JP2011176948A - Billing apparatus, billing method, and billing system - Google Patents

Abstract

Providing profits unfairly to each of a plurality of distributed power sources.
A charge management device for calculating, for each distributed power source, a value of power supplied to a system by a plurality of distributed power sources, and acquiring a power amount for acquiring a power generation amount for each distributed power source. Unit 310, total calculation unit 320 that calculates the total power generation amount that is the total power generation amount for each distributed power source 100, and total revenue obtained from the power supplied to the system by the plurality of distributed power sources 100, And a charge calculation unit 330 that calculates a price for each distributed power source 100 by distributing the power according to the power generation rate that is the ratio of the power generation amount of the distributed power source.
[Selection] Figure 5

Description

  The present invention relates to a charge management apparatus, a charge management method, and a charge management system for determining a consideration (amount of power sale) of power supplied to a system by a distributed power source connected to the system.

  In recent years, by supplying (reverse power flow) power to a grid (hereinafter also referred to as a power grid), that is, selling it to a power company , A system has been adopted that allows compensation to be obtained according to the amount of electricity sold. However, when a large number of photovoltaic power generation devices are spread and a large amount of power is reversely flowed into the system all at once, the voltage value at the interconnection point rises and becomes an appropriate value (101 ± 6V, 202 ± 20V). ) Has been pointed out.

  As a method for dealing with such a problem, for example, in Patent Document 1, when the voltage value at the interconnection point exceeds a predetermined threshold (for example, 107 V), it is effective to reversely flow from the distributed power source to the system. A technique for suppressing electric power or a technique for appropriately maintaining the voltage value at the interconnection point by supplying phase advance reactive power is disclosed.

  However, the voltage at the interconnection point is more distant from the substation and transformer, and the higher the point located at the end of the distribution line, the more easily the distributed power supply installed near the end causes reverse power flow. The subject that the amount of suppression of active power and the amount of supply of reactive power increase is reported (nonpatent literature 1). When the amount of active power suppression increases, that is, when the reverse power flow rate of active power decreases, a consumer with a distributed power source loses the opportunity to sell the generated power. Therefore, depending on the position where the distributed power supply is installed, the result of unfairness in the power sales is generated.

  On the other hand, Patent Document 2 discloses a technique for setting a voltage threshold value at which each distributed power source starts control for suppressing voltage rise so that the voltage threshold value increases as the distance from a substation or transformer increases. Yes. According to this technology, the voltage threshold is set lower at a nearby point such as a substation where the voltage rise is less likely to occur than at a distance, so that the voltage rise suppression function works even for a slight voltage rise. As a result, unfairness due to distance from substations and transformers will be mitigated.

Japanese Patent No. 4109614 Japanese Patent No. 4266003

Report of Central Research Institute of Electric Power Industry “Development of Distribution Line Voltage Control Method for Photovoltaic Power Generation System-New Reactive Power Control Method for Suppressing Voltage Increase”

However, the above prior art has the following problems.
In the first place, in the above-described prior art, in order to control so as to eliminate unfairness with respect to the profits that each distributed power source can obtain, it is necessary to appropriately determine a voltage threshold value. However, in order to determine an appropriate value for the fair voltage threshold, the parameters of the distribution system (line type, length, impedance, etc.), the installation position of the distributed power source connected to the system, the amount of power generation, etc. must be accurately determined. It is difficult to calculate after understanding.

  Furthermore, the number of distributed power sources linked to the system is expected to vary. For example, there are consumers who newly install solar power generation devices or customers who remove solar power generation devices. Considering such a situation, it is difficult to set a fair voltage threshold according to the distance from the substation or transformer.

  Accordingly, the present invention has been made to solve the above-described problems, and provides a fee management device, a fee management method, and a fee management system capable of distributing profits fairly to each of a plurality of distributed power sources. For the purpose.

  In order to solve the above-described conventional problems, a charge management apparatus according to the present invention calculates a charge for power supplied to a system among power generated by a plurality of distributed power supplies, for each distributed power supply. An electric energy acquisition unit that acquires an electric power generation amount for each of the distributed power sources, a total calculation unit that calculates a total electric power generation amount that is a total of the electric power generation amounts of the distributed power sources, and the plurality of distributed power sources Distributes the total revenue obtained from the power supplied to the grid according to the power generation rate that is the ratio of the power generation amount of the distributed power source to the total power generation, thereby calculating the consideration for each distributed power source A charge calculation unit.

  As a result, the total profit, which is the sum of the profits from multiple distributed power sources, is distributed to each distributed power source according to the amount of power generated by the distributed power source. be able to. For example, even if a certain distributed power source generates a large amount of power, even if the effective power actually supplied to the system is controlled in order to stabilize the voltage value of the system, Since the charge management apparatus according to the present invention determines the price according to the amount of power generation that should have been able to be supplied to the grid, it is possible to reduce unfairness for each distributed power source.

  Further, the power amount acquisition unit further acquires an effective power amount for each distributed power source among the power supplied to the system, and the total calculation unit further calculates a total effective power amount for each distributed power source. And the charge calculation unit calculates the total profit by multiplying the total active power amount and the unit price of the active power amount, and the power generation amount ratio for each distributed power source And the consideration for each of the distributed power sources may be calculated by multiplying the calculated total revenue and the calculated power generation amount ratio.

  As a result, the total revenue calculated by multiplying the active power supplied to the grid by the unit price of the active power is distributed to each distributed power source according to the ratio of the power generation amount for each distributed power source. Unfairness for each power source can be reduced. In other words, in general, profits are determined according to the amount of active power supplied to the grid, whereas a certain distributed power source suppresses the amount of active power to contribute to the stabilization of the grid. However, since the total revenue is distributed according to the amount of power generation, unfairness for each distributed power source can be reduced.

  Further, the power amount acquisition unit further acquires a reactive power amount for each distributed power source among the power supplied to the system, and the total calculation unit further calculates a total reactive power amount for each distributed power source. The charge calculation unit distributes a part of the total revenue according to the power generation amount ratio, and the other part of the total revenue is calculated as the total reactive power amount. The value for each distributed power source may be calculated by distributing the reactive power according to the ratio of the reactive power amount for each distributed power source.

  As a result, reactive power may be supplied to the system to stabilize the system, so a part of the total revenue is distributed according to the amount of reactive power supplied to the system, contributing to system stabilization. As a compensation, the company can distribute revenue fairly.

  Further, the charge calculation unit further calculates a part of the total revenue by multiplying the total revenue by a ratio of the total active power amount to a total of the total active power amount and the total reactive power amount. The other part of the total revenue may be calculated by multiplying the total revenue by the ratio of the total reactive power amount to the total of the total active power amount and the total reactive power amount.

  As a result, the total revenue is distributed according to the ratio between the amount of active power supplied to the grid and the amount of reactive power supplied to the grid, so the contribution to grid stabilization can be appropriately reflected in the selling price. it can.

  The charge calculation unit further calculates a part of the total revenue and the other part using the value calculated by multiplying the total reactive power by a predetermined weighting factor as the total reactive power. May be.

  Thereby, since the contribution degree of the supply of reactive power to the supply of active power can be taken into consideration, the total revenue can be distributed flexibly.

  The total revenue may include revenue obtained from active power supplied to the system by the plurality of distributed power sources and revenue obtained from reactive power.

  Thereby, even if a profit is obtained not only for the active power but also for the reactive power, it is possible to distribute the profit fairly.

  Further, the power amount acquisition unit further acquires an effective power amount for each distributed power source among the power supplied to the system, and the total calculation unit further calculates a total effective power amount for each distributed power source. And the charge calculation unit calculates a ratio of the total active power amount to the total power generation amount, and calculates the calculated ratio, the power generation amount for each distributed power source, and the active power amount. The price for each distributed power source may be calculated by multiplying by the unit price.

  Thereby, it is possible to calculate the price for each distributed power source according to the power generation amount of the distributed power source without directly calculating the total profit.

  The power amount acquisition unit may acquire, as the power generation amount by the distributed power source, the power generation amount that can be generated when the distributed power source suppresses the power generation amount.

  Thereby, for example, based on the power generation amount that should have been able to be generated if the power generation amount is not suppressed, even if the power generation amount is suppressed, instead of suppressing the effective power amount supplied to the system by the distributed power source. Therefore, the total revenue can be distributed fairly.

  The power amount information transmitting device according to the present invention includes a power amount acquisition unit that acquires a power generation amount by a distributed power source and a power amount supplied to the system by the distributed power source, and the power generation amount and the power amount. And a transmission unit that transmits the generated power amount information to a predetermined management device.

  Thereby, since the management apparatus can easily acquire the power generation amount and the power amount for each distributed power source, it is possible to support the calculation of the total profit and the calculation of the consideration for each distributed power source.

  The power amount acquisition unit may acquire the effective power amount supplied to the system by the distributed power source as the power amount.

  Thereby, for example, when a profit is obtained for the amount of active power supplied to the grid, the calculation of the total profit in the management apparatus can be supported.

  The power amount acquisition unit may further acquire the reactive power amount supplied to the system by the distributed power source as the power amount.

  Thereby, for example, when a profit is obtained for the amount of reactive power supplied to the grid, the calculation of the total profit in the management apparatus can be supported. In addition, for example, it is possible to support the distribution of total revenue according to the amount of reactive power supplied to the grid.

  The power amount acquisition unit may acquire, as the power generation amount by the distributed power source, the power generation amount that can be generated when the distributed power source suppresses the power generation amount.

  Thus, for example, instead of suppressing the amount of active power supplied to the system by the distributed power source, even if the amount of power generation is suppressed, the amount of power generation that could have been generated if it was not suppressed is acquired. Therefore, it is possible to support fair distribution of total revenue in the management apparatus.

  Further, the charge management system according to the present invention is a charge management system that calculates the value of power supplied to a system among the power generated by a plurality of distributed power sources for each of the distributed power sources, and the plurality of distributed power sources. Compensation for each distributed power source is calculated based on a plurality of power amount information transmission devices that are provided in each of the power sources and transmit power amount information, and based on the power amount information transmitted from the plurality of power amount information transmission devices Each of the plurality of power amount information transmitting devices acquires a power generation amount by a corresponding distributed power source and a power amount supplied to the system by the corresponding distributed power source And a transmission unit that generates the power amount information indicating the power generation amount and the power amount, and transmits the generated power amount information to the charge management device, wherein the charge management device includes the plurality of powers Send quantity information A power amount information acquisition unit that acquires the power amount information from each of the devices, a total calculation unit that calculates a total power generation amount that is a total of the power generation amount for each distributed power source, and the plurality of distributed power sources in the system A charge calculation unit that calculates the consideration for each distributed power source by distributing the total revenue obtained from the supplied power according to the power generation amount ratio that is the ratio of the power generation amount of the distributed power source to the total power generation amount With.

  Note that the present invention can be realized not only as a charge management device and a power amount information transmission device, but also as a method using the processing units constituting the charge management device and the power amount information transmission device as steps.

  In addition, some or all of the constituent elements of each of the charge management apparatuses and the electric energy information transmission apparatus may be configured by a single system LSI (Large Scale Integration). The system LSI is an ultra-multifunctional LSI manufactured by integrating a plurality of components on one chip. Specifically, a microprocessor, a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. It is a computer system comprised including.

  According to the present invention, it is possible to distribute revenue fairly to each of a plurality of distributed power sources.

It is a schematic diagram which shows an example of a structure of the power distribution system and fee management system in embodiment of this invention. It is a block diagram which shows an example of a structure of the electric energy information transmitter in embodiment of this invention. It is a block diagram which shows an example of a structure of the distributed power supply in embodiment of this invention. It is a flowchart which shows an example of the control operation of the output by the distributed power supply in embodiment of this invention. It is a block diagram which shows an example of a structure of the charge management apparatus in embodiment of this invention. It is a block diagram which shows an example of a structure of the charge management apparatus in embodiment of this invention. It is a figure which shows an example of the data memorize | stored in the data storage part in embodiment of this invention. It is a flowchart which shows an example of operation | movement of the charge management apparatus in embodiment of this invention. It is a block diagram which shows an example of a structure of the distributed power supply in the modification of embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The fee management apparatus according to the embodiment of the present invention calculates the total profit obtained as a consideration for the power supplied (reverse power flow) by a plurality of distributed power sources to the grid, by the total amount of power generated by each of the plurality of distributed power sources. The value for each distributed power source is calculated by distributing the power generation amount of the distributed power source with respect to a certain total power generation amount.

  The power amount information transmitting apparatus according to the embodiment of the present invention acquires the power generation amount by the distributed power source and the power amount supplied to the system by the distributed power source, and indicates the acquired power generation amount and power amount. The power amount information is transmitted to the charge management device. In addition, a fee management system according to an embodiment of the present invention includes the fee management device and the power amount information transmission device.

  FIG. 1 is a schematic diagram showing an example of the configuration of a power distribution system and a charge management system in an embodiment of the present invention. As shown in FIG. 1, the electric power distributed from the substation 10 is distributed via the high-voltage distribution line 20, converted into a low voltage by the transformer 30, and passed through the low-voltage distribution line 40 and the lead-in line 50. It is delivered to the customer 60.

  As shown in FIG. 1, a distributed power source 100 is installed in each consumer 60. The power generated by the distributed power source 100 can be reversely flowed to the power system. Here, the distributed power source 100 converts DC power supplied from a generator using natural energy such as solar power generation or wind power generation or DC power source such as a fuel cell or a storage battery into AC power by an inverter described later. By doing so, it is a device that reversely flows the generated power to the power system.

  Each distributed power source 100 includes a power amount information transmission device 200. The power amount information transmitting apparatus 200 acquires the amount of power generated by the distributed power source 100 and the amount of power supplied to the system. Furthermore, the electric energy information transmitting device 200 has a communication function, and transmits various information to the fee management device 300 installed on the network via the communication line 70, or receives information from the fee management device 300. Is possible.

  Here, the information transmitted from the power amount information transmitting device 200 to the charge management device 300 indicates, for example, the amount of power generated by the distributed power source 100 and the active power amount that has flowed backward to the power system among the generated power. It is electric energy information. Furthermore, the power amount information transmitting apparatus 200 may transmit the phase advance reactive power amount supplied to the power system in the power amount information.

  The communication line 70 may be various ones such as power line communication, optical communication, and other wireless communication, and the communication method is not limited.

  Next, the configuration of power amount information transmitting apparatus 200 in the embodiment of the present invention will be described.

  FIG. 2 is a block diagram showing an example of the configuration of the power amount information transmitting apparatus 200 according to the embodiment of the present invention. As illustrated in FIG. 2, the power amount information transmission apparatus 200 includes a power amount acquisition unit 210 and a transmission unit 220.

  The power amount acquisition unit 210 acquires the amount of power generated by the distributed power source 100 and the amount of power supplied to the system by the distributed power source 100. For example, the power amount acquisition unit 210 acquires the effective power amount as the power amount supplied to the system by the distributed power source 100. Furthermore, the power amount acquisition unit 210 may acquire a reactive power amount, specifically, a phase advance reactive power amount as the power amount supplied to the system by the distributed power source 100.

  The transmission unit 220 generates power amount information indicating the power generation amount and the power amount acquired by the power amount acquisition unit 210, and transmits the generated power amount information to the fee management apparatus 300. For example, the transmission unit 220 transmits power amount information indicating a power generation amount and an active power amount. The transmission unit 220 may transmit power amount information indicating the power generation amount, the active power amount, and the reactive power amount.

  In addition, as for the electric power generation amount in this Embodiment, it is desirable that it is the electric energy generated in order to supply to a system | strain except the electric power supplied to the load 90 in the consumer 60.

  Next, detailed configurations of the distributed power source 100 and the power amount information transmission apparatus 200 according to the embodiment of the present invention will be described. As shown also in FIG. 1, power amount information transmitting apparatus 200 in the embodiment of the present invention is provided in distributed power supply 100.

  FIG. 3 is a block diagram showing an example of the configuration of the distributed power supply 100 installed in each consumer 60. As shown in FIG. As shown in FIG. 3, the distributed power source 100 includes a DC power source 110, a power control unit 120, and a communication interface 130.

  The power (active power) generated by the distributed power source 100 can flow backward to the power system via the power receiving point 80 connected to the lead-in line 50, or can be supplied to the load 90. Yes.

  The DC power supply 110 is a generator or a storage battery that can supply DC power, such as a solar power generation device, a fuel cell, or a storage battery. The DC power supplied from the DC power supply 110 is converted into AC power by the inverter 121.

  The power control unit 120 is a control unit that converts DC power generated by the DC power source 110 into AC power and supplies (reverse power flow) to the system via the power receiving point 80. As illustrated in FIG. 3, the power control unit 120 includes an inverter 121, a voltage sensor 122, and a power amount information transmission device 200.

  For example, the power control unit 120 determines the amount of active power (active power amount) and reactive power (reactive power amount) to be supplied to the system, and determines the active power and reactive power of the determined power amount. Supply to the grid. In addition, the power control unit 120 transmits power amount information indicating the amount of power generation and the like to the fee management apparatus 300.

  The inverter 121 converts DC power into AC power by switching a switching element (not shown). At this time, the inverter 121 can control the power factor of the AC power based on the control from the control unit 212. That is, the inverter 121 can control the active power amount and the reactive power amount in the power supplied to the system via the power receiving point 80. Thereby, the reverse power flow of active power and the supply of reactive power can be performed to the power system.

  The voltage sensor 122 is a sensor that measures the voltage value of the power line connecting the power receiving point 80 and the inverter 121. For example, the voltage sensor 122 detects the voltage value of the power receiving point 80 by measuring the voltage value of the power line inside the power control unit 120. Note that the voltage sensor 122 may directly measure the voltage value at the power receiving point 80.

  As described with reference to FIG. 2, the power amount information transmission apparatus 200 includes a power amount acquisition unit 210 and a transmission unit 220. The power amount acquisition unit 210 includes a power generation amount sensor 211 and a control unit 212. The transmission unit 220 includes a data processing unit 221.

  The power generation amount sensor 211 is a sensor that measures the amount of DC power generated by the DC power source 110, that is, the amount of power generation.

  The control unit 212 controls the operation of the inverter 121 based on the voltage value at the power receiving point 80 detected by the voltage sensor 122. Specifically, the control unit 212, among the power generation amount of the DC power supply 110 detected by the power generation amount sensor 211, the power amount (active power amount) that can flow backward to the power system and the reactive power amount to be supplied. Is calculated. And the control part 212 produces | generates and notifies a control command to the inverter 121 so that the calculated active electric energy and reactive electric energy may be output.

  In general, in the low voltage distribution system, the voltage value of each low voltage distribution system (for example, the voltage value at the power receiving point 80) is within 101V ± 6V when the standard voltage is 100V, and within 202V ± 20V when the standard voltage is 200V. It is stipulated by Article 44 of the Enforcement Regulations of the Electricity Business Law of Japan. Therefore, when the voltage value of the power receiving point 80 exceeds a specified value (107 V in the case of the standard voltage 100V) due to the active power that the distributed power source 100 installed in the customer 60 flows backward, etc., The distributed power source 100 is required to take predetermined measures.

  For example, the distributed power source 100 supplies phase advance reactive power until a power factor constraint (for example, 85%) is reached, and if the voltage value at the power receiving point 80 deviates from a specified value, the distributed power source 100 flows backward. Measures such as suppressing active power must be taken. Therefore, the control unit 212 notifies the inverter 121 of the reactive power to be supplied to the system and the command value of the active power that enables reverse power flow based on the voltage value of the power receiving point 80 detected by the voltage sensor 122. Then, the inverter 121 is controlled.

  In addition, the control part 212 can receive the value of the reactive power supplied to the active power which performed the reverse power flow, and the system | strain from the inverter 121. FIG.

  The data processing unit 221 has a function of managing and creating data for transmitting information about the output amounts of active power and reactive power from the distributed power source 100, that is, power amount information to the charge management apparatus 300. Specifically, the data processing unit 221 detects the power generation amount (detected by the power generation amount sensor 211) output from the DC power source 110 in a predetermined period (for example, one day, one week, one month, etc.) in the distributed power source 100. Power amount data including a value of the active power that flows backward to the grid and the value of the reactive power supplied to the grid is generated in a predetermined format.

  Such power amount data is stored in, for example, an internal memory (not shown) included in the control unit 212 and is read out by the data processing unit 221. The power amount data may be stored in the memory by providing a separate memory in addition to the control unit 212.

  Data generated by the data processing unit 221 is transmitted to the fee management apparatus 300 via the communication interface 130 at predetermined intervals (daily unit, weekly unit, monthly unit, etc.).

  The communication interface 130 is an interface for performing various types of communication such as power line communication, optical communication, and other wireless communication.

  In the configuration shown in FIG. 3, the power generation amount sensor 211 is configured to detect the amount of power output from the DC power source 110 to the inverter 121, but the power generation amount sensor 211 is provided in the DC power source 110. It may be a configuration.

  Next, the operation of the distributed power source 100 according to the embodiment of the present invention will be described. Specifically, regarding the control when the voltage at the power receiving point 80 deviates in the distributed power source 100 that performs the reverse flow of active power or the reverse flow of active power and the supply of reactive power to the grid. This will be described with reference to the flowchart of FIG. FIG. 4 is a flowchart showing an example of an operation of stabilizing the voltage at the power receiving point 80 performed by the distributed power source 100 according to the embodiment of the present invention.

  The voltage sensor 122 detects the voltage value of the power receiving point 80 periodically (for example, at intervals of 1 second) (step S101). The control unit 212 determines whether or not the voltage value of the power receiving point 80 detected by the voltage sensor 122 deviates from an upper limit value (for example, 107 V) (step S102).

  When the voltage value of the power receiving point 80 does not deviate from the upper limit value (No in step S102), the control unit 212 continuously outputs the active power that is currently output, or the active power and the reactive power. A command is given to the inverter 121 (step S106). Then, the voltage sensor 122 continues to periodically detect the voltage value at the power receiving point 80 (return to step S101).

  On the other hand, when the control unit 212 determines that the voltage value at the power receiving point 80 deviates from the upper limit value (Yes in step S102), the control unit 212 determines that the power factor of the power output from the inverter 121 is the lower limit value. It is determined whether or not (for example, 85%) has been reached (step S103). If the power factor has not reached the lower limit (No in step S103), the control unit 212 instructs the inverter 121 to increase the output of reactive power (step S104).

  Thereafter, the voltage sensor 122 detects the voltage value of the power receiving point 80 again (step S101), and the voltage value of the power receiving point 80 is reduced to a predetermined value by increasing the output of the reactive power, that is, the control unit 212. However, when it is determined that the voltage value at the power receiving point 80 does not deviate from the upper limit value (No in step S102), the control unit 212 causes the inverter to continue the output of the active power and the reactive power after the reactive power is increased. A command is issued to 121 (step S106).

  If it is determined that the voltage value at power receiving point 80 still deviates from the upper limit value (Yes in step S102), control unit 212 continues the process of determining the power factor of the output of inverter 121. (Step S103). If the power factor has not reached the lower limit (No in step S103), the control unit 212 performs a process of further increasing the reactive power output (step S104).

  If the control unit 212 determines that the power factor of the output of the inverter 121 has reached the lower limit value (Yes in step S103), the control unit 212 returns to the grid among the power supplied from the DC power supply 110. A command is issued to inverter 121 to reduce the amount of active power flowing (step S105). Then, the voltage sensor 122 continues the voltage value detection process at the power receiving point 80 (step S101), and the determination as to whether or not the voltage value falls within the specified value is repeated (step S102).

  As described above, the distributed power supply 100 according to the embodiment of the present invention controls the active power amount and reactive power amount supplied to the system so that the voltage value of the system does not exceed the upper limit value. Thereby, the distributed power supply 100 can contribute to stabilization of the voltage value of a system | strain.

  In this embodiment, 107V defined in Article 44 of the Enforcement Regulations of the Electricity Business Act of Japan was used as a voltage threshold (upper limit value) for starting supply of reactive power and suppression of active power when the voltage rises. . On the other hand, the voltage threshold value is not limited to 107V, and an arbitrary value can be set. For example, the control may be started when the voltage threshold value reaches 106V. In addition, the threshold value is not uniformly set for all distributed power sources, but is set to a different value depending on various conditions, for example, the threshold value is changed according to the distance from the substation or the transformer as in Patent Document 2. It is also possible.

  Moreover, the method of stabilizing a system | strain is not restricted to the method shown in FIG. The voltage of the system may be stabilized by controlling the active power amount and reactive power amount output from the distributed power source 100 by another method.

  Next, the configuration of the fee management apparatus 300 will be described with reference to FIG. FIG. 5 is a block diagram showing an example of the configuration of the fee management apparatus 300 according to the embodiment of the present invention. The charge management device 300 calculates the value of the power supplied to the system among the power (power generation amount) generated by the plurality of distributed power sources 100 for each distributed power source 100 (for each customer 60). As shown in FIG. 5, the fee management apparatus 300 includes an electric energy acquisition unit 310, a total calculation unit 320, and a fee calculation unit 330.

  The power amount acquisition unit 310 acquires the power generation amount for each distributed power source 100. Moreover, the electric energy acquisition part 310 may acquire the active electric energy and the reactive electric energy for every distributed power supply 100 among the electric power supplied to the system | strain.

  The total calculation unit 320 calculates the total power generation amount that is the total power generation amount for each distributed power source 100. For example, when N distributed power sources 100 are connected to one low-voltage distribution line 40, the total calculation unit 320 adds the respective power generation amounts of the N distributed power sources 100 to obtain the total power generation amount. Is calculated. In addition, the total calculation unit 320 may calculate the total active power amount that is the sum of the active power amounts for each distributed power source 100 and the total reactive power amount that is the sum of the reactive power amounts for each distributed power source 100. Good.

  The charge calculation unit 330 distributes the total revenue obtained from the power supplied to the system by the plurality of distributed power sources 100 according to the power generation amount ratio that is the ratio of the power generation amount of the distributed power source 100 to the total power generation amount. The price for each distributed power source 100 is calculated. The total profit is the total consideration for each customer 60 (distributed power supply 100) for the power supplied to the grid. Specifically, the total revenue is the total amount of money paid to the customer 60 (distributed power supply 100) from the power company by supplying power to the grid, that is, by selling power to the power company or the like. . For example, the total profit is calculated based on the active power amount supplied to the system by the plurality of distributed power sources 100, that is, the total active power amount.

  Specifically, the fee calculation unit 330 calculates total revenue by multiplying the total active power amount calculated by the total calculation unit 320 by the unit price of active power according to the equation (1). In addition, the charge calculation unit 330 calculates the power generation amount ratio for each distributed power source 100 according to the formula (2), and calculates the consideration for each distributed power source 100 by multiplying the calculated total revenue and the power generation amount ratio. To do.

(Formula 1)
Total revenue = total active power x active power unit price (Formula 2)
Consideration for each distributed power source = total revenue x (power generation per distributed power source ÷ total power generation)

  Further, the charge calculation unit 330 calculates the ratio of the total active power amount to the total power generation amount according to the equation (3), and calculates the calculated ratio, the power generation amount for each distributed power source 100, and the unit price of the active power amount. The value for each distributed power source 100 may be calculated by multiplication.

(Formula 3)
Consideration for each distributed power source = (total active power amount ÷ total power generation amount) × power generation amount for each distributed power source × active power unit price

  In the embodiment of the present invention, an example in which one distributed power source is installed in one consumer will be described. Therefore, the price for each distributed power source is equal to the price for each customer. When a plurality of distributed power sources are installed in one consumer, the total consideration for each of the plurality of distributed power sources matches the consideration of one consumer.

  Next, an example of a detailed configuration of the fee management apparatus 300 according to the embodiment of the present invention will be described. FIG. 6 is a block diagram showing an example of a detailed configuration of the fee management apparatus 300 according to the embodiment of the present invention.

  The charge management apparatus 300 according to the embodiment of the present invention collects data regarding the power generation amount transmitted from each distributed power source 100 and the amount of active power supplied to the system, and all the distributed power sources 100 supplied to the system. It has a function of calculating the amount of money allocated to each consumer 60 who owns each distributed power source 100 with respect to the profit obtained from the amount of active power.

  As shown in FIG. 5, the charge management apparatus 300 shown in FIG. 6 includes a power amount acquisition unit 310, a total calculation unit 320, and a charge calculation unit 330. The power amount acquisition unit 310 includes a communication interface 311, a data transmission / reception unit 312, and a data storage unit 313.

  The communication interface 311 is an interface for performing various types of communication such as power line communication, optical communication, and other wireless communication.

  The data transmission / reception unit 312 receives data related to the amount of power generated from each distributed power source 100, the amount of active power that has been reversely flowed, the amount of reactive power supplied to the system, and the like. Further, the data transmission / reception unit 312 has a function of transmitting, to each distributed power source 100, information related to the amount (consideration) allocated to each customer 60 calculated by the fee calculation unit 330 based on the collected data.

  The data storage unit 313 is a memory or the like that can store information related to the power from each distributed power source 100 received by the data transmission / reception unit 312.

  FIG. 7 is a diagram illustrating an example of data stored in the data storage unit 313. As shown in FIG. 7, the power generation amount [kWh] generated by the DC power source 110 in the distributed power source 100 and the effective power amount [kWh] subjected to reverse power flow are supplied to the data storage unit 313 for each customer 60. Data relating to the reactive power amount [kVarh] and the power factor of the output of the inverter 121 are stored. For example, the data is described in a format in which a cumulative value of each electric energy in a predetermined period (for example, one day, one week, one month) can be calculated.

  As described above, the total calculation unit 320 calculates the total power generation amount, the total active power amount, and the total reactive power amount. The calculated total power generation amount, total active power amount, and total reactive power amount may be stored in the data storage unit 313, for example.

  When a predetermined date (a date for determining the price of power sale, for example, at the end of the month) is reached, the charge calculation unit 330 uses the reverse flow of active power (power sale) based on the information stored in the data storage unit 313. A process for allocating the obtained total profit to each consumer 60 is performed. That is, the charge calculation unit 330 determines the price for the power sale for each customer 60.

  Hereinafter, the operation of the fee management apparatus 300 according to the embodiment of the present invention will be described with reference to the flowchart of FIG. FIG. 8 is a flowchart showing an example of the operation of the fee management apparatus 300 according to the embodiment of the present invention.

  First, the data transmitting / receiving unit 312 acquires power amount information from each of the distributed power sources 100 via the communication interface 311 (step S201). Then, the data transmission / reception unit 312 stores the acquired power amount information in the data storage unit 313. For example, as shown in FIG. 7, the data storage unit 313 stores a table in which a power generation amount, an active power amount, a reactive power amount, and a power factor are associated with each customer.

  Next, the total calculation unit 320, when a predetermined charge calculation date is reached (Yes in step S <b> 202), is the total power generation that is the total power generation amount of each distributed power source 100 stored in the data storage unit 313. The amount is calculated (step S203). Specifically, in the example shown in FIG. 7, the power generation amount of the customer 1 is 13 kWh, the power generation amount of the customer 2 is 8 kWh, etc., and the total power generation amount of all the consumers, that is, the total power generation amount is 100 kWh. It shows that there was.

  Next, the total calculation unit 320 sums the total amount of active power (total effective power amount) that each distributed power source 100 has flowed back to the grid, that is, the total amount of power actually sold to the power company (total amount of power sold). ) Is calculated (step S204). In the example shown in FIG. 7, the total active power amount is 80 kWh.

  Then, the charge calculation unit 330 calculates the ratio between the total power generation amount and the total active power amount, that is, the ratio of the total power sales amount in the total power generation amount (step S205). In the example shown in FIG. 7, since the total power generation amount is 100 kWh and the total electric power sales power is 80 kWh, 0.8 is calculated as the ratio. The calculated ratio indicates how much power was actually sold out of the amount of power (total power generation) that was originally available for power sale.

  Next, the fee calculation unit 330 refers to the data storage unit 313 and extracts one piece of customer data (step S206). First, the case where the data of the consumer 1 is taken out is assumed. The fee calculation unit 330 calculates the price for selling power of the customer 1 (step S207).

  Specifically, the charge calculation unit 330 adds 13 kWh, which is the amount of power generated by the customer 1, to 0.8 kW, which is the amount of power sold, and the unit price of power sold per kWh (here, valid) Power unit price). Here, if the power selling unit price is 50 yen / kWh, the multiplication result is 520 yen.

  And the charge calculation part 330 determines whether the calculation of all the consumers in the data memory | storage part 313 was made (step S208), and if there is an uncalculated consumer (No in step S208), Data of customer 2 as the next consumer is extracted (step S206). Then, the charge calculation unit 330 performs the same calculation, so that the multiplication result of the customer 2 is 8 kWh × 0.8 × 50 yen / kWh = 320 yen (step S209). If the calculation is completed for all consumers (Yes in step S208), the process is terminated.

  As described above, the fee management apparatus 300 according to the embodiment of the present invention distributes the total total revenue according to the amount of power generation for each consumer. Specifically, the charge calculation unit 330 calculates the ratio of the total active power amount to the total power generation amount, and multiplies the calculated ratio, the power generation amount for each consumer, and the unit price of the active power amount to obtain the demand. Calculate the consideration for each house.

As another calculation method, the following can be considered.
First, the fee calculation unit 330 calculates the amount of resources for revenue distribution, that is, the total revenue. This is calculated to be 4000 yen by multiplying 80 kWh, which is the total amount of power sold by all consumers, by a power selling unit price of 50 yen / kWh. Next, the total calculation unit 320 calculates the total power generation amount that is the sum of the power generation amounts of all consumers according to the equation (1). In the example shown in FIG. 7, the total power generation amount is 100 kWh.

  Then, the charge calculation unit 330 calculates a power generation amount ratio that is a ratio of the power generation amount for each customer to the total power generation amount according to the formula (2), and multiplies the calculated power generation amount ratio by the total revenue. Consideration for each customer is calculated. In the example shown in FIG. 7, the amount allocated to the customer 1 is 4000 yen × (13 kWh ÷ 100 kWh) = 520 yen using the power generation amount of the customer 1, which is 520 yen. On the other hand, it is calculated as 4000 yen × (8 kWh ÷ 100 kWh) = 320 yen.

  Regardless of the calculation method, the amount of money allocated is the same, and the amount is determined based on the relationship between the amount of power generated (the amount of power that was originally available for power sale) and the amount of power actually sold. The point that it is done is common.

  Here, a conventional method for determining the amount of power sold based on the amount of active power (the amount of power actually sold) that each consumer has flowed back into the grid will be described.

  When adopting a method of determining the amount of power sold received by the customer 1 and the customer 2 based on the active power amounts of the customer 1 and the customer 2, the customer 1 is 7 kWh × 50 yen / kWh = 350. Yen and customer 2 are 8 kWh × 50 yen / kWh = 400 yen.

  The distributed power source possessed by the customer 1 generates 13 kWh of power and can originally sell 13 kWh, and the amount of power generated by the distributed power source of the customer 2 is larger than 8 kWh. However, as a result of measures such as suppression of active power output and supply of reactive power due to measures against an increase in the voltage value at the power receiving point, the amount of power sold by the customer 1 is greatly suppressed relative to the amount of power generation, As a result, a situation occurs in which the amount of power sold is less than that of the customer 2. Such differences in the amount of suppression of active power output and the amount of reactive power supplied by each customer are caused by the location of the distributed power supply that the customer has, and are therefore unfair regardless of the customer's responsibility. A situation will occur.

  On the other hand, the charge management apparatus 300 according to the embodiment of the present invention performs a plurality of distributions constituting the distribution system after performing necessary measures such as effective power output suppression for voltage stabilization and supply of reactive power. Calculate the source of revenue (total revenue) from the amount of power sold by the type power source, and distribute the calculated total revenue based on the amount of power generated by the distributed power source owned by the customer (original amount of power available) Therefore, it is possible to realize a system that achieves both stable power distribution and fair profits.

  As described above, the fee management apparatus 300 according to the embodiment of the present invention acquires the amount of power generation and the amount of power supplied to the system from each of the plurality of distributed power sources 100, and supplies the system to all the distributed power sources 100. The total profit for the power supply is distributed according to the power generation amount for each distributed power source 100. As a result, a large amount of consideration is distributed to distributed power sources with a large amount of power generation, and a small amount of consideration is distributed to distributed power sources with a small amount of power generation.

  Therefore, even when a certain distributed power source 100 generates a large amount of power, even when the effective power actually supplied to the system is controlled in order to stabilize the voltage value of the system. The fee management apparatus 300 according to the embodiment of the present invention determines the price according to the amount of power generation that should have been originally supplied to the system, and therefore can reduce unfairness for each distributed power source.

  In addition, the power amount information transmission apparatus 200 according to the embodiment of the present invention acquires the power generation amount by the distributed power source 100 and the power amount supplied to the system, and generates power amount information indicating the power generation amount and the power amount. Then, the generated power amount information is transmitted to the charge management device 300. Thereby, since the charge management apparatus 300 can easily acquire the power generation amount and the power amount for each distributed power source, it is possible to easily calculate the total revenue and the price for each distributed power source. it can.

  As described above, according to the present invention, even if an unfairness occurs in the suppression of the amount of electric power sold or the amount of reactive power supplied due to the installation conditions such as the installation position of the distributed power source, the profit obtained by the electric power sale is Since each distributed power source is distributed based on the amount of power that can be sold, it is possible to achieve both stabilization of the distribution system such as voltage value and fairness of profit.

  As mentioned above, although the electric energy information transmission apparatus 200, the charge management apparatus 300, and these methods in embodiment of this invention were demonstrated based on embodiment, this invention is limited to these embodiment. is not. Unless it deviates from the meaning of this invention, the form which carried out the various deformation | transformation which those skilled in the art can think to the said embodiment, and the form constructed | assembled combining the component in a different embodiment is also contained in the scope of the present invention. .

  For example, in the embodiment of the present invention, the method of allocating revenue based on the power generation amount of each distributed power source and the active power amount (power sales amount) flowing backward to the grid has been described. The consideration for each distributed power source can be determined in consideration of the reactive power amount. A specific example will be described using the data shown in FIG.

  First, the resources to be allocated to each distributed power source, that is, the total revenue, is the total of the revenues generated by selling each of the distributed power sources. Similarly, it is 4000 yen. This total profit is divided into contributions from active power and contributions from reactive power. The dividing method can be defined as, for example, the following expressions (4) to (6).

(Formula 4)
Revenue = C_P + C_Q
(Formula 5)
C_P = Revenue × {P ÷ (P + αQ)}
(Formula 6)
C_Q = Revenue × {αQ ÷ (P + αQ)}
However,
C_P: Contribution level due to reverse power flow of active power in total revenue C_Q: Contribution level due to reactive power supply in total revenue Revenue: Total revenue P: Total amount of active power flowing back to the system from distributed power source Q: Distributed Total amount of reactive power supplied by the type power supply α: Coefficient to correct the weight of active power and reactive power

  Here, if the value of α is “1”, the contribution degree C_P by the active power is 4000 × {80 ÷ (80 + 25)} = 3048 yen according to the equation (4). The contribution degree C_Q due to reactive power is 4000 × {25 ÷ (80 + 25)} = 952 yen.

  Using these as resources, distribution according to the amount of active power and reactive power output by each consumer is performed. Specifically, the fee calculation unit 330 calculates the consideration for each customer according to the equation (2). At this time, “total profit” in Expression (2) is “contribution degree C_P by active power”.

  For example, according to the formula (2), the customer 1 is “C_P3048 yen × (power generation amount 13 kWh ÷ total power generation amount 100 kWh) = 396 yen”, and the customer 2 is “C_P3048 yen × (power generation amount 8 kWh ÷ total power generation amount 100 kWh). ) = 244 yen ”.

  On the other hand, the amount allocated by reactive power supply of each consumer is calculated based on the reactive power burden ratio of each consumer, with C_Q = 952 yen as a contribution due to reactive power. For example, since the customer 1 bears 4 kVarh out of the total reactive power supply amount 25 kVarh, “952 yen × (4 kVarh ÷ 25 kVarh) = 152 yen”, and the customer 2 does not bear 0 yen. The customer 3 is similarly calculated as “952 yen × (5 kVar ÷ 25 kVar) = 190 yen”.

  As a result, the amount of money obtained by the customer 1 is 548 yen, which is a total of 396 yen for the active power and 152 yen for the reactive power. Similarly, the distribution amount obtained by the customer 2 is 243 yen, which is the sum of 243 yen for the active power and 0 yen for the reactive power.

  Regarding the distribution of active power, a calculation formula similar to the method of distributing based on the above-described active power amount alone may be used. That is, the charge calculation unit 330 may calculate the consideration for each consumer according to the equation (3). However, the “unit price of active power” in Equation (3) is 38 yen / kWh (therefore, reactive power) by multiplying the unit price of electric power sold (unit price of active power) 50 yen / kWh by a contribution of 0.76 due to active power. Will contribute 12 yen / kVarh).

  For example, according to the formula (3), the allocation amount based on the active power of each consumer is “the unit price of power sale 38 yen / kWh × the amount of power generation 13 kWh × 0.8 = 395 yen” and the consumer 2 “ It is calculated as “Unit price of electric power sales 38 yen / kWh × power generation amount 8 kWh × 0.8 = 243 yen”. Here, 0.8 is the total active power amount 80 kWh with respect to the total power generation amount 100 kWh. Note that the result of the expression (2) is different from the result of the expression (3) because it is calculated by rounding down or rounding off the decimal point.

  In this embodiment, α, which is a weight ratio between active power and reactive power, is calculated as “1”, that is, the weights of active power 1 kWh and reactive power 1 kVar are equal. It is possible to apply to various cases by setting a value smaller than 1 when increasing, and setting a value larger than 1 when increasing the reactive power weight.

  In the present embodiment, the case where each distributed power source has a reverse flow of active power, that is, the price for selling power, has been described as the source of charges allocated to each consumer. For example, consideration paid for the amount of reactive power output by each distributed power source can be considered. In other words, the distributed power source, which is a component of the distribution system, targets the selling price obtained by supplying active power, and the price that contributes to stabilizing the system voltage by suppressing active power and supplying reactive power. If it is.

  For example, it is assumed that revenue is obtained according to the amount of reactive power supplied to the grid. That is, the profit from the reactive power amount is calculated by multiplying the supplied reactive power amount by the unit price of the reactive power amount (for example, 10 yen / 1 kVarh).

  The total revenue distributed to each consumer is calculated as the sum of the revenue from the active power amount and the revenue from the reactive power amount. In the example illustrated in FIG. 7, the charge calculation unit 330 calculates total revenue = 80 kWh × 50 yen / kWh + 25 kVarh × 10 yen / kVarh = 4250 yen. And the charge calculation part 330 calculates the consideration for every consumer according to Formula (2) (and Formula (4)-Formula (6)) etc. which were mentioned above. For example, the customer 1 is “4250 yen × (13 kWh ÷ 100 kWh) = 552 yen”.

  Moreover, the charge calculation unit 330 can calculate the consideration for each consumer without directly calculating the total profit as shown in the equation (3). In this case, the fee calculation unit 330 calculates the consideration according to, for example, the equation (7).

(Formula 7)
Consideration for each distributed power source = {(total active power amount ÷ total power generation amount) × active power unit price + (total reactive power amount ÷ total power generation amount) × reactive power unit price} × power generation amount of distributed power source

  When calculated according to the equation (7), the customer 1 is “{(80 kWh ÷ 100 kWh) × 50 yen / kWh + (25 kWarh ÷ 100 kWh) × 10 yen / kVarh} × 13 kWh = 552 yen”.

  In the present embodiment, as an example, the DC power supply 110 generates power with maximum efficiency, and the control unit 212 controls the output of the inverter 121 to control the amount of power supplied to the system. did. On the other hand, the control unit 212 may control the output of the DC power supply 110.

  FIG. 9 is a diagram illustrating an example of the configuration of the distributed power source 100 according to a modification of the embodiment of the present invention. 9 is different from the distributed power source 100 shown in FIG. 3 in that a power amount information transmitting device 400 is provided instead of the power amount information transmitting device 200. Specifically, the difference is that a power amount acquisition unit 410 is provided instead of the power amount acquisition unit 210.

The power amount acquisition unit 410 includes a power generation amount acquisition unit 411 and a control unit 412.
The controller 412 reduces the DC power supplied to the inverter 121 by reducing the power generation efficiency of the DC power supply 110. As a result, it is possible to reduce the AC power output from the inverter 121 as a result, preventing the voltage value at the power receiving point 80 from exceeding the threshold value, and enabling stable power supply. it can.

  At this time, when the distributed power source 100 suppresses the power generation amount, the power generation amount acquisition unit 411 acquires the power generation amount that can be generated when the distributed power source 100 does not suppress the power generation amount as the power generation amount by the distributed power source 100. Specifically, the power generation amount acquisition unit 411 determines the maximum power generation amount (potential power generation amount) that the DC power source 110 can generate without being controlled by the control unit 212 from the DC power source 110. get. Then, the transmission unit 220 transmits the potential power generation amount acquired by the power amount acquisition unit 410 to the fee management apparatus 300 as the power generation amount used for the calculation of the price.

  As a result, even if the output from the DC power supply 110 is reduced, it is possible to distribute the amount of power sales based on the amount of power that could be output originally. Can calculate the price without injustice.

  As described above, the present invention can be realized not only as a charge management device, a power amount information transmission device, a charge management method, and a power amount information transmission device, but also as a charge management method and power amount information according to the present embodiment. You may implement | achieve as a program for making a computer perform the transmission method. Moreover, you may implement | achieve as recording media, such as computer-readable CD-ROM which records the said program. Furthermore, it may be realized as information, data, or a signal indicating the program. These programs, information, data, and signals may be distributed via a communication network such as the Internet.

  The present invention can also be realized as a fee management system including the fee management device 300 and the power amount information transmission device 200 described above.

  In the present invention, some or all of the components constituting the charge management device or the electric energy information transmitting device may be configured from one system LSI. The system LSI is an ultra-multifunctional LSI manufactured by integrating a plurality of components on a single chip. Specifically, the system LSI is a computer system including a microprocessor, a ROM, a RAM, and the like. .

  The present invention has the effect that, for the power supplied from the distributed power source to the system, the fee paid as a contribution to the power supply / demand balance and voltage stabilization can be distributed fairly to each distributed power source. For example, it can be used for a charge management device and a charge management system for determining the amount of power sale.

DESCRIPTION OF SYMBOLS 10 Substation 20 High voltage distribution line 30 Transformer 40 Low voltage distribution line 50 Lead-in line 60 Customer 70 Communication line 80 Power receiving point 90 Load 100 Distributed power supply 110 DC power supply 120 Power control part 121 Inverter 122 Voltage sensor 130, 311 Communication interface 200 , 400 Electricity amount information transmission device 210, 310, 410 Electricity amount acquisition unit 211 Electric power generation amount sensor 212, 412 Control unit 220 Transmission unit 221 Data processing unit 300 Charge management device 312 Data transmission / reception unit 313 Data storage unit 320 Total calculation unit 330 Fee Calculation unit 411 Power generation amount acquisition unit

Claims (17)

A charge management device that calculates the value of power supplied to a system among power generated by a plurality of distributed power sources, for each of the distributed power sources,
An electric energy acquisition unit that acquires an electric power generation amount for each of the distributed power sources;
A total calculation unit for calculating a total power generation amount that is a total power generation amount for each of the distributed power sources;
The distributed power source is distributed by distributing the total profit obtained from the power supplied to the system by the plurality of distributed power sources in accordance with a power generation amount ratio that is a ratio of the power generation amount of the distributed power source to the total power generation amount. A charge management device comprising a charge calculation unit for calculating a consideration for each. The power amount acquisition unit further acquires an active power amount for each distributed power source among the power supplied to the grid,
The total calculation unit further calculates a total active power amount that is a sum of active power amounts for each of the distributed power sources,
The charge calculation unit calculates the total revenue by multiplying the total active power amount and the unit price of the active power amount, calculates the power generation amount ratio for each of the distributed power sources, The charge management apparatus according to claim 1, wherein the price for each distributed power source is calculated by multiplying the calculated power generation amount ratio. The power amount acquisition unit further acquires a reactive power amount for each distributed power source among the power supplied to the grid,
The total calculation unit further calculates a total reactive power amount that is a total reactive power amount for each of the distributed power sources,
The fee calculation unit distributes a part of the total revenue according to the power generation amount ratio, and another part of the total revenue is a reactive power amount for each distributed power source with respect to the total reactive power amount. The charge management apparatus according to claim 2, wherein the price for each distributed power source is calculated by distributing the power according to the ratio of the power supply. The charge calculation unit further calculates a part of the total revenue by multiplying the total revenue by a ratio of the total active power amount to a total of the total active power amount and the total reactive power amount, The charge management apparatus according to claim 3, wherein another part of the total revenue is calculated by multiplying the total revenue by a ratio of the total reactive power amount to a total of the total active power amount and the total reactive power amount. The charge calculation unit further calculates a part of the total revenue and the other part using the value calculated by multiplying the total reactive power amount by a predetermined weighting factor as the total reactive power amount. Item 5. Charge management device according to item 4. The fee management apparatus according to any one of claims 1 to 5, wherein the total revenue includes revenue obtained from active power supplied to the system by the plurality of distributed power sources and revenue obtained from reactive power. The power amount acquisition unit further acquires an active power amount for each distributed power source among the power supplied to the grid,
The total calculation unit further calculates a total active power amount that is a sum of active power amounts for each of the distributed power sources,
The charge calculation unit calculates the ratio of the total active power amount to the total power generation amount, and multiplies the calculated ratio, the power generation amount for each of the distributed power sources, and the unit price of the active power amount, thereby calculating the variance. The charge management device according to claim 1, wherein the price for each power source is calculated. The power amount acquisition unit acquires, when the distributed power source suppresses the power generation amount, a power generation amount that can be generated when the distributed power source does not suppress the power generation amount as the power generation amount by the distributed power source. The charge management device according to item. A power amount acquisition unit for acquiring a power generation amount by the distributed power source and a power amount supplied to the system by the distributed power source;
A power amount information transmission device comprising: a transmission unit that generates power amount information indicating the power generation amount and the power amount, and transmits the generated power amount information to a predetermined management device. The power amount information transmitting apparatus according to claim 9, wherein the power amount acquisition unit acquires the effective power amount supplied to the system by the distributed power source as the power amount. The power amount information transmitting apparatus according to claim 10, wherein the power amount acquisition unit further acquires a reactive power amount supplied to the system by the distributed power source as the power amount. The power amount acquisition unit acquires, when the distributed power source suppresses the power generation amount, the power generation amount that can be generated when the distributed power source does not suppress the power generation amount as the power generation amount by the distributed power source. The electric energy information transmitting device according to the item. A charge management system that calculates the price of power supplied to a system among power generated by a plurality of distributed power sources for each of the distributed power sources,
A plurality of power amount information transmitting devices that are provided in each of the plurality of distributed power sources and transmit power amount information;
A charge management device that calculates a price for each distributed power source based on the power amount information transmitted from the plurality of power amount information transmitting devices;
Each of the plurality of power amount information transmission devices includes:
A power amount acquisition unit for acquiring a power generation amount by a corresponding distributed power source and a power amount supplied to the system by the corresponding distributed power source;
A power transmission unit that generates the power amount information indicating the power generation amount and the power amount, and transmits the generated power amount information to the charge management device;
The charge management device
A power amount information acquiring unit that acquires the power amount information from each of the plurality of power amount information transmitting devices;
A total calculation unit for calculating a total power generation amount that is a total power generation amount for each of the distributed power sources;
The distributed power source is distributed by distributing the total profit obtained from the power supplied to the system by the plurality of distributed power sources in accordance with a power generation amount ratio that is a ratio of the power generation amount of the distributed power source to the total power generation amount. A charge management system comprising a charge calculation unit for calculating the consideration for each. A charge management method for calculating, for each distributed power source, the price of power supplied to the grid among the power generated by a plurality of distributed power sources,
An amount of power acquisition step of acquiring a power generation amount for each of the distributed power sources;
A total calculation step of calculating a total power generation amount that is a total power generation amount for each of the distributed power sources;
The distributed power source is distributed by distributing the total profit obtained from the power supplied to the system by the plurality of distributed power sources in accordance with a power generation amount ratio that is a ratio of the power generation amount of the distributed power source to the total power generation amount. A charge management method including a charge calculation step of calculating a consideration for each. A power amount acquisition step of acquiring a power generation amount by the distributed power source and a power amount supplied to the system by the distributed power source;
A power amount information transmitting method, comprising: generating power amount information indicating the power generation amount and the power amount, and transmitting the generated power amount information to a predetermined management device. An integrated circuit that calculates the value of power supplied to a system among power generated by a plurality of distributed power sources, for each of the distributed power sources,
An electric energy acquisition unit that acquires an electric power generation amount for each of the distributed power sources;
A total calculation unit for calculating a total power generation amount that is a total power generation amount for each of the distributed power sources;
The distributed power source is distributed by distributing the total profit obtained from the power supplied to the system by the plurality of distributed power sources in accordance with a power generation amount ratio that is a ratio of the power generation amount of the distributed power source to the total power generation amount. An integrated circuit comprising a charge calculation unit for calculating a price for each. A power amount acquisition unit for acquiring a power generation amount by the distributed power source and a power amount supplied to the system by the distributed power source;
An integrated circuit comprising: a transmission unit that generates power amount information indicating the power generation amount and the power amount, and transmits the generated power amount information to a predetermined management device.

Images