WO2023153550A1

WO2023153550A1 - Smart energy trading system and method

Info

Publication number: WO2023153550A1
Application number: PCT/KR2022/002803
Authority: WO
Inventors: 박세현; 박상욱; 조건희; 윤구원
Original assignee: 중앙대학교 산학협력단
Priority date: 2022-02-11
Filing date: 2022-02-25
Publication date: 2023-08-17
Also published as: KR20230121441A

Abstract

Smart energy trading system and method are disclosed. The smart energy trading system comprises: at least one prosumer; at least one consumer; and a virtual power bank which forms a virtual grid, which is a virtual connection chain for energy trades between the prosumer and consumer, and temporarily stores surplus power of the prosumer via the virtual grid and brokers the sale of the surplus power to a consumer satisfying energy trade constraints, wherein the virtual grid comprises a virtual connection chain connected to an electric power company and is established by using an energy grid previously established by the electric power company.

Description

Smart energy trading system and method

The present invention relates to a smart energy trading system and method.

Researchers worldwide are working to develop smart energy technologies, services and business models to reduce energy consumption and _CO2 and greenhouse gas emissions. Based on ICT technology, it is possible to build a sustainable environment, and solar-based new and renewable energy systems and new and renewable energy-related intelligent service models are being developed, and one of the most representative service models is the energy prosumer.

Various energy saving benefits such as electricity bill reduction are provided by efficiently managing distributed and diverse power sources through Energy Prosumer and making up for insufficient energy through transactions.

Due to the energy prosumer, it is possible to build a demand management system through improved response to consumer demand, energy saving and efficiency improvement through information exchange between the supply side and the demand side, and by directly installing new and renewable energy sources, consumers can now control energy production and consumption. It is possible to build a self-sufficient energy management system that includes Accordingly, consumers around the world are already installing renewable energy facilities, especially photovoltaic power generation facilities, and trading surplus power in various ways. In addition, due to the continuous decrease in the cost of solar power generation and the continuous increase in electricity rates, the installation of solar panels by consumers is rapidly increasing.

Currently, it is cheaper for consumers to produce and consume electricity directly than to purchase it from the power company. Therefore, it is predicted that the centralized energy supply method centered on existing large-scale facilities will change to a decentralized self-sufficient energy supply method.

However, because the production cost of renewable energy is higher than that of the existing grid (EG), and it is difficult to set an accurate unit price, it restricts the formation of a practical market between sellers and consumers. Despite the existence of these smart services, Korea's energy trading model is There are problems that are difficult to apply to.

The present invention enables trading of power not only with nearby neighbors but also with prosumers at a distance by trading power based on a virtual power bank (VPB) using a reference power infrastructure without configuring an energy storage device (ESS) and an independent grid. It is to provide a smart energy trading system and method.

In addition, the present invention is to provide a cost-effective smart energy trading system and method since the cost of building an energy storage device and an independent grid is not required.

According to one aspect of the present invention a smart energy trading system is provided.

According to one embodiment of the present invention, at least one prosumer; at least one consumer; and forming a virtual power grid that is a virtual connection chain for energy transaction with the prosumer and the consumer, temporarily storing surplus power of the prosumer through the virtual power grid, and then selling the surplus power to a consumer that satisfies energy transaction constraints. Including a virtual power storage that mediates, wherein the virtual power grid includes a virtual connection chain with a power company, and is built using an energy grid established by the power company. can

The virtual power storage utilizes the energy grid as a virtual energy storage device (ESS) and temporarily stores the surplus power through the virtual power grid. including sending it back to the grid, but not selling the surplus power to the power company.

The virtual power storage grants a power usage right equal to the temporarily stored surplus power to a consumer satisfying the energy transaction constraint condition, and the consumer who has been granted the power usage right uses the energy grid based on the granted power usage right Power as much as the surplus power can be used from

The virtual power storage may request payment for the brokerage from the consumer, settle the energy grid usage fee to the power company corresponding to the brokerage, and settle sales charges according to the brokerage to the prosumer.

The energy transaction constraint condition is that the prosumer's power sale benefit is greater than the power offset benefit, the consumer's power purchase benefit is greater than the purchase benefit from the electric power company, and the sale of surplus power The price is a condition in which the prosumer's electricity sales benefit is set higher than the consumer's electricity purchase benefit in consideration of the recovery cost of the prosumer who has installed renewable energy production facilities.

According to another embodiment of the present invention, a network management unit for constructing a virtual power grid, which is a virtual connection chain for energy transaction between at least one prosumer and at least one consumer, by utilizing an energy grid established by a power company; and a power trading unit that receives and temporarily stores surplus power from the prosumer through the virtual power grid, and mediates sales of the temporarily stored surplus power through the virtual power grid to a consumer that satisfies an energy transaction constraint condition. The temporary storage of power includes the prosumer sending the surplus power back to the energy grid by utilizing the energy grid as a virtual energy storage device, but not selling the surplus power to the power company Virtual power, characterized in that Storage may be provided.

According to another aspect of the present invention, a smart energy trading method is provided.

According to an embodiment of the present invention, (a) constructing a virtual power grid, which is a virtual connection chain for energy transaction between at least one prosumer and at least one consumer, by utilizing an energy grid established by a power company; (b) receiving and temporarily storing surplus power from the prosumer through the virtual power grid; and (c) intermediating the sale of the temporarily stored surplus power through the virtual power grid to a consumer that satisfies an energy transaction constraint condition, wherein the temporary storage of the surplus power is performed using the energy grid as a virtual energy storage device. A smart energy transaction method may be provided, wherein the prosumer sends the surplus power back to the energy grid, but does not sell the surplus power to the power company.

In the step (c), a consumer who satisfies the energy transaction constraints is granted the right to use power as much as the temporarily stored power through the virtual power grid, and the consumer who is granted the right to use power uses as much as the temporarily stored power. Power is available through the energy grid.

The method may further include requesting payment for the brokerage from the consumer, settling the energy grid usage fee to the electric power company corresponding to the brokerage, and settling sales charges according to the brokerage to the prosumer.

The energy transaction constraint condition is that the prosumer's power sale benefit is greater than the power offset benefit, the consumer's power purchase benefit is greater than the electric power company's purchase price, and the surplus power sales price is The prosumer's power sales benefit may be set higher than the consumer's power purchase benefit in consideration of the recovery cost of the prosumer who has installed renewable energy production facilities.

By providing a smart energy trading system and method according to an embodiment of the present invention, power based on a virtual power bank (VPB) using a reference power infrastructure without configuring an energy storage device (ESS) and an independent grid. It has the advantage of enabling trading not only with close neighbors but also with distant prosumers.

In addition, the present invention has a cost-effective advantage because it does not require the cost of building an energy storage device and an independent grid.

1 is a diagram showing the configuration of a smart energy trading system according to an embodiment of the present invention.

2 is a diagram for explaining a surplus power trading model according to an embodiment of the present invention;

3 is a flowchart illustrating a smart energy trading method using a virtual power storage according to an embodiment of the present invention.

4 is a diagram illustrating P2P-based energy trading based on virtual power storage according to an embodiment of the present invention;

5 is a block diagram schematically illustrating an internal configuration of a virtual power storage according to an embodiment of the present invention;

Singular expressions used herein include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or some of the steps It should be construed that it may not be included, or may further include additional components or steps. In addition, terms such as "...unit" and "module" described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1 , a smart energy trading system 100 according to an embodiment of the present invention includes a virtual power storage 110, at least one prosumer 120, and at least one consumer 130.

According to an embodiment of the present invention, it is assumed that at least one prosumer 120 and at least one consumer 130 have an energy grid established with a power company (eg, KEPCO).

In an embodiment of the present invention, the virtual power grid 140 may be separately formed by utilizing an energy grid pre-constructed by a power company (eg, KEPCO). Here, the virtual power grid is not a real power grid, but should be understood as a virtual connection chain for energy transaction. That is, hereinafter, an energy grid is an actual connection chain through which real energy (power) built by a power company is transferred, and a virtual power grid is understood as a virtual connection chain for data transfer for energy transaction.

In addition, as shown in FIG. 1 , the virtual power grid 140 may form a virtual connection chain with electric power companies in addition to the prosumer 120 and the consumer 130 . For this reason, in one embodiment of the present invention, the energy grid itself established by the electric power company can be utilized as a concept of a virtual energy storage system (ESS). That is, as shown in FIG. 1 , the virtual power grid 140 may transmit/receive data according to energy transactions between the virtual power storage 110 , the plurality of prosumers 120 , and the plurality of consumers 130 . The virtual power grid according to an embodiment of the present invention is not configured independently, but may be configured using the existing KEPCO grid network.

The virtual power storage 110 may collect real-time energy data of each prosumer 120 through distributed energy IoT based on the virtual power grid 140 . Distributed energy IoT can be an IoT device that is installed on each renewable platform (solar panel) and collects data on distributed renewable energy. That is, according to an embodiment of the present invention, distributed energy IoT is installed in new and renewable energy production facilities (platforms, that is, photovoltaic power generation facilities) built by each prosumer 120, and collected from each distributed solar panel. Data such as charging status and discharging status can be collected through the stored power sensor information, and intelligent services can be provided through intelligent data analysis algorithms based on these energy data.

The virtual power storage 110 according to an embodiment of the present invention is a means for temporarily storing power for energy transaction based on an energy grid. The virtual power storage 110 may include a power company and a power mediation server.

The virtual power storage 110 may collect energy data based on the virtual power grid 140 and may mediate energy transaction between the prosumer 120 and the consumer 130 based on the collected energy data. In mediating the energy transaction, the virtual power storage 110 may mediate the energy transaction between the prosumer 120 and the consumer 130 so as to satisfy energy transaction constraints.

Here, the energy transaction constraints may include prosumer conditions and consumer conditions.

The prosumer condition is a condition that the power sales benefit must be greater than the power offset benefit, which can be expressed as in Equation 1.

here,

represents the power offset benefit,

represents the electricity sales benefit. The prosumer's benefit from selling electricity can be considered the recovery cost of the prosumer who installed renewable energy production facilities. That is, some of the prosumers 120 may be equipped with renewable energy production facilities, and some may not be equipped with renewable energy production facilities. In addition, the recovery cost may be different depending on the type of renewable energy production facility, and in order to provide an incentive to them, the electricity sales benefit (cost) of each prosumer may be calculated in consideration of the recovery cost of the renewable energy production facility.

The consumer condition is that the benefit (cost) of purchasing power from a prosumer must be greater than that of purchasing the entire amount from a power company (eg, KEPCO), which can be expressed as in Equation 2.

For convenience of understanding and explanation, a method of determining a power transaction price will be described in more detail.

The power offset benefit represents the prosumer's benefit (cost) when the prosumer offsets the surplus power to the energy grid of the power company. The power offset benefit (cost) can be expressed as Equation 3. In other words, the prosumer's power offset benefit is the total amount of power consumed (

), the netting benefit is obtained by subtracting the total power paid by offsetting the surplus power generated from solar power.

here,

represents the power offset benefit,

represents the total amount of power consumed by the prosumer,

represents the amount of power received from the energy grid,

represents the amount of electricity consumed by the prosumer, Y represents the total amount of electricity produced by the prosumer (i.e., total amount of electricity generated by sunlight), and C() represents the amount paid to the power company (KEPCO) for the amount used. indicate

The power sales benefit can be expressed as Equation 4.

The prosumer's electricity sales benefit is the electricity bill for the total electricity consumed by the prosumer, minus the electricity bill received from the existing grid (ie, KEPCO's energy grid), and the surplus electricity remaining after generating electricity (

) adds up the sales price for electricity sales.

The price from the prosumer side is determined so that the electricity sales benefit is greater than the electricity offset benefit, and this can be expressed as Equation 5.

Therefore, Equation 5 can be arranged for price P as in Equation 6. That is, the total amount of power consumed (

), the power offset benefit is obtained by subtracting the electricity fee paid to the energy grid out of the surplus electricity generated from solar power generation. Therefore, the electricity price traded in the prosumer market can be summarized as in Equation 6.

The electricity price in terms of the prosumer may be determined as shown in Equation 6 so that the electricity sales benefit is greater than the electricity offset benefit.

According to an embodiment of the present invention, in determining the electricity price from the prosumer side, it may be determined in consideration of the recovery cost of the prosumer who has installed renewable energy generation facilities (ie, photovoltaic facilities).

To this end, in one embodiment of the present invention, the transaction ratio index (

) may be further considered to determine the electricity sales price. Transaction Ratio Index (

) is set to recover installation costs for prosumers who have installed renewable energy production facilities (i.e., solar panels), and to shorten the installation cost recovery period by multiplying the sales price by a certain percentage or higher than consumers who have not installed solar power. It is for

If this is expressed as an equation, it is equivalent to Equation 7.

Therefore, the electricity sales price from the prosumer side can be determined as shown in Equation 7.

We will explain the price from the consumer's point of view.

The consumer's power purchase fee can be derived as shown in Equation 8.

The cost paid by the consumer for power transaction and electricity bill can be calculated as shown in Equation 9.

From the consumer's point of view, the benefit of purchasing power derived from Equation 9 must be greater than the benefit of purchasing and using the entire amount from the existing power company (KEPCO).

Therefore, when expressed as an equation, it can be expressed as Equation 10.

here,

represents the total amount of electricity used by the purchaser, and Z represents the amount of electricity purchased. Therefore, from the consumer's point of view, the benefit (cost) of purchasing power through the virtual power storage 110 should be smaller than the benefit (cost) of purchasing electricity from the electric power company (KEPCO).

Equation 10 can be rearranged as Equation 11.

According to Equations 7 and 11, the power transaction price P may be determined within the power transaction price range shown in Equation 12.

In determining the power transaction price within the power transaction price range, in an embodiment of the present invention, the transaction profit index is further considered so that the profit of the prosumer due to the sale of surplus electricity is greater than the profit of the consumer due to the purchase of surplus electricity. You can determine the transaction price. Even if there is no separate description below, it should be understood that the virtual power storage 110 mediates the power transaction between the prosumer 120 and the consumer 130 based on the aforementioned power transaction price.

A method of mediating power transaction between the prosumer 120 and the consumer 130 based on the virtual power storage 110 will be described in detail with reference to FIG. 2 below.

The plurality of prosumers 120 may be small-scale power producers and power sellers. Some of the plurality of prosumers 120 may be small-scale power producers who have built renewable energy production facilities (eg, solar panels, etc.). Of course, some of the plurality of prosumers 120 may be electricity sellers who have not built renewable energy production facilities.

A plurality of prosumers having renewable energy production facilities may produce energy (power) using the corresponding renewable energy production facilities, consume it, and sell surplus power remaining.

However, the plurality of prosumers 120 may temporarily store the surplus power in the virtual power storage 110 through the virtual power grid, rather than net metering the surplus power to the power company (eg, KEPCO). That is, the plurality of prosumers 120 send surplus power back to the energy grid of the electric power company, and the virtual power storage 110 may temporarily store the surplus power sent back through the virtual power grid.

The consumer 130 is a subject that purchases energy, and may be a general household, an apartment building, or a factory. The consumer 130 may also transmit energy consumption data to the virtual power storage 110 based on the distributed energy IoT. The distributed energy IoT device of the consumer 130 may be, for example, a smart meter (AMI).

In an embodiment of the present invention, a virtual power grid is constructed using the existing KEPCO power grid without separately configuring a local grid, and energy trading is possible by using the KEPCO power grid as a virtual energy storage device. This will be more clearly understood by the following description.

2 is a diagram for explaining a surplus power trading model according to an embodiment of the present invention.

Due to COVID-19, the number of people working from home is increasing recently. Photovoltaic production facilities, which are renewable energy production facilities, are mostly installed in buildings such as public institutions. Due to the increase in the number of telecommuters, energy consumption in public institutions is decreasing, and energy consumption in apartment complexes is increasing.

Photovoltaic power generation facilities (PV) produce the most energy during most of the daytime, from 9 to 18:00, and most of the power produced during working hours is lost. On the other hand, the demand for electricity in apartment complexes between 9 and 18 is increasing due to the increase in telecommuting.

Therefore, by temporarily storing the surplus power of the prosumer 120 based on the virtual power storage 110 according to an embodiment of the present invention and mediating power transaction to the consumer 130 wishing to purchase power without distance restrictions, the consumer There is an advantage of mitigating the power usage cost due to the progressive tax of (130).

In addition, there is no need to build an independent grid in an apartment complex, etc., and there is no need to separately prepare an energy storage device, so there is an advantage that can enable energy trading that is beneficial to both prosumers and consumers. This will be more clearly understood by the following description.

3 is a flowchart illustrating a smart energy trading method using a virtual power storage according to an embodiment of the present invention. As already described above, the virtual power exchange may include a server that brokers power transactions with an energy grid of an existing power company. The virtual power storage 110 assumes that a virtual power grid is constructed based on an energy grid of an existing power company, and the virtual power grid may be built to include power companies, prosumers, and consumers.

In addition, it is assumed that the virtual power storage 110 collects energy-related data of prosumers and consumers based on a distributed energy IoT technology based on a virtual power grid.

In step 310, the virtual power storage 110 receives a request for selling surplus power from the prosumer P1 through the virtual power grid.

In step 315, the virtual power storage 110 transmits a power purchase confirmation request to the consumers C1 and C2 through the virtual power grid. Here, the power purchase confirmation request may include information about the amount of power of some (ie, surplus power) of the power generated by the prosumer P1. In addition, the request to confirm whether or not to purchase power may further include price information.

In addition, when the virtual power storage 110 transmits a request to confirm whether or not to purchase power to the consumer, the virtual power storage 110 may transmit the request to confirm whether to purchase or not to purchase power to the consumer that satisfies the energy transaction constraints.

That is, the energy transaction constraint condition is that, as already described above, from the prosumer side, the power sales benefit must be greater than the power offset benefit. Thus, the price can be determined to outweigh the netting benefit of electricity to the power company.

From the consumer's point of view, the benefit of purchasing electricity from prosumers should be greater than the benefit of purchasing electricity from power companies.

In this way, in considering the electricity sale benefit and the electricity purchase benefit, respectively, from the prosumer side and the consumer side, the price may be determined so that the power sale benefit is greater than the power purchase benefit. This is to consider the recovery cost of prosumers who have installed renewable energy production facilities.

Accordingly, the virtual power storage 110 may transmit a request to confirm whether or not to purchase power to a consumer who consumes a lot of energy based on the collected energy-related data. At this time, the virtual power storage 110 may transmit a request to confirm whether or not to purchase power to consumers to whom the progressive tax is applied in consideration of the progressive tax.

In step 320, the virtual power store 110 receives the purchase decision of the consumer C1.

In step 325, the virtual power storage 110 establishes and configures a transaction session for power transaction between the prosumer P1 and the consumer C1 in response to the purchase decision of the consumer C1.

In step 330, the virtual power storage 110 receives surplus power from the prosumer P1 according to the transaction session configuration and temporarily stores it.

As described above, the virtual power storage 110 may be linked with a power company (KEPCO). That is, the virtual power storage 110 may utilize an energy grid of a power company as a virtual energy storage device. Therefore, the meaning that the virtual power storage 110 receives the surplus transmission and temporarily stores it means that the prosumer 120 sends the surplus power back to the energy grid of the power company, but selling the surplus power back to the power company no.

In terms of the virtual power storage 110, since the energy grid of the electric power company is used as a virtual energy storage device, surplus power returned by the prosumer 120 may be temporarily stored in the energy grid.

In step 335, the virtual power storage 110 grants the consumer the right to use power as much as the temporarily stored surplus power.

In step 340, the consumer 130 uses power as much as the surplus power returned from the energy grid according to the power usage authority.

In step 345, the virtual power storage 110 performs payment with the consumer C1 corresponding to the power transaction and performs settlement according to the surplus power transaction.

The virtual power storage 110 temporarily stores the surplus power of the prosumer P1 in the corresponding virtual power storage, and then sells the power to the consumer by mediating the power transaction, and may pay the corresponding cost. Then, according to the consumer's payment, the virtual power storage 110 pays a fee for the power company's use of the energy grid, and transfers the sales amount according to the electricity sale to the prosumer P1.

In other words, when a prosumer having surplus power sends the surplus power back through the energy grid, the virtual power storage 110 is primarily granted the right to use power equal to the surplus power, and the right to use the power is transferred to the surplus power. It can be given back to the consumer who purchased it.

To this end, the virtual power storage 110 according to an embodiment of the present invention may utilize an energy grid of a power company as a virtual energy storage device.

4 is a diagram illustrating P2P-based energy transaction based on a virtual power storage according to an embodiment of the present invention.

As shown in FIG. 4, the virtual power storage 110 builds a virtual power grid by utilizing the energy grid of an existing electric power company, and stores prosumer and consumer energy-related data using distributed energy IoT devices through the virtual power grid. As it is collected and managed, there is an advantage in that it does not separately configure a local grid and does not have its own energy storage device, and enables electricity trading between prosumers and consumers regardless of region.

5 is a block diagram schematically illustrating an internal configuration of a virtual power storage according to an embodiment of the present invention.

The virtual power storage 110 according to an embodiment of the present invention is linked to an energy grid of a power company and includes a virtual power plant. Also, as described above, the virtual power storage 110 may build a virtual power grid including prosumers and consumers using the energy grid of the power company.

The virtual power storage 110 including the energy grid of the electric power company and the concept of the virtual power plant may also include a mediation server for mediating power transactions between prosumers having surplus power and consumers. In this specification, the virtual power storage 110 should be understood as not a storage that actually stores power, but a power mediation server that interworks with the energy grid of the power company and utilizes the energy grid of the power company as a virtual energy storage device. .

Referring to FIG. 5 , the virtual power storage 110 according to an embodiment of the present invention includes a communication unit 510, a network management unit 520, a data collection unit 530, a power trading unit 540, and a memory 550. and a processor 560.

The communication unit 510 is a means for transmitting and receiving data with other devices (eg, prosumer 120, consumer 130, power company, etc.) through a communication network. In this specification, the prosumer 120, the consumer 130, and the power company should be understood as a prosumer terminal (device), a consumer terminal (device), and a power company terminal (device), respectively. That is, it should be extended and interpreted as a device capable of transmitting and receiving data through a communication line.

The network management unit 520 is a means for constructing/managing a virtual power grid based on an energy grid of a power company. The network management unit 520 may build a virtual power grid including the prosumer 120 and the consumer 130 based on the energy grid of the electric power company (KEPCO). Such a virtual power grid may include a power company, as described above.

The data collector 530 is a means for collecting energy-related data from each of the prosumer 120 and the consumer 130 through the virtual power grid.

For example, the data collection unit 530 may monitor surplus power of the prosumer 120 by collecting energy-related data of the prosumer 120 . Also, the data collection unit 530 may obtain data consumption data of the consumer 130 .

The power trading unit 540 is a means for mediating power trading by connecting a trading session between a prosumer having surplus power and a consumer 130 wishing to purchase power through a virtual power grid.

For example, the power trading unit 540 may receive and temporarily store surplus power from the prosumer 120 through a virtual power grid. That is, as the surplus power is temporarily stored in the virtual power storage 110 , the prosumer 120 may send the surplus power back through the energy grid of the power company. At this time, the transfer of surplus power back to the power company's energy grid by the prosumer 120 does not mean that the energy is sold to the power company.

The power trading unit 540 may grant power usage rights for the amount of power equivalent to the temporarily stored surplus power to a consumer that satisfies the energy transaction constraints. Accordingly, a consumer authorized to use power may use power as much as the corresponding surplus power from the energy grid (energy grid of the power company).

The power trading unit 540 pays for power transaction costs according to the use of power from the energy grid of consumers who are authorized to use the power, pays the energy grid usage fee to the power company, and pays the sales price for the power transaction. can be paid to prosumers.

The memory 550 is a means for storing program codes (commands) required to perform a smart energy trading method using a virtual power storage according to an embodiment of the present invention.

The processor 560 includes internal components (eg, the communication unit 510, the network management unit 520, the data collection unit 530, and the power trading unit) of the virtual power storage 110 according to an embodiment of the present invention. 540, memory 550, etc.).

Devices and methods according to embodiments of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in computer readable media. Computer readable media may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on a computer readable medium may be specially designed and configured for the present invention, or may be known and usable to those skilled in the art in the field of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. - Includes hardware devices specially configured to store and execute program instructions, such as magneto-optical media and ROM, RAM, flash memory, etc. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler.

The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

So far, the present invention has been looked at mainly by its embodiments. Those skilled in the art to which the present invention pertains will be able to understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from a descriptive point of view rather than a limiting point of view. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent scope will be construed as being included in the present invention.

Claims

at least one prosumer;

at least one consumer; and

Form a virtual power grid, which is a virtual connection chain for energy transaction with the prosumer and the consumer, temporarily store surplus power of the prosumer through the virtual power grid, and then sell the surplus power to consumers who satisfy energy transaction constraints Including an intermediary virtual power store,

The virtual power grid includes a virtual connection chain with a power company, and is built using an energy grid established by the power company.
According to claim 1,

The virtual power storage utilizes the energy grid as a virtual energy storage device (ESS), and temporarily stores the surplus power through the virtual power grid,

The temporary storage of the surplus power includes the prosumer sending the surplus power back to the energy grid, but not selling the surplus power to the power company.
According to claim 2,

The virtual power storage grants a consumer who satisfies the energy transaction constraint condition the right to use power equal to the temporarily stored surplus power,

The smart energy trading system, characterized in that the consumer who has been granted the right to use power uses power as much as the surplus power from the energy grid based on the right to use the power.
According to claim 1,

The virtual power storage is

A smart energy trading system characterized by requesting payment for the brokerage from the consumer, settling the energy grid usage fee to the power company in accordance with the brokerage, and settling the sales fee according to the brokerage to the prosumer. .
According to claim 1,

The energy transaction constraints are,

The prosumer's electricity sales benefit is greater than the electricity offset benefit;

The smart energy trading system, characterized in that the purchase benefit of the consumer from the prosumer is greater than the purchase benefit from the electric power company.
According to claim 5,

The energy transaction constraint condition is a condition in which the sales price of the surplus power is set higher than the consumer's power purchase benefit by considering the recovery cost of the prosumer who has installed renewable energy production facilities. smart energy trading system.
(a) constructing a virtual power grid, which is a virtual connection chain for energy transaction between at least one prosumer and at least one consumer, by utilizing an energy grid established by a power company;

(b) receiving and temporarily storing surplus power from the prosumer through the virtual power grid; and

(c) brokering the sale of the temporarily stored surplus power through the virtual power grid to a consumer who satisfies an energy transaction constraint;

The temporary storage of the surplus power includes the prosumer sending the surplus power back to the energy grid by utilizing the energy grid as a virtual energy storage device, but not selling the surplus power to the power company. How to trade smart energy.
According to claim 7,

In step (c),

Give a consumer who satisfies the energy transaction constraints the right to use power as much as the temporarily stored power through the virtual power grid,

The smart energy transaction method, characterized in that the consumer who is authorized to use the power uses the power as much as the temporarily stored power through the energy grid.
According to claim 7,

Smart energy transaction further comprising the step of requesting payment for the brokerage from the consumer, settling the energy grid usage fee corresponding to the brokerage to the electric power company, and settling the sales fee according to the brokerage to the prosumer. method.
According to claim 7,

The energy transaction constraints are,

The prosumer's electricity sales benefit is greater than the electricity offset benefit;

The smart energy transaction method, characterized in that the purchase benefit of the prosumer is greater than the purchase price of the electric power company.
According to claim 10,

The energy transaction constraint condition is a condition in which the sales price of the surplus power is set higher than the power purchase benefit of the consumer in consideration of the recovery cost of the prosumer who has installed the renewable energy production facility Smart energy transaction method.
A computer-readable recording medium on which program codes for performing the method according to claim 7 are recorded.
a network management unit that builds a virtual power grid, which is a virtual connection chain for energy transaction between at least one prosumer and at least one consumer, by using an energy grid established by a power company; and

A power trading unit that receives and temporarily stores surplus power from the prosumer through the virtual power grid, and mediates sales of the temporarily stored surplus power through the virtual power grid to consumers who satisfy energy transaction constraints;

The temporary storage of the surplus power includes the prosumer sending the surplus power back to the energy grid by utilizing the energy grid as a virtual energy storage device, but not selling the surplus power to the power company. virtual power storage.