JP7202928B2 - Power transmission control method, power transmission management system and program - Google Patents

Description

The present invention relates to a power transmission control method, a power transmission management system, and a program.

2. Description of the Related Art There is a technique for interchanging power from a customer in which a distributed power supply is installed to another customer without causing reverse flow of power to the power system of an electric utility (see Patent Document 1). At that time, the right to receive power that is less than the power that can be supplied by the distributed power source is transferred to other consumers of the interchange destination.
There is a technique of obtaining the total value of power consumption for each group including customers with distributed power sources and increasing or decreasing the power supply of the distributed power sources according to the total value of power consumption in the group (see Patent Document 2).

Patent No. 6246412 Patent No. 6303054

Distributed power sources are based on the premise that the entire amount of generated electricity is consumed at the place of installation. In particular, a cogeneration system that can also use heat during power generation has a higher overall energy efficiency (primary energy efficiency) than a system that only generates power.
However, if the demand at the site of installation is less than the power output of the distributed power supply, it is necessary to lower the power output. In that case, there is also a method of reverse-flowing surplus power without controlling the power generation output and having the power company buy it.

In the case of a consumer who owns a factory, etc. in addition to the installation site, the surplus power generated by distributed power sources can be used by the same consumer in another location by using the power transmission and distribution network of a general electric utility. It is possible to transmit power to factories, etc. Such power transmission is called self-consignment.
Currently, most self-consignment systems are used for the purpose of transmitting excess power demand (that is, surplus power) to another factory or the like. For this reason, utilization by consumers who do not have factories or the like where distributed power sources are installed has not progressed. In addition, most of the current self-consignment aims at effective use of surplus power.

An object of the present invention is to control the amount of power generated by a private power generation facility according to the demand of a customer who uses an electric power interchange service, and to transmit the generated electricity to the corresponding customer via the power system.

The invention according to claim 1 is a power transmission control method executed by a terminal connected to a communication network, wherein each consumer using a power interchange service individually predicts the amount of electricity received from the power system. and a process of controlling the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity , wherein the private power generation equipment generates electric power When shared by multiple consumers who use the interchange service, control the amount of electricity generated by the in-house power generation equipment within a range that satisfies the predetermined distribution ratio of each consumer among the multiple consumers, and , is a power transmission control method in which the distribution ratio is changed in units of a predetermined time .
The invention according to claim 2 is a power transmission control method executed by a terminal connected to a communication network, wherein each consumer using the power interchange service individually predicts the amount of electricity received from the power system. and a process of controlling the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity, wherein the private power generation equipment generates electric power When multiple consumers using the interchange service share the electricity, even if the amount of electricity predicted for a certain consumer exceeds the amount of electricity determined by the predetermined distribution ratio among the plurality of consumers, In this power transmission control method, when there is surplus power generation that can be distributed, the in-house power generation equipment is instructed to generate power corresponding to the surplus power, and the surplus power is allocated to consumers who are short of received power.
The invention according to claim 3 is a power transmission control method executed by a terminal connected to a communication network, wherein each consumer using the power interchange service predicts the amount of electricity received from the power system individually. and a process of controlling the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity, wherein the private power generation equipment generates electric power This power transmission control method changes the combination of the plurality of consumers according to time when the power transmission is shared by the plurality of consumers using the interchange service.
The invention according to claim 4 includes a prediction unit that individually predicts the amount of electricity received from the power system by each consumer using the power interchange service, and a control unit for controlling the amount of electricity to be transmitted to the power supply according to the predicted amount of electricity , wherein the control unit is shared by a plurality of consumers who use the power interchange service for the private power generation equipment In this case, the amount of electricity generated by the in-house power generation equipment is controlled within a range that satisfies the predetermined distribution ratio of each consumer among the plurality of consumers, and the distribution ratio is changed in predetermined time units. It is a power transmission management system that allows
The invention according to claim 5 comprises a prediction unit that individually predicts the amount of electricity received from the power system by each customer using the power interchange service, and a control unit for controlling the amount of electricity to be transmitted to the power supply according to the predicted amount of electricity, wherein the control unit is shared by a plurality of consumers who use the power interchange service for the private power generation equipment and if there is surplus power generation that can be distributed even if the amount of electricity predicted for a certain consumer is greater than the amount of power determined by the distribution ratio, instruct the private power generation equipment to generate the surplus power and , is a power transmission management system that allocates surplus power to consumers who are short of received power.
The invention according to claim 6 comprises a prediction unit that individually predicts the amount of electricity received from the power system by each consumer using the power interchange service, and a control unit for controlling the amount of electricity to be transmitted to the power supply according to the predicted amount of electricity, wherein the control unit is shared by a plurality of consumers who use the power interchange service for the private power generation equipment This is a power transmission management system that changes the combination of the plurality of consumers according to time when there is a demand.
According to a seventh aspect of the invention, a terminal connected to a communication network has a function of individually predicting the amount of electricity received from the electric power system by each customer using the power interchange service, and A function to control the amount of electricity generated by the power generation facility and transmitted to the power system according to the predicted amount of electricity, and the private power generation facility is shared by multiple consumers who use the power interchange service. In this case, the amount of electricity generated by the in-house power generation equipment is controlled within a range that satisfies the predetermined distribution ratio of each consumer among the plurality of consumers, and the distribution ratio is changed in predetermined time units. It is a program for realizing functions .
According to an eighth aspect of the invention, a terminal connected to a communication network has a function of individually predicting the amount of electricity received from the electric power system by each customer who uses the power interchange service, and A function to control the amount of electricity generated by the power generation facility and transmitted to the power system according to the predicted amount of electricity, and the private power generation facility is shared by multiple consumers who use the power interchange service. In this case, even if the amount of electricity predicted for a certain consumer exceeds the amount of electricity determined by the predetermined distribution ratio among the multiple consumers, if there is surplus power generation that can be distributed, the surplus power It is a program for realizing a function of instructing the private power generation equipment to generate power and allocating surplus power to consumers who are short of received power.
According to a ninth aspect of the invention, a terminal connected to a communication network has a function of individually predicting the amount of electricity received from the electric power system by each customer using the power interchange service, and A function to control the amount of electricity generated by the power generation facility and transmitted to the power system according to the predicted amount of electricity, and the private power generation facility is shared by multiple consumers who use the power interchange service. and a function of changing the combination of the plurality of consumers according to time.

According to the first aspect of the invention, it is possible to cope with fluctuations in demand of each customer .
According to the second aspect of the invention, it is possible to cope with fluctuations in demand of each consumer within the range of surplus capacity.
According to the third aspect of the invention, it is possible to cope with fluctuations in the combination of consumers.
According to the fourth aspect of the invention, it is possible to cope with fluctuations in demand of each customer .
According to the fifth aspect of the invention, it is possible to cope with fluctuations in demand of each consumer within the range of surplus capacity.
According to the sixth aspect of the invention, it is possible to cope with fluctuations in the combination of consumers.
According to the seventh aspect of the invention, it is possible to cope with fluctuations in demand of each customer.
According to the eighth aspect of the invention, it is possible to cope with fluctuations in demand of each consumer within the range of surplus capacity.
According to the ninth aspect of the invention, it is possible to cope with fluctuations in the combination of consumers.

FIG. 2 is a diagram illustrating a form of use of power interchange service assumed in Embodiment 1; FIG. 1 is a diagram showing a configuration example of a power system assumed in Embodiment 1; FIG. 3 is a diagram showing a functional configuration of a management server used in Embodiment 1; FIG. FIG. 5 is a diagram showing an example of power reception record data of a customer; 4 is a diagram showing an example data structure of a power generation database used in Embodiment 1. FIG. 4 is a diagram showing an example data structure of a charge management database used in the first embodiment; FIG. FIG. 4 is a diagram showing an example of processing operations performed in the power system shown in Embodiment 1; FIG. 10 is a diagram for explaining a usage form of a power interchange service assumed in Embodiment 2; FIG. FIG. 10 is a diagram showing a configuration example of a power system assumed in Embodiment 2; FIG. FIG. 10 is a diagram showing a functional configuration of a management server used in Embodiment 2; FIG. FIG. 4 is a diagram illustrating an example of distribution ratios predetermined among a plurality of consumers; FIG. 10 is a diagram showing an example of processing operations performed in the power system shown in Embodiment 2;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
<Usage form>
FIG. 1 is a diagram for explaining the mode of use of the power interchange service assumed in the first embodiment.
In the present embodiment, the total amount of electricity generated by one private power generation facility is distributed to one consumer who uses the electricity interchange service and is associated with the private power generation facility on a one-to-one basis. We assume a form of use in which power is transmitted to
In the case of FIG. 1, there are three users of the electricity interchange service: customer A, customer B, and customer C. Consumers A, B, and C may be individuals or businesses, and may be commercial or non-commercial. Further, the consumers A, B, and C are only common in that they are users of the electricity interchange service, and their capital relationships, business alliance relationships, personal relationships, and the like do not matter.

In the case of FIG. 1, one land 20 is divided into three sections 20A, 20B, and 20C, each of which has a private power generation facility 30A for consumer A, a private power generation facility 30B for consumer B, and a private power generation facility for consumer C. A power generation facility 30C is provided.
In the case of the present embodiment, the total amount of electricity generated by private power generation equipment 30A is transmitted to customer A's demand area 40A through power system 10 . The entire amount of electricity generated by private power generation equipment 30B is transmitted to demand area 40B of consumer B through power system 10 . The total amount of electricity generated by the private power generation equipment 30C is transmitted to the demand area 40C of the customer C through the power system 10.
The land 20 and the demand area 40A, the land 20 and the demand area 40B, and the land 20 and the demand area 40C are physically separated. It is assumed that the demand points 40A, 40B, and 40C exist in different places, but they may exist in different floors of the same building or in different sections of the same site, for example.

In the case of the present embodiment, the owners of the sections 20A, 20B, and 20C may be the consumers A, B, and C, respectively, but they do not necessarily have to be the owners. For example, the owner of the land 20 may be a power interchange service provider, a business entity that leases the land 20 to the power interchange service provider, or a third party such as an electricity retailer.
In the case of FIG. 1, one piece of land 20 is divided into three sections 20A, 20B, 20C, each of which is provided with private power generation equipment 30A, 30B, 30C, but the number of sections is not limited to three. For example, the number of divisions may be one, two, or four or more.
If the number of partitions is one, only one consumer is associated. In this case, the private power generators 30A, 30B, and 30C are arranged on different land 20, respectively. However, if a plurality of private power generators 30A, 30B, and 30C are installed on one piece of land 20, maintenance is required compared to the case where the multiple private power generators 30A, 30B, and 30C are installed in a distributed manner. Increase work efficiency.
Further, in the case of FIG. 1, one private power generation facility is provided for one consumer, but a plurality of private power generation facilities may be provided for one consumer.

In the case of the power interchange service according to the present embodiment, the private power generators 30A, 30B, and 30C provided in the sections 20A, 20B, and 20C are used exclusively for generating electricity received at the demand areas 40A, 40B, and 40C. is characterized by In other words, it is assumed that no power is consumed in the sections 20A, 20B, and 20C, or that even if it is consumed, it can be ignored.
The private power generators 30A, 30B, and 30C in the present embodiment include, for example, hydraulic power generators, thermal power generators, natural energy power generators, fuel cells, and the like. This kind of power supply is also called a distributed power supply. Also, the private power generators 30A, 30B, and 30C may be power storage systems that store generated power.
However, in the case of the present embodiment, it is assumed that the private power generators 30A, 30B, and 30C are power sources capable of controlling the amount of power generation. This type of power source includes, for example, a power source that generates power by burning fuel such as oil and gas. Further, this type of power source includes, for example, a power source that generates power through a reaction between a fuel such as hydrogen or alcohol and oxygen in the air. In other words, in the present embodiment, the private power generators 30A, 30B, and 30C use fuel-powered power sources capable of controlling the magnitude of power generation output regardless of the natural environment.

In the case of the present embodiment, the private power generators 30A, 30B, and 30C are managed as equipment for consumers A, B, and C who are users of the power interchange service during the contract period. The fees paid by consumers A, B, and C when using the power interchange service include, for example, the cost required to use the private power generation equipment 30A, 30B, and 30C, the cost required to maintain the private power generation equipment 30A, 30B, and 30C, and the cost required for power generation. It is calculated based on the fuel cost, the transmission cost for transmitting the generated electricity via the power system 10, and the like.
The costs required for using the private power generation equipment 30A, 30B, 30C include, for example, the rent for the sections 20A, 20B, 20C and the lease fee for the private power generation equipment 30A, 30B, 30C. However, not all of the above-mentioned expense items are necessarily described in the usage fee statement.
The power system 10 in this embodiment includes a power transmission and distribution network of a general electric utility. Specifically, power facilities such as transmission lines, distribution lines, service lines, and private lines are included.

<System configuration>
FIG. 2 is a diagram showing a configuration example of the electric power system 1 assumed in the first embodiment. In this embodiment, the customer A will be described for the sake of simplicity.
The power system 1 shown in FIG. 2 includes a power system 10, equipment on the side of the block 20A corresponding to the customer A, equipment on the side of the demand area 40A corresponding to the customer A, and the Internet 50 connecting these equipment. , and a management server 60 of a business operator that provides power interchange services.
In the case of FIG. 2, the section 20A is provided with a private power generation facility 30A, an electricity meter 31 that measures the amount of electricity transmitted to the demand area 40A, and a terminal 32 that communicates with the management server 60 via the Internet 50. there is The Internet 50 here is one form of a communication network.

The terminal 32 may be an access point, router, computer terminal, or the like that communicates with the private power generation facility 30A as an IoT (Internet of Things) device, the electricity meter 31, and the like.
The terminal 32 transmits information to the management server 60, such as the amount of electricity transmitted by reverse power to the power system 10, the amount of fuel consumed by the private power generation equipment 30A due to power generation, etc., and instructs from the management server 60 It has a function of controlling the private power generation equipment 30A so as to generate the generated electricity.
When power is generated using fuel, the amount of fuel used may be measured, the amount of power generation corresponding to the amount may be calculated in advance, and converted into the amount of power generation.

These functions are implemented, for example, by running embedded software or by running applications running on basic software. The terminal 32 in this embodiment has a configuration as a computer in addition to the functions necessary for communication. That is, the terminal 32 includes a CPU (Central Processing Unit) that controls the entire device through the execution of programs (including basic software), a ROM (Read Only Memory) that stores BIOS (Basic Input Output System) and the like, and a program It has a RAM (Random Access Memory) used as an execution area and a non-volatile storage device. A semiconductor memory or a hard disk device, for example, is used as the non-volatile storage device.

The electricity meter 31 is a wattmeter that measures the amount of electricity flowing back into the power system 10 . Electricity meter 31 may be a smart meter with built-in measurement and communication capabilities. If the electricity meter 31 is a smart meter, the electricity meter 31 may also function as the terminal 32 .
Section 20A is also provided with a meter (not shown) for measuring the flow rate of fuel (for example, gas) consumed by private power generation equipment 30A. From the measured flow rate, it is possible to calculate the amount of fuel consumed for power generation. The calculated amount of fuel is notified from the terminal 32 to the management server 60 .

A demand area 40A corresponding to the consumer A includes electricity using equipment 41 connected to the power system 10 through a power line, an electricity meter 42 for measuring the amount of power received from the power system 10, and a management server 60 through the Internet 50. A terminal 43 connected to the is installed.
The electricity-using device 41 here is any device that receives electricity through wiring laid in the demand area 40A. Electricity meter 42 is a wattmeter that measures the amount of electricity received from power system 10 . The electricity meter 42 may be a smart meter with built-in metering and communication capabilities.
The terminal 43 is an access point, router, computer terminal, or the like that communicates with the electricity-using device 41, the electricity meter 42, and other devices, and sends the amount of electricity measured by the electricity meter 42 (that is, the amount of received electricity) to the management server 60. It has a notification function. If the electricity meter 42 is a smart meter, the electricity meter 42 may also function as the terminal 43 .

The management server 60 predicts the power reception amount for the next prediction period based on the power reception performance data collected for the consumer A, and instructs the corresponding private power generation equipment 30A to generate electric power corresponding to the predicted power reception amount. It is a computer terminal that provides functions. The management server 60 here is an example of a power transmission management system.
In the case of the present embodiment, the management functions of the power transmission management system are integrated into a single management server 60, but some of the functions may be installed in the terminal 43 on the consumer A side, or the Internet 50 may be installed in other servers. That is, the management functions of the power transmission management system may be distributed among multiple terminals on the Internet.

In the case of the present embodiment, it is assumed that the managing entity of the management server 60 is a retail electricity supplier with which the consumer A has concluded a supply contract. However, the management entity of the management server 60 may be a business operator or an organization that provides power interchange services in cooperation with a retail electricity business operator or the like.
The management server 60 as a computer terminal includes a CPU that controls the entire apparatus through execution of programs (including basic software), a ROM that stores BIOS and the like, a RAM that is used as a program execution area, and a non-volatile memory. It has a hard disk device or the like as a device.

FIG. 3 is a diagram showing the functional configuration of the management server 60 used in the first embodiment.
The functional configuration shown in FIG. 3 is realized through execution of programs by the CPU. Note that the management server 60 does not need to be a device dedicated to the power interchange service management function.
As shown in FIG. 3 , the management server 60 includes a power reception performance acquisition unit 611 that acquires power reception performance data for each customer using the power interchange service, and a power reception performance acquisition unit 611 that acquires power reception performance data for each consumer in the next prediction period based on the power reception performance data. A received power amount prediction unit 612 that predicts the amount of electricity (that is, the amount of received power), and a power generation amount control unit 613 that controls the amount of power generated by the private power generation equipment 30A associated with the corresponding consumer based on the predicted amount of received power. , a usage charge calculation unit 614 for calculating the usage charge for each consumer, and the like.
Note that the management server 60 shown in FIG. 3 includes a power reception performance database (DB) 615 that stores power reception performance data acquired for each consumer, and power generation of the private power generation equipment 30A (see FIG. 1) corresponding to each consumer. A power generation database (DB) 616 for storing data used for control and a charge management database (DB) 617 for storing information necessary for calculating usage charges of each consumer are stored.

The power reception record acquisition unit 611 acquires the power reception record data of the consumer, who is the user of the electricity interchange service, from the terminal 43, the electricity retailer with which the consumer has a contract, or the like. If the electric power interchange service provider and the consumer have a contract with a different electricity retailer, etc., prior permission from the consumer is required for the utilization of power reception performance data by the electric interchange service provider.
FIG. 4 is a diagram showing an example of power reception performance data of the customer A. As shown in FIG. The horizontal axis is time, and the vertical axis is the amount of power received. In the case of the present embodiment, consumer A is a business operator who performs business-related work on weekdays, and has business hours from 9:00 to 18:00 and a lunch break from 12:00 to 13:00. It should be noted that the amount of power received outside business hours is much smaller than during business hours.
As shown in FIG. 4, the actual power reception data is provided as a total value for each predetermined time unit (for example, 30 minutes). The power reception performance data is not limited to weekdays, and may be acquired in periods such as holidays, weekly, monthly, quarterly periods, etc., in which the accuracy of the power reception amount prediction is enhanced. In addition, as the actual power reception data, information on the amount of power received by businesses of the same type or scale may be referred to. Furthermore, the amount of received power may be predicted from external factors such as weather. The power reception record data shown in FIG. 4 is stored in the power reception record database 615 .

Returning to the description of FIG.
The received power amount prediction unit 612 predicts the amount of power received by each consumer in the demand area based on the received power record data stored in the power reception record database 615 . The prediction period is, for example, the measurement period that starts after the current time. The predicted amount of received power is stored in a power generation database (DB) 616, for example.
The received power amount prediction unit 612 may predict the received power amount by processing or calculation specified by a predetermined program, or may use a learning model that learns the relationship between the actual power reception data and the predicted value of the received power amount in the target period. A predicted value of the amount of received power may be output by giving actual power reception data. Note that the learning model may be generated using a technique that provides teacher data, or may be generated using a reinforcement learning technique that rewards desired results.

The power generation amount control unit 613 uses the power generation database 616 to control the power generation amount of the private power generation equipment 30A (see FIG. 1). The data recorded in the power generation database 616 is used not only for controlling the amount of power generation but also for calculating usage charges.
FIG. 5 is a diagram showing an example data structure of the power generation database 616 used in the first embodiment. The data structure shown in FIG. 5 is an example, the described items are not essential, and the storage of other items is optional.
The power generation database 616 shown in FIG. 5 records information about consumers who are service users. For example, the identifier (power generation equipment ID) of the private power generation equipment associated with each consumer, the type, the maximum amount of power generation (upper limit that can be generated), the amount of power received as a predicted value, the amount of power transmitted as an actual value, as an actual value The amount of power received, etc. is recorded.

The power generation facility ID (IDentifier) may be, for example, a management number used by the administrator of the power interchange service, or a product number. The type is information on the method of power generation by private power generation equipment. In the case of FIG. 5, the private power generation equipment associated with consumer A and consumer B is a fuel cell, and the private power generation equipment associated with consumer C is an internal combustion power generator.
In the case of a private power generation facility that uses fuel to generate power, the maximum power generation amount is the maximum power generation amount in terms of performance (that is, the rated output). On the other hand, in the case where the amount of power generation is affected by the natural environment as in solar power generation equipment, the maximum amount of power generation is the maximum value (upper limit amount) of the amount of power that can be generated at each point in time.
The predicted value obtained by the received power amount prediction unit 612 is stored in the received power amount as the predicted value. The amount of power transmitted as an actual value stores the amount of electricity reverse-fed from the private power generator 30A to the power system 10 (specifically, the amount of electricity measured by the electricity meter 31 (see FIG. 2)). be. The amount of electricity received as an actual value stores the amount of electricity received at the place of demand (specifically, the amount of electricity measured by the electricity meter 42 (see FIG. 2)).
In principle, the power generation amount control unit 613 instructs the power generation amount of the private power generation equipment 30A (see FIG. 2) so as to match the predicted value of the received power amount. However, if the predicted value of the amount of power received exceeds the maximum amount of power generated by the private power generation equipment 30A (see FIG. 2), an instruction is given to generate power at the maximum amount of power generated.

Returning to the description of FIG.
The charge calculation unit 614 uses the charge management database 617 to calculate the charge for the power interchange service.
FIG. 6 is a diagram showing an example data structure of the charge management database 617 used in the first embodiment. The data structure shown in FIG. 6 is an example, the described items are not essential, and the storage of other items is optional.
In the charge management database 617 shown in FIG. 6, the service charge breakdown and total amount information are recorded for each consumer who is a service user. In the case of FIG. 6, as the breakdown of the service charge, usage costs, maintenance costs, fuel costs, and power transmission costs for private power generation facilities associated with each consumer are shown.

The usage cost of the private power generation equipment includes, for example, the rent for the section 20A, the lease fee for the private power generation equipment 30A, and the like. Maintenance costs also include, for example, periodic inspection costs and repair costs for the private power generation equipment 30A. These costs may be a fixed charge, a pay-as-you-go system that is incurred each time the work is performed, or a composite charge system that combines a fixed charge and a pay-as-you-go system. In addition, there is a possibility that it may differ depending on the type of the private power generation equipment 30A. The fuel cost is the cost of fuel required for power generation. Fuel costs are proportional to the amount of power generated. The fuel cost may be the market price or a fixed value determined in advance. The transmission cost is a charge required to transmit the electricity generated by the private power generation equipment 30A to the demand area 40A via the power system 10 . In addition, an imbalance charge to be paid when the planned power generation amount differs from the actual transmission amount may be included. The usage fee calculator 614 calculates the total amount of these fees.

<Processing operation of power system>
FIG. 7 is a diagram showing an example of a processing operation performed by power system 1 according to the first embodiment. Note that symbol S in the figure indicates a step. The processing operation here is one form of the power transmission control method.
In the case of the present embodiment, the terminal 43 on the demand site 40A side corresponding to the consumer A notifies the management server 60 of the received power amount (step 1). This notification is executed, for example, every 30 minutes.
The management server 60 records the notified amount of power received (step 2). In the case of the present embodiment, the notified power reception amount is recorded in the power reception record database 615 (see FIG. 3) and the power generation database 616 (see FIG. 3).

On the other hand, the terminal 32 (see FIG. 2) of the section 20A (see FIG. 2) in which the consumer A's private power generation equipment 30A (see FIG. 2) is installed notifies the management server 60 of the power transmission amount (step 3). The amount of power transmitted here is the value measured by the electricity meter 31 (see FIG. 2), and is basically the same as the amount of power generated by the private power generator 30A.
When the actual value of the received power amount and the actual value of the transmitted power amount are obtained for the consumer A, the management server 60 determines whether the received power amount and the transmitted power amount are different (step 4). A mismatch between the received power amount and the transmitted power amount occurs when the received power amount is smaller than the prediction or when the power reception amount is larger than the prediction.
If a positive result is obtained in step 4, the management server 60 records the power transmission amount (step 5). The recording here is performed to distinguish between the power received from the private power generator 30A and the power purchased from the retail electricity supplier.
If a negative result is obtained in step 4, the management server 60 does not record the amount of power transmission. The amount of transmitted power is the same as the amount of received power, and the amount of received power has been recorded in step 2.

Next, the management server 60 predicts the power reception amount corresponding to the next prediction period (step 6). In the case of the present embodiment, the management server 60 predicts the power reception amount for the next period, including the latest power reception record data.
When the power reception amount is predicted, the management server 60 determines whether or not the predicted value is greater than the maximum power generation amount (step 7).
When a positive result is obtained in step 7 (that is, when the predicted value is greater than the maximum power generation amount), the management server 60 sets the maximum power generation amount of the private power generator 30A as the predicted value (step 8). The maximum power generation amount here is the maximum power generation amount at the time of determination.

After step 8, or when a negative result is obtained in step 7 (that is, when the predicted value is smaller than the maximum power generation amount), the management server 60, based on the predicted value, It is determined whether or not the sum of the estimated fuel cost and the estimated transmission cost is less than the electricity cost for purchasing electricity from a retail electricity supplier (step 9).
The electricity bill here is calculated based on the price list applied by the electricity retailer from whom the electricity is purchased during the judgment time period. In addition, in the case of the private power generation equipment 30A that does not require fuel, such as the photovoltaic power generation equipment, the predicted value of the power transmission cost is compared with the electricity cost in the case of purchasing electricity.
In the present embodiment, the total amount of the fuel cost and the power transmission cost, which fluctuates according to the amount, is compared.

When a negative result is obtained in step 9 (when it is cheaper to purchase electricity from a retail electricity supplier), the management server 60 instructs the terminal 32 to stop power generation and transmission. In addition, in the case of the private power generation equipment 30A that does not require fuel, such as a photovoltaic power generation equipment, an instruction to stop power transmission is given.
If a positive result is obtained in step 9, the management server 60 instructs power generation with the predicted value (step 10).
The terminal 32 that has received the power generation amount instruction from the management server 60 sets the power generation amount of the private power generation equipment 30A according to the instruction (step 11).

<Embodiment 2>
<Usage form>
FIG. 8 is a diagram for explaining the mode of use of the power interchange service assumed in the second embodiment. In FIG. 8, parts corresponding to those in FIG. 1 are shown with reference numerals.
This embodiment corresponds to a case where one distributed power source is shared by a plurality of consumers. In the case of FIG. 8, one private power generation facility 30 installed on land 20 is shared by three consumers A, B, and C. In FIG.

<System configuration>
FIG. 9 is a diagram showing a configuration example of a power system 1A assumed in the second embodiment. In FIG. 9, parts corresponding to those in FIG. 2 are shown with reference numerals corresponding thereto.
The power system 1A shown in FIG. 9 includes a power system 10, facilities on the land 20 side where the in-house power generation facility 30 is installed, facilities on the side of the demand area 40A corresponding to the consumer A, and facilities corresponding to the consumer B. It consists of facilities on the side of the demand site 40B, facilities on the side of the demand site 40C corresponding to the consumer C, the Internet 50 connecting these facilities, and a management server 60A of a business operator who provides power interchange services. .

A unique part of this embodiment is the management server 60A. FIG. 10 is a diagram showing the functional configuration of the management server 60A used in the second embodiment. In FIG. 10, parts corresponding to those in FIG.
The management server 60A in the present embodiment is newly provided with a distribution ratio database (DB) 618 that stores information on distribution ratios predetermined among a plurality of consumers. It differs from the server 60 (see FIG. 3). Further, the power generation amount control unit 613A in the present embodiment is also different in that it has a function of controlling the power generation amount in accordance with a predetermined distribution ratio among a plurality of consumers.

FIG. 11 is a diagram illustrating an example of distribution ratios determined in advance among a plurality of consumers. In the case of FIG. 11, the distribution ratio is determined for each of four time periods.
For example, in the time zone from 0:00 to 6:00, 20% of the maximum power generation (rated output) is allocated to consumer A, and 40% of the maximum power generation (rated output) is allocated to consumers B and C. assigned.
Also, for example, in the case of the time period from 6:00 to 12:00, 80% of the maximum power generation (rated output) is allocated to consumer A, and 10% of the maximum power generation (rated output) is allocated to consumers B and C. assigned to each.
Also, for example, in the case of the time zone from 12:00 to 18:00, 60% of the maximum power generation (rated output) is allocated to consumer A, and 30% of the maximum power generation (rated output) is allocated to consumer B. , consumer C is allocated 10% of the maximum power generation (rated output).
Also, for example, in the case of the time zone from 18:00 to 24:00, consumers A and C are each allocated 30% of the maximum power generation (rated output), and consumer B is allocated 40% of the maximum power generation (rated output). is assigned.
In FIG. 11, by combining consumer A, who receives a relatively large amount of power during the daytime, and consumers B and C, who receive a relatively large amount of power during the night, reduces fluctuations.

Needless to say, the distribution ratio shown in FIG. 11 is an example, and the time width as the predetermined time unit is not limited to 6 hours. For example, the distribution ratio may be set in units of 15 minutes or 30 minutes, or may be set in units of 1 hour or 2 hours. Alternatively, the same distribution ratio may be used throughout the day.
In the case of the present embodiment, the amount of power transmitted to each consumer is controlled within the range of the power amount (allocated power generation amount) determined by the distribution ratio. However, if the total amount of power received by each consumer does not exceed the maximum power generation amount of the private power generation equipment 30 (that is, if there is a distributable surplus power generation capacity), the surplus electricity is limited by the distribution ratio. You may allocate to a consumer individually.

When one private power generation facility 30 is shared by a plurality of consumers as in the present embodiment, the amount of power generated is greater than when the private power generation facility 30 is used by a single consumer. When the power generation amount increases, the load factor of the private power generation equipment 30 increases. In many cases, the power generation efficiency of the private power generation equipment 30 increases as the load factor increases. Therefore, by sharing one private power generation facility 30 among a plurality of consumers, power generation efficiency can be improved compared to the case where the private power generation facility 30 is used by a single consumer. If the power generation efficiency is improved, even if the same amount of electricity is generated, less fuel is consumed during power generation, and the burden of fuel costs can be reduced.

<Processing operation of power system>
FIG. 12 is a diagram showing an example of processing operations performed by the power system 1A shown in the second embodiment. In FIG. 12, the parts corresponding to those in FIG. 7 are indicated by the reference numerals. Note that symbol S in the figure indicates a step. The processing operation here is one form of the power transmission control method.
In the case of the present embodiment, the terminal 43 on the side of the demand area 40A corresponding to the customer A notifies the management server 60A of the received power amount (step 1A), and the terminal 43 on the side of the demand area 40B corresponding to the customer B notifies the management server 60A of the received power amount (step 1B), and the terminal 43 on the side of the demand site 40C corresponding to the customer C notifies the management server 60A of the received power amount (step 1C). The notification here is also executed, for example, every 30 minutes.
The management server 60A records the received power amount for each consumer (step 21). In the case of the present embodiment as well, the notified amount of power received is recorded in the power reception record database 615 (see FIG. 3) and the power generation database 616 (see FIG. 3).

On the other hand, the terminal 32 (see FIG. 9) of the land 20 (see FIG. 9) where the private power generation equipment 30 (see FIG. 9) is installed notifies the management server 60 of the total amount of power transmission (step 31). . The total amount of power transmission is a value measured by the electricity meter 31 (see FIG. 2) and is basically the same as the amount of power generated by the private power generator 30 .
In the case of the present embodiment, the management server 60A determines whether or not the actual value of the received power amount differs from the actual value of the transmitted power amount for each consumer (step 41). The power transmission amount here is the power transmission amount determined in the previous prediction period.
The management server 60A records the amount of power transmission for each customer for which a positive result was obtained in step 41 (step 51). On the other hand, the management server 60A does not record the power transmission amount for the customer for which a negative result was obtained in step 41.

Next, the management server 60A predicts the power reception amount for the next prediction period for each consumer (step 61). In the case of the present embodiment, management server 60A predicts the power reception amount for the next prediction period, including the latest power reception record data.
When the received power amount is predicted, the management server 60A determines whether or not the predicted value for each consumer is greater than the allocated power generation amount assigned to each consumer (step 71).
The management server 60A sets the allocated power generation amount as the predicted value for the consumer for whom a positive result was obtained in step 71 (that is, the consumer whose predicted value is greater than the allocated power generation amount) (step 81). Note that the allocated power generation amount is determined based on the maximum power generation amount at the time of determination.
If a negative result is obtained in step 71, or after step 81, the management server 60A calculates the predicted value of the fuel cost and the predicted value of the power transmission cost that occur when the private power generation equipment 30 generates power based on the predicted value. is smaller than the electricity charge for purchasing electricity from a retail electricity supplier (step 91).

The management server 60A sets the prediction value to 0 for the consumer for which a negative result was obtained in step 91 (the consumer whose electricity is cheaper to purchase from the electricity retailer) (step 121). Incidentally, the predicted value of the customer for which a positive result was obtained in step 91 remains unchanged.
Next, the management server 60A instructs the terminal 32 to generate power based on the sum of the predicted values of each consumer (step 101).
The terminal 32 that has received the power generation amount instruction from the management server 60A sets the total power generation amount of the private power generation equipment 30 according to the instruction (step 111).

<Other embodiments>
Although the embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the scope described in the above-described embodiments. It is clear from the scope of claims that the technical scope of the present invention includes various modifications and improvements to the above-described embodiment.

In the above-described second embodiment, it is assumed that the three consumers A, B, and C who share one private power generation facility 30 are predetermined, but the combination of consumers is not fixed. good too. For example, the combination of consumers may be changed for each time slot. For example, the time period from 0:00 to 6:00 is a combination of consumers A, B, and C, but the time period from 6:00 to 12:00 may be a combination of consumers A and D. In this way, the consumers to be combined and the number of people to be combined may be arbitrary.
However, it is desirable to determine the combination of consumers and the distribution ratio so that fluctuations in the amount of power generated by the private power generation equipment 30 (that is, the amount of power transmitted) are reduced. When determining the combination and distribution ratio, for example, the type of the private power generation equipment 30, the maximum power generation amount, the power reception pattern and power reception amount of the consumer, and the like are referred to.
At this time, the type of the private power generation equipment 30, the maximum power generation amount, the power reception pattern and power reception amount of the consumer, etc. are given to the learning model obtained by machine learning the correspondence relationship, and the combination of consumers and the distribution ratio to be allocated to the private power generation equipment 30 are determined. You may In machine learning, a method of giving teacher data in advance may be used, but learning that does not use teacher data, such as reinforcement learning, may also be employed.

In the above-described embodiment, the consumer or the combination of consumers associated with the specific private power generation equipment 30 is fixed during the contract period, but the customer or the consumer associated with the specific private power generation equipment 30 may be switched through the determination process of the business operator that provides the power interchange service. For example, when a failure occurs in the private power generation equipment 30, the relationship between the private power generation equipment 30 and the consumer may be changed so that the power transmission specified in the contract is continued.
In the above-described embodiment, the power generation amount of the private power generation equipment is controlled based on the predicted value of the electric power received by the consumer from the power system, but the demand for the power generation capacity of the private power generation equipment is small. In some cases, part or all of the surplus power may be provided to an unspecified third party as the right to receive power using the power interchange service. Specifically, information on surplus power is disclosed to an unspecified third party and sold as a right to receive surplus power or a right to generate power within the surplus capacity to a third party who needs power. Transactions of rights here are not limited to buying and selling, but may also be lending.

DESCRIPTION OF SYMBOLS 1, 1A... Power system, 10... Power system, 20... Land, 20A, 20B, 20C... Section, 30, 30A, 30B, 30C... Private power generation facility, 31, 42... Electricity meter, 32, 43... Terminal, 40A , 40B, 40C... demand area, 41... electricity-using equipment, 50... Internet, 60, 60A... management server, 611... power reception record acquisition unit, 612... power reception amount prediction unit, 613, 613A... power generation amount control unit, 614... Usage charge calculation unit 615 Power reception record database 616 Power generation database 617 Charge management database 618 Distribution ratio database

Claims (9)

A power transmission control method executed by a terminal connected to a communication network,
A process of individually predicting the amount of electricity received from the power system by each consumer using the power interchange service;
and a process of controlling the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity ,
When the private power generation facility is shared by a plurality of consumers who use the power interchange service, the amount of electricity generated by the private power generation facility is divided among the plurality of consumers according to a predetermined distribution ratio for each consumer. Control within a range that satisfies, and change the distribution ratio in a predetermined time unit,
Transmission control method. A power transmission control method executed by a terminal connected to a communication network,
A process of individually predicting the amount of electricity received from the power system by each consumer using the power interchange service;
A process of controlling the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity;
has
When the private power generation equipment is shared by a plurality of consumers using an electric power interchange service, the amount of electricity predicted for a certain consumer is electric power determined by a predetermined distribution ratio among the plurality of consumers. When there is surplus generation power that can be distributed even if it is larger than the amount, the private power generation equipment is instructed to generate the surplus power, and the surplus power is allocated to the consumers who have insufficient power reception.
Transmission control method. A power transmission control method executed by a terminal connected to a communication network,
A process of individually predicting the amount of electricity received from the power system by each consumer using the power interchange service;
A process of controlling the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity;
has
When the private power generation equipment is shared by a plurality of consumers who use the power interchange service, changing the combination of the plurality of consumers according to time,
Transmission control method. a prediction unit that individually predicts the amount of electricity received from the power system by each consumer using the power interchange service;
a control unit that controls the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity ,
The control unit
When the private power generation facility is shared by a plurality of consumers who use the power interchange service, the amount of electricity generated by the private power generation facility is divided among the plurality of consumers according to a predetermined distribution ratio for each consumer. Control within a range that satisfies, and change the distribution ratio in a predetermined time unit,
Transmission management system. a prediction unit that individually predicts the amount of electricity received from the power system by each consumer using the power interchange service;
a control unit that controls the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity;
has
The control unit
surplus power generation capacity that can be distributed even if the amount of electricity predicted for a certain consumer is greater than the amount of electricity determined by the distribution ratio when the private power generation equipment is shared by a plurality of consumers who use the power interchange service If there is, instruct the private power generation facility to generate the surplus power and allocate the surplus power to the consumer who is short of the amount of power received.
Transmission management system. a prediction unit that individually predicts the amount of electricity received from the power system by each consumer using the power interchange service;
a control unit that controls the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity;
has
The control unit
When the private power generation equipment is shared by a plurality of consumers who use the power interchange service, changing the combination of the plurality of consumers according to time,
Transmission management system. to a terminal connected to a communication network,
A function that individually predicts the amount of electricity received from the power system by each consumer using the power interchange service;
A function of controlling the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity ;
When the private power generation facility is shared by a plurality of consumers who use the power interchange service, the amount of electricity generated by the private power generation facility is divided among the plurality of consumers according to a predetermined distribution ratio for each consumer. A function of controlling within a range satisfying and changing the distribution ratio in a predetermined time unit;
program to make it happen . to a terminal connected to a communication network,
A function that individually predicts the amount of electricity received from the power system by each consumer using the power interchange service;
A function of controlling the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity;
When the private power generation equipment is shared by a plurality of consumers using an electric power interchange service, the amount of electricity predicted for a certain consumer is electric power determined by a predetermined distribution ratio among the plurality of consumers. When there is surplus power generation that can be distributed even if it is larger than the amount, a function of instructing the private power generation equipment to generate power by the surplus power and allocating the surplus power to consumers who have insufficient power reception;
program to make it happen. to a terminal connected to a communication network,
A function that individually predicts the amount of electricity received from the power system by each consumer using the power interchange service;
A function of controlling the amount of electricity generated by the private power generation equipment of each consumer and transmitted to the power system according to the predicted amount of electricity;
A function of changing the combination of the plurality of consumers according to time when the private power generation equipment is shared by a plurality of consumers using the power interchange service;
program to make it happen.

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