JP2002123578A - Electric power retail system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric power retail system which secure necessary electric power to be provided for consumers by performing supply and demand planning and supply and demand adjustment adaptive to even unexpected supply and demand variation. SOLUTION: This electric power retail system includes an electric power retailer system 100 which performs supply and demand planning and supply and demand adjustment making it possible to obtain electric power equivalent to the demand amount of electric power or at the smallest cost, 1st to 3rd consumer systems 2001 to 2003 which consume electric power supplied from an electric power system network 500 and transmits the measured power consumption to the electric power retailer 100 through the Internet 600, and 1st to 3rd power generating company systems 4001 to 4003 which generate electric power and supply it to consumers through the electric power system network 500, and measure power generation quantities and transmit them to the electric power retailer system 100 through the Internet 600.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information system used in the electric power retail business, and more particularly to an electric power retail business by transmitting and receiving information to and from a power retailer, a power generator and a consumer. The present invention relates to a power retailing system that performs necessary information processing.

[0002]

2. Description of the Related Art Conventionally, since the practice of the electric power retailing business has been regulated by laws and regulations, there is no conventional example of an information system used in the electric power retailing business. Here, in general,
When supplying goods or the like to be retailed to consumers, the retailer purchases the goods or the like from the producer, receives an order from the customer, and sells the goods. Therefore, in the electric power retailing business, the electric power retailer purchases the retail electric power from the power generation company, receives the order from the customer indicating the required amount of electric power, and distributes the purchased retail electric power. It will be supplied to customers.

[0003]

However, electric power retailers purchase electric power from electric power companies and other power generators with different tariffs, or supply electric power corresponding to demand by using in-house power generation. A plan must be prepared in advance and approved by the grid administrator. In addition, the power retailer adjusts the power supply so that the demand and the supply are the same at the same time even in the case of unexpected demand fluctuation on the day of executing the plan, and supplies the power corresponding to the demand. There must be.

In the electric power retailing business, a pool market is scheduled to be set up in which a future or present amount of electric power used or generated is bid at a desired price per unit time, and the pool electric power of the pool market is also used. Thus, it is desired to secure the demand or supply of power.

Accordingly, an object of the present invention is to provide a supply-and-demand plan and supply-and-demand adjustment so as to be able to cope with a difference in tariff and an unexpected fluctuation in demand on the day, and to supply electric power necessary for supplying to a customer. It is an object of the present invention to provide an information system used in a power retailing business for securing. Further, another object of the present invention is to provide an information system used in a power retailing business for securing electric power required for supplying to customers by utilizing a pool market.

[0006]

Means for Solving the Problems and Effects of the Invention The first invention is an electric power retailing system for an electric power retailer to purchase electric power from a power generator and retail it to consumers who consume the electric power. A power retailer system provided on the power retailer side, a power generator system provided on the power generator side, and a customer system provided on the customer side, the power retailer system; The power generator system and the customer system are connected by a network for mutually communicating information, and the power retailer system calculates a predicted future demand value from the past power consumption in the customer system. To create a power receiving plan, and notify the power receiving plan created via the network to the customer system. The customer system notifies the power receiving plan from the power retailer system. Modify or approve the received power plan and notify the power retailer system via the network, and the power retailer system creates a power generation plan based on the power plan corrected or approved by the customer system. And notifies the power generation system via the network, and the power generation system controls the amount of power generation based on the power generation plan notified from the power retailer system and outputs the power generation amount via the network. Notify the retailer system, the customer system notifies the amount of power consumed via the network to the power retailer system, and the power retailer system based on the power consumption notified from the customer system. The calculated total power consumption and the total power generation calculated based on the power generation notified from the power generation operator system are interchangeable. Power program by modifying the to be equal to, and notifies the power program that has been modified through the network to the power producers system.

[0007] As described above, in the first invention, a supply-and-demand plan and supply-and-demand adjustment are performed so as to be able to cope with a difference in fare and an unexpected change in demand on the day, and supply to a customer. An electric power retail system that secures necessary electric power can be provided.

[0008] A second invention is an invention according to the first invention, wherein a part or all of electric power for purchase and / or retailing by an electric power retailer is traded through a pool market. It is characterized by the following.

[0009] As described above, in the second invention, in addition to the fixed customers and the power generation companies, the power pool market can be considered, so that the supply and demand plan can be set up more flexibly and the supply and demand adjustment can be made. Can be provided.

A third invention is an invention according to the first invention, wherein the electric power retailer system includes a power receiving process data management means for receiving the power consumption measured in the customer system, A power receiving result management database that accumulates the consumed power amount with the corresponding time, a demand forecasting unit that calculates a demand forecast value by referring to the power receiving result management database, and a power receiving plan is created based on the demand forecast value. Power receiving planning means to be presented to the home system for approval or modification, a generator management database storing the generator characteristics of the generator system, and conforming to the power generation characteristics stored in the generator management database. As a condition, a supply-demand coordinator who creates or modifies a power generation plan so that the power supply corresponding to the demand can be obtained at the minimum cost. Power generation planning means for notifying the power generation system to the power generation system and adjusting the amount of power supply, power generation process data management means for receiving the power supply amount measured in the power generation system, And a power generation performance management database that accumulates the supplied power amount with the corresponding time, and the supply and demand adjustment means corresponds to the predicted demand amount by referring to the power reception plan created by the customer when creating the power generation plan. In order to obtain the required amount of power at the minimum cost, the power generation amount of the power generation company system is determined, and when the power generation plan is corrected, the power generation amount is determined based on the power consumption amount received by the power reception process data management means. The generation of a generator system that is allowed to be changed so that power equal to the calculated total power consumption can be obtained at the minimum cost Characterized by re-determining the amount.

As described above, according to the third aspect of the present invention, a supply-and-demand plan and a supply-and-demand adjustment are performed so as to be able to cope with a difference in a charge and an unexpected fluctuation in demand on the day, and supply to a customer. It is possible to provide a power retail system including a power retailer system that can obtain necessary power at almost the minimum cost.

A fourth invention is an invention according to the first invention, wherein the customer system measures a customer power receiving facility consuming power and an amount of power consumed in the customer power receiving facility. A power receiving metering unit, a power receiving process data communication unit for transmitting the power consumption measured by the power receiving metering unit to the power retailer system, and receiving and presenting a power receiving plan from the power retailer system and creating it And a power receiving plan application section.

[0013] As described above, in the fourth invention, a supply and demand plan and a supply and demand adjustment are made so as to be able to cope with a difference in fare and an unexpected change in demand on the day, and the power required for the customer is reduced. An electric power retail system including a customer system that can supply the electric power can be provided.

A fifth invention is an invention according to the fourth invention, wherein a plurality of customer systems are provided, and at least one of the customer systems matches a demand forecast value in a power receiving plan. And a power receiving control unit that controls the amount of power consumed in the customer power receiving facility.

[0015] As described above, in the fifth aspect of the present invention, since the power receiving control unit can receive power so as to match the power receiving plan, the electric power retailer system can execute the demand fluctuation on the day in the present customer system. Need not be considered. Therefore, the present consumer system does not need to frequently notify the electric power retailer system of the amount of consumed power, so that communication costs can be significantly reduced.

[0016] A sixth invention is an invention according to the fourth invention, wherein a plurality of customer systems are provided, and at least one of the customer systems is a private system that supplies power to the customer power receiving facility. The amount of power generated by the in-house generator is adjusted so that the value obtained by subtracting the amount of power supplied by the in-house generator from the amount of power consumed by the generator and the customer's receiving equipment matches the predicted demand in the power receiving plan. And a power receiving control unit for controlling.

As described above, in the sixth invention, as in the fifth invention, it is not necessary to consider the demand fluctuation on the day in the customer system. Therefore, the present consumer system does not need to frequently notify the consumed power amount, so that the communication cost can be significantly reduced.

A seventh invention is an invention according to the first invention, wherein the power generation company system includes a generator for supplying electric power, and a power generation metering unit for measuring the amount of power supplied by the generator. And a power generation process data communication unit that transmits the supplied power amount measured by the power generation metering unit to the electric power retailer system; and a power generation plan transmitted from the electric power retailer system and receives the generated power generation plan. And a power generation plan adjustment unit that controls the generator so as to correspond to the above.

As described above, in the seventh invention, a supply-and-demand plan and a supply-and-demand adjustment are performed so as to be able to cope with a difference in a charge and an unexpected change in demand on the day, and the electric power required for the consumer is reduced. It is possible to provide a power retailing system including a power generation company system that can supply power.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) Hereinafter, an information system for a power retail business according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram illustrating a system configuration of the entire electric power retailing business according to the first embodiment of the present invention.

In FIG. 1, the system of the entire electric power retail business includes an electric power retailer system 100, first to third consumer systems 2001 to 2003, an electric power company system 300, and first to third electric power generation systems. Business system 4001 to 4003 and power system network 500
And the Internet 600.
In addition, the first to third customer systems 2001 to 20
03 and first to third power generation company systems 400
1 to 4003 are examples, and may be one or two, or may include four or more. The Internet 600 is a typical example of a network using TCP / IP, and may be any network, such as a subscriber telephone or ISDN (Internet).
graded Services Digital N
wireless, including dedicated networks, dedicated lines, mobile phones, etc.
Any communication medium may be used.

First, the first to third power generator systems 4001 to 4003 have one or more power generators, and operate the power generators to generate the first to third customer systems 2.
001 to 2003, the power system network 500
Power is supplied via the. Power system network 50
Reference numeral 0 denotes a power transmission network that is managed by the power company system 300 and includes a power transmission line, power distribution equipment, and the like for transmitting generated power to each customer. The first to third customer systems 2001 to 2003 have facilities such as factories and buildings that consume power, and consume the power supplied via the power system network 500.

The first to third power generator systems 4001 to 4003 perform various types of information communication with the electric power retailer system 100 via the Internet 600. For example, the first to third power generation company systems 4
001 to 4003 via the Internet 600,
It receives and approves the power generation plan from the power retailer system 100, notifies the amount of power to be supplied and the state of the generator, and confirms the fee. Details will be described later.

Similarly, the first to third customer systems 2001 to 2003 also perform various types of information communication with the electric power retailer system 100 via the Internet 600. For example, the first to third customer systems 200
1 to 2003 receive the presentation of the power reception plan from the electric power retailer system 100 via the Internet 600, approve it, notify the amount of power to be used, and receive a charge. Details will be described later.

The power company system 300 manages the power system network 500 as described above, performs power flow analysis in accordance with the supply and demand plan submitted by the power retailer system 100, and verifies the stability of the transmission system. The verified result is notified to the power retailer system 100 as a constraint on the supply and demand plan. Note that these communications may be performed via the Internet 600.

Next, what kind of information is communicated and operated by the entire power retail business system as shown in FIG.
A description will be given in chronological order using. FIG. 2 is a schematic diagram showing an operation example of a system of the entire electric power retail business.
In FIG. 2, a system of the entire electric power retail business includes an electric power retailer system 100 and a consumer system 200.
And the power company system 300 and the power generation company system 4
00 and a power system network 500. Therefore, for convenience of explanation, other consumer systems and power generation company systems, and the Internet 600 are omitted. S1 to S9 in the figure represent operation steps when performing information communication or information processing, respectively.

First, the electric power retailer system 100
For example, a power receiving plan is created every 30 minutes on the next day based on past results, presented to the customer system 200, and the approval is received from the customer system 200 (S1). When the approval is received, the electric power retailer system 100 performs a supply and demand adjustment calculation from the electric power receiving plan such that the demand and the supply coincide with each other every 30 minutes, for example, and creates a power generation plan (S2). The created power generation plan is presented to the power generation company system 400 (S3). Further, the created plan is presented to the electric power company system 300 and is approved (S4).

Next, the electric power retailer system 100
The customer system 200 is notified of the current load value (power consumption) measured at, for example, 5 minute intervals.
The power generation company system 400 is notified of the current load value (power generation amount) measured at, for example, 5 minute intervals (S).
5). The electric power retailer system 100 controls the generator of the electric power supplier system 400 at intervals of, for example, 5 minutes so that the demand and the supply of the electric power match from these load values (S6). The actual power generation and power consumption are measured, for example, every five minutes by meter reading of the power company system 300, and are reported from the power company system 300 to the power retailer system 100 as meter reading results.

Finally, the electric power retailer system 100
Calculates the fee to be paid to the power generation company system 400 and the fee to be charged to the customer system 200 using the meter reading result or the measured load value (S8).
Then, based on the calculation result, the electric power retailer system 100 performs a billing process or a billing process on the customer system 200, and performs a payment process or a reporting process on the power generation company system 400 (S9).

The electric power retailer system 10 for realizing the operation of the entire electric power retail business system as described above.
0, the detailed configurations of the customer system 200, the power company system 300, and the power generation company system 400 will be described below with reference to FIG. FIG. 3 is a block diagram showing a detailed configuration of each system included in the entire power retail business system.

In FIG. 3, the system of the entire electric power retailing business is the same as in FIG.
, A customer system 200 and a power company system 300
, A power generation company system 400, and a power system network 500.

The electric power retailer system 100 includes a power receiving result management database 101 and a customer management database 1
02, a charge system database 103, a generator management database 104, and a power generation result management database 105.
Power reception process data management unit 110, received power performance management unit 111, customer billing processing unit 112, demand prediction unit 113, power reception planning unit 114, supply and demand adjustment unit 115
A constraint condition processing unit 116, a charge management unit 117, a power generation process data management unit 120, a generated power performance management unit 121, a power generation company billing processing unit 122, a simultaneous same amount control unit 123, a power generation plan Unit 124.

The customer system 200 includes a customer power receiving facility 201, a power receiving metering unit 202, a power receiving process data communication unit 203, a power receiving plan application unit 204, and a customer bill receiving unit 205. Further, the power company system 300 includes a power system management unit 301.

The power generation company system 400 includes one or more power generators 401, a power generation metering unit 402, a power generation process data communication unit 403, and a power generation plan adjustment unit 404.
And a power generation company report receiving unit 405. The bold arrows in the figure indicate the flow of power, and the dotted arrows indicate the flow of data in the corresponding database.

Next, the operation of each component will be described. First,
In the power generation company system 400, the generator 401
Based on the power generation plan from the power generation plan adjustment unit 404, a predetermined amount of power is generated. The power generation plan adjustment unit 404 receives a power generation plan instructing the power generation amount of the generator from the power generation planning unit 124 provided in the power retailer system 100. Details of the power generation plan will be described later. These operations are represented by S in FIG.
3 and S6.

Power generation metering section 402 measures the amount of power transmitted to power system network 500,
Further, the status of the generator 401 is monitored, and the results are sent to the power generation process data communication unit 403. The power generation process data communication unit 403 transmits the collected data to the power generation process data management unit 120 provided in the power retailer system 100 at regular intervals. These operations correspond to S5 in FIG. This communication is
What is performed via the Internet 600 has been described above.

In the electric power company system 300, the electric power system management unit 301 monitors the state of the electric power system network 500 and manages it so that the stability of the electric power transmission system is ensured. If a problem actually occurs in the power transmission system, or if it is predicted that a problem will occur in the power transmission system if the submitted supply and demand adjustment plan is implemented, the power system management unit 301
Notifies the constraint condition processing unit 116 provided in the electric power retailer system 100 of the constraint condition. If there is no problem with the submitted supply and demand adjustment plan, it is approved. These operations correspond to S4 in FIG.

In the customer system 200, the power transmitted from the power system network 500 is consumed by the customer power receiving equipment 201. Customer power receiving equipment 20
1 indicates general equipment that consumes approximately electric power, such as a factory or an office building. The power receiving metering unit 202 measures the amount of power supplied to the customer power receiving facility 201 and sends the measurement result to the power receiving process data communication unit 203. The power reception process data communication unit 203 transmits the collected data to the power reception process data management unit 110 provided in the power retailer system 100 at regular intervals.

Specifically, power receiving metering section 202
Sends the power amount measured by the integrating wattmeter or the like to the power receiving process data communication unit 203, for example, every one minute. The power receiving process data communication unit 203 integrates or stores the measured power amount, and transmits the integrated or stored measurement data in response to a transmission request from the power receiving process data management unit 110 every five minutes, for example. These operations correspond to S5 in FIG. Note that, as described above, this communication is performed via the Internet 600.

As described above, the measurement data received by the power reception process data management unit 110 is sent to the reception power performance management unit 111. Received power record management unit 11
1 inputs the measured data to the power receiving result management database 101 together with an identification code such as date and time or a customer ID. In this way, the power receiving record management database 101
Can accumulate demand results of each customer. Further, the power receiving result management database 101 may accumulate data such as temperature and weather necessary for demand forecasting.

Similarly, the power generation process data management unit 120
The measurement data received by the
3 and the generated power performance management unit 121. The generated power performance management unit 121 inputs the measured data to the power generation performance management database 105 together with the date and time and the identification code such as the generator ID. In this way, the power receiving record management database 101 can accumulate the power generating record of each generator.

Next, the demand forecasting unit 113 calculates the power reception results stored in the power reception results management database 101, the business days and special event information of the customers stored in the customer management database 102, and the next day based on the weather forecast. Based on the predicted temperature and predicted humidity, for example,
The predicted load value predicted every minute is calculated. Note that the special event information in the consumer is a matter that substantially affects power consumption, such as a special holiday, a half-day holiday, a special operation day, and includes a wide range of matters that are known in advance. In addition to the large specific customers who own the customer system 200, there are small customers as well. Therefore, in demand forecasting, the data of these customers may be integrated and used for forecasting.

Here, as a specific demand forecasting method,
The demand forecasting unit 113 weights each parameter at the time of demand forecast, and extracts data having the highest correlation with each parameter on the forecast date from past demand actual data. Alternatively, it may be calculated by performing a predetermined calculation from related past demand actual data.

The demand forecast created as described above is
It is input to the power receiving planning unit 114. The power receiving planning unit 114
Power receiving plan application unit 20 provided in customer system 200
4 to communicate with the customer,
Get the approval. Specifically, the power receiving planning unit 114
Register the planned values in the power receiving plan on the homepage. The homepage is a content provided in the WWW service of the Internet, for example, HTML
(Hyper Text Markup Langua
ge). Further, when the plan value is registered on the homepage, the consumer is notified by e-mail or the like, and the consumer determines whether or not to access the homepage by the deadline time. If left unattended, the power receiving plan unit 114 regards the presented plan value as being approved, and if there is a correction in the plan value, receives the corrected value from the power receiving plan application unit 204.
Therefore, the customer can easily create the power receiving plan by accepting the presented power receiving plan if there is no problem and correcting it if there is a problem. The above operation corresponds to S1 in FIG.

When the demand forecast value is determined as described above,
The power receiving planning unit 114 inputs the determined demand forecast value to the demand / supply adjusting unit 115. The demand prediction unit 113 may predict the maximum amount when the predicted value fluctuates upward or downward together with the demand predicted value, and input the predicted value to the supply and demand adjustment unit 115. The supply and demand adjustment unit 115 allocates a load corresponding to the predicted value to each generator owned by the power generation company, for example, every 30 minutes, in order to secure power supply corresponding to the input predicted demand value.

Specifically, the supply / demand adjusting unit 115 determines various conditions such as the maximum power generation capacity and the minimum power generation amount of each generator stored in the generator management database 104 and the power generation amount of the generator on the day of execution of the plan. In consideration of the type of generator that can be adjusted (hereinafter referred to as a generator for adjustment) or a generator that cannot be adjusted (hereinafter referred to as a generator for pattern operation), The optimal amount of power generation for each machine. Typically, generators are allocated in order from the cheapest generator while satisfying these constraint conditions and the constraint condition by the power company input from the constraint condition processing unit 116. The charge system corresponding to each generator is stored in the charge system database 103, and the charge management unit 11
7 and is referred to by the supply and demand adjustment unit 115 as appropriate. There is no limitation on the method of assigning to generators.
A method such as a general mathematical programming or a genetic algorithm may be used. The above operation corresponds to S2 in FIG.

The demand and supply plan created in this way is input to the power generation planning unit 124. The power generation planning unit 124 creates a power generation plan for the corresponding power generation company, and notifies the power generation plan adjustment unit 404 in the power generation company system 400. Here, the power generation company system 400
If the generator 401 is a generator for pattern operation, the control corresponding to the demand fluctuation on the day cannot be performed, so the power generation plan adjustment unit 404 sets the generator on the day in accordance with the power generation plan created in advance. 401 is controlled. The case where the generator 401 is an adjusting generator will be described later. The above operation corresponds to S3 in FIG.

Next, even on the day when the plan is executed, as described above, the power receiving process data management unit 110
3 is received. Similarly, the power generation process data management unit 120 receives the state of the generator and the amount of power generation. As described above, these operations correspond to S5 in FIG.

Then, these pieces of information are stored in the simultaneous
23. The simultaneous-equivalent-amount control unit 123 adjusts the power generation amount based on these pieces of information so that the demand power amount and the supplied power amount become the same amount at the same time. Specifically, the generator is designed to increase the supply using the adjustment generator when the supply power is insufficient, and to decrease the supply using the adjustment generator when the supply power is excessive. Re-plan load allocation for Such re-planning is performed in the supply and demand adjustment unit 115, similarly to the plan on the previous day. Supply and demand adjustment unit 1
The re-planning performed in 15 is input to the power generation planning unit 124, a power generation plan corresponding to each adjustment generator is created, and transmitted to the power generation plan adjustment unit 404 in the power generation company system 400. The power generation plan adjustment unit 404 controls the generator 401 based on the transmitted data.
Specifically, while adjusting the amount of output variation stepwise by taking into account the difference between the current output and the planned value at 5 minute intervals, 3
Control is performed so as to reach the planned value at 0 minute intervals. The above operation corresponds to S6 in FIG.

The power generated and consumed in this way can be found by meter reading by a power company. For example, data stored in the power receiving performance management database 101 and the power generation performance management database 105 may be used. Therefore, the customer billing processing unit 112 receives the past demand record from the received power record management unit 111 at a predetermined time, calculates the charge in a predetermined period with reference to the charge system database 103, and 2
At 00, the request is notified to the customer request receiving unit 205. Typically, the customer billing processing unit 112 posts a bill on a homepage in a state where security is ensured, or presents the bill to the customer in a downloadable manner.

Similarly, the power generation company billing processing unit 122
At a predetermined time, a past power generation result is input from the generated power performance management unit 121, a fee for a predetermined period is calculated with reference to the fee system database 103, and the amount to be paid to the power generation company and the like are calculated. Notify the power generation company report receiving unit 405 in 400. The above operation corresponds to S7 to S9 in FIG.

(Second Embodiment) Unlike the system of the entire electric power retailing business according to the first embodiment, the second embodiment of the present invention
The system of the entire electric power retail business according to the embodiment always includes a plurality of customer systems, at least one of which has a different configuration and operation from the others. For example, the first and second customer systems 2001 and 200 shown in FIG.
2 has the same configuration and operation as the customer system 200 in the first embodiment, whereas the third customer system 2003 is different from them. The operation of the customer system different from the others will be outlined.

This customer system performs the same operation as that of the customer system in the first embodiment with respect to the preparation of the power reception plan of the previous day, but the control of the electric power retailer system with respect to the simultaneous same amount control of the day. Work so that it is not needed. That is, the customer system operates only to receive power in accordance with the power reception plan submitted by itself, and operates to completely eliminate fluctuations in power consumption outside the power reception plan on the day. Therefore, the simultaneous same amount control is performed only for the customer system in which the power consumption of the day fluctuates with respect to the power reception plan submitted the day before. Therefore, the present customer system different from the others does not become a load for the simultaneous same-quantity control. Hereinafter, the configuration and operation of this customer system will be described in detail.

FIG. 4 shows the customer system 2 shown in FIG.
It is a block diagram which shows the structure of the customer system 210 provided in this embodiment different from 00. In FIG.
The customer system 210 includes a customer power reception facility 201, a power reception metering unit 202, a power reception process data communication unit 213, a power reception plan application unit 214, a customer request reception unit 205, a power reception control unit 216, And a generator 217. In FIG. 4, the customer system 20 shown in FIG.
The same components as those of 0 are denoted by the same reference numerals and description thereof is omitted.

In the customer system 210, the private power generator 217 supplies power to the customer power receiving equipment 201. Typically, the private power generator 217 is constituted by a gas engine / turbine generator or a cogeneration system using a fuel cell. The power reception control unit 216 determines the amount of power generated by the private power generator 217 and the customer so that the actual received power input from the power reception metering unit 202 matches the power reception plan input from the power reception plan application unit 214. One or both of the power consumption amounts of the power receiving equipment 201 are controlled.

More specifically, if the received power amount increases because the actual power consumption of the day is higher than the power reception plan, the power reception control unit 216 increases the power generation amount of the private generator 217. Let it. Alternatively, the power consumption of the customer power receiving facility 201 is reduced. For example, the customer power receiving facility 201
The control is performed so as to reduce the power consumption of the air conditioner, lighting, and the like used in. Also, when the received power amount becomes smaller because the actual power consumption amount of the day is smaller than the power receiving plan, the power reception control unit 216 reduces the generated power amount of the private generator 217, or The power consumption of the customer power receiving facility 201 is increased. Note that such control of the amount of generated power and the amount of power consumption may be performed simultaneously or only for one of them. Therefore,
When the control of the generated power is not performed, the private power generator 21
7 may be omitted.

As described above, the customer system 210
Can receive power by the power reception control unit 216 so as to match the power reception plan, so that the power retailer system 100 does not need to consider the demand fluctuation in the current customer system 210 on the day. Therefore, in the customer system 210, the power receiving process data communication unit 21
3, there is no need to send data at 5 minute intervals, for example,
Before the supply and demand plan is created in the electric power retailer system 100, it is sufficient to transmit, for example, data accumulated only once a day. Then, there is no need to secure a dedicated communication line and perform frequent communication, and it is possible to greatly reduce communication costs.

Further, when performing the same-amount control on the day in the electric power retailer system 100, the control may be performed on the assumption that the electric power received by the customer system 210 matches the electric power receiving plan. That is, the electric power retailer system 100 further adds, to the data actually measured in the consumer system 200 in FIG. 3, the demand forecast amount indicated in the power receiving plan corresponding to the consumer system 210, What is necessary is just to calculate the total power consumption. Therefore, assuming that the demand fluctuation amount (fluctuation width) of each customer system is substantially equal, the ratio occupied by the customer system 210 is as shown in FIG.
As the number is larger than that of the customer system 200, the amount of change in demand can be reduced. Therefore, in the power generation company system 400, it is possible to reduce the number or the load of the adjusting generators used for the simultaneous same amount control.

The overall system of the electric power retail business according to the present embodiment is the same as the above-described customer system 210 and FIG.
In the above description, the customer systems 200 are provided, but all the customer systems may be the customer systems 210. With that configuration,
Since there is no need to perform the same amount control at the same time in the entire system of the electric power retail business, costs can be significantly reduced. In addition, the private power generator 217 included in the customer system 210 is set to a predetermined output (typically, a maximum output).
, The power obtained beyond the power receiving plan can be used as power for supply. In such a case, the customer system 210 also plays the role of the power generation company system 400.

(Third Embodiment) In the system of the entire electric power retailing business according to the third embodiment of the present invention, the first
Alternatively, the pool market is further considered in the system of the entire electric power retail business according to the second embodiment. Here, the pool market refers to a market system that bids on the future or present amount of power consumption or generation at the desired price per unit time, such as the next day, on the assumption that the buying and selling of power is liberalized. . Typically, in the pool market, the pool market system owned by the pool market manager posts the desired power consumption and its price or the amount of power supply and its price, respectively, and communicates with the power demander by a method such as bidding. Conclude a sales contract with the supplier.

FIG. 5 is a schematic diagram showing an operation example of a system of the entire electric power retail business according to the third embodiment of the present invention on the premise of the existence of such a pool market. In FIG. 5, the system of the entire electric power retail business further includes a pool market system 700 in addition to the respective systems of FIG. Therefore, a description of the same configuration and operation as in FIG. 2 will be omitted.

In FIG. 5, a power retailer system 1
00 monitors the pool price in the pool market and 30
When creating a power generation plan by performing a demand-supply adjustment calculation such that the demand and the supply match every minute, the demand or supply in the pool market is taken into consideration, and a sales contract is established if necessary (S2 '). ). After executing the plan, the actually used or supplied power is read in the pool market system 700, and the power retailer system 100 is notified of the meter reading result (S5 '). Then, based on the meter reading report,
The electric power retailer system 100 calculates a fee and performs a settlement process on the pool market system 700 (S
9 ').

The detailed configuration for realizing the above operation is as described with reference to FIG.
Specifically, the predetermined power generation amount and price posted in the pool market system 700 can be regarded as a generator that generates a predetermined power generation amount at a predetermined price only at a corresponding time. Similarly, the predetermined demand and price posted in the pool market system 700 are also:
It can be equated with a customer. Therefore, the operation of the supply and demand adjustment unit 115 in FIG. 3 described above can be considered almost the same as the operation in the first embodiment.
Of course, in order to monitor the pool price and conclude a sales contract, a component such as a pool market handling unit (not shown) is required.

As described above, in the present embodiment, the power pool market can be considered in addition to the fixed customers and the power generation companies, so that the supply and demand adjustment can be made more flexibly to adjust the supply and demand. An information system for a power retail business that can be performed can be constructed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a system configuration of an entire electric power retailing business according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating an operation example of a system of the entire electric power retailing business according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a detailed configuration of each system included in the entire power retail business system.

FIG. 4 is a block diagram illustrating a configuration of a customer system 210 included in a system of an entire electric power retailing business according to a second embodiment of the present invention.

FIG. 5 is a schematic diagram showing an operation example of a system of an entire electric power retail business according to a third embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Power retailer system 101 Power reception result management database 102 Customer management database 103 Charge system database 104 Generator management database 105 Power generation result management database 110 Power reception process data management unit 111 Received power history management unit 112 Customer billing processing unit 113 Demand forecast Unit 114 Power receiving planning unit 115 Supply and demand adjustment unit 116 Constraint condition processing unit 117 Charge management unit 120 Power generation process data management unit 121 Generated power performance management unit 122 Power generation company billing processing unit 123 Simultaneous same amount control unit 124 Power generation planning unit 200 Customer System 201 Customer power receiving facility 202 Power receiving metering unit 203 Power receiving process data communication unit 204 Power receiving plan application unit 205 Customer request receiving unit 210 Customer system 213 Power receiving process data communication unit 14 Power receiving plan application unit 216 Power receiving control unit 217 Private power generator 300 Power company system 301 Power system management unit 400 Power generation company system 401 Power generator 402 Power generation metering unit 403 Power generation process data communication unit 404 Power generation plan adjustment unit 405 Power generation company Report receiving unit 500 Power system network 600 Internet 700 Pool market system 2001 First consumer system 2002 Second consumer system 2003 Third consumer system 4001 First electricity supplier system 4002 Second electricity supplier system 4003 Third power generation company system

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Sakai Hikami 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi Inside Osaka Gas Co., Ltd. (72) Inventor Kawa-Saki ▼ Saiji 4-chome, Hirano-cho, Chuo-ku, Osaka-shi No. 1-2 F-term in Osaka Gas Co., Ltd. (Reference) 5B049 BB00 CC05 CC08 CC11 EE31 5G066 AA02 AA05 AA20 AE03 AE07 AE09 JA07 JB10

Claims (7)

[Claims] 1. An electric power retailing system for an electric power retailer to purchase electric power from a power generator and retail the electric power to a consumer who consumes the electric power, wherein the electric power retailer is provided on the electric power retailer side. Power system, a power generation system provided on the power generation side, and a customer system provided on the customer side, the power retailer system, the power generation system, and the customer The power retailer system is connected to the system by a network for mutually communicating information, and the power retailer system calculates a future demand forecast value from past power consumption in the customer system and creates a power receiving plan. Then, the power reception plan created via the network is notified to the customer system, and the customer system is the power retailer system or Modify or approve the notified power receiving plan, and notify the power retailer system via the network, the power retailer system is based on the power receiving plan corrected or approved by the customer system. Create a power generation plan, and notify the power generation company system via the network, the power generation system controls the amount of power generation based on the power generation plan notified from the power retailer system Notifying the power generation amount to the power retailer system via the network, the customer system notifies the power retailer system of the amount of power consumed via the network, the power retail business User system, the total power consumption calculated based on the power consumption notified from the consumer system, The power generation plan is corrected so that the total power generation amount calculated based on the power generation amount notified from the power generation company system is equal to each other, and the power generation plan corrected via the network is generated by the power generation company system. A power retailing system, characterized by notifying to a power retailer. 2. The electric power retailing system according to claim 1, wherein a part or all of electric power for purchase and / or retailing by the electric power retailer is traded through a pool market. . 3. The power retailer system includes: a power reception process data management unit that receives power consumption measured in the customer system; and a power reception result management that stores the received power consumption together with a corresponding time. A database, a demand forecasting unit that calculates the demand forecast value with reference to the power receiving performance management database, and creates the power receiving plan based on the demand forecast value, presents the plan to the customer system, and approves the plan. Or a power receiving planning means to be corrected, a generator management database storing the generator characteristics of the power generation company system, and a condition that the power generation characteristics stored in the generator management database match the demand amount. A supply and demand coordinator who creates or modifies the power generation plan so that a corresponding amount of power can be obtained at a minimum cost. Power generation planning means for notifying the power generation system to the power generation system and adjusting the amount of power supply, and power generation process data management means for receiving the supplied power amount measured in the power generation system And a power generation performance management database that accumulates the received supply power amount with the corresponding time, wherein the supply and demand adjustment unit refers to the power reception plan created by the customer when creating the power generation plan. Determining the power generation amount of the power generation company system so that the power supply amount corresponding to the predicted demand amount can be obtained at the minimum cost; and when correcting the power generation plan, the power reception process data management. Modified so that power equal to the total power consumption calculated based on the power consumption received by the means can be obtained at the minimum cost. Characterized by re-determining the power generation amount of the power producers system Rukoto is allowed, the power retail system of claim 1. 4. The customer system, comprising: a customer power receiving facility that consumes power; a power receiving metering unit that measures an amount of power consumed by the customer power receiving facility; Power receiving process data communication means for transmitting the power consumption to the power retailer system, and power receiving plan application means for receiving and presenting the power receiving plan from the power retailer system and creating the power receiving plan. 2. The electric power retail system according to 1. 5. A plurality of customer systems are provided, and at least one of the customer systems is configured to have an amount of power consumed in the customer power receiving equipment so as to match a predicted demand value in the power receiving plan. The power retailing system according to claim 4, further comprising a power receiving control unit that controls the power retailing. 6. The plurality of customer systems are provided, and at least one of the customer systems is consumed by a private power generator that supplies power to the customer power receiving facility, and the customer power receiving facility. Power receiving control means for controlling the amount of power generated by the private power generator so that a value obtained by subtracting the amount of power supplied by the private power generator from the amount of power matches the predicted demand value in the power receiving plan. The electric power retailing system according to claim 4, wherein: 7. The power generation company system includes: a generator for supplying power; a power generation metering unit for measuring an amount of power supplied by the generator; and a power supply amount measured by the power generation metering unit. Power generation process data communication means for transmitting to the power retailer system, receiving the power generation plan transmitted from the power retailer system, and controlling the generator to correspond to the received power generation plan The power retailing system according to claim 1, further comprising: