JP5707050B2 - Virtual energy trading system - Google Patents

Description

  The present invention relates to a virtual energy trading system capable of efficiently managing and allocating electric power intensively by a virtual energy communication provider having various types of power supply sources.

  Conventional power grids are based on the premise that a large amount of power from a large-scale power plant is distributed to a large number of small users such as households. It was not designed in consideration of the existence of a large power generation source. Therefore, there is a possibility that power transmission over a long distance may be performed to a power generation source with a small power generation scale, and there is a problem that power transmission loss due to long distance power transmission occurs.

  In addition, systems for supplying power between a plurality of power generation companies and a plurality of consumers have been proposed (Patent Documents 1 and 2).

JP 2000-333369 A JP 2002-123578 A

  Therefore, the present invention optimizes the transmission loss of the entire power grid and maximizes the power generation capability of the power supply source by performing power distribution based on the nature of the power supply source and power consumption source that have not been considered in the past. The purpose is to provide a virtual energy trading system that can be used effectively.

In order to solve the above problems, a virtual energy trading system of the present invention includes a power transmission network managed by a power network operator, a power generation source connected to the power transmission network, a use source connected to the power transmission network, A virtual energy trading system including a smart meter connected to each of the power generation source and a use source and a virtual energy communication operator (EVNO) that controls the smart meter, wherein the power transmission network is divided into a plurality of areas. and, the virtual energy operators includes means for detecting a power usage request from use sources, depending on the power usage request from the use source, the distance between the power source and the use source, the nature of the power source And means for selecting an optimal power generation source based on the power supply capability, and a transmission request for the use source from the selected power generation source to the power network operator. Have a means for output, said means for selecting is to explore the power source in the same area as the use sources, when not found is to explore the power source of the adjacent areas.
The area is provided with an area broker that manages the power supply / demand situation in the area, and searches for the power generation in the adjacent area by making an inquiry to the area broker in the adjacent area.
Further , the power operator has means for billing the virtual energy communication provider according to the distance between the use source and the selected power generation source and the amount of transmitted power. is there.
Furthermore, there are a plurality of virtual energy telecommunications carriers, and power is traded between the plurality of virtual energy telecommunications carriers.
Furthermore, there are a plurality of virtual energy telecommunications carriers, and a trade center is provided for mediating power transactions between the plurality of virtual energy telecommunications carriers.

According to such a virtual energy trading system of the present invention, the virtual energy communication provider selects an optimal power generation source, and the actual power transmission is performed by the power company, whereby the distance between the power supply source and the power consumption destination In consideration of the above, it is possible to optimize the transmission loss of the entire power grid and maximize the power generation capacity of the power supply source.
In addition, from a power network of a power company, etc., to a user (home, office, etc.), a conventional power generation system such as a small-scale power source such as a solar power generation system or a small gas turbine is used. A new M: N type power network including power supply sources that have not been considered can be constructed.
In addition, a virtual energy telecommunications carrier can configure a virtual power plant that collects multiple energy sources such as EVs (electric vehicles) and solar power generation. Encourage free competition in power trading.

It is a figure which shows typically the outline | summary of the virtual energy trade system of this invention. It is a figure which shows the principal part structure of the apparatus of an electric power company, and the apparatus of an EVNO contractor. It is a figure for demonstrating operation | movement of the accounting process part in an electric power company. It is a figure for demonstrating the positional relationship of a power generation source and a use source. It is a figure which shows an example of an accounting table. It is a figure for demonstrating operation | movement of the charge process part in an electric power company when the area of a power generation source and a use source differs. It is a figure for demonstrating operation | movement of the optimal generation | occurrence | production power generation calculation part of an EVNO contractor. It is a figure for demonstrating embodiment which the area broker is provided for every area. It is a figure for demonstrating the selection method of the power generation source in embodiment of FIG. It is a figure which shows an example of a network structure when several EVNO exists. It is a figure which shows the principal part structure of several EVNO. It is a figure for demonstrating embodiment which provided the trade center which trades between EVNO.

FIG. 1 is a diagram schematically showing an outline of a virtual energy trading system of the present invention.
In this figure, reference numeral 1 denotes a system of a power transmission network operator (hereinafter referred to as “electric power company”), a power transmission network (network), a power company device that manages the power transmission network, a power generation source connected to the power transmission network, and Sources of use (customers) are included. There are various power generation sources such as a solar power generation system, a small gas turbine, and a fuel cell. A smart meter is attached to each power generation source and usage source. The smart meter is a function that outputs the power demand or the amount of suppliable power of the device to which it is installed as data at a fixed time interval and outputs it to the outside. It has a function to control the power supply to.

2 is a device of a virtual energy communication operator (EVNO: Energy Virtual Network Operator). This EVNO contractor's device 2 is connected to the power company's device through a control interface 3 and is connected to a smart meter attached to the power generation source and use source. Control the meter. In the following, in order to avoid complications, the device 2 of the EVNO dealer is simply referred to as the EVNO dealer 2, and the device of the power company in the system 1 of the power company is referred to as the power company 1.
In the figure, point A is a power generation source and point B is a use source. A smart meter 4 is attached to the power generation point A, and a smart meter 5 is attached to the use source B point. The smart meters 4 and 5 are connected to the EVNO dealer 2 as indicated by broken lines in the figure. Here, only point A and point B are shown, but actually, a large number of various types of power generation sources are connected to the power transmission network.

FIG. 2 is a diagram showing a main configuration of the electric power company 1 and the EVNO dealer 2. The electric power company 1 is provided with a power transmission network control unit 11 and a charging processing unit 12, and the EVNO contractor 2 includes a request receiving unit 21 that receives a power request from a smart meter, an optimum power generation calculation unit 22, and a charging process. A unit 23 and a smart meter control unit 24 are provided.
In the system configured as described above, the EVNO dealer 2 grasps the situation of points A and B in the network based on data transmitted from the smart meters 4 and 5. Here, it is assumed that the request receiving unit 21 of the EVNO dealer 2 is notified that the point B requires 10 kwh of power. This is notified by data from the smart meter 5 at point B.
At this time, the optimal power generation calculation unit 22
(1) Distance close to point B,
(2) Consider the nature of the power generation source (sunlight, gas, storage battery, etc.)
(3) Supply capacity,
The optimum power generation source is selected based on the above. Here, it is assumed that point A is selected.

The billing processing unit 23 of the EVNO dealer 2 sends a power transmission request of 10 kwh from the point A to the point B to the power company 1. The consumption time corresponding to the holding time can be realized by reporting in advance or by requesting disconnection when consumption is completed. Further, the smart meter control unit 24 transmits a control signal indicating that power should be supplied to the smart meter 4 at point A.
The electric power company 1 does not actually transmit power from point A to point B. Since at least the resources of the power transmission network are used in proportion to the distance, the amount of power, and the time, the corresponding amount is charged.
Thus, EVNO can minimize the power transmission cost by finding a point as short as possible, in this example, point A.

FIG. 3 is a diagram for explaining the operation of the billing processing unit 12 in the power company 1.
The charging processing unit 12 acquires information on point A (power generation), information on point B (usage source), and required power amount (W) from the power transmission request from the charging processing unit 23 of the EVNO contractor 2 (step) S1) The billing process is started (step S2). Then, the product of the distance (X) between the points A and B, the electric energy (W), and the count value of the time counter that counts the elapsed time is calculated until the consumption time is completed (steps S3 and S4), and the process ends. Then, the charge processing unit 23 of the EVNO dealer 2 is charged based on the calculation result (step S5). In this way, charging is performed according to the distance between the power generation source and the use source.

FIG. 4 is a diagram for explaining the positional relationship between point A (power generation source) and point B (usage source).
(A) is a case where A point and B point exist in the same area (area X), and corresponds to the case shown in FIG. (B) is a case where point A exists in region X and point B exists in region Y. As described above, the optimal power generation calculation unit 22 of the EVNO dealer 2 may select the points A and B existing in different areas.
An embodiment in which the cost to be paid to the electric power company 1 is different based on the distance between the regions when the regions are different as described above will be described. In this case, billing processing is performed using a billing table as shown in FIG.

FIG. 5 is a diagram illustrating an example of the accounting table 25. In the example shown in this figure, there are a city and a city, and the cost to be paid to the electric power company per unit time is determined based on the distance between the regions. The area X is in the city, and the unit price is 10 yen, but the Y area outside the city is 50 yen, and the Z area is 70 yen.
FIG. 6 is a flowchart showing the flow of charging processing in the charging processing unit 12 of the power company 1 in this case. Here, it is assumed that the point A (power generation source) is in the region X and the point B (usage source) is in the region Y as in the case (b) of FIG.

The information of the area information (X) of point A, the area information (Y) of point B, and the information on the required electric energy (W) is acquired (step S11), and the unit price ( In this case, the product of 50 yen), the electric energy (W) and the count value of the time counter that counts the elapsed time is calculated until the consumption time ends (steps S12 and S13). Billing is made to the billing processing unit 23 of the EVNO dealer 2 (step S14).
In this way, the cost is determined from the billing table based on the area information of points A and B, and is paid to the power company. Even in this case, the actual power is not actually transmitted from the point A to the point B, but a combination that is highly likely to use the resources of the power transmission system for a long time is expensive.

FIG. 7 is a diagram for explaining the processing in the optimal power generation calculation unit 22 of the EVNO dealer 2.
From the power request from a certain source B point (this is the same whether it is determined on-demand or from the situation of reading a smart meter), the position coordinates of B point, the required power amount and the approximate time required for power Information is acquired (step S21). The optimal power generation power calculation unit 22 is provided with a power generation power table 26. As shown in the figure, the power generation power table 26 shows the current power generation capacity (surplus capacity), unit price (this) for each power generation power source subscribed to EVNO. Can be determined in consideration of resource cleanliness, etc.) and coordinates (positions) are defined.
By referring to the power generation table 26 based on the information acquired in step S21, a power generation source candidate that supplies power to the use source B can be acquired (step 22). (Cost to pay) is calculated (step S23), an operation for obtaining a minimum value is performed (step S24), and a virtual connection is requested to the electric power company (step S25). That is, a power transmission request from the selected power generation source to the requested use source is sent to the billing processing unit 12 of the power company 1.
As described above, the power generation source having the minimum price is selected with reference to the power generation table.

Next, another embodiment of the present invention will be described. In this embodiment, an EVNO contractor 2 is provided with an area broker for managing the power supply / demand situation in each area for each area, and exchanges between the area brokers are carried out between the areas. It is made like that.
FIG. 8 is a diagram showing the configuration of the main part of this embodiment. As shown in this figure, in this embodiment, area brokers 41, 42, 43 are provided for each of the areas 31, 32, 33 obtained by dividing the network (power transmission network). Each area broker 41, 42, 43 is connected to a power source belonging to each area and a smart meter attached to a use source, as indicated by broken lines in the figure. Each area broker is provided with a request reception unit and an optimum power generation calculation unit that receive a power use request from a use source in the area.

FIG. 9 is a diagram for explaining a method of determining a power generation when the use source and the power generation span between areas, which are executed by the optimum power generation calculation unit provided in the area broker.
Within each area broker, an in-area power generation table (in-area power generation list) in which the current power generation capacity (surplus capacity), unit price and coordinates (position) are defined for each power generation in its own area (city area). ) 44 is provided.

When a power usage request (Wkw, h hours) is received from point B in the own area (city area) (step S31), the power generation candidates in the city area are selected by referring to the power generation list 44 in the own area. Search is performed (step S32). As a result, when the optimum power generation point A is found, the logical connection between the points A and B is performed (step S33). If not found, supply candidate search processing in the adjacent area is started (step S34), and an inquiry is made to the area broker in the adjacent area (step S35). Upon receiving the inquiry, the area broker searches the power generation table that satisfies the request with reference to the power generation table in its own area. When a candidate for the power generation is found in the inquired area broker (step S36), the process proceeds to step S33, and the logical connection between the points A and B is performed. If not found, a virtual connection is requested to the electric power company (step S37).
As described above, when there is no optimal power generation source in the city area, an inquiry is made to an adjacent area broker, and when a candidate is found, supply from the adjacent area is performed.

There is not always one EVNO in a network. An embodiment having a plurality of EVNOs will be described. In this case, electric power can be traded between a plurality of EVNOs.
FIG. 10 shows a network configuration when a plurality of EVNOs exist in one network, and FIG. 11 shows a main configuration of the EVNO.
In this figure, 50 is a power transmission network, and 60 and 70 are EVNOs. A plurality of power generation sources or use sources 51 to 54 exist in the power transmission network 50, the power generation sources 51 and 53 are connected to the EVNO 60, and the power generation sources 52 and 54 are connected to the EVNO 70. Moreover, between EVNO60 and 70, it is connected to Piartupia.

As shown in FIG. 11, a control unit 61, a selling price table 62, a purchase price table 63, and a power source monitor unit are provided in the EVNO 60. Similarly, in the EVNO 70, a control unit 71, a selling price table 72, A purchase price table 73 and a power source monitor unit are provided.
The control units 61 and 71 in the EVNOs 60 and 70 have the status of the power generation resource in the own EVNO and the status of the use source when necessary. The selling price tables 62 and 72 store price information when selling the power of the power source in the own EVNO, and the buying price tables 63 and 73 are prices when purchasing power from the power source in the other EVNO. Is stored. If there is a surplus in generating power, the price of energy will be lowered. If the supply is tight, the purchase price is raised. Between the control units, it is possible to request the supply of resources to other EVNOs, or conversely sell electric power.

FIG. 12 is a diagram showing a configuration example of still another embodiment of the present invention.
As shown in the figure, in this embodiment, a trade center 90 is provided for mediating a power transaction between the three EVNOs EVNOs 60, 70 and 80.
The control units 61, 71, and 81 of each EVNO trade with the trade center 90 by offering the selling price and quantity to the selling information processing section 91 and the buying price and quantity to the buying information processing section 92, respectively. .
As described above, when the number of EVNOs is large, it is possible to easily trade electric power by providing the trade center 90.

  1: Electric power transmission network operator (electric power company), 2: EVNO (virtual energy communication operator), 3: Control interface, 4, 5: Smart meter, 11: Transmission network control unit, 12: Billing processing unit, 21: Request receiving unit, 22: optimal power generation calculation unit, 23: billing processing unit, 24: smart meter control unit, 25: billing table, 26: power generation table, 31, 32, 33: area, 41, 42, 43: Area broker, 44: Power generation list in area, 50: Transmission network, 51, 52, 53, 54: Power generation, 60, 70, 80: EVNO, 61, 71, 81: Control unit, 62, 72, 82: Sales price Table, 63, 73, 83: Purchase price table, 64, 74: Power source monitor unit, 90: Trade center

Claims (5)

A power transmission network managed by a power network operator, a power generation source connected to the power transmission network, a use source connected to the power transmission network, a smart meter connected to each of the power generation source and the use source, and the smart A virtual energy trading system including a virtual energy communication operator (EVNO) that controls a meter,
The power grid is divided into a plurality of areas,
The virtual energy operators includes means for detecting a power usage request from use sources, depending on the power usage request from the use source, the distance between the power source and the use source, the nature of the power source and the power supply means for selecting an optimum power source based on the ability, and means for sending a transmission request for the use source to the power network operation skill from a power source that is the selected possess,
The virtual energy trading system characterized in that the selecting means searches for a power generation source in the same area as the use source, and searches for a power generation source in an adjacent area when it is not found . Wherein is provided with areas broker to manage the power supply and demand situation in the area in the area, by querying the adjacent area area broker of claim 1, wherein the searching for the power source of the adjacent areas virtual Energy trading system. The power operator has means for billing the virtual energy communication provider according to a distance between the use source and the selected power generation source and an amount of transmitted power. The virtual energy trading system according to claim 1 or 2 . The virtual energy trading system according to any one of claims 1 to 3 , wherein there are a plurality of virtual energy communication carriers, and electric power is traded between the plurality of virtual energy communication carriers. A plurality of virtual energy and operators exists, claims 1, characterized in that a trading center for mediating transactions power between the plurality of virtual energy operators are provided according to 3 Virtual energy trading system.

Images