JP2002354667A - Power distribution system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power distribution system, which can receive supply of electric power generated by a power generating method, which a customer desires. SOLUTION: A distribution server 14 of a distribution company A, a user's PC 16 of a customer, a power company's PC 18a of a power company A, a power company's PC 18b of a power company B, and a distribution server 22 of the other distribution company B are connected to a communication network 12. The customer accesses the distribution server 14 using the user's PC 16, and designates the power generating method which the customer wishes with the order of priority. The power generating method which the customer desires and the order of priority are recorded in a register database which the distribution server 14 has, and are transmitted to the power company's PCs 18a and 18b of the power companies. The power company supplies the power generated with the desired power generating method to the customer. When the electric power supply with the designated power generating method is impossible, the power which the distribution company B essentially supplies to its distribution system is supplied to the customer, upon interconnecting with the distribution system of the distribution company B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power distribution system, and more particularly to, for example, power generated by a plurality of power generation methods from a plurality of power plants each generating power of a different type to a customer through a transmission system. It relates to a power distribution system to supply.

[0002]

2. Description of the Related Art In a conventional power distribution system of this type, FIG.
As shown in (1), the power generated by the power plant is transmitted to the customer via a predetermined substation and a transmission system. At each power station, photovoltaic power generation, nuclear power generation, thermal power generation, and the like are performed. Currently, nuclear power generation, thermal power generation, and the like are inexpensive, and solar power generation is at high cost.

[0003]

[Problems to be solved by the invention] In modern society,
With the diversification of customer awareness progressing, some customers are cost-first, while others are environmentally-friendly, considering the impact of the power generation method on the natural environment. Cost-first customers want to supply electricity from nuclear power and thermal power, while environmental-first customers want to supply electricity from solar and wind power.

However, in the conventional power distribution system, since the power transmission system is predetermined, it has not been possible to meet such a customer's request.

[0005] Therefore, a main object of the present invention is to provide a power distribution system capable of supplying power generated by a desired power generation method to a customer according to the request of the customer.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a power distribution system for supplying power generated by a plurality of power generation methods to a customer through a transmission system from a plurality of power plants, each of which generates power by a different type of power generation method. Registering means for registering a power generation method desired by the customer, accumulating means for accumulating the power consumption for each power generation method registered in the registration means, and requesting a charge for the electric energy accumulated by the accumulating means. A power distribution system comprising means.

[0007]

According to the present invention, the power generated by the type of power generation desired by the customer is supplied to the customer. That is, the type of power generation method desired by the customer is registered in the registration means, and the power generated by the registered power generation method is supplied to the customer. The accumulating means accumulates the electric power used for each power generation type registered in the registering means, and the billing means bills for the electric power accumulated by the accumulating means.

In a preferred embodiment, the priority of the power generation method desired by the customer is registered in the registration means, and the power generated by the power generation method with a higher priority is supplied to the customer.

In another preferred embodiment, the power supply amount desired by the customer is registered in the registration means for each power generation method, and the power generated by each power generation method is supplied by the registered supply amount. Also in this case, it is preferable to give a priority to the power generation method.

[0010] In another aspect of the present invention, in order to supply power generated by a requested power generation method, power that is originally supplied by another power distribution system in connection with another power distribution system is supplied to the power distribution system. Supply to customers.

The types of power generation methods include power generation by natural energy sources such as solar power generation and wind power generation.

[0012]

According to the present invention, the type of power generation method is registered in the registration means, and the power generated by the registered power generation method is supplied to the customer. Therefore, the customer can receive the power generated by his / her favorite power generation method.

[0013] As a result, a consumer who is conscious of environmental protection can satisfy the customer's environmental consciousness by registering the supply of power by solar power generation or wind power generation as a type of power generation method, and can attain the consciousness of the environment. Can be further enhanced.

On the other hand, a customer who gives priority to cost can suppress the electricity bill by registering power supply by thermal power generation or nuclear power generation, which is relatively inexpensive at present as a type of power generation method.

[0015] In general, the amount of power demand reaches a peak in summer due to the use of cooling equipment and the like. In a conventional power distribution system that does not include photovoltaic power generation, it is necessary to increase the number of thermal power plants and nuclear power plants to cope with such an increase in the amount of power demand in summer. This additional power plant became a surplus facility in winter or the like where the amount of demand for electricity is relatively small, resulting in inefficiency in terms of capital investment, and this also led to an increase in cost.

However, in the power distribution system of the present invention in which photovoltaic power generation is incorporated into the system, the amount of power generated by photovoltaic power varies according to the amount of solar radiation. Therefore, the amount of generated power increases in summer when the amount of solar radiation is large, and it is possible to cope with the peak of the amount of demanded power in summer, so that it is possible to suppress the addition of a power plant for securing peak power. This results in cost reduction.

Further, from the viewpoint of preventing global warming, by giving priority to the supply of power generated by natural energy in the power distribution system, power generation using fossil fuels is suppressed, and the generation of carbon dioxide is reduced. Can be suppressed. By suppressing the generated carbon dioxide, it is possible to obtain the same effect as the effect of planting trees necessary for absorbing the suppressed amount of carbon dioxide.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0019]

[Embodiment 1] Referring to FIG. 2, a power transmission system in which a power distribution system of this embodiment is realized includes a power plant a for performing nuclear power generation and thermal power generation and a power plant b for performing solar power generation.
Includes multiple power plants. The power generated by the power plants a and b is supplied to the customer via the power transmission system. The power generated by the power plant a is supplied to the customer 1 via the substations 3, 5, and 7. The power generated by the power plant b is supplied to the customer 1 via the power plant 5 and the power plant 7.

Referring to FIG. 3, power distribution system 10 of this embodiment includes a power distribution server 14 managed by power distribution company A that manages power distribution system 10, and power distribution server 14 is connected to communication network 12 such as the Internet. You. The power distribution server 14 includes a registration database 20 in which power supply modes are registered.

The communication network 12 includes a user PC 16 of a customer who receives power supply and a power company P of the power company A.
C18a, the power company PC 18b of the power company B and the power distribution server 22 of another power company B are further connected, and the communication network 12 is connected between the power distribution server 14, the user PC 16, the power company PC 18a, the power company PC 18b, and the power distribution server 22. It is possible to exchange data via the Internet.

The electric power companies A and B generate electric power by various power generation methods, respectively. The electric power distribution companies A and B use the electric power generated by the electric power companies A and B in their own transmission systems. Is a company that distributes power to customers. For example, power distribution company A mainly distributes power generated by power company A to customers, and power distribution company B mainly distributes power generated by power company B to customers. Although the power transmission system of the power distribution company A and the power transmission system of the power distribution company B are independent of each other, they can exchange with each other. That is, the power distribution company A can supply the power generated by the power company B to the customer as needed, in connection with the power distribution company B.

FIG. 3 shows one user PC 16 of the customer.
Although only one is shown, user PCs of a plurality of customers are connected to the communication network 12. Similarly, the power company PC of the power company is not limited to the two power company PCs 18a and 18b, and a large number of power company PCs may be connected. The same applies to the PC of the distribution company.

In the power distribution system 10 of this embodiment, a customer accesses the power distribution server 14 using the user PC 16 to make a power supply contract. Then, the contents of the contract are transmitted from the power distribution server 14 to the power company PCs 18a and 1 of the power company.
8b. The customer can specify the type of power generation method of the supplied power with priority. Therefore, the customer can receive the power generated by the desired power generation method.

The operation of the power supply contract will be described with reference to FIGS. When the customer accesses the power distribution server 14, first, the screen display data is transmitted from the power distribution server 14 to the user PC 16, and in FIG.
Is displayed on the monitor of the user PC 16.

If "No" is checked on the contract acceptance / rejection screen and the transmission button is selected, the power distribution contract is canceled. When "Yes" is checked on the contract acceptance / rejection screen and the send button is selected, it is determined that a contract is made in step S3.
Then, the screen display data is transmitted from the power distribution server 14 to the user PC 16, and in step S5, the customer information (name, mail address, address, telephone number (home / work)) and the credit number input screen as shown in FIG. It is displayed on the monitor of the PC 16.

When the user inputs the customer information and the credit number and selects the transmission button, the customer information and the credit number are transmitted from the user PC 16 to the power distribution server 14. Then, it is determined whether or not the customer information has been properly input in step S7, and if it is determined that the customer information has been appropriately input, it is determined in step S9 whether the credit number is valid. If it is determined that the customer information or the credit number is not appropriate, the process returns to step S5 and a message to that effect is displayed and the customer information and the credit number are again displayed.
A credit number input screen is displayed on the monitor of the user PC 16.

When it is determined that both the customer information and the credit number are valid, the power distribution server 14
The screen display data is transmitted to the PC 16, and the power information and priority order input screen as shown in FIG. 7 is displayed on the monitor of the user PC 16 in step S 11.

The user operates the pull-down menu,
The type of power generation method desired to be supplied is specified for each priority. For example, solar power generation is designated as priority 1, nuclear power is designated as priority 2, and thermal power generation is designated as priority 3. When the transmission button is selected, the type and priority of the power generation method are transmitted to the power distribution server 14.

In step S13, it is determined whether the type and priority of the power generation method of the transmitted power are appropriate. If not, the flow returns to step S11 to display the power information and priority input screen again. I do. If it is determined that the type and priority of the power generation method are appropriate, the type and priority of the power generation method are registered in the registration database 20 together with the customer information in step S15.

Then, in step S17, the power company PC of the power company that is generating power by the power generation method requested to be supplied.
A power supply request is transmitted to 18a or 18b. The electric power company generates electric power of the specified power generation type based on the supply request.

Next, referring to FIG.
Will be described when supplying power to a customer. First,
In step S51, the power generation method of the supplied power is determined with reference to the registration database 20. At this time, the power generation method is determined according to the priority order of the power generation methods registered in the registration database 20. Therefore, in the first step S51, the power generation method that supplies the power generation method with the highest priority is determined.

In step S53, it is determined whether or not the power by the determined power generation method is currently available. If it is determined that power can be supplied by the determined power generation method, power supply to the customer is started in step S55, and in step S57, the supplied power supply amount is accumulated for each power generation method and registered in the registration database. Record at 20. Then, the process returns to step S53.

On the other hand, if it is determined in step S53 that power cannot be supplied by the determined power generation method,
In step S59, an inquiry is made to the power distribution server 22 of another power distribution company, for example, the power distribution company B (FIG. 3), as to whether power supply by the determined power generation method is possible. Then, in step S61, based on the response from the power distribution server 22, it is determined whether the power transmission system of the power distribution company B can supply power by the determined power generation method. If it is determined that power supply is possible, supply of power to the customer is started in step S63, and in step S57,
The amount of supplied power is accumulated for each power generation method and recorded in the registration database 20. Then, the process returns to step S53.

On the other hand, in step S61, when it is determined that the power supply of the power distribution system of the distribution company B is not possible by the determined power generation method, the process returns to step S51, and the power generation method of the next priority is selected by the customer. Is determined as a method of generating power to be supplied to the vehicle. Then, the processing after step S53 is repeated.

In this way, the power generated by the power generation method with a higher priority is supplied to the customer.

Next, the operation of the power distribution server 14 for billing the supplied power will be described with reference to FIGS. 9 to 12. First, in step S31, the monthly power rate is accumulated for each type of power generation, and the total of the power rates of each power generation method is obtained. Then, when the customer accesses the power distribution server 14 using the user PC 16, screen display data is transmitted from the power distribution server 14 to the user PC 16, and in step S33, a power billing screen as shown in FIGS. Display on the monitor.

First, the electric power bill is displayed on the electric bill screen as shown in FIG. This power rate display includes a power rate and a total rate for each power generation method. When the user selects the tribute button, a screen as shown in FIG. 11 is displayed. The user can select “YE
Agree to pay for the fee by checking "S". If you do not agree with the payment of the fee, check "NO". Then, when the transmission button is selected, the check result of the check button is transmitted to the power distribution server 14.

If the check result of the check button indicates the agreement of the payment, it is determined that the payment is approved in step S35, and the fee is debited in step S41.

Next, the screen display data is transmitted to the power distribution server 14.
To the user PC 16, and in step S43, displays a contract continuation / cancel screen as shown in FIG.
It is displayed on the monitor of C16. The user agrees to continue the contract by checking "YES" on this screen. On the other hand, when canceling the contract, "NO"
Check. Then, when the transmission button is selected, the check result of the check button is transmitted to the power distribution server 14.

Then, in a step S45, it is determined whether or not the check result of the check button indicates the continuation of the contract. If it is determined that the check result of the check button indicates that the contract has been canceled, the registration data of the customer registered in the registration database 20 is deleted in step S47. On the other hand, if it is determined that the check result of the check button indicates the continuation of the contract, the processing is terminated as it is.

If it is determined in step S35 that the check result of the check button does not agree with the payment, a mail transmission form (not shown) is displayed on the user's user PC 16 in step S37 to accept the contact. In the case where the abnormality of the billing fee is obvious or the priority order of the supplied power is different from the contract, the customer uses this e-mail transmission form to inform the power distribution server 14 of the reason for not agreeing to the payment of the fee and the state of the abnormality. contact. Then, in step S39, the operator or the like of the power distribution server 14 investigates and adjusts the fee, and returns to step S33. Note that these billing processes are executed once a month, for example, at the end of the month.

As described above, according to the power distribution system 10 of this embodiment, the customer can generate the desired power generation method,
For example, power generated by solar power generation can be supplied. In addition, it is possible to prioritize the desired power generation method and receive the power generated by the desired power generation method. Further, a contract for power supply, payment of a power supply fee, and the like can be made through a computer.

The above-described embodiment can be modified and implemented as appropriate. For example, in the above-described example, the power fee is paid in a lump sum of the power generated by a plurality of power generation methods. However, instead of this, the power fee may be paid for each power generation method. [Second Embodiment] In the power distribution system 10 of the first embodiment, power is supplied in descending order of priority. Therefore, in some cases, only power generated by one power generation method may be supplied. In the power distribution system 10 according to the second embodiment, the customer specifies the priority of the power generation method and the amount of power supply for each power generation method, and supplies the power generated by each power generation method in the order of higher priority in the specified supply amount. I do. When the power consumption of the customer exceeds the sum of the contracted power supply, the power exceeding the sum of the supplied power has a higher priority and is supplied with the power generated by the power generation method that can be supplied.

In this case, in step S11 in FIG. 4, instead of the power information / priority input screen shown in FIG. 7, the power information / supplied power input screen shown in FIG.
6 is displayed on the monitor. The customer operates the pull-down menu to specify the priority of the desired power generation method and the amount of supplied power. When the transmission button is selected, the priority of the power generation method and the supplied power amount are transmitted to the power distribution server 14.
The operation of other power supply contracts is described in FIG.
And the other description is omitted.

Next, referring to FIG.
The operation when 0 supplies power to the customer will be described. First, in step S71, a power generation method of power to be supplied is determined with reference to the registration database 20. At this time,
The power generation method is determined in descending order of priority registered in the registration database 20.

In step S73, it is determined whether the power supply by the determined power generation method is less than the supply amount by the power generation method contracted with the customer. If it is determined that the power supply by the power generation method is less than the supply amount specified by the contract, in step S77, it is determined whether the power by the determined power generation method is currently available. If it is determined that power can be supplied by the determined power generation method, power supply to the customer is started in step S79, and step S81 is performed.
, The amount of supplied power is accumulated for each power generation method and recorded in the registration database 20. Then, the process returns to step S73.

On the other hand, if it is determined in step S77 that power cannot be supplied by the determined power generation method,
In step S83, an inquiry is made to the power distribution server 22 of another power distribution company, for example, the power distribution company B (FIG. 3), as to whether power supply by the determined power generation method is possible. In step S85, based on the response from the power distribution server 22, it is determined whether the power transmission system of the power distribution company B can supply power by the determined power generation method. If it is determined that power supply is possible, supply of power to the customer is started in step S87, and in step S81,
The amount of supplied power is accumulated for each power generation method and recorded in the registration database 20. Then, the process returns to step S73.

On the other hand, if it is determined in step S85 that the power supply system of the power distribution company B cannot supply power using the determined power generation method, the process returns to step S71 to supply the power generation method having the next highest priority. The power generation method to be used. Then, the processing after step S73 is repeated.

If it is determined in step S73 that the amount of power supplied by the power generation method is equal to or greater than the amount of power supplied by the power generation method specified by the customer, the flow proceeds to step S73.
At 75, it is determined whether or not the total amount of power supply so far, that is, whether or not the customer's power consumption exceeds the total of the power supply amount in each power generation method specified by the customer (referred to as "contract supply amount"). to decide. If it is determined that the total power supply does not exceed the contracted supply, the process returns to step S71 to determine the power generation method to supply the power generation method having the next highest priority. On the other hand, if it is determined that the total power supply exceeds the contract supply, in step S77,
It is determined whether the power generated by the power generation method can be supplied.

As described above, power can be supplied if power can be supplied, and if power cannot be supplied, power generated by the power generation method can be supplied to another power distribution company. Ask if it is.

As described above, the priority order of the power generation methods and the supply amount of the power generated by each power generation method are specified by the contract, and the power generated by the specified power generation method is supplied to the customer in the specified amount. . Then, when the power consumption of the customer exceeds the contracted supply amount, the power generated by the power generation method with a higher priority is supplied.

The operation of billing the supplied power performed by the power distribution server 14 is the same as that described with reference to FIGS. 9 to 12 described in the first embodiment, and therefore, redundant description will be omitted.

As described above, according to the power distribution system 10 of this embodiment, the customer specifies the priority order of the power generation methods and the supply amount of the power generated by each power generation method, and the power is generated by the specified power generation method. Can receive the specified amount of power. For this reason, carbon dioxide is not generated, but the priority of solar power generation, which is still expensive at present, is set high, and if contracts with appropriate settings for the amount of power generated by solar power generation are made, contracting environmental issues Cost can be reduced while contributing to improvement.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing a power transmission system of a conventional power distribution system.

FIG. 2 is an illustrative view showing a power transmission system of a power distribution system according to an embodiment of the present invention;

FIG. 3 is a schematic block diagram of a power distribution system in the embodiment of FIG.

FIG. 4 is a flowchart showing an operation of a power distribution server when a power distribution contract is made in the embodiment of FIG. 2;

FIG. 5 is an illustrative view showing one example of an input screen in FIG. 4;

FIG. 6 is an illustrative view showing one example of an input screen in FIG. 4;

FIG. 7 is an illustrative view showing one example of an input screen in FIG. 4;

FIG. 8 is a flowchart showing an operation of the power distribution server for supplying power in the embodiment of FIG. 2;

FIG. 9 is a flowchart showing the operation of a power distribution server for charging a fee in the embodiment of FIG. 2;

FIG. 10 is an illustrative view showing one example of a display screen in FIG. 8;

FIG. 11 is an illustrative view showing one example of a display screen in FIG. 8;

FIG. 12 is an illustrative view showing one example of a display screen in FIG. 8;

FIG. 13 is an illustrative view showing one example of an input screen in FIG. 4;

FIG. 14 is a flowchart illustrating the operation of a power distribution server that supplies power in another embodiment.

[Explanation of symbols]

 Reference Signs List 10 power distribution system 12 network 14 power distribution server 16 user PC 18a power company PC 18b power company PC 20 registration database 22 power distribution server

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ryuzo Hagiwara 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in SANYO Electric Co., Ltd. 5G066 AA20 AE03 AE09 HA17 HB02

Claims (5)

[Claims] 1. A power distribution system for supplying power generated by a plurality of power generation methods to a customer through a transmission system from a plurality of power plants each generating power by a different type of power generation method, wherein Registering means for registering a power generation method of power to be generated, accumulating means for accumulating power consumption for each power generation method registered in the registration means, and billing means for charging a charge for the electric energy accumulated by the accumulating means. system. 2. The power distribution system according to claim 1, wherein said registering means includes priority order registering means for registering a priority order of a desired power generation method. 3. The registration means includes a supply amount registration means for registering a desired power supply amount for each power generation method.
Or the power distribution system according to 2. 4. The power distribution according to claim 1, further comprising interconnection means for interconnecting with another power distribution system and supplying power originally supplied by said another power distribution system to a customer. system. 5. The power distribution system according to claim 1, wherein the power generation method includes a power generation method using a natural energy source such as solar power generation or wind power generation.