, and a predetermined period of the investor until the previous calculation date Revenue integrated amount storage unit for storing an integrated revenue amount for each income, a stored value of a dividend fee of the dividend amount calculation unit, a stored value of a power sale fee of the power sale fee calculation unit, and the revenue integration Based on the stored value of the accumulated revenue amount of the amount storage unit, the accumulated revenue amount calculation unit that calculates and stores the accumulated revenue amount up to this time, the stored value of the accumulated revenue amount of the accumulated revenue amount calculation unit, and the target Compared with the stored value of the target amount of the amount setting unit, it is determined that the ownership can be transferred when the accumulated amount of revenue exceeds the target amount, and the determination unit stores the determination result and the determination unit stores When the judgment result is the result that ownership can be transferred An output control unit that outputs detection information indicating that ownership can be transferred and outputs the accumulated revenue amount up to this time stored in the accumulated revenue amount calculation unit to the accumulated revenue amount storage unit. can do.

  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 integrated amount of income calculation unit, and the integrated amount of the investor's income When the value exceeds the target value, detection information indicating that ownership can be transferred is output, so that it is accurately detected that the accumulated amount of the income of the investor has reached a predetermined target amount for transferring the power generation equipment. be able to. As a result, ownership of the power generation equipment can be transferred from the investor to the consumer at an appropriate time, and the power generation equipment is owned by the consumer, so the power generated by the power generation equipment is consumed by the customer for free. However, when electricity is sold, the customer can receive the price. In addition, the power retailer does not need to know the amount of power generated by the power generation facility after the ownership of the power generation facility has been transferred to the consumer. Therefore, it is sufficient to calculate the electricity bill based on the amount of electricity and the amount of reverse flow power, and charge the customer, so the burden on the electricity bill management work is reduced. Moreover, since the consumption consumed through the distribution board in the generated power is calculated, it is not necessary to install a watt-hour meter for measuring the consumed power, and the power generation system can be simplified.

  According to the electricity rate management device of the power generation system according to the second aspect of the present invention, further, the power generation relative to the consumption of the generated power based on the calculated value of the consumed amount through the distribution board of the generated power amount. A generation power consumption charge calculation unit that calculates and stores a power consumption charge, and the output control unit is configured to output the generated power consumption charge stored in the generation power consumption charge calculation unit. it can.

  According to the said structure, since the consumption charge of generated electric power can be output, it is convenient when billing and collecting an electricity bill to a consumer.

  According to the electricity charge management device of the power generation system according to the third aspect of the present invention, the service power metering means, in addition to the reverse power flow amount supplied to the distribution line through the service electrical circuit, the service circuit. It is possible to measure the incoming power supplied to the distribution board through the measurement value input unit, in addition to the input values of the reverse power flow amount and the generated power amount, Means for storing an input value of the drawn-in power amount measured every predetermined period by the means, and includes a drawn-in electricity charge calculating unit for calculating and storing a drawn-in electricity charge based on the stored value of the drawn-in power amount, and the output control The unit can be configured to be able to output the electricity bill calculator stored in the electricity bill calculator.

  According to the said structure, since the drawing-in electricity bill can be output, it is convenient when billing and collecting an electricity bill to a consumer.

  According to the electricity rate management device of the power generation system according to the fourth aspect of the present invention, the service power metering means can measure the service power supplied to the distribution board through the service circuit. In addition to the input values of the reverse flow power amount and the generated power amount, the measured value input unit is configured to input an input value of the drawn power amount measured every predetermined period by the inlet power amount measuring means. And a power consumption calculation unit for calculating and storing a power charge based on the stored value of the power consumption, and a calculated value of the consumption consumed through the distribution board of the generated power. Based on the generated power consumption charge calculation unit for calculating and storing the generated power consumption charge based on the generated power consumption, and calculating the collection fee by adding the stored value of the generated power consumption charge to the stored value of the drawn-in power charge Signs A charge calculation unit, the output control unit may be configured such that the collected fee calculation unit is capable of outputting a collection charges stored.

  According to the above-described configuration, it is convenient because it is not necessary to add the drawn-in electricity charge and the generated power consumption charge in order to calculate the amount to be charged to the customer when charging or collecting the electricity charge. .

  According to the electricity charge management device of the power generation system according to the fifth aspect of the present invention, the power sale charge calculation unit is further replaced with a power sale charge input part that stores the input value of the already calculated power sale charge. In addition, it can be configured to include a drawing-in electricity charge input unit that stores the input value of the drawing-in electricity charge that has already been calculated.

  According to the electricity rate management device of the power generation system according to the sixth aspect of the present invention, the unit price of the generated power and the unit price of the reverse power flow can be set to be changeable, respectively, and the unit price of the generated power can be changed, A power unit price setting unit for storing each set value of the unit price of the reverse power flow, wherein the dividend amount calculation unit is configured to store the dividend unit price of the generated power stored in the power unit price setting unit and the consumed power consumption calculation unit; The dividend amount is calculated by multiplying the stored consumption, and the power selling fee calculation unit is configured to store the unit price of the reverse power stored in the power unit price setting unit and the reverse power stored in the measurement value input unit. A power sale fee can be calculated by multiplying the amount.

  According to the above-described configuration, the set values of the unit price of the backflow power and the unit price of the generated power can be changed in various ways. For example, it is possible to flexibly deal with various contracts for power wholesalers and investors.

  According to the electricity rate management device for the power generation system according to the seventh aspect of the present invention, the dividend unit price of the generated power, the sales unit price of the generated power, and the unit price of the reverse power flow can be set to be changeable, and A power unit price setting unit that stores a unit price of generated power and a set value of a unit price of generated power and a unit price of reverse flow power; and the dividend amount calculating unit is a dividend of generated power stored in the power unit price setting unit. A dividend amount is calculated by multiplying the unit price by the consumption stored in the generated power consumption calculation unit, and the power sale fee calculation unit stores the unit price of the reverse power flow stored in the power unit price setting unit. , Multiplying the amount of reverse power flow stored in the measurement value input unit to calculate a power selling fee, and the generated power consumption fee calculating unit stores the unit price of the generated power stored in the power unit price setting unit, Power generation It may be configured to calculate the generated power consumption rates by multiplying the consumption amount consumed through distribution board of competence.

  According to the said structure, since the setting value of the sales unit price of generated electric power can be changed variously, it can respond flexibly to the various contracts with respect to a consumer regarding a generated electric power consumption charge.

  According to the electricity rate management device of the power generation system according to the eighth aspect of the present invention, the dividend unit price of the generated power, the unit price of the reverse power flow, and the unit price of the drawn-in power can be set to be changeable, respectively, and the power generation A power unit price setting unit for storing each set value of a unit price of power dividend, a unit price of reverse power flow, and a unit price of drawn power; A dividend amount is calculated by multiplying the consumption stored in the generated power consumption calculation unit, and the power sale fee calculation unit stores the unit price of the reverse power flow stored in the power unit price setting unit, and A power selling fee is calculated by multiplying the amount of reverse power flow stored in the measured value input unit, and the drawn power rate calculating unit inputs the unit price of the drawn power stored in the power unit price setting unit and the measured value input Remember in the department By multiplying the pull-power amount it can be configured to calculate the pull-in power rates.

  According to the said structure, since the setting value of the unit price of drawn-in electric power can be changed variously, for example according to the fluctuation | variation of the unit price of wholesale electric power, various contracts with respect to a consumer can be dealt with flexibly.

  An electricity charge management device for a power generation system according to a ninth aspect of the present invention is provided in place of the power retailer of the power generation system in which the power wholesaler sells power to the consumer instead of the power retailer. In addition, the power wholesaler may be an electricity rate management device for a power generation system that sells power to the consumer.

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

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies the electricity charge 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 by no means specifies the members shown in the claims to the members of the embodiments. In particular, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in the embodiments are not intended to limit the scope of the present invention unless otherwise specified, and are merely explanations. It is just an example. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation. Furthermore, in the following description, the same name and symbol indicate the same or the same members, and detailed description thereof will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured such that a plurality of elements are configured by the same member and the plurality of elements are shared by one member. It can also be realized by sharing.
(Power generation system)

  As shown in FIG. 1, a power generation system 2 to which an electricity rate management device 1 for a power generation system according to an embodiment of the present invention is applied is a distribution board 3 provided on a distribution line 3 for transmission power and a site owned by a customer. 4, a power line 5 that connects the power generation facility 6, a power generation facility 6 that uses natural energy, and a power generation side electrical path 7 that connects the power generation facility 6 and the distribution panel 4. It is provided with a service power metering means 8 provided in the service electrical path 5.

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

  The generated power output from the 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 site. When the power generated by the power generation facility 6 is smaller than the power consumption of the load connected to the distribution board 4, the transmission power from the distribution line 3 is supplied to the distribution board 4 through the lead-in circuit 5, and the shortage of generated power is reduced. compensate. Conversely, 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 and is supplied to the distribution line 3 through the incoming line 5.

  The service electricity metering means 8 is composed of a watt-hour meter having a bidirectional metering function or two watt-hour meters having a unidirectional metering function arranged in opposite directions to the distribution board 4 through the lead-in circuit 5. It is possible to measure the amount of drawn power that is the amount of power to be supplied and the amount of reverse power flow that flows backward from the power generation system 2 to the distribution line 3.

  In this power generation system 2, the transmission power supplied from the distribution line 3 is purchased by the power retailer from the power wholesaler and sold to the consumer. The reverse power flow is received from the owner of the power generation facility 6 by the power wholesaler. Purchase directly or indirectly. According to the present invention, the power wholesaler may be a person who sells the generated power and purchases reverse power, and is not limited to an organization such as a general power company. Further, there may be a case where the power wholesaler that directly purchases the reverse power flow from the consumer and the power wholesaler that directly sells the wholesale power to the power retailer are not the same.

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

  The power generation side electric path 7 is provided with generated power measuring means 15 capable of measuring the generated power amount that is the amount of power generated by the power generation facility 6. The generated power metering means 15 is composed of a watt-hour meter having a communication function in this embodiment, and is connected to the power generation management server 16 via a communication line 17. The power generation management server 16 is owned by a power generation status manager who manages the measurement value of the amount of generated power, and the power generation status manager uses the generated power metering means 15 for each predetermined period. The amount of generated power during the period is measured, and the power generation data for each 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 the distribution data include data necessary for management, such as a measurement date (meter reading date), in addition to the measurement value of the electric energy and the property number. The distribution data and the property numbers of the power generation data for the same power generation system 2 are assigned the same numbers so as not to be confused with other power generation systems.

  The power generation facility 6 is owned by the investor, and the power retailer collects a general electricity rate based on the usage fee of the generated power and the drawn-in power from the distribution line from the consumer every predetermined period and generates power. A dividend is paid to the investor who is the owner of the facility 6. In the case of this embodiment, since the power retailer acquires and constructs the consumer for the power generation facility 6 and sells it to the power generation status manager, the investor is the power generation status manager. The owner is also a power generation status manager.

  In this power generation system 2, the measurement date by the inlet power amount measurement means 8 and the generated power measurement means 15 is determined as the day of the month. The measurement date for both does not have to be the same. The calculation date of the electricity charge by the electricity charge management device 1 is set to a predetermined date several days after the measurement date. In addition, a few days after the calculation date, the customer is billed for electricity, and the electricity retailer collects the electricity bill from the customer and then reports it to the investor the following month. Paid.

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

  As shown in FIG. 2, the electricity rate management apparatus 1 is configured 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 transmit and receive data to and from the power distribution management server 13 and the power generation management server 16 through communication lines 23 and 24 in a timely manner. The storage device 19 stores an electricity charge management program, and each unit that fulfills the processing function of the electricity charge management device 1 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 the memory even when the power is turned off. The auxiliary storage device 25 includes a storage unit that stores power rate management data. Have.

  The electricity tariff data includes the property number assigned to each power generation system 2, the name of the customer, the name of the investor, the date of measurement by the power meter 8 for each property number, the amount of power drawn in each metering date and the reverse power flow Amount, the measurement date by the generated power metering means 15, the amount of generated power for each measurement date, the calculation date of the electricity charge for each predetermined period, the generated electricity consumption fee for each calculation day, the dividend amount to the investor, the withdrawal electricity fee, the sales It includes information such as electricity bills, collection fees, revenue accumulation, transferability detection information, and the like. The accumulated revenue amount is obtained by integrating the sum of the power selling fee and the dividend amount for each measurement day, and is obtained by integrating the investors' income related to the power generation facility 6.

  In the storage unit of power charge management data of the auxiliary storage device 25, in this embodiment, based on power distribution data from the power distribution management server and 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. This data is input every weighing day. Note that the input of the power rate management data to the auxiliary storage device 25 may be performed by manual operation of the input device 20 or the like via a storage medium storing distribution data and power generation data. Further, the power charge management data stored in the auxiliary storage device 25 can be output from the output device 21 at any time as a display on the display screen or a printed matter from the printer by operating the input device 20. Yes.

  For electricity rate management data such as power generation consumption rate for each calculation day, dividend amount to investors, electricity withdrawal fee, electricity sales fee, collection fee, accumulated revenue amount, transferability detection information, etc. Based on the processing result of the management device 1, it is automatically written in the storage unit of the power charge management data of the auxiliary storage device 19.

  As shown in FIG. 3, the electricity rate management apparatus 1 includes a target amount setting unit 31, a power amount unit setting unit 32, a measurement value input unit 33, an income integrated amount storage unit 34, a generated power consumption calculation unit 35, A power consumption fee calculation unit 36, a dividend amount calculation unit 37, a power sale fee calculation unit 37, a drawn-in electricity fee calculation unit 38, a collection fee calculation unit 40, a revenue integrated amount calculation unit 41, a determination unit 42, and an output control unit 43 are provided. ing.

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

  The power unit price setting unit 32 stores the unit price of the power amount per unit power amount. In this embodiment, the unit price of reverse power flow, which is a sales fee per unit reverse power flow amount, the unit price of power consumption, which is an electric fee per unit power consumption, and the amount of generated power, which is an electric fee per unit power generation amount. The sales unit price and the unit price of generated power, which is the amount of dividend per unit generated power, are stored in each setting unit 32a, 32b, 32c, 32d. Each unit price is stored in the auxiliary storage device 25, and is input from the auxiliary storage device 25 at the start of processing. Each unit price can be changed by operating the input device 20.

  The measured value input unit 33 includes a generated power amount input unit 33a, a reverse power flow input unit 33b, and a drawn power amount input unit 33c. The measured value and the measured power value for each predetermined period and the measured power value of the reverse flow power amount by the inlet power amount measuring means 8 are stored. In this embodiment, these measurement values are called from data having the same property number and the latest measurement date in the electricity charge management data of the auxiliary storage device 19. However, the measurement value may be input to the measurement value input unit 33 by operating the input device 20 via data recorded on a storage medium, for example, as necessary.

  The accumulated revenue amount storage unit 34 is provided in the auxiliary storage device 25 and stores the previous accumulated revenue amount calculated by the incoming electricity charge calculation unit 38. The previous accumulated amount of income is the accumulated amount of income included in the data of the electricity price management data stored in the auxiliary storage device 25 with the same property number and the same calibration date as the previous calibration date.

  Based on the stored value of the generated power amount and the stored value of the reverse power flow amount of the measured value input unit 33, the consumed power consumption calculation unit 35 calculates the consumed amount of the generated power through the distribution board 4 based on the stored value. Calculate and store. This consumption is calculated by subtracting the reverse flow power amount from the generated power amount.

  The generated power consumption charge calculation unit 36 calculates and stores the generated power consumption charge based on the stored value of the consumption by the consumption calculation unit 34. The generated power consumption charge is calculated by multiplying the sales unit price of the generated power stored in the unit price setting unit 32c of the generated power by the consumption.

  The payout amount calculation unit 37 calculates and stores the payout amount based on the stored value of the consumption amount calculation unit 34. The payout amount is calculated by multiplying the payout 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 drawn-in electricity charge calculation unit 38 calculates and stores a drawn-in electricity charge based on the stored value of the drawn-in power amount in the input unit 33c of the measurement value input unit 33. This electricity charge electricity is calculated by multiplying the unit price of the drawn power stored in the setting unit 32b of the power unit price setting unit 32 and the amount of drawn power.

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

  The collection fee calculation unit 40 calculates the collection fee 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 electricity charge calculation unit 38. And remember. This collection fee is calculated by adding a drawn-in electricity charge to the generated power charge.

  The revenue integrated amount calculation unit 41 stores the stored power value of the reverse power flow of the power selling fee calculation unit 39, the stored value of the dividend amount of the dividend amount calculation unit 37, and the previous revenue of the integrated revenue amount storage unit 34. Based on the stored value of the accumulated amount, the accumulated income amount of the investor is calculated and stored. The revenue integrated amount is calculated by adding the dividend amount and the power selling fee to calculate the income amount for each predetermined period, and adding the income amount for each predetermined period to the previous income integrated amount.

  The determination unit 42 compares the target amount stored in the target amount setting unit 31 with the stored value of the integrated revenue amount of the integrated revenue amount calculation unit 41, and transfers the ownership if the integrated revenue amount is equal to or greater than the target amount. Judgment is possible and the judgment result is stored.

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

In addition, the output control unit 43 stores the generated power consumption fee, dividend amount, incoming electricity fee, power selling fee, collection fee, accumulated revenue amount, and detection information on whether ownership transfer is possible in the auxiliary storage device 25 that is calculated and stored. Can be written in each storage section.
(Operation of electricity bill calculation process)

  In advance, the electricity rate management apparatus 1 is activated by operating the input device 20, and first, the target amount of the revenue integrated amount is set in the target amount setting unit 31. Each power unit price is set in the power unit price setting unit 32. After that, when the electricity rate management data such as the amount of generated power, the reverse power flow amount, and the amount of drawn-in power is input when necessary and the calculation process of the electricity rate is started, the electricity rate stored in the auxiliary storage device 25 is started. Necessary data is selected from the management data, and the data is stored in the measurement value input unit 32.

  Next, the generated power consumption calculation unit 35 and the dividend amount calculation unit 37 calculate the dividend fee based on the generated power amount and the reverse power flow amount stored in the measurement value input unit 33, and the power sale fee calculation unit. 39 operates to calculate a power selling fee, and based on the calculated dividend fee and power selling fee and the stored value of the revenue integrated amount storage unit 34, the integrated revenue amount calculating unit 41 calculates the integrated revenue amount. At the same time, the drawn-in electricity charge calculation unit 38 calculates a drawn-in electricity charge based on the drawn-in power amount 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 fee is calculated based on the generated power amount and the reverse power flow amount, and the collection fee calculation unit 40 calculates the collection fee based on the calculated drawn-in electricity fee and the generated power consumption fee.

  Next, the determination unit 42 compares the target amount stored in the target amount setting unit 31 with the calculated integrated revenue amount to determine whether the integrated revenue amount has reached the target amount.

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

  Further, the output control unit 43 outputs the generated power consumption fee, the drawn-in electricity fee, the collection fee, the power selling fee, the dividend amount, the accumulated income amount, and the calculation date, which are calculated and stored, to the auxiliary storage device 25, and the auxiliary storage device 25 Of the electricity charge management data stored in the device 25, the one with the same property number and the newest measurement date is selected, and the generated generated power consumption charge in the selected electricity charge management data is drawn. Write to the storage unit of the auxiliary storage device 25 corresponding to the electricity fee, the collection fee, the power selling fee, the dividend amount, the accumulated revenue amount, the calculation date, etc., thereby completing the calculation process of the electricity fee.

When detection information indicating that ownership can be transferred is output from the electricity rate management device 1, the power retailer has transferred the ownership of the power generation facility 6 from the investor to the consumer, to the consumer, the investor, and the power wholesaler. Notify that. Then, the electric power company changes the payment target of the power sale fee to the consumer.
(Another embodiment of the electricity charge management device)

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

  The electricity charge management device of the power generation system of the present invention is such that a consumer who owns a general house installs a natural energy power generation facility such as solar power generation on the roof of a home without incurring the economic burden of purchasing the facility. It can be used for applications that reduce the burden on the management of electric power companies related to power generation facilities.

DESCRIPTION OF SYMBOLS 1 ... Electric power rate management apparatus 2 ... Power generation system 3 ... Distribution line
DESCRIPTION OF SYMBOLS 4 ... Distribution board 5 ... Lead-in electric circuit 6 ... Power generation equipment 7 ... Power generation side electric circuit 8 ... Inlet power amount measuring means 9 ... Solar power generation panel 10 ... Connection box 11 ... Power conditioner 12 ... Switch 13 ... Distribution management server 14 ... Communication line 15 ... Generated power metering means 16 ... Power generation management server 17 ... Communication line 18 ... Central processing unit 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 Electric power unit price setting unit 33 Measurement value input unit 34 Revenue integrated amount storage unit 35 Generated power consumption calculation unit 36 Generated power consumption fee calculation unit 37 Dividend amount Calculation unit 38 ... Withdrawal electricity rate calculation unit 39 ... Power sale fee calculation unit 40 ... Collection fee calculation unit 41 ... Revenue integrated amount calculation unit 42 ... Determination unit 43 ... Output control unit 44 ... Withdrawal electricity rate input unit 45 ... Electric charge input section

Claims (9)

A lead-in electric circuit that connects a distribution line of transmission power and a distribution board provided on a site owned by a customer,
Power generation facilities using natural energy installed in the site;
A power generation side electric circuit connecting the power generation facility and the distribution board;
It is possible to measure the amount of reverse power flow supplied to the distribution line through the lead-in electrical circuit, comprising a power meter for the inlet port provided in the lead-in electrical circuit,
The drawn-in power is purchased from a power wholesaler by a power retailer and sold to the consumer.
The reverse flow power is an electricity charge management device of a power generation system that the power wholesaler decided to purchase directly or indirectly from the owner of the power generation facility,
The power generation facility is owned by the investor,
For each predetermined period, the power retailer collects a usage fee for the generated power from the consumer, and pays a dividend fee to the owner of the power generation facility,
When the accumulated amount of revenue for each predetermined period of the investor consisting of the selling power of the reverse power flow for each predetermined period and the dividend fee reaches a target amount, the ownership of the power generation facility is transferred from the investor to the A target amount setting unit that stores a set value of the target amount that is set on the premise of moving to a consumer;
Each input value of the generated power amount measured every predetermined period by the generated power metering means provided in the power generation side electric circuit and the reverse flow power amount measured every predetermined period by the inlet power amount measuring means is stored. Weighing value input section to
Based on the stored value of the generated power amount and the stored value of the reverse power flow amount, the consumed amount of the generated power amount consumed through the distribution board is calculated, and the dividend amount is calculated based on the consumed amount. A payout amount calculation unit stored in memory,
A power sale fee calculation unit for calculating and storing a power sale fee of reverse power flow based on the stored value of the reverse flow power amount;
An accumulated income amount storage unit for storing an accumulated income amount obtained by accumulating income for each predetermined period of the investor until the previous calculation date;
Based on the stored value of the dividend fee in the dividend amount calculation unit, the stored value of the power sale fee in the power sale fee calculation unit, and the stored value of the accumulated revenue amount in the accumulated revenue amount storage unit, the accumulated revenue up to this time Revenue integrated amount calculation unit that calculates and stores the amount of money,
Compare the stored value of the accumulated revenue amount of the accumulated revenue amount calculation unit with the stored value of the target amount of the target amount setting unit, and determine that ownership transfer is possible when the accumulated revenue amount exceeds the target amount. A determination unit for storing the determination result;
When the determination result stored in the determination unit is a result that ownership can be transferred, the detection information that ownership can be transferred is output, and the accumulated revenue amount up to this time stored in the accumulated revenue amount calculation unit An output control unit for outputting to the revenue integrated amount storage unit,
An electricity charge management device for a power generation system comprising: In the electricity bill management device of the power generation system according to claim 1, further comprising:
A power generation power consumption charge calculation unit that calculates and stores a power generation power consumption charge for the consumption of the generated power based on a calculated value of the consumption consumed through a distribution board of the power generation amount;
The electric power management apparatus for a power generation system, wherein the output control unit is capable of outputting the generated power consumption fee stored in the generated power consumption fee calculation unit. In the electricity bill management apparatus for the power generation system according to claim 1 or 2,
In addition to the reverse power flow amount supplied to the distribution line through the service line, the service power metering means can measure the service power supplied to the distribution board through the service line.
The measured value input unit stores an input value of the drawn-in power amount measured every predetermined period by the drawn-in port power amount measuring means in addition to the input values of the reverse flow power amount and the generated power amount. age,
An electricity bill calculator that calculates and stores an electricity bill based on a stored value of the amount of electricity drawn;
The power control device for a power generation system, wherein the output control unit is capable of outputting a service charge stored in the service charge calculation unit. In the electricity bill management device of the power generation system according to claim 1, further comprising:
The service power metering means for the service entrance can measure the service power supplied to the distribution board through the service electrical circuit,
The measured value input unit stores an input value of the drawn-in power amount measured every predetermined period by the drawn-in port power amount measuring means in addition to the input values of the reverse flow power amount and the generated power amount. age,
An electricity bill calculator that calculates and stores an electricity bill based on the stored value of the amount of electricity drawn,
A generated power consumption charge calculation unit that calculates and stores a generated power consumption charge for consumption of the generated power based on a calculated value of the consumed power through a distribution board of the generated power amount; and
A collection fee calculation unit that calculates a collection fee by adding the stored value of the generated power consumption fee to the stored value of the drawn-in electricity charge,
The output control unit is capable of outputting a collection fee stored in the collection fee calculation unit. In the electric bill management device of the power generation system according to claim 2, further,
The power sale fee calculation unit is replaced with a power sale fee input unit that stores the input value of the already calculated power sale fee, and at the same time, a power generation provided with a charge electricity fee input unit that stores the already calculated input value of the drawn electricity fee System electricity charge management device. In the electricity bill management device of the power generation system according to claim 1, further comprising:
A unit price for generating power and a unit price for reverse flow power can be set to be changeable, respectively, and a power unit price setting unit for storing each set value of the unit price for the generated power dividend and the reverse power flow,
The dividend amount calculation unit calculates a dividend amount by multiplying the dividend unit price of the generated power stored in the power unit price setting unit by the consumption amount stored in the consumed power consumption calculation unit,
The power sale fee calculation unit calculates a power sale fee by multiplying the unit price of reverse power flow stored in the power unit price setting unit and the amount of reverse power flow stored in the measurement value input unit. Electricity charge management device for power generation system. In the electric bill management device of the power generation system according to claim 2, further,
The unit price of generated power, the unit price of generated power, and the unit price of reverse power can be changed, and each of the unit price of generated power, the unit price of generated power, and the unit price of reverse power A power unit price setting unit for storing values is provided.
The dividend amount calculation unit calculates a dividend amount by multiplying the dividend unit price of the generated power stored in the power unit price setting unit by the consumption amount stored in the consumed power consumption calculation unit,
The power sale fee calculation unit calculates a power sale fee by multiplying the unit price of reverse power flow stored in the power unit price setting unit and the amount of reverse power flow stored in the measurement value input unit,
The generated power consumption charge calculation unit multiplies the sales unit price of the generated power stored in the power unit price setting unit by the consumption consumed through the distribution board of the generated power amount, thereby generating the generated power consumption charge. An electricity charge management device for a power generation system, characterized in that In the electric bill management device of the power generation system according to claim 3, further,
Divided unit price of generated power, unit price of reverse flow power and unit price of drawn power can be set to be changeable, and each set value of the unit price of generated power dividend, unit price of reverse power flow and unit price of drawn power can be set It has a unit price setting unit for storing,
The dividend amount calculation unit calculates a dividend amount by multiplying the dividend unit price of the generated power stored in the power unit price setting unit by the consumption amount stored in the consumed power consumption calculation unit,
The power sale fee calculation unit calculates a power sale fee by multiplying the unit price of reverse power flow stored in the power unit price setting unit and the amount of reverse power flow stored in the measurement value input unit,
The drawn power charge calculation unit calculates a drawn power charge by multiplying the drawn power unit price stored in the power unit price setting unit by the drawn power amount stored in the measurement value input unit. Electricity charge management device for power generation system. In the electricity bill management device of the power generation system according to claim 1,
An electricity charge management device for a power generation system in which the electric power wholesaler sells electric power to the consumer instead of the electric power retailer.

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