KR102487863B1 - Terminal device in block chain-based energy trading system to optimize energy costs and method of operating the terminal device - Google Patents

Abstract

A terminal device and its operation method in a blockchain-based energy trading system for energy cost optimization are disclosed. A method of operating a terminal device includes measuring energy consumption of a current consumer, determining a predicted energy consumption expected to be consumed in the future based on the measured energy consumption, and terminals installed in other consumers based on the determined predicted energy consumption. and transmitting data for energy transaction to the device. Therefore, it is possible to use energy with optimal efficiency by reducing energy consumption costs.

Description

Terminal device and its operation method in blockchain-based energy trading system for energy cost optimization

The present invention relates to a terminal device and its operating method in a blockchain-based energy trading system for optimizing energy costs, and more particularly, to individual consumers constituting a community and a central server through energy transaction within the community. It is about a technique that can minimize

In the past, since the subject producing energy was limited, energy was supplied only through a specific licensed business operator. At this time, the licensed business operator applies different billing systems to individual users, such as differentially charging charges according to usage time or applying a progressive system, as a billing method for energy used.

Accordingly, energy billing is unilaterally determined by monopolistic energy providers, and some of the individual users pay more favorable costs and others pay more unfavorable costs depending on the amount of energy used and the time of use.

On the other hand, recently, a block chain network has been widely introduced as one of the distributed data storage methods. A blockchain network is created by creating blocks containing transaction details and encryption codes while verifying the reliability of individual nodes and connecting them to each other. It can prevent forgery or falsification of data and reduce transaction costs, replacing the existing transaction system. is emerging as a new alternative.

In addition, as the use of new and renewable energy, including solar heat, has become widespread, it has become possible to produce energy in individual homes, and energy storage devices have begun to be installed in individual homes.

However, research on an energy trading system capable of minimizing consumed energy costs while freely producing or using energy in individual households is still insufficient.

An object of the present invention to solve the above problems is to provide a method of operating a terminal device in a blockchain-based energy trading system for energy cost optimization.

Another object of the present invention to solve the above problems is to provide a terminal device in a blockchain-based energy trading system for energy cost optimization.

One aspect of the present invention for achieving the above object is a method of operating a terminal device in a blockchain-based energy trading system for optimizing energy costs by interworking a terminal device installed in a plurality of consumers receiving energy and a central server. to provide.

In a blockchain-based energy trading system for optimizing energy costs by interoperating terminal devices installed in a plurality of consumers receiving energy and a central server, the operation method of the terminal device includes the steps of measuring the energy consumption of the current consumer, the measurement Determining a predicted energy consumption amount expected to be consumed in the future based on the determined energy consumption amount; and transmitting data for energy transaction to terminal devices installed in other consumers based on the determined predicted energy consumption amount.

The determining of the predicted energy consumption may include transmitting the measured energy consumption to the central server and obtaining the predicted energy consumption from the central server.

After the step of determining the predicted energy consumption, the step of calculating a cost according to the predicted energy consumption by referring to a billing table of an energy supplier, and the cost of receiving energy from the energy supplier is less than the calculated cost If not, the method may further include receiving energy from the energy supplier and storing the energy in an energy storage system (ESS) installed in the current consumer.

The step of transmitting data for energy transaction may include determining a transaction price at which energy can be supplied from the other consumer, and if the transaction price is less than the cost according to the predicted energy consumption, a terminal device installed in another consumer It may include transmitting a message requesting an energy transaction.

The determining of the transaction price may include receiving a desired selling price from a terminal device installed at the other customer and determining the transaction price based on the desired selling price and the desired purchase price of the current customer. can

The desired purchase price may be input from a manager of the current customer.

The desired purchase price may be determined by multiplying a cost according to the predicted energy consumption by a preset ratio.

In the determining of the transaction price, the transaction price may be determined as a value obtained by multiplying and adding a weight to each of the desired purchase price and the desired selling price.

In the transmitting of the data for energy transaction, the data for energy transaction may be transmitted through a blockchain network.

After determining the predicted energy consumption, the method may include acquiring energy produced through power generation facilities installed in the central server through energy transaction with the central server.

Another aspect of the present invention for achieving the above object provides a terminal device in a blockchain-based energy trading system for energy cost optimization.

In a blockchain-based energy trading system for optimizing energy costs by interoperating a terminal device installed in a plurality of consumers receiving energy and a central server, the terminal device includes at least one processor and the at least one processor It may include a memory that stores instructions (instructions) instructing to perform at least one step.

The at least one step may include measuring the current consumer's energy consumption, determining a predicted energy consumption expected to be consumed in the future based on the measured energy consumption, and terminals installed in other consumers based on the determined predicted energy consumption. It may include transmitting data for energy transaction to the device.

The determining of the predicted energy consumption may include transmitting the measured energy consumption to the central server and obtaining the predicted energy consumption from the central server.

After the step of determining the predicted energy consumption, the step of calculating a cost according to the predicted energy consumption by referring to a billing table of an energy supplier, and the cost of receiving energy from the energy supplier is less than the calculated cost If not, the method may further include receiving energy from the energy supplier and storing the energy in an energy storage system (ESS) installed in the current consumer.

The step of transmitting data for energy transaction may include determining a transaction price at which energy can be supplied from the other consumer, and if the transaction price is less than the cost according to the predicted energy consumption, a terminal device installed in another consumer It may include transmitting a message requesting an energy transaction.

The determining of the transaction price may include receiving a desired selling price from a terminal device installed at the other customer and determining the transaction price based on the desired selling price and the desired purchase price of the current customer. can

The desired purchase price may be input from a manager of the current customer.

The desired purchase price may be determined by multiplying a cost according to the predicted energy consumption by a preset ratio.

In the determining of the transaction price, the transaction price may be determined as a value obtained by multiplying and adding a weight to each of the desired purchase price and the desired selling price.

In the transmitting of the data for energy transaction, the data for energy transaction may be transmitted through a blockchain network.

After determining the predicted energy consumption, the method may include acquiring energy produced through power generation facilities installed in the central server through energy transaction with the central server.

In the case of using the central server and terminal device supporting blockchain-based energy transaction for energy cost optimization according to the present invention as described above, energy can be used efficiently and costs can be reduced at the same time.

In addition, it has the advantage of determining and providing an appropriate price between the supplier and the demander according to the price determination algorithm for energy transaction.

1 is an exemplary diagram for explaining a centralized structure in a blockchain-based energy trading system for energy cost optimization according to an embodiment of the present invention.
2 is an exemplary diagram for explaining a distributed structure in a blockchain-based energy trading system for energy cost optimization according to an embodiment of the present invention.
3 is an exemplary diagram for explaining a complex structure in a blockchain-based energy trading system for energy cost optimization according to an embodiment of the present invention.
4 is a block diagram functionally representing a central server supporting blockchain-based energy transaction for energy cost optimization according to an embodiment of the present invention.
5 is a configuration diagram functionally representing a terminal device supporting blockchain-based energy transaction for energy cost optimization according to an embodiment of the present invention.
6 is a flowchart illustrating a method of operating a terminal device in a blockchain-based energy trading system for energy cost optimization according to an embodiment of the present invention.
7 is a hardware configuration diagram of a terminal device in a blockchain-based energy trading system for energy cost optimization according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

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

1 is an exemplary diagram for explaining a centralized structure in a blockchain-based energy trading system for energy cost optimization according to an embodiment of the present invention.

The blockchain-based energy trading system proposed in the present invention is installed in a central server 20 and individual consumers (consumers who receive energy such as electricity), and transfers data necessary for energy trading through a wired and wireless network 45 to the central server. (20) and the terminal device 10 that transmits and receives. The terminal device 10 includes devices installed in individual energy consumers such as offices and shopping malls as well as terminal devices installed in homes to support energy transaction. In the present invention, energy may be supplied or traded on the premise of electrical energy, but is not limited thereto, and should be interpreted as including all energy that is converted into electricity or usable by itself, such as solar energy, solar thermal energy, and wind energy.

The central server 20 may include an energy trading terminal 24 (hereinafter, referred to as an energy trading unit) directly in charge of energy trading, and the terminal device 10 may also include an energy trading terminal 14 in charge of energy trading. May be referred to as the energy trading department below). Here, the energy transaction terminal may be used in the central server 20 and the terminal device 10 in the form of an integrated gateway or a web pad.

On the other hand, the blockchain-based energy transaction system proposed in the present invention is centralized, distributed, or complex depending on whether the energy storage system (ESS) is provided in the central server 20 or individual consumers. can be classified by type. In this case, the energy storage system may include at least one of a battery and a micro circuit unit (MCU) connected to the battery, and may be abbreviated as a battery. The MCU can store energy in the battery or control the energy stored in the battery to be supplied to the outside.

Referring to FIG. 1 , the concept of a centralized energy trading system can be confirmed. In the centralized structure, the central server 20 is equipped with an energy storage system 26 to store energy for a plurality of terminal devices 10 that perform energy transactions with the central server 20 when energy costs are low. system 26.

Specifically, the central server 20 predicts the energy consumption required by the entire community through interworking with terminal devices belonging to the entire community (a set of individual consumers interworking with the central server is referred to as one community), and predicts the required amount of energy. Based on this, when the energy cost is low, energy may be supplied from an energy supplier and stored in the energy storage system 26 .

The terminal devices 10 may transmit energy usage and energy billing systems used by individual consumers to the central server 20, and the central server 20 may predict energy usage based on the received data. In principle, the various terminal devices 10 receive the necessary energy from the energy supplier, but in the time zone or usage period when the energy cost is high, energy can be provided cheaper than the energy supplier through energy transaction with the central server 20. there is.

2 is an exemplary diagram for explaining a distributed structure in a blockchain-based energy trading system for energy cost optimization according to an embodiment of the present invention.

Referring to FIG. 2 , the concept of a distributed energy trading system can be confirmed. In a decentralized structure, the central server 20 may not have an energy storage system and each individual customer may have an energy storage system 16 . Therefore, the terminal device 10 can receive energy in addition to the amount used by individual consumers when the energy cost is low and store it in the energy storage system 16, and use the stored energy in a time zone or usage period when the energy cost is high. can support

In addition, when the energy stored in the energy storage system 16 is less than the required amount, the terminal device 10 supplies energy at a lower cost than the cost of the energy provided from the energy supplier through energy trading with terminal devices of other individual consumers. can be supplied At this time, the terminal devices 10 may be connected to the block chain network 40 to perform energy transaction through the block chain.

In addition, the central server 20 does not directly perform energy transaction, but predicts the energy usage of all individual consumers (or referred to as the entire community) connected to the central server 20, and individual terminal devices are An amount of energy that needs to be stored may be determined and provided to terminal devices. Accordingly, the terminal devices 10 may additionally receive energy and store it in the energy storage system when the energy cost is low according to the predicted amount or storage demand determined by the central server 20 .

3 is an exemplary diagram for explaining a complex structure in a blockchain-based energy trading system for energy cost optimization according to an embodiment of the present invention.

Referring to FIG. 3 , the energy trading system according to the hybrid type may be defined as a mixture of the centralized structure and the distributed structure described in FIGS. 1 and 2 . That is, in the complex structure, not only the central server 20 has the energy storage system 26, but also individual customers may have the energy storage system 16. Therefore, in the complex structure, the central server 20 and all of the terminal devices 10 installed in individual customers are connected to each other through a block chain network for energy transaction, so that they can perform energy transaction with each other.

The central server 20 can receive energy in a low-cost section (or time zone) from an energy supply company through prediction of energy consumption of the entire community and store it in the energy storage system 26, and store the stored energy in a terminal belonging to the community. Devices 10 may be supplied.

The terminal devices 10 do not stop using energy in a low-cost period (or time period), but may receive additional energy from an energy supply company and store it in the energy storage system 16 . Therefore, the terminal devices 10 support individual consumers to use the energy stored in the energy storage system 16 in expensive intervals (or time zones), and when the stored energy is insufficient, the terminal devices of other consumers belonging to the community ( 10) through a transaction or may receive energy from the central server 20.

In addition, although not shown in the drawings, in FIGS. 1 to 3 , the main body (central server or individual consumer) in which the energy storage system is installed may additionally include an energy generating device such as solar light. Accordingly, in this case, individual entities in the community may store energy produced through power generation in an energy storage system, and the stored energy may be used or traded.

4 is a block diagram functionally representing a central server supporting blockchain-based energy transaction for energy cost optimization according to an embodiment of the present invention.

Referring to FIG. 4 , the central server may include a user interface 21 , a data collection unit 22 and/or an energy management unit 23 .

In addition, the central server 20 may further include an energy transaction unit 24, a price adjustment unit 25, and/or an energy storage system (ESS, 26) in a centralized or complex structure. For example, as in a centralized or complex structure, the central server 20 may store energy in an energy storage system (ESS) and trade or supply the stored energy to terminal devices. As another embodiment, the central server 20 may include a price adjustment unit 25 to support energy transactions between terminal devices of individual consumers even in a distributed structure. According to the other embodiment, the terminal device of an individual customer may determine the transaction price through the price received through the price adjustment unit 25 .

The user interface 21 may also be referred to as a human-machine interface (HMI), and may mean an interface for receiving an input from a manager of the central server 20 and displaying an output to the manager.

The data collection unit 22 can collect energy consumption and energy storage (in the case of a distributed type or complex type) of each customer through communication with a terminal device installed in each customer, and an energy billing table from an external energy supplier. can be collected.

The energy management unit 23 predicts the amount of energy expected to be consumed by the entire community based on the data collected through the data collection unit 22, and transfers from the central server 20 to individual consumers based on the predicted amount of energy. It is possible to determine the amount of energy to be provided, the amount of energy to be stored in the energy storage system 26 connected to the central server, and the like. At this time, the energy management unit 23 receives and stores energy in a section or time zone that is cheaper than the cost of energy required by the community additionally based on the billing table of energy that can be supplied from the energy supplier, thereby reducing energy costs. can be done

The energy trading unit 24 may perform energy trading with terminal devices of individual consumers in a centralized or complex structure. At this time, the energy trading unit 24 may perform energy trading through a blockchain network, but in the case of a centralized structure, one of the subjects of all transactions is fixed to the central server 20, so the blockchain network is not used. Instead, energy may be provided from the central server 20 to individual consumers.

The price adjustment unit 25 may determine a price for energy trading to be performed by the energy trading unit 24 in a centralized or complex structure. For example, the price adjustment unit 25 determines the transaction price of energy to be provided to individual consumers based on the cost of storing energy in the energy storage system and/or the cost of receiving energy from the current energy supplier. can decide Alternatively, the price adjustment unit 25 may simply determine the cost spent to store energy in the energy storage system as a price for energy to be provided to individual consumers. In addition, the price adjustment unit 25 may relay price adjustment for energy transactions between individual consumers even though direct transactions are not performed in a distributed structure. As another example, the price adjustment unit 25 may determine a transaction price at a higher price as the number of individual consumers who want to receive energy increases.

The energy storage system 26 may receive and store energy at a relatively low cost from an external energy supplier in a centralized or complex structure. At this time, the energy stored in the energy storage system 26 can be supplied to individual consumers at a low cost on behalf of the energy supplier at a period or point in time when the individual consumer needs to receive energy from an external energy supplier at a high cost. .

5 is a configuration diagram functionally representing a terminal device supporting blockchain-based energy transaction for energy cost optimization according to an embodiment of the present invention.

Referring to FIG. 5, a terminal device supporting blockchain-based energy transaction includes a user interface 11, an energy management unit 12, an energy trading unit 13, an intelligent meter reading unit 14, a price adjustment unit 15, and/or or an energy storage system 16 . At this time, the energy storage system 16 may be included in a complex or distributed structure.

The user interface 11 may also be referred to as a human-machine interface (HMI), and may mean an interface for receiving an input from a manager of the terminal device 10 and displaying an output to the manager.

The intelligent meter reading unit 12 may also be referred to as an intelligent metering infrastructure (AMI), and measures energy consumption including power, gas, water, etc. of the consumer in which the terminal device 10 is installed, and measures the measured energy consumption. may be transmitted to a central server or an energy supplier.

The energy management unit 13 predicts the amount of energy consumption expected to be consumed by the current consumer in the future based on the energy consumption measured by the intelligent meter reading unit 12 (or transmits the energy consumption to the central server, and the central server returns the predicted value). may receive), and based on predicted energy consumption, determine how much energy to purchase energy from a central server or other consumer. Also, the energy management unit 13 may determine the amount of energy to be stored in the energy storage system based on the predicted energy consumption. At this time, the energy management unit 13 can save energy costs by storing energy in a billing period or time zone cheaper than the cost according to the predicted energy consumption based on the billing table for energy that can be supplied from the energy supplier. there is.

The energy trading unit 14 may perform energy trading with terminal devices of other consumers or a central server. At this time, the energy transaction unit 14 can minimize transaction costs and enhance security by performing energy transactions through a blockchain network.

The price adjustment unit 15 may determine a price for energy trading to be performed by the energy trading unit 14 . For example, the price adjustment unit 15 is based on a cost incurred to store energy in the energy storage system 16 and/or a cost to be paid to receive energy from an energy supplier in the current billing period or time zone. It can determine the transaction price of energy to buy or sell. Alternatively, the price adjustment unit 25 in the position of the seller may simply determine the cost spent to store energy in the energy storage system 16 as a price for energy to be provided to other consumers. However, in general, in the case of energy transactions between individual consumers within a community, consumers who sell energy want to sell it at a high price, and consumers who purchase energy want to purchase it at a low price. Accordingly, the price adjustment unit 25 may transmit the desired purchase price or desired selling price to the counterpart terminal device, and determine the final transaction price according to a price determination algorithm based on the price received from the counterpart terminal device. For example, the price adjustment unit 15 may determine the final transaction price as an average value of the desired purchase price and the desired selling price, or may determine the final transaction price by multiplying and adding weights to the desired purchase price and the desired selling price, respectively. . In this case, the weight may be determined according to a cost incurred to store energy and/or a cost to be paid for supplying energy in a current billing period or time zone from an energy supplier.

The energy storage system 16 may receive and store energy supplied from an external energy supplier at a cost in a low-cost billing period or time zone in a distributed or complex structure. At this time, the energy stored in the energy storage system 16 may be traded with terminal devices of other consumers through the energy transaction unit 14 and the price adjustment unit 15 .

6 is a flowchart illustrating a method of operating a terminal device in a blockchain-based energy trading system for energy cost optimization according to an embodiment of the present invention.

Referring to FIG. 6, in a blockchain-based energy trading system for optimizing energy costs by interoperating a terminal device installed in each of a plurality of consumers receiving energy and a central server, the operating method of the terminal device is the energy consumption of the current consumer. Measuring (S100), determining a predicted energy consumption expected to be consumed in the future based on the measured energy consumption (S110), and based on the determined predicted energy consumption, a terminal device installed in another consumer for energy transaction It may include transmitting data (S120).

The step of determining the predicted energy consumption ( S110 ) may include transmitting the measured energy consumption to the central server and acquiring the predicted energy consumption from the central server.

After the step of determining the predicted energy consumption (S110), the step of calculating the cost according to the predicted energy consumption by referring to the billing table of the energy supply company and the cost of currently receiving energy from the energy supply company rather than the calculated cost If this is less, the method may further include receiving energy from the energy supplier and storing the energy in an energy storage system (ESS) installed at the current customer. Here, the billing table may be previously input to the terminal device or may be transmitted from an operation server of an external energy supplier or a central server.

As a specific example, assuming that the billing table has a three-step rate range according to time, the billed amount is 100 won/KW in the rate range between 0 and 8 o'clock, and the billed amount in the rate range between 8 and 16 o'clock is Let's assume that it is 200 won/KW and the billing amount is 300 won/KW in the rate range between 16 and 24:00. At this time, it is assumed that the predicted consumption of house A is 4KWh from 0:00 to 8:00, 1KWh from 8:00 to 16:00, and 6KWh from 16:00 to 24:00. In addition, it is assumed that the consumption of another house B is 5 KWh from 0 to 8 o'clock, 8 KWh from 8 o'clock to 16 o'clock, and 7 KWh from 16 o'clock to 24 o'clock. In this assumption, the cost according to the energy consumption of House A and House B is calculated as follows.

First, house A is 4 * 100 won + 1 * 300 won + 6 * 200 won = 1900 won. House B is 5*100 won + 8*300 won + 7*200 won = 4300 won. At this time, if House A has an energy storage system (ESS) and can store a capacity of up to 10 KWh, House A can store the remaining 6 KW from 0:00 to 8:00. In addition, house A uses the stored energy from 8:00 to 16:00 and can use it from 16:00 to 24:00 (however, between 15:00 and 24:00, 1KWh must be additionally supplied from outside). If the stored energy is used in this way, the cost that house A must pay is 10 * 100 won + 0 * 300 won + 1 * 200 won = 1200 won. In the case of house B, the cost to be paid under the same premise is 10 * 100 won + 3 * 300 won + 7 * 200 won = 3300 won.

Also, if energy can be traded between House A and House B, the cost of energy consumption can be slightly cheaper. In a situation where a transaction is possible, the cost that House A must pay is 10 * 100 won + 0 * 300 won + 4 * 200 won - 3 * selling cost = 1800 won - 3 * selling cost, and the cost that house B must pay is, 10 * 100 won + 0 * 300 won + 7 * 200 won + 3 * selling cost = 2400 won + 3 * selling cost. If you calculate the total cost, it is 4200 won, so it is less than the sum of the individual items of 4500 won. At this time, if the selling cost is calculated as 250 won, both house A and house B are profitable. That is, the payment cost for house A is 1050 won, and the payment cost for house B is 3150 won.

Meanwhile, in the step of transmitting the energy transaction data (S120), the step of determining the transaction price at which energy can be supplied from the other consumer, and if the transaction price is less than the cost according to the predicted energy consumption, the other consumer It may include transmitting a message requesting energy transaction to a terminal device installed in the.

The determining of the transaction price may include receiving a desired selling price from a terminal device installed at the other customer and determining the transaction price based on the desired selling price and the desired purchase price of the current customer. can

The desired purchase price may be input from a manager of the current customer.

In another embodiment, the desired purchase price may be determined by multiplying a cost according to the predicted energy consumption by a preset ratio.

In the determining of the transaction price, the transaction price may be determined as a value obtained by multiplying and adding a weight to each of the desired purchase price and the desired selling price.

In the step of transmitting the data for the energy transaction (S120), the data for the energy transaction may be transmitted through a blockchain network.

After the step of determining the predicted energy consumption (S110), a step of acquiring energy produced through power generation facilities installed in the central server through energy transaction with the central server may be included. That is, energy may be provided from the central server as well as other consumers. In this case, if a power generation facility is installed on the central server side, energy produced through the power generation facility may be provided from the central server.

7 is a hardware configuration diagram of a terminal device in a blockchain-based energy trading system for energy cost optimization according to an embodiment of the present invention.

Referring to FIG. 7 , in a blockchain-based energy trading system for optimizing energy costs by interoperating terminal devices installed in a plurality of consumers receiving energy and a central server, the terminal device 100 includes at least one processor , 110) and a memory 120 for storing instructions instructing the at least one processor 110 to perform at least one step.

The at least one processor 110 may refer to a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor for performing methods according to embodiments of the present invention. can Each of the memory 120 and the storage device 160 may include at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory 120 may include at least one of a read only memory (ROM) and a random access memory (RAM).

In addition, the terminal device 100 may include a transceiver 130 that performs communication through a wireless network. In addition, the terminal device 100 may further include an input interface device 140 , an output interface device 150 , a storage device 160 , and the like. Each component included in the terminal device 100 may be connected by a bus 170 to communicate with each other.

The at least one step may include measuring the current consumer's energy consumption, determining a predicted energy consumption expected to be consumed in the future based on the measured energy consumption, and terminals installed in other consumers based on the determined predicted energy consumption. It may include transmitting data for energy transaction to the device.

The determining of the predicted energy consumption may include transmitting the measured energy consumption to the central server and obtaining the predicted energy consumption from the central server.

After the step of determining the predicted energy consumption, the step of calculating a cost according to the predicted energy consumption by referring to a billing table of an energy supplier, and the cost of receiving energy from the energy supplier is less than the calculated cost If not, the method may further include receiving energy from the energy supplier and storing the energy in an energy storage system (ESS) installed in the current consumer.

The step of transmitting data for energy transaction may include determining a transaction price at which energy can be supplied from the other consumer, and if the transaction price is less than the cost according to the predicted energy consumption, a terminal device installed in another consumer It may include transmitting a message requesting an energy transaction.

The determining of the transaction price may include receiving a desired selling price from a terminal device installed at the other customer and determining the transaction price based on the desired selling price and the desired purchase price of the current customer. can

The desired purchase price may be input from a manager of the current customer.

The desired purchase price may be determined by multiplying a cost according to the predicted energy consumption by a preset ratio.

In the determining of the transaction price, the transaction price may be determined as a value obtained by multiplying and adding a weight to each of the desired purchase price and the desired selling price.

In the transmitting of the data for energy transaction, the data for energy transaction may be transmitted through a blockchain network.

After determining the predicted energy consumption, the method may include acquiring energy produced through power generation facilities installed in the central server through energy transaction with the central server.

The methods according to the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded on a computer readable medium. 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 computer software.

Examples of computer readable media may include hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions may include not only machine language codes generated by a compiler but also high-level language codes that can be executed by a computer using an interpreter and the like. The hardware device described above may be configured to operate with at least one software module to perform the operations of the present invention, and vice versa.

In addition, the above-described method or device may be implemented by combining all or some of its components or functions, or may be implemented separately.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. You will understand that it can be done.

Claims (20)

The terminal devices transmit the energy usage and energy billing system used by individual consumers to the central server, and the central server, based on the data received from the terminal devices, provides a system that belongs to the entire community, which is a set of individual consumers linked to the central server. As a method of operating a terminal device in a blockchain-based energy trading system for minimizing energy cost by predicting energy consumption required by the entire community through interworking with terminal devices,
measuring the current consumer's energy consumption;
determining a predicted energy consumption expected to be consumed in the future based on the measured energy consumption;
Calculating a cost according to the predicted energy consumption by referring to a billing table of an energy supplier, wherein the billing table is input in advance to the terminal device or transmitted from an operation server of the energy supplier or the central server;
If the cost of receiving current energy from the energy supplier is less than the cost calculated according to the predicted energy consumption, an energy storage system (ESS) installed in the current consumer by receiving energy from the energy supplier storing in;
Transmitting data for energy transaction through a blockchain network to a terminal device installed in another consumer based on the predicted energy consumption; and
Obtaining energy produced through power generation facilities installed in the central server through energy transaction with the central server in a time zone where the energy cost of the energy supplier is high or a usage period where the energy cost is high,
The step of determining the predicted energy consumption includes transmitting the measured energy consumption to the central server, and obtaining the predicted energy consumption from the central server;
The step of transmitting data for energy transaction may include determining a transaction price at which energy can be supplied from the other consumer, and a terminal device installed in another consumer if the transaction price is less than the cost according to the predicted energy consumption. Sending a message requesting an energy transaction to
The step of determining the transaction price includes receiving a desired sales price from a terminal device installed at another customer, and determining the transaction price based on the desired sales price and the desired purchase price of the current customer. and
The central server determines a transaction price of energy to be provided to the current consumer and other consumers based on a cost incurred to store energy in an energy storage system and a cost when energy is supplied from the energy supply user; A method of operating a terminal device that relays price adjustment for energy transaction between the current consumer and the other consumer. delete delete delete delete In claim 1,
The desired purchase price is received from a manager of the current consumer. In claim 1,
The desired purchase price is determined by multiplying a cost according to the predicted energy consumption by a preset ratio. In claim 1,
In the step of determining the transaction price, the transaction price is determined by adding a weight to each of the desired purchase price and the desired sale price. delete delete The terminal devices transmit the energy usage and energy billing system used by individual consumers to the central server, and the central server, based on the data received from the terminal devices, provides a system that belongs to the entire community, which is a set of individual consumers linked to the central server. As the terminal device in a blockchain-based energy trading system for minimizing energy cost by predicting energy consumption required by the entire community through interworking with terminal devices,
at least one processor; and
A memory for storing instructions instructing the at least one processor to perform at least one step;
At least one step is
measuring the current consumer's energy consumption;
determining a predicted energy consumption expected to be consumed in the future based on the measured energy consumption;
Calculating a cost according to the predicted energy consumption by referring to a billing table of an energy supplier, wherein the billing table is input in advance to the terminal device or transmitted from an operation server of the energy supplier or the central server;
If the cost of receiving current energy from the energy supplier is less than the cost calculated according to the predicted energy consumption, an energy storage system (ESS) installed in the current consumer by receiving energy from the energy supplier storing in;
Transmitting data for energy transaction through a blockchain network to a terminal device installed in another consumer based on the predicted energy consumption; and
Obtaining energy produced through power generation facilities installed in the central server through energy transaction with the central server in a time zone where the energy cost of the energy supplier is high or a usage period where the energy cost is high,
The step of determining the predicted energy consumption includes transmitting the measured energy consumption to the central server, and obtaining the predicted energy consumption from the central server;
The step of transmitting data for energy transaction may include determining a transaction price at which energy can be supplied from the other consumer, and a terminal device installed in another consumer if the transaction price is less than the cost according to the predicted energy consumption. Sending a message requesting an energy transaction to
The step of determining the transaction price includes receiving a desired sales price from a terminal device installed at another customer, and determining the transaction price based on the desired sales price and the desired purchase price of the current customer. and
The central server determines a transaction price of energy to be provided to the current consumer and other consumers based on a cost incurred to store energy in an energy storage system and a cost when energy is supplied from the energy supply user; A terminal device that relays price adjustment for energy transaction between the current consumer and the other consumer. delete delete delete delete In claim 11,
The terminal device, wherein the desired purchase price is input from a manager of the current consumer. In claim 11,
The terminal device of claim 1 , wherein the desired purchase price is determined by multiplying a cost according to the predicted energy consumption by a preset ratio. In claim 11,
In the determining of the transaction price, the transaction price is determined as a value obtained by multiplying and adding a weight to each of the desired purchase price and the desired sale price. delete delete

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