TWI813079B - A blockchain system for power trading - Google Patents

Abstract

A blockchain system for power trading includes a transaction server running a transaction platform, and a server unit. When the server unit receives a charging request generated by a charging terminal, the server unit writes the charging demand into a distributed ledger. When the server unit receives from the trading platform a request for selling electricity including a sell content, the server unit determines whether there is a matched purchase content that matches the sell content among all the pending buy content announced on the trading platform. When it is determined that the matched purchase content exists, the server unit generates a first transaction pairing result and writes it into the distributed ledger based on the matched purchase content and the sell content.

Description

Blockchain system for electricity trading

The present invention relates to a blockchain system, in particular to a blockchain system for electric energy transactions.

With the rise of environmental awareness and policy encouragement, the sales of electric vehicles in various countries around the world are increasing day by day. The International Energy Agency (IEA) also estimates that the global number of electric vehicles will reach 125 million in 2030, which will reach 40% compared with today. Double the growth, which shows that the growth is strong. In order to effectively solve the charging problem of electric vehicles, electric vehicle markets around the world are accelerating the construction of charging stations.

More and more charging stations are built in long-term parking locations such as homes, restaurants, and parking lots. Through the implementation of V2G (Vehicle-to-Grid) technology, existing electric vehicles can not only be charged through charging piles, but also can be charged at When needed, the electric energy from the vehicle is fed back to the grid to achieve two-way charging and discharging functions to improve energy efficiency and maintain grid stability. When the liquidity of electric energy is high, electric energy trading can be carried out. However, how to ensure the security, anonymity and non-tamperability of electric energy trading to avoid unfair electric energy trading has become an urgent problem to be solved.

Therefore, the purpose of the present invention is to provide a blockchain system for electric energy transactions that can ensure the security, anonymity and non-tamperability of electric energy transactions.

Therefore, the blockchain system for electric energy trading of the present invention is suitable for a building equipped with an electric vehicle charging station. The electric vehicle charging station can charge and discharge multiple parked electric vehicles. The blockchain system passes through an The communication network connects a charging end held by a charging demander and a discharging end held by a discharging demander. The charging end is used to generate a to-be-charged charge related to the charging demander. The charging demand of electric vehicles, the discharge end is used to generate an electricity sales demand related to an electric vehicle to be discharged held by the discharge demander. The blockchain system includes a transaction server and a server unit .

The transaction server is connected to the charging terminal and the discharging terminal through the communication network, and is used to run a trading platform that announces multiple pending purchases related to electric energy.

The server unit is connected to the transaction server via the communication network, and when the server unit receives from the transaction platform the information generated by the charging terminal that contains the desired charging content related to the electric vehicle to be charged. When charging is required, the server unit writes the charging requirement into the distributed ledger of the blockchain system through the smart contract in the blockchain system. When the server unit receives the discharge from the trading platform When the electricity sales demand generated by the client includes a content to be sold, the server unit writes the content to be sold into the distributed ledger of the blockchain system through the smart contract in the blockchain system, and Announce the content to be sold on the trading platform as content to be sold, and determine whether among all the content to be purchased that has not been matched and completed on the trading platform, there is a matching purchase content that matches the content to be sold. When When the server unit determines that the paired purchase content exists, the server unit generates a first transaction matching result based on the content to be sold and the paired purchase content through the smart contract in the blockchain system, and writes it into the area. In the distributed ledger of the blockchain system, the first transaction matching result is announced on the trading platform.

The effect of the present invention is that the server unit stores the charging demand in the distributed ledger of the blockchain system, and the server unit generates the first content based on the content to be sold and the paired purchase content. The transaction matching results are written into the distributed ledger of the blockchain system to ensure that each power transaction is safe, transparent, anonymous and non-tamperable.

Referring to Figures 1 and 2, an embodiment of the blockchain system 1 for electric energy trading of the present invention is applicable to a building 2 equipped with an electric vehicle charging station 21. The building 2 is equipped with multiple loads 22. The electric vehicle charging station 21 can charge and discharge multiple parked electric vehicles 3. The electric vehicle charging station 21 is also provided with a plurality of charging piles 13 for charging and discharging the parked electric vehicles 3, one corresponding to one. The energy storage information of the electric energy storage device 212 and a solar module 211 used for power generation. The energy storage information includes an entry battery state of charge of the electric energy storage device 212, a current battery state of charge, a minimum state of charge, and a maximum charge. status, a full charge capacity, and a maximum charge and discharge power. The blockchain system 1 for electric energy trading includes a transaction server 11, a server unit 12 connected to the transaction server 11 via a communication network 100, installed in the electric vehicle charging station 21 and via the communication network The charging piles 13 connected by the road 100 to the server unit 12, and a plurality of power measuring devices 14 installed in the building 2, a power generation place, and connected to the server unit 12 through the communication network 100, and a power transmission device 16 connected to the server unit 12 via the communication network 100. The server unit 12 , each charging pile 13 , each power measuring device 14 and the power transmission device 16 serve as multiple blockchain nodes in the blockchain system 1 .

The blockchain system 1 for electric energy trading connects a charging terminal 41 held by a charging demander, a discharging terminal 42 held by a discharging demander, and a green battery through the communication network 100 A green electricity charging terminal 43 held by a charging demander, a green electricity discharging terminal 44 held by a green electricity discharging demander, and an operating terminal 45 held by the operator of the electric vehicle charging station 21 , a green electricity purchasing terminal 46 held by a green electricity purchaser, a green electricity selling terminal 47 held by a green electricity seller, a purchasing terminal 48 held by a purchaser, and a green electricity purchasing terminal 48 held by a green electricity seller. A selling terminal 49 held by a seller, a power saving terminal 51 held by a power saver, a rescue terminal 52 held by a rescuer, and a rescue terminal 53 held by a rescuer.

The charging terminal 41 is used to generate a charging demand related to an electric vehicle 3 to be charged held by the charging demander and including a content to be charged related to the electric vehicle 3 to be charged. The content to be charged includes A charging type, an entry time of the electric vehicle 3 to be charged, an exit time, an entry battery state of charge when entering, an expected departure battery state of charge, a current battery state of charge, and a minimum battery state of charge , a maximum battery state of charge and a full charge capacity, the charging type is one of a charge-only type and a charge-discharge type, wherein the charge-only type only charges during the parking period, and the charge-discharge type performs charging during the parking period. Can be charged or discharged. The discharge end 42 is used to generate an electricity sales demand related to an electric vehicle 3 to be discharged held by the discharge demander and including a content to be sold. The content to be sold includes the amount of electric energy to be sold and the amount of electric energy to be sold. The price of electricity. The green electricity charging terminal 43 is used to generate a green electricity purchase demand related to an electric vehicle 3 to be charged held by the green electricity charging demander and including a green electricity content that the person wants to purchase green electricity content. Including the amount of green electricity to be purchased and the price of the green electricity to be purchased. The green electricity discharge terminal 44 is used to generate a green electricity sales demand related to an electric vehicle 3 to be discharged held by the green electricity discharge demander and including a green electricity content to be sold. The green electricity content to be sold includes The amount of green electricity to be sold and the price of the green electricity to be sold. The operating terminal 45 is used to generate a power purchase demand including a content to be purchased, a support request related to electric energy, another power selling demand including another content to be sold, and another demand to sell green electricity including another content to be purchased. Green electricity purchase demand, another green electricity sales demand including another green electricity content to be sold, and an electricity saving demand related to demand response and including a desired power saving content, the desired purchase content includes the amount of electricity to be purchased. and the price of the electric energy to be purchased. The other content to be sold includes the amount of electric energy to be sold and the price of the electric energy to be sold. The other content to purchase green electricity includes the amount of green electric energy to be purchased and the price to be purchased. The price of green electricity. The other green electricity content to be sold includes the amount of green electricity to be sold and the price of green electricity to be sold. The power saving content includes a power saving period and a power saving fee to be paid. The green electricity purchase terminal 46 is used to generate another green electricity purchase demand including another green electricity content to be purchased. The further green electricity purchase content includes the amount of green electricity energy to be purchased and the green electricity energy to be purchased. price. The green electricity sales terminal 47 is used to generate another green electricity sales demand that includes another green electricity content to be sold. The further green electricity content to be sold includes the amount of green electricity energy to be sold and the amount of green electricity energy to be sold. price. The purchase terminal 48 is used to generate another electricity purchase demand including another content to be purchased, and the other content to be purchased includes the amount of electric energy to be purchased and the price of the electric energy to be purchased. The sales terminal 49 is used to generate another demand for selling electricity that includes another content to be sold, and the further content to be sold includes the amount of electric energy to be sold and the price of the electric energy to be sold. The power saving terminal 51 is used to generate a power saving compensation demand that includes a content to be compensated, and the content to be compensated includes a power saving period and a power saving compensation to be earned. The help terminal 52 is used to generate a help request related to electric energy and including a request for help purchase content. The rescue terminal 53 is used to generate a rescue demand related to electric energy and including a rescue sales content.

The transaction server 11 is used to run a trading platform 111. The trading platform 111 announces multiple items to be purchased related to electric energy, multiple items to be sold related to electric energy, and multiple items to be sold related to green electricity. Electricity contents, multiple green electricity contents to be purchased related to green electricity, the support request, multiple contents to be saved, multiple contents to be compensated, multiple purchases to be rescued, multiple sales contents to be rescued, and multiple transactions Matching results, multiple actual transaction contents, multiple actual sales contents, multiple actual purchase contents, multiple actual green electricity transaction contents, multiple actual green electricity sale contents, and multiple actual green electricity purchase contents. Among them, the content to be purchased announced on the trading platform 111 can be obtained from the content to be purchased included in the power purchase demand generated by the operating terminal 45, and the content to be purchased in the other power purchase demand generated by the purchasing terminal 48. The other content to be purchased and the content to be sold announced on the trading platform 111 can be obtained from the content to be sold included in the electricity sales demand generated by the discharge terminal 42, and the content generated by the operation terminal 45. The other content to be sold included in the demand for selling electricity, and the content to be sold included in the demand for selling electricity generated by the sales terminal 49 are announced on the trading platform 111 to be sold. The green electricity content can be obtained from the green electricity content to be sold included in the green electricity sales demand generated by the green electricity discharge end 44, and the other green electricity sales demand included in the other green electricity sales demand generated by the operation end 45. A green electricity content to be sold, and the green electricity content to be sold included in the green electricity sales demand generated by the green electricity sales terminal 47, the green electricity content to be purchased can be announced on the trading platform 111. The desired green electricity content contained in the green electricity purchase demand generated by the green electricity charging terminal 43 and the other desired green electricity purchase demand contained in the other green electricity purchase demand generated by the operating terminal 45 are obtained. The green electricity purchase content, and the further green electricity purchase demand included in the green electricity purchase demand generated by the green electricity purchase terminal 46, the support request announced on the trading platform 111 can be obtained from the operation The support request generated by the terminal 45 and the content to be saved on the trading platform 111 can be obtained from the content to be saved included in the power saving demand generated by the operating terminal 45, and the content to be compensated published on the trading platform 111 can be The desired compensation content included in the power saving compensation demand generated by the power saving terminal 51 can be obtained from the desire included in the demand for help generated by the rescue terminal 52. To save purchase content, the sales content to be rescued announced on the trading platform 111 can be obtained from the sales content to be rescued included in the rescue demand generated by the rescue terminal 53. It is worth mentioning that the server unit 12 can generate different transaction matching results according to the content announced on the trading platform 111 through the smart contract 121 in the blockchain system 1 (as shown in Table 1). First trading matching result The matching result regarding the electricity sold by the discharge terminal 42 Second trading matching result Regarding the matching results of purchasing green electricity from the green electricity charging terminal 43 Third trading matching result Regarding the matching results of green electricity sold by the green electricity discharge terminal 44 Fourth trading matching result Regarding the matching results of the operator’s 45 electricity purchases Fifth trading matching results Regarding the matching results of the operator’s 45 electricity sales Sixth trading matching results Regarding the matching results of 45 green electricity purchased by the operator Seventh trading matching results Regarding the matching results of 45 green electricity sold by the operator Eighth trading matching results Regarding the matching results of the green electricity purchasing terminal 46. Ninth trading matching results Regarding the matching results of green electricity sold by the green electricity sales terminal 47 Tenth trading matching results Regarding the matching results of the sales terminal 49 selling electricity Eleventh trading matching results Regarding the matching results of the purchasing terminal 48 electricity purchase Twelfth trading matching results Matching results about the operator’s 45% power saving Thirteenth trading matching results The matching result of the rescue terminal 52 requesting the rescue terminal 53 for electric rescue Table 1

It is worth mentioning that a Transmission System Operator (TSO) and a Distribution System Operator (DSO) will publish a demand and auxiliary response-related release platform. The bidding information of auxiliary response is for people who want to participate in demand and auxiliary response to bid on the publishing platform. When the aggregator responsible for managing the trading platform 111 wins the bid, it can be made available to the operating terminal 45 and the power saving terminal 51 through The trading platform 111 participates in demand response and provides the operation terminal 45 with auxiliary response.

Each charging pile 13 can charge and discharge the parked electric vehicles 3 and is used to continuously sense and write corresponding charging and discharging information into the distributed ledger 15 of the blockchain system 1 .

Each power measuring device 14 is used to continuously sense and write corresponding power information into the distributed ledger 15 of the blockchain system 1 .

The following describes how the charging demander charges the electric vehicle 3 to be charged. First, the charging terminal 41 generates and transmits the charging demand to the transaction platform 111 through the input operation of the charging demander. When the server unit 12 receives the charging demand generated by the charging terminal 41 from the transaction platform 111, the server unit 12 writes the charging demand into the smart contract 121 in the blockchain system 1. Blockchain system 1 distributed ledger 15. Then, the charging demander can park the electric vehicle 3 to be charged at the electric vehicle charging station 21 for charging. Then, the server unit 12 obtains a charging schedule of the electric vehicle 3 to be charged through the smart contract 121 in the blockchain system 1, and writes the charging schedule of the electric vehicle 3 to be charged into the area. In the distributed ledger 15 of the blockchain system 1. Finally, the charging pile 13 electrically connected to the electric vehicle 3 to be charged obtains the charging schedule from the distributed ledger 15 of the blockchain system 1, and charges the electric vehicle 3 to be charged according to the charging schedule. . It is worth mentioning that if the charging type of the content to be charged in the charging demand is a charging and discharging type, the electric vehicle 3 to be charged will be charged or discharged according to the charging schedule.

The following describes how the discharge demander uses the electric vehicle 3 to be discharged to sell electric energy. First, the discharge terminal 42 generates and transmits the electricity sales demand to the trading platform 111 through the input operation of the discharge demander. When the server unit 12 receives the electricity sales demand generated by the discharge terminal 42 from the trading platform 111 and includes the content to be sold, the server unit 12 uses the smart contract 121 in the blockchain system 1 The content to be sold is written into the distributed ledger 15 of the blockchain system 1, and the content to be sold is announced on the trading platform 111 as the content to be sold, and the unmatched content announced on the trading platform 111 is determined. Among all the contents to be purchased, is there a matching purchase content that matches the content to be sold? When the server unit 12 determines that the matching purchase content exists, the server unit 12 determines through the blockchain system 1 The smart contract 121 in the smart contract 121 generates a first transaction matching result (that is, the matching result related to the electricity sold by the discharge terminal 42) based on the content to be sold and the matching purchase content, and writes it into the distributed system of the blockchain system 1 in the ledger 15, and the first transaction matching result is announced on the trading platform 111; when the server unit 12 determines that the matching purchase content does not exist, the server unit 12 can proceed after a preset time. Re-determine whether the matched purchase content exists, or the server unit 12 does not take action first and waits for new unmatched purchase content to be announced on the trading platform 111 before re-determining whether the matched purchase content exists. After successfully matching the paired purchase content, the discharge demander can park the electric vehicle 3 to be discharged at the electric vehicle charging station 21 for discharge. Then, the server unit 12 obtains a discharge schedule of the electric vehicle 3 to be discharged through the smart contract 121 in the blockchain system 1, and writes the discharge schedule of the electric vehicle 3 to be discharged into the area. In the distributed ledger 15 of the blockchain system 1. Finally, the charging pile 13 electrically connected to the electric vehicle 3 to be discharged obtains the discharge schedule from the distributed ledger 15 of the blockchain system 1, and discharges the electric vehicle 3 to be discharged according to the discharge schedule. . It is worth mentioning that the content to be sold in the first transaction matching result includes a discharge demander identification information corresponding to the discharge demander. When the charging pile 13 electrically connected to the electric vehicle 3 to be discharged senses a signal coming from When the electric vehicle 3 held by the discharge demander to be discharged contains the discharge information of the discharge demander's identification information, the charging pile 13 writes the discharge information into the distributed ledger 15 of the blockchain system 1 . Then, the server unit 12 obtains the discharge information corresponding to the content to be sold in the first transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1, And based on the discharge information, an actual transaction content corresponding to the content to be sold in the first transaction matching result is generated, written into the distributed ledger 15 of the blockchain system 1, and the actual transaction content is announced in the Trading Platform 111. Thereby, the discharge demander who sells electric energy can determine whether the electric energy indicated by the content he wants to sell has actually been sold through the verification of the server unit 12 .

The following describes how the green power charging demander uses the electric vehicle 3 to be charged to purchase and sell green power. First, the green power charging terminal 43 generates and transmits the green power through the input operation of the green power charging demander. Go to the trading platform 111 for electricity purchase needs. When the server unit 12 receives the green electricity purchase demand generated by the green electricity charging terminal 43 from the trading platform 111 and includes the green electricity content to be purchased, the server unit 12 uses the blockchain system to The smart contract 121 in 1 writes the green electricity content to be purchased into the distributed ledger 15 of the blockchain system 1, and announces the green electricity content to be purchased on the trading platform 111 as the green electricity content to be purchased. , and determine whether among all the unmatched green electricity contents to be sold announced on the trading platform 111, there is a matching green electricity content for sale that matches the green electricity content to be purchased. When the server unit 12 determines that there is When the green electricity content is matched and sold, the server unit 12 generates a second transaction matching result (that is, The matching result of the green electricity charging terminal 43 buying green electricity) is written into the distributed ledger 15 of the blockchain system 1, and the second transaction matching result is announced on the trading platform 111; when the server When the server unit 12 determines that the paired green electricity content does not exist, the server unit 12 can re-determine whether the paired green electricity content exists after the preset time has elapsed, or the server unit 12 does not first determine whether the paired green electricity content exists. Action, wait for new green electricity content to be sold that has unmatched transactions to be announced on the trading platform 111, and then re-determine whether the matching green electricity content for sale exists. After successfully pairing the green electricity content for sale, the green electricity charging demander can park the electric vehicle 3 to be charged at the electric vehicle charging station 21 to charge the green electricity. Then, the server unit 12 obtains a charging schedule of the electric vehicle 3 to be charged through the smart contract 121 in the blockchain system 1, and writes the charging schedule of the electric vehicle 3 to be charged into the area. In the distributed ledger 15 of the blockchain system 1. Finally, the charging pile 13 electrically connected to the electric vehicle 3 to be charged obtains the charging schedule from the distributed ledger 15 of the blockchain system 1, and charges the electric vehicle 3 to be charged according to the charging schedule. . It is worth mentioning that the green electricity purchase content in the second transaction matching result includes a green electricity charging demander identification information corresponding to the green electricity charging demander. When the electricity is connected to the charger of the electric vehicle 3 to be charged, When the pile 13 senses the charging information from the electric vehicle 3 held by the green electricity charging demander and contains the identification information of the green electricity charging demander, the charging pile 13 writes the charging information into the block. In the distributed ledger 15 of the chain system 1. Then, the server unit 12 obtains the charge corresponding to the green electricity content to be purchased in the second transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1 Information, and based on the charging information, an actual green electricity transaction content corresponding to the green electricity content to be purchased in the second transaction matching result is generated, and written into the distributed ledger 15 of the blockchain system 1, and the The actual green electricity trading content is announced on the trading platform 111. Thereby, the green electricity charging demander who purchases green electricity can determine whether he has indeed purchased the green electricity indicated by the green electricity content he wants to purchase through verification by the server unit 12 .

The following describes how the green electricity discharge demander uses the electric vehicle 3 to be discharged to sell green electricity. First, the green electricity discharge terminal 44 generates and transmits the green electricity sales through the input operation of the green electricity discharge demander. Demand to the trading platform 111. When the server unit 12 receives the green electricity sales demand generated by the green electricity discharge terminal 44 from the trading platform 111 and includes the green electricity content to be sold, the server unit 12 uses the blockchain system 1 The smart contract 121 in the smart contract writes the green electricity content to be sold into the distributed ledger 15 of the blockchain system 1, and announces the green electricity content to be sold on the trading platform 111 as the green electricity content to be sold, And determine whether among all the unmatched green electricity content to be purchased announced on the trading platform 111, there is a matching green electricity content to be purchased that matches the green electricity content to be sold. When the server unit 12 determines that there is When matching and purchasing green electricity content, the server unit 12 generates a third transaction matching result (i.e., related The green electricity discharge terminal 44 sells the green electricity matching result), and writes it into the distributed ledger 15 of the blockchain system 1, and announces the third transaction matching result on the trading platform 111; when the server When the unit 12 determines that there is no such matching to purchase green electricity content, the server unit 12 may re-determine whether there is such matching to purchase green electricity content after the preset time has elapsed, or the server unit 12 may not take action first. , waiting for new unmatched green electricity content to be purchased to be announced on the trading platform 111, and then re-determining whether the matching green electricity content exists. After the green electricity content is successfully matched and purchased, the green electricity discharge demander can park the electric vehicle 3 to be discharged at the electric vehicle charging station 21 for discharge. Then, the server unit 12 obtains a discharge schedule of the electric vehicle 3 to be discharged through the smart contract 121 in the blockchain system 1, and writes the discharge schedule of the electric vehicle 3 to be discharged into the area. In the distributed ledger 15 of the blockchain system 1. Finally, the charging pile 13 electrically connected to the electric vehicle 3 to be discharged obtains the discharge schedule from the distributed ledger 15 of the blockchain system 1, and discharges the electric vehicle 3 to be discharged according to the discharge schedule. . It is worth mentioning that the content of the green electricity to be sold in the third transaction matching result includes a green electricity discharge demander identification information corresponding to the green electricity discharge demander. When the electricity is connected to the charger of the electric vehicle 3 to be discharged, When the pile 13 senses the discharge information from the electric vehicle 3 held by the green electricity discharge demander and contains the identification information of the green electricity discharge demander, the charging pile 13 writes the discharge information into the block. In the distributed ledger 15 of the chain system 1. Then, the server unit 12 obtains the discharge corresponding to the green electricity content to be sold in the third transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1 Information, and based on the discharge information, an actual green electricity transaction content corresponding to the green electricity content to be sold in the third transaction matching result is generated, and written into the distributed ledger 15 of the blockchain system 1, and the The actual green electricity trading content is announced on the trading platform 111. Thereby, the green electricity discharge demander who sells green electricity can determine whether the green electricity indicated by the green electricity content he wants to sell has actually been sold through the verification of the server unit 12 .

The following describes how the operator purchases electric energy. First, the operation terminal 45 generates and transmits the power purchase demand to the trading platform 111 through the operator's input operation. When the server unit 12 receives the electricity purchase demand containing the content to be purchased generated by the operating terminal 45 from the trading platform 111, the server unit 12 uses the smart contract 121 in the blockchain system 1 to The content to be purchased is written into the distributed ledger 15 of the blockchain system 1, and the content to be purchased is announced on the trading platform 111 as the content to be purchased, and the unmatched content announced on the trading platform 111 is determined. Among all the contents to be sold, whether there is a matching selling content that matches the content to be purchased, when the server unit 12 determines that the matching selling content exists, the server unit 12 determines through the blockchain system 1 The smart contract 121 in the smart contract generates a fourth transaction matching result (that is, the matching result related to the electricity purchase by the operator 45) based on the desired purchase content and the matched sales content, and writes it into the decentralized system of the blockchain system 1 In the ledger 15, and the fourth transaction matching result is announced on the trading platform 111; when the server unit 12 determines that there is no matching sales content, the server unit 12 can continue after the preset time. Re-determine whether the matched selling content exists, or the server unit 12 does not take action first and waits for new unmatched selling content to be announced on the trading platform 111 before re-determining whether the matched selling content exists. After the matching sales content is successfully matched, the operator can purchase electric energy. Next, depending on whether the object of selling electricity to the operator is the discharge demander holding the electric vehicle 3 to be discharged or other operators of other electric vehicle charging stations 21, there will be different electricity selling channels. When selling electricity to When the operator's target is a discharge demander who holds an electric vehicle 3 to be discharged, the discharge demander will park the electric vehicle 3 held by it to be discharged at the electric vehicle charging station 21 to discharge and sell electricity to This operator; when the target of selling electricity to this operator is another operator, the other operator transmits electric energy to the electric vehicle charging station 21 through the power grid to sell electricity to this operator. It is worth mentioning that when the target of selling electricity to the operator is a discharge demander who holds the electric vehicle 3 to be discharged, the desired purchase content in the fourth transaction matching result includes an operator corresponding to the operator. According to the operator identification information, when one of the charging piles 13 of the electric vehicle charging station 21 senses the discharge behavior of any parked electric vehicle 3, the charging pile 13 will respond to the discharge behavior and include the operator. The discharge information of the identification information is written into the distributed ledger 15 of the blockchain system 1 . Then, the server unit 12 obtains the discharge information corresponding to the content to be purchased in the fourth transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1, And based on the discharge information, an actual transaction content corresponding to the desired purchase content in the fourth transaction matching result is generated, written into the distributed ledger 15 of the blockchain system 1, and the actual transaction content is announced in the Trading Platform 111. Thereby, the operator who purchases electric energy can determine whether the electric energy indicated by the content he wants to purchase has actually been purchased through the verification of the server unit 12 . When the object of selling electricity to the operator is another operator, the matching sales content in the fourth transaction matching result includes a piece of seller identification information corresponding to the seller (ie, other operators). When the installation When the electrical energy measuring device 14 senses electrical energy information at the vendor's electrical energy generation site and corresponds to the vendor, the electrical energy measuring device 14 generates a signal corresponding to the vendor based on the electrical energy information and the vendor identification information. An energy content of the information is identified and written into the distributed ledger 15 of the blockchain system 1. Then, the server unit 12 obtains the information from the blockchain system 1 through the smart contract 121 in the blockchain system 1. The distributed ledger 15 obtains the electric energy content corresponding to the paired sales content, and generates an actual sales content corresponding to the paired sales content in the fourth transaction matching result based on the electric energy content, and writes it into the blockchain system 1 In the distributed ledger 15, the actual sales content is announced on the trading platform 111. In addition, the content to be purchased in the fourth transaction matching result includes the operator identification information corresponding to the operator. When installed When the electric energy measuring device 14 in the building 2 and corresponding to the operator senses electric energy information, the electric energy measuring device 14 generates another electric energy measuring device 14 corresponding to the operator identification information based on the electric energy information and the operator identification information. An electrical energy content is written into the distributed ledger 15 of the blockchain system 1, and the server unit 12 obtains it from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1. Obtain another electric energy content corresponding to the content to be purchased, and generate an actual purchase content corresponding to the content to be purchased in the fourth transaction matching result based on the other electric energy content, and write it into the decentralization of the blockchain system 1 In the account book 15, the actual purchase content is announced on the trading platform 111. In this way, whether it is the discharge demander or other operators who sell electric energy, or the operator who buys electric energy, they can use the verification of the server unit 12 to determine whether the party selling electric energy and the party buying electric energy actually rely on the verification process. The desired purchase content of the fourth transaction matching result is matched with the selling content to perform electric energy buying and selling.

The following describes how the operator generates the support request. First, the operator 45 generates and sends the support request to the transaction platform 111 through the operator's input operation. When the server unit 12 receives the support request generated by the operating terminal 45 from the trading platform 111, the server unit 12 uses the smart contract 121 in the blockchain system 1 to The contract 121 writes the support request into the distributed ledger 15 of the blockchain system 1 and announces the support request on the trading platform 111. The discharge terminal 42 responds to the support request posted on the trading platform 111. This demand for electricity sales is generated. However, in other implementation methods, the discharge end 42 can also actively generate the power selling demand without first receiving the support request before responding to the support request to generate the power selling demand.

The following describes how the operator sells electric energy. First, the operation terminal 45 generates and transmits another electricity sales demand to the trading platform 111 through the operator's input operation. When the server unit 12 receives the other electricity sales demand generated by the operating terminal 45 from the trading platform 111 and includes the other content to be sold, the server unit 12 uses the blockchain system 1 to The smart contract 121 writes the other content to be sold into the distributed ledger 15 of the blockchain system 1, and announces the other content to be sold on the trading platform 111 as the content to be sold, and determines the announcement. Among all the unmatched contents to be purchased on the trading platform 111, whether there is another matched purchase content that matches the other content to be sold, when the server unit 12 determines that there is another matched purchase content. , the server unit 12 uses the smart contract 121 in the blockchain system 1 to generate a fifth transaction matching result (that is, related to the operation terminal 45 selling electricity based on the other content to be sold and the other matching purchase content). the matching result), and write it into the distributed ledger 15 of the blockchain system 1, and announce the fifth transaction matching result on the trading platform 111; when the server unit 12 determines that there is no such other When matching purchase content, the server unit 12 can re-determine whether there is another matching purchase content after the preset time has elapsed, or the server unit 12 may not take action first and wait for a new unmatched transaction. After the content to be purchased is announced on the trading platform 111, it is re-determined whether there is another matching purchase content. After successfully matching the other matching purchase content, the operating terminal 45 can sell the electric energy. Next, depending on whether the operator sells electricity to residents of Building 2 or to other operators of other electric vehicle charging stations 21, there will be different electricity sales channels. When the operator sells electricity to residents of Building 2, , the operator uses internal wires to output electric energy to the corresponding residents of Building 2; when the operator sells electricity to other operators, the operator transmits electric energy to other operators through the power grid. It is worth mentioning that the content to be sold in the fifth transaction matching result includes the operator identification information corresponding to the operator. When the power energy measuring device 14 is installed in the building 2 and corresponds to the operator, When the electric energy information is sensed, the electric energy measuring device 14 generates another electric energy content corresponding to the operator identification information based on the electric energy information and the operator identification information and writes it into the distributed ledger of the blockchain system 1 In 15, the server unit 12 obtains another data corresponding to the content to be sold in the fifth transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1. Electric energy content, and based on the further electric energy content, an actual sales content corresponding to another content to be sold in the fifth transaction matching result is generated, and written into the distributed ledger 15 of the blockchain system 1, and The actual sales content is announced on the trading platform 111. Thereby, the operator that sells electric energy can determine whether the electric energy indicated by the content it wants to sell has actually been sold through the verification of the server unit 12 .

The following describes how the operator purchases green power. First, the operator 45 generates and transmits another green power purchase demand to the trading platform 111 through the operator's input operation. When the server unit 12 receives the other green electricity purchase demand generated by the operator 45 from the trading platform 111 and includes the content of another green electricity to be purchased, the server unit 12 uses the block The smart contract 121 in the chain system 1 writes the other green electricity content to be purchased into the distributed ledger 15 of the blockchain system 1, and announces the other green electricity content to be purchased on the trading platform 111. As the green electricity content to be purchased, and it is determined whether among all the green electricity contents to be sold that are not matched and transacted and announced on the trading platform 111, there is another green electricity content for sale that matches the other green electricity content to be purchased, When the server unit 12 determines that there is another pair selling green electricity content, the server unit 12 uses the smart contract 121 in the blockchain system 1 to communicate with the other pair based on the green electricity content that the other person wants to purchase. The content of selling green electricity generates a sixth transaction matching result (that is, the matching result related to the purchase of green electricity by the operator 45), and writes it into the distributed ledger 15 of the blockchain system 1, and the sixth transaction matching result is generated. The transaction matching results are announced on the trading platform 111; when the server unit 12 determines that there is no green electricity content for sale in another pair, the server unit 12 can re-determine whether there is such another pair after the preset time has elapsed. A matching sale of green electricity content, or the server unit 12 does not take action at first and waits for new green electricity content to be sold without matching transactions to be announced on the trading platform 111 before re-determining whether there is another matching sale. Green electricity content. After successfully matching the green electricity content sold by the other pair, the operator can purchase green electricity energy. Next, depending on whether the green electricity sold to the operator is a green electricity discharge demander, or other operators of other electric vehicle charging stations 21 or solar energy suppliers, there will be different ways to sell green electricity. When selling green electricity to When the operator's target is a green electricity discharge demander holding an electric vehicle 3 to be discharged, the green electricity discharge demander will park the electric vehicle 3 to be discharged at the electric vehicle charging station 21 for green electricity discharge. Electrical discharge is used to sell green electricity to the operator; when the object of selling green electricity to the operator is other operators or solar energy suppliers, the other operators or solar energy suppliers transmit green electricity through the power grid to charge the electric vehicle. Station 21 sells green electricity to the operator. It is worth mentioning that when the object of selling green electricity to the operator is a green electricity discharge demander who holds the electric vehicle 3 to be discharged, the content of another green electricity purchase in the sixth transaction matching result includes the corresponding According to the operator identification information of the operator, when one of the charging piles 13 of the electric vehicle charging station 21 senses the green discharge behavior of any parked electric vehicle 3, the charging pile 13 will The discharge information corresponding to the green electricity discharge behavior and including the operator identification information is written into the distributed ledger 15 of the blockchain system 1 . Then, the server unit 12 obtains another green electricity content to be purchased corresponding to the sixth transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1 The discharge information, and based on the discharge information, an actual green electricity transaction content corresponding to another green electricity content to be purchased in the sixth transaction matching result is generated, and written into the distributed ledger 15 of the blockchain system 1 , and announce the actual green electricity transaction content on the trading platform 111. Thereby, the operator that purchases green electricity can determine whether it has indeed purchased the green electricity indicated by the content of the green electricity it wishes to purchase through verification by the server unit 12 . When the object of selling green electricity to the operator is other operators or solar energy suppliers, the content of the other matching green electricity sales in the sixth transaction matching result includes a link corresponding to the green electricity seller (i.e., other operators). or solar energy supplier), when the power measurement device 14 installed at the green power generation place of the green power vendor and corresponding to the green power vendor senses the power information. , the electric energy measuring device 14 generates another electric energy content corresponding to the green electricity seller identification information based on the electric energy information and the green electricity seller identification information and writes it into the distributed ledger 15 of the blockchain system 1 , then, the server unit 12 obtains another matching green electricity sales corresponding to the sixth transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1 Another electric energy content of the content, and based on the further electric energy content, an actual green electricity sales content corresponding to another paired green electricity sales content in the sixth transaction matching result is generated, and written into the decentralized distribution of the blockchain system 1 In the ledger 15, the actual green electricity sales content is announced on the trading platform 111. In addition, the other green electricity content to be purchased in the sixth transaction matching result includes the operator identification corresponding to the operator. Information, when the electric energy measuring device 14 installed in the building 2 and corresponding to the operator senses electric energy information, the electric energy measuring device 14 generates information corresponding to the operation based on the electric energy information and the operator identification information. The provider identifies another energy content of the information and writes it into the distributed ledger 15 of the blockchain system 1. The server unit 12 obtains information from the blockchain system 1 through the smart contract 121 in the blockchain system 1. The distributed ledger 15 obtains another electric energy content corresponding to another green electricity content to be purchased in the sixth transaction matching result, and generates an electric energy content corresponding to the desired to purchase content in the sixth transaction matching result based on the further electric energy content. An actual purchase of green electricity content is written into the distributed ledger 15 of the blockchain system 1, and the actual purchase of green electricity content is announced on the trading platform 111. In this way, whether the discharge demander, other operators or solar energy suppliers sell green power, or the operator buys power, they can determine the method of selling green power through the verification of the server unit 12. Whether the party buying green electricity is indeed buying and selling green electricity based on the sixth transaction matching result of the other green electricity content to be purchased and the green electricity content sold by the other pair.

The following describes how the operator sells green electricity. First, the operator 45 generates and transmits another green electricity sales demand to the trading platform 111 through the operator's input operation. When the server unit 12 receives the other green electricity sales demand generated by the operating terminal 45 from the trading platform 111 and includes another green electricity content to be sold, the server unit 12 uses the blockchain system to The smart contract 121 in 1 writes the other green electricity content to be sold into the distributed ledger 15 of the blockchain system 1, and announces the other green electricity content to be sold on the trading platform 111 as a pending transaction. Sell green electricity content, and determine whether among all the unmatched green electricity content to be purchased announced on the trading platform 111, there is another matched purchase of green electricity content that matches the other green electricity content to be sold. When that When the server unit 12 determines that there is another pair purchasing green electricity content, the server unit 12 purchases green electricity content with the other pair based on the other green electricity content to be sold through the smart contract 121 in the blockchain system 1 The electricity content generates a seventh transaction matching result (that is, the matching result related to the operation terminal 45 selling green electricity), and writes it into the distributed ledger 15 of the blockchain system 1, and matches the seventh transaction The result is announced on the trading platform 111; when the server unit 12 determines that there is no other pairing to purchase green electricity content, the server unit 12 can re-determine whether there is another pairing after the preset time has elapsed. Purchase green electricity content, or the server unit 12 does not take action first, waits for new unmatched green electricity content to be purchased to be announced on the trading platform 111, and then re-determines whether there is another matching purchase of green electricity. content. After successfully matching the other pair to purchase the green electricity content, the operating terminal 45 can sell the green electricity energy. Next, depending on whether the operator sells green electricity to residents of the building 2, other operators of other electric vehicle charging stations 21, or green electricity charging demanders, there will be different electricity sales channels. When the operator sells green electricity When the target of the electricity is the residents of Building 2, the operator uses internal wires to output green power to the corresponding residents of Building 2; when the operator sells green electricity to other operators, the operator uses the power grid to Transmit green power to other operators; when the operator sells green power to green power charging customers who hold electric vehicles 3 to be charged, the operator uses the charging pile 13 of the electric vehicle charging station 21 The electric vehicle 3 parked at the electric vehicle charging station 21 to be charged is charged with green electricity to sell green electricity to those who require green electricity charging. It is worth mentioning that when the operator sells green electricity to a green electricity charging demander who holds an electric vehicle 3 to be charged, another green electricity content to be sold in the seventh transaction matching result includes content corresponding to the According to the operator identification information of the operator, when one of the charging piles 13 of the electric vehicle charging station 21 senses the green charging behavior of any parked electric vehicle 3, the charging pile 13 will The charging information that should be charged for green electricity and includes the identification information of the operator is written into the distributed ledger 15 of the blockchain system 1. Then, the server unit 12 obtains another green electricity content to be sold corresponding to the seventh transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1 Charging information, and based on the charging information, an actual green electricity transaction content corresponding to another green electricity content to be sold in the seventh transaction matching result is generated, and written into the distributed ledger 15 of the blockchain system 1 , and announce the actual green electricity transaction content on the trading platform 111. Thereby, the operator that sells green electricity can use the verification of the server unit 12 to determine whether it has actually sold the green electricity indicated by the green electricity content it wants to sell. When the operator sells green electricity to residents of Building 2 or other operators, another green electricity content to be sold in the seventh transaction matching result includes the operator identification information corresponding to the operator. When installed When the electric energy measuring device 14 located in the building 2 and corresponding to the operator senses the electric energy information, the electric energy measuring device 14 generates a signal corresponding to the operator identification information based on the electric energy information and the operator identification information. Another electric energy content is written into the distributed ledger 15 of the blockchain system 1. The server unit 12 obtains the content from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1. 15 Obtain another electric energy content corresponding to another green electricity content to be sold in the seventh transaction matching result, and generate another electric energy content corresponding to another green electricity content to be sold in the seventh transaction matching result based on the further electric energy content. An actual green electricity sales content is written into the distributed ledger 15 of the blockchain system 1, and the actual green electricity sales content is announced on the trading platform 111. Thereby, the operator that sells green electricity can determine whether the green electricity indicated by the content it wants to sell has actually been sold through the verification of the server unit 12 .

The following describes how the server unit 12 schedules each electric vehicle 3 parked at the electric vehicle charging station 21 and the electric energy storage device 212 . The server unit 12 purchases at least one unit of electric power through the smart contract 121 in the blockchain system 1 based on the maximum power of a transformer of the electric vehicle charging station 21 and the energy storage information corresponding to the electric energy storage device 212 . A purchase price, at least one winning bid price participating in the demand auction, and a payment that the electric vehicle charging station 21 needs to pay to the electric vehicle 3 to be charged for the unit of electric power when the electric vehicle 3 to be charged is discharged. price, a penalty price of the electric vehicle charging station 21 when the electric vehicle 3 to be charged is not fully charged with the unit of electric power, a degradation cost of the electric energy storage device 212 for charging or discharging the unit of electric power, and a cost of the loads 22 The total load 22 electric power, a solar electric power generated by the solar module 211, the income of the electric vehicle charging station 21 from participating in auxiliary services, and the first transaction stored in the distributed ledger 15 of the blockchain system 1 The matching results, the second trading matching results, the third trading matching results, the fourth trading matching results, the fifth trading matching results, the sixth trading matching results, and the seventh trading matching results use a non-linear programming to obtain each parking result. A charging and discharging schedule of the electric vehicle 3 and the electric energy storage device 212.

The following describes how the green power purchaser purchases green power energy. First, the green power purchase terminal 46 generates and transmits another green power purchase through the input operation of the green power purchaser (such as other operators or building 2 users). The electricity demand goes to the trading platform 111. When the server unit 12 receives from the trading platform 111 another green electricity purchase request containing another green electricity content to be purchased generated by the green electricity purchase terminal 46, the server unit 12 passes the area The smart contract 121 in the blockchain system 1 writes the further green electricity content to be purchased into the distributed ledger 15 of the blockchain system 1, and announces the further green electricity purchase content to the trading platform 111 As the green electricity content to be purchased, and determine whether among all the green electricity contents to be sold that are not matched and transacted and announced on the trading platform 111, there is another green electricity content for sale that matches the green electricity content to be purchased. , when the server unit 12 determines that there is another matching green electricity content for sale, the server unit 12 uses the smart contract 121 in the blockchain system 1 to match the green electricity content to be purchased with the other one. The matching and selling green electricity content generates an eighth transaction matching result (that is, the matching result related to the green electricity purchasing terminal 46 purchasing green electricity), and writes it into the distributed ledger 15 of the blockchain system 1, and The eighth trading matching result is announced on the trading platform 111; when the server unit 12 determines that there is no matching green electricity content for sale, the server unit 12 can re-determine whether after the preset time has elapsed. There is another matching green electricity content for sale, or the server unit 12 does not act for now and waits for new green electricity content to be sold without matching transactions to be announced on the trading platform 111 before re-determining whether there is another green electricity content. A pair sells green electricity content. After the green electricity sales content is successfully matched, the green electricity purchaser can purchase green electricity. It is worth mentioning that another green electricity purchase content in the eighth transaction matching result includes a green electricity purchaser identification information corresponding to the green electricity purchaser. When corresponding to the power energy measurement of the green electricity purchaser, When the device 14 senses the power information, the power measurement device 14 generates another power content corresponding to the green power buyer identification information based on the power information and the green power purchaser identification information and writes it into the blockchain system. In the distributed ledger 15 of the blockchain system 1, the server unit 12 obtains the information corresponding to the eighth transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1. Another electric energy content that wants to purchase green electricity content, and based on the other electric energy content, an actual purchased green electricity content corresponding to another green electricity content that wants to purchase in the eighth transaction matching result is generated, and written into this area In the distributed ledger 15 of the blockchain system 1, the actual purchase of green electricity is announced on the trading platform 111. Thereby, the green electricity buyer who purchases green electricity can determine whether he has actually purchased the green electricity indicated by the content of the green electricity he wants to purchase through verification by the server unit 12 .

The following explains how the green electricity seller sells green electricity. First, the green electricity sales terminal 47 generates and transmits another green electricity sales through the input operation of the green electricity seller (such as other operators or solar energy suppliers). Demand to the trading platform 111. When the server unit 12 receives another green electricity sales request generated by the green electricity sales terminal 47 from the trading platform 111 and includes another green electricity content to be sold, the server unit 12 uses the block The smart contract 121 in the chain system 1 writes the further green electricity content to be sold into the distributed ledger 15 of the blockchain system 1, and announces the further green electricity content to be sold on the trading platform 111. As the green electricity content to be sold, and it is determined whether there is another green electricity content to be purchased that matches the green electricity content to be sold among all the unmatched green electricity content to be purchased and announced on the trading platform 111, When the server unit 12 determines that there is another pairing to purchase green electricity content, the server unit 12 uses the smart contract 121 in the blockchain system 1 to communicate with the other pairing according to the green electricity content to be sold. Purchasing green electricity content generates a ninth transaction matching result (that is, the matching result related to the green electricity sales by the green electricity sales terminal 47), and writes it into the distributed ledger 15 of the blockchain system 1, and the The ninth transaction matching result is announced on the trading platform 111; when the server unit 12 determines that there is no such matching to purchase green electricity content, the server unit 12 can re-determine whether it exists after the preset time has elapsed. Another matching purchase of green electricity content, or the server unit 12 does not take action first and waits for new unmatched green electricity content to be purchased to be announced on the trading platform 111 before re-determining whether there is another green electricity content. Match and purchase green electricity content. After successfully matching and purchasing green electricity content, the green electricity seller can sell green electricity. It is worth mentioning that another green electricity content to be sold in the ninth transaction matching result includes the green electricity vendor identification information corresponding to the green electricity vendor. When corresponding to the energy measurement of the green electricity vendor, When the device 14 senses the electric energy information, the electric energy measuring device 14 generates another electric energy content corresponding to the green electricity seller identification information based on the electric energy information and the green electricity seller identification information and writes it into the blockchain system. In the distributed ledger 15 of 1, the server unit 12 then obtains the ninth transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1 Another electric energy content that is intended to be sold in the green electricity content, and based on the further electric energy content, an actual green electricity content that is corresponding to the other intended to be sold green electricity content in the ninth transaction matching result is generated, and written In the distributed ledger 15 of the blockchain system 1, the actual green electricity sales content is announced on the trading platform 111. Thereby, the green electricity seller who sells green electricity can determine whether he has actually sold the green electricity indicated by the green electricity content he wants to sell through verification by the server unit 12 .

The following describes how the seller sells electric energy. First, the sales terminal 49 generates and transmits another electricity sales demand to the trading platform 111 through the input operation of the seller (eg, other operators). When the server unit 12 receives another demand for selling electricity generated by the selling terminal 49 from the trading platform 111 and contains another content to be sold, the server unit 12 uses the The smart contract 121 writes the further content to be sold into the distributed ledger 15 of the blockchain system 1, and announces the further content to be sold on the trading platform 111 as the content to be sold, and the determination is announced on Among all the unmatched contents to be purchased on the trading platform 111, whether there is another matching purchase content that matches the another content to be sold, when the server unit 12 determines that there is another matching purchase content, The server unit 12 uses the smart contract 121 in the blockchain system 1 to generate a tenth transaction matching result (that is, related to the sale of electricity by the sales terminal 49 based on the further content to be sold and the further paired purchase content). Matching result), and write it into the distributed ledger 15 of the blockchain system 1, and announce the tenth transaction matching result on the trading platform 111; when the server unit 12 determines that there is no further pairing When purchasing content, the server unit 12 can re-determine whether there is another matching purchase content after the preset time has elapsed, or the server unit 12 may not take action first and wait for a new unmatched transaction to be completed. After the purchase content is announced on the trading platform 111, it is re-determined whether there is another matching purchase content. After successfully matching the purchased content, the seller can sell electricity. It is worth mentioning that another content to be sold in the tenth transaction matching result includes seller identification information corresponding to the seller. When the electric energy measuring device 14 corresponding to the seller senses the electric energy information, The electrical energy measuring device 14 generates another electrical energy content corresponding to the vendor identification information based on the electrical energy information and the vendor identification information and writes it into the distributed ledger 15 of the blockchain system 1. Then, the server The processor unit 12 obtains another electrical energy content corresponding to another content to be sold in the tenth transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1, And based on the further electric energy content, an actual sales content corresponding to another content to be sold in the tenth transaction matching result is generated, and written into the distributed ledger 15 of the blockchain system 1, and the actual sales content is The content is announced on the trading platform 111. Thereby, the seller who sells electric energy can determine whether the electric energy indicated by the content he wants to sell has actually been sold through the verification of the server unit 12 .

The following describes how the buyer purchases electric energy. First, the purchasing terminal 48 generates and transmits another power purchase demand to the trading platform 111 through the input operation of the buyer (eg, other operators or building 2 users). When the server unit 12 receives the other electricity purchase demand generated by the purchasing terminal 48 from the trading platform 111 and includes another content to be purchased, the server unit 12 uses the The smart contract 121 writes the other content to be purchased into the distributed ledger 15 of the blockchain system 1, and announces the other content to be purchased on the trading platform 111 as the content to be purchased, and the determination is announced on Among all the unmatched contents to be sold on the trading platform 111, whether there is another matching selling content that matches the other content to be purchased, when the server unit 12 determines that the other matching selling content exists, The server unit 12 uses the smart contract 121 in the blockchain system 1 to generate an eleventh transaction matching result (that is, related to the purchase of electricity by the purchasing terminal 48 based on the other desired purchase content and the other paired sales content). the matching result), and write it into the distributed ledger 15 of the blockchain system 1, and announce the eleventh transaction matching result on the trading platform 111; when the server unit 12 determines that there is no such other When a pair of sales content is matched, the server unit 12 can re-determine whether there is another matched sales content after the preset time has elapsed, or the server unit 12 may not take action first and wait for new unmatched transactions. After the content to be sold is announced on the trading platform 111, it is re-determined whether there is another matching selling content. After successfully matching the other paired sales content, the buyer can purchase electric energy. It is worth mentioning that another content to be purchased in the eleventh transaction matching result includes a buyer identification information corresponding to the buyer. When the power measuring device 14 corresponding to the buyer identification information senses When receiving electric energy information, the electric energy measuring device 14 generates another electric energy content corresponding to the buyer's identification information based on the electric energy information and the buyer's identification information and writes it into the distributed ledger 15 of the blockchain system 1, The server unit 12 obtains another item corresponding to another desired purchase content in the eleventh transaction matching result from the distributed ledger 15 of the block chain system 1 through the smart contract 121 in the block chain system 1 Electric energy content, and based on the further electric energy content, an actual purchase content corresponding to another desired purchase content in the eleventh transaction matching result is generated, and written into the distributed ledger 15 of the blockchain system 1, and Announce the actual purchase content on the trading platform 111. Thereby, the buyer of electric energy can determine whether he has actually purchased the electric energy indicated by the content of the purchase through the verification of the server unit 12 .

The following describes how the operator asks the users of the building 2 to save power. First, the operator 45 generates and transmits the power saving demand to the trading platform 111 through the operator's input operation. When the server unit 12 receives the power saving request generated by the operating terminal 45 from the trading platform 111 and includes the power saving content, the server unit 12 converts the power saving request through the smart contract 121 in the blockchain system 1 The content to be saved is written into the distributed ledger 15 of the blockchain system 1, and the content to be saved is announced on the trading platform 111 as the content to be saved. Then, the power saving terminal 51 responds to a to-be-matched power-saving content among the power-saving content announced on the trading platform 111 through the input operation of the power-saver (that is, the user of the building 2), and generates and transmits the power-saving compensation. Demand to the trading platform 111. When the server unit 12 receives the power saving compensation request containing the content to be compensated generated by the power saving terminal 51 in response to the power saving content to be matched from the trading platform 111, the server unit 12 passes the area The smart contract 121 in the blockchain system 1 determines whether the unmatched power-saving content announced on the trading platform 111 matches the power-saving content to be compensated, and as a matched power-saving content, when the server unit 12 When it is determined that the paired power saving content is matched, the server unit 12 generates a twelfth transaction matching result (that is, related to the paired power saving content) based on the content to be compensated and the paired power saving content through the smart contract 121 in the blockchain system 1 The matching result of the operation end 45 power saving) is written into the distributed ledger 15 of the blockchain system 1, and the twelfth transaction matching result is announced on the trading platform 111. When the server unit 12 determines that the matched power-saving content cannot be matched, the server unit 12 stops pairing the content to be compensated. The power saver corresponding to the content to be compensated that is successfully matched can save power during the power saving time indicated by the content to be compensated. It is worth mentioning that the content to be compensated in the twelfth transaction matching result includes a power saver identification information corresponding to the power saver. When the power energy measuring device 14 corresponding to the power saver senses the power information, , the electric energy measuring device 14 generates another electric energy content corresponding to the electric energy saver identification information based on the electric energy information and the electric energy saver identification information and writes it into the distributed ledger 15 of the blockchain system 1 . Then, the server unit 12 obtains another data corresponding to the content to be compensated in the twelfth transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1 Electric energy content, and generate an actual power saving content corresponding to the content to be compensated in the twelfth transaction matching result based on the further electric energy content, and write the actual power saving content into the distributed ledger of the blockchain system 1 15 and announced on the trading platform 111. Thereby, the power saver who saves power can determine through verification by the server unit 12 whether the power indicated by the content to be compensated is indeed saved.

The following describes how the help seeker asks others to support electric energy. First, the help request terminal 52 generates and transmits the help request to the trading platform 111 through the input operation of the help seeker. When the server unit 12 receives the help request generated by the help client 52 from the trading platform 111 and includes the requested help purchase content, the server unit 12 uses the smart contract 121 in the blockchain system 1 to The purchase content for help is written into the distributed ledger 15 of the blockchain system 1, and the purchase content for help is announced on the trading platform 111 as the purchase content for help. In this embodiment, the situation in which the rescuer sends the rescue request through the rescue terminal 52 may be that when the rescuer is driving one of the electric vehicles 3 he owns, the power is insufficient while driving. Therefore, the rescue request is The purchase content for seeking help includes the location of an electric vehicle 3 owned by the seeker, the amount of electric energy to be purchased, and the price of the electric energy to be purchased. The electric vehicle in the purchase content for seeking help is announced on the trading platform 111. The location of the electric vehicle 3 may be the GPS coordinates of the electric vehicle 3 owned by the rescuer, or, in order to protect the privacy of the rescuer, the location of the electric vehicle 3 in the purchase content of the rescue request may be the location of the electric vehicle 3 owned by the rescuer. The GPS coordinates of the electric vehicle 3 held by the person asking for help are only in the area where the electric vehicle 3 owned by the person asking for help is located. Then, the rescue terminal 53 responds to a desired purchase content to be matched among the purchase contents to be rescued announced on the trading platform 111 through the rescuer's input operation, and generates and transmits the rescue demand to the trading platform 111 . When the server unit 12 receives from the trading platform 111 the rescue request containing the sales content to be rescued generated by the rescue terminal 53 in response to the purchased content to be matched, the server unit 12 The smart contract 121 in the blockchain system 1 determines whether the unmatched rescue purchase content announced on the trading platform 111 is matched with the rescue sales content, and as a matched rescue purchase content, when When the server unit 12 determines that the matched rescue purchase content is matched, the server unit 12 generates a thirteenth transaction based on the rescue sales content and the matched rescue purchase content through the smart contract 121 in the blockchain system 1 The matching result (that is, the matching result regarding the rescue terminal 52 requesting the rescue terminal 53 for power rescue) is written into the distributed ledger 15 of the blockchain system 1, and the thirteenth transaction matching result is announced. 111 on the trading platform. When the server unit 12 determines that the matching rescue purchase content cannot be matched, the server unit 12 stops the matching of the rescue sales content. The rescuer corresponding to the successfully matched rescue selling content can drive the electric vehicle 3 held by him to the location of the electric vehicle 3 indicated by the matching rescue purchase content and use the power transmission device held by the rescuer. 16 transmits electricity to the electric vehicle 3 owned by the rescuer. It is worth mentioning that the sales content to be rescued in the thirteenth transaction matching result includes the rescuer identification information corresponding to the rescuer. When corresponding to the rescuer When the discharge information is sensed by the rescuer's power transmission device 16, the power transmission device 16 generates a power transmission content corresponding to the rescuer identification information based on the discharge information and the rescuer identification information and writes it into the blockchain system 1 In the distributed ledger 15, the server unit 12 then obtains the thirteenth transaction matching result from the distributed ledger 15 of the blockchain system 1 through the smart contract 121 in the blockchain system 1. The power transmission content of the content to be rescued and sold in, and based on the power transmission content, an actual rescue and sales content corresponding to the content to be rescued and sold in the thirteenth transaction matching result is generated, and written into the decentralization of the blockchain system 1 In the account book 15, the actual rescue sales content is announced on the trading platform 111. Thereby, the rescuer who provides power rescue can determine through verification by the server unit 12 whether the power indicated by the rescue sales content is indeed provided. It is worth mentioning that when the location of the electric vehicle 3 in the purchase content for seeking help announced on the trading platform 111 is only the location area where the electric vehicle 3 held by the rescuer is located, the server unit 12 will match the location of the electric vehicle 3. When the rescue purchase content is matched, the GPS coordinates of the electric vehicle 3 held by the rescuer will also be transmitted to the rescuer's rescue terminal 53 corresponding to the successfully matched rescue sales content.

In summary, the blockchain system 1 for electric energy transactions of the present invention stores the charging demand in the distributed ledger 15 of the blockchain system 1 through the server unit 12, and uses the server unit 12 to Unit 12 writes all transaction matching results into the distributed ledger 15 of the blockchain system 1 to ensure that each electric energy transaction is safe, transparent, anonymous and non-tamperable. In addition, it can also be used by buyers and sellers. The electric energy information sensed by the electric energy measuring device 14 or the charging pile 13 is used to verify the actual electric energy purchase and sale transaction content, and then check the transaction status of the electric energy transaction, so the purpose of the present invention can indeed be achieved.

However, the above are only examples of the present invention. They cannot be used to limit the scope of the present invention. All simple equivalent changes and modifications made based on the patent scope of the present invention and the contents of the patent specification are still within the scope of the present invention. within the scope covered by the patent of this invention.

1: Blockchain system 11:Trading server 111:Trading platform 12:Server unit 121:Smart Contract 13:Charging pile 14: Electric energy measuring device 15: Distributed ledger 16:Power transmission device 2:Building 21: Electric vehicle charging station 211:Solar module 212: Electric energy storage device 22:Load 3: Electric car 41:Charging terminal 42: Discharge terminal 43:Green battery charging terminal 44: Green electricity discharge terminal 45: Operation end 46: Green electricity purchase end 47: Green e-commerce sales terminal 48:Buying side 49:Sales side 51:Power saving terminal 52: Rescue terminal 53:Rescue end 100:Communication network

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a block diagram of an embodiment of the blockchain system for electric energy trading according to the present invention; and Figure 2 is a schematic diagram illustrating a building equipped with multiple loads, an electric vehicle charging station and multiple power measurement devices.

1: Blockchain system

11:Trading server

111:Trading platform

12:Server unit

121:Smart Contract

13:Charging pile

14: Electric energy measuring device

15: Distributed ledger

16:Power transmission device

41:Charging terminal

42: Discharge terminal

43:Green battery charging terminal

44: Green electricity discharge terminal

45: Operation end

46: Green electricity purchase end

47: Green e-commerce sales terminal

48:Buying side

49:Sales side

51:Power saving terminal

52: Rescue terminal

53:Rescue end

100:Communication network

Claims (17)

A blockchain system for electric energy trading, suitable for a building equipped with an electric vehicle charging station. The electric vehicle charging station can charge and discharge multiple parked electric vehicles. The blockchain system is connected through a communication network A charging terminal held by a charging demander, and a discharging terminal held by a discharging demander. The blockchain system is also connected to a charging terminal held by the operator of the electric vehicle charging station through the communication network. There is an operating end and a battery end. The charging end is used to generate a charging demand related to an electric vehicle to be charged held by the charging demander. The discharging end is used to generate a charging demand related to the discharge demander. The electricity sales demand of an electric vehicle held to be discharged is used to generate a power saving demand related to demand response. The power saving end is used to generate a power saving compensation demand. The blockchain system includes: 1 A transaction server is connected to the charging terminal and the discharging terminal through the communication network, and is used to run a trading platform that announces multiple pending purchases related to electric energy; a plurality of electric energy measuring devices are installed on In this building, each electrical energy measuring device serves as a blockchain node of the blockchain system. Each electrical energy measuring device is used to continuously sense and write corresponding electrical energy information to the distributed system of the blockchain system. in the ledger; and a server unit, connected to the transaction server and the power measuring devices via the communication network, when the server unit receives from the transaction platform information generated by the charging terminal including information related to the When one of the electric vehicles to be charged needs to be charged, the server unit writes the charging requirement into the blockchain system through the smart contract in the blockchain system. In the distributed ledger, when the server unit receives the electricity sales demand generated by the discharge terminal from the trading platform and contains a content to be sold, the server unit uses the smart contract in the blockchain system to Write the content to be sold into the distributed ledger of the blockchain system, announce the content to be sold on the trading platform as content to be sold, and determine all unmatched transactions announced on the trading platform to be sold. In the purchase content, is there a matching purchase content that matches the content to be sold? When the server unit determines that the matching purchase content exists, the server unit uses the smart contract in the blockchain system to purchase the content according to the desired transaction. The sales content and the paired purchase content generate a first transaction matching result, which is written into the distributed ledger of the blockchain system, and the first transaction matching result is announced on the trading platform. When the server unit automatically When the trading platform receives the power saving request generated by the operating terminal and contains a power saving content, the server unit writes the power saving content into the distributed system of the blockchain system through the smart contract in the blockchain system. In the account book, the power saving content is announced on the trading platform as the power saving content. When the server unit receives from the trading platform, the power saving terminal responds to the power saving content announced on the trading platform. When a power-saving content to be matched is generated and the power-saving compensation demand includes a content to be compensated, the server unit determines the unmatched transaction announced on the trading platform through the smart contract in the blockchain system to be matched. Whether the content to be saved matches the content to be compensated, and as a paired power saving content, when the server unit determines that the paired power saving content matches, the server unit uses the smart contract in the blockchain system according to the The content to be compensated and the paired power saving content generate a twelfth transaction pairing result. The result is written into the distributed ledger of the blockchain system, and the twelfth transaction matching result is announced on the trading platform; wherein the content to be compensated includes a piece of energy-saver identification information corresponding to the energy-saver. , when the electric energy measuring device corresponding to the electric energy saver senses electric energy information, the electric energy measuring device generates and writes another electric energy content corresponding to the electric energy saver identification information based on the electric energy information and the electric energy saver identification information. Into the distributed ledger of the blockchain system, the server unit obtains another power content corresponding to the content to be compensated from the distributed ledger of the blockchain system through the smart contract in the blockchain system , and generate an actual power saving content corresponding to the content to be compensated based on the further power content, and write the actual power saving content into the distributed ledger of the blockchain system, and announce it on the trading platform. The blockchain system for electric energy trading as described in claim 1, wherein the content to be charged includes a charging type, and the charging type is one of a charging-only type and a charge-discharge type, wherein the charging-only type The model only charges when parked, and the charge-discharge model can charge or discharge during parking. The blockchain system for electric energy trading as described in claim 1 is also connected to a green electricity charging terminal held by a green electricity charging demander through the communication network, and the green electricity charging terminal is used to generate a related Regarding the green electricity purchase demand for an electric vehicle to be charged held by the green electricity charging demander, the trading platform also announced multiple green electricity contents related to green electricity to be sold. When the server When the unit receives the green electricity purchase demand generated by the green electricity charging terminal from the trading platform and contains a green electricity purchase content, the server The processor unit writes the content of the green electricity to be purchased into the distributed ledger of the blockchain system through the smart contract in the blockchain system, and determines all the unmatched green electricity to be sold that are announced on the trading platform. In the content, is there a matched selling green electricity content that matches the green electricity content to be purchased? When the server unit determines that the matched selling green electricity content exists, the server unit passes the transaction in the blockchain system The smart contract generates a second transaction matching result based on the green electricity content to be purchased and the green electricity content for sale, writes it into the distributed ledger of the blockchain system, and announces the second transaction matching result on the trading platform. The blockchain system for electric energy trading as described in claim 3 also connects a green electricity discharge terminal held by a green electricity discharge demander through the communication network, and the green electricity discharge terminal is used to generate a related Regarding the green electricity sales demand for an electric vehicle to be discharged held by the green electricity discharge demander, the trading platform also announced multiple green electricity contents related to green electricity energy to be purchased. When the server unit When the trading platform receives the green electricity sales demand generated by the green electricity discharge terminal and contains a green electricity content to be sold, the server unit uses the smart contract in the blockchain system to transfer the green electricity to be sold. The content is written into the distributed ledger of the blockchain system, and the green electricity content to be sold is announced on the trading platform as the green electricity content to be sold, and all pending unmatched transactions announced on the trading platform are determined. In purchasing green electricity content, is there a matching transaction that matches the green electricity content to be sold? When the server unit determines that there is such a matching pair to purchase green electricity content, the server unit purchases green electricity content through the blockchain The smart contract in the system generates a third transaction based on the green electricity content to be sold and the green electricity content to be purchased. The matching results are easily written into the distributed ledger of the blockchain system, and the third transaction matching results are announced on the trading platform. The blockchain system for electric energy trading as described in claim 4 is also connected to an operating terminal held by the operator of the electric vehicle charging station through the communication network, and the operating terminal is used to generate an electricity purchase Demand, wherein when the server unit receives the electricity purchase demand generated by the operator from the trading platform and contains a desired purchase content, the server unit converts the desired purchase content through the smart contract in the blockchain system. The purchase content is written into the distributed ledger of the blockchain system, and the content to be purchased is announced on the trading platform as content to be purchased, and the determination is announced on all content to be sold that does not match the transaction on the trading platform. , whether there is a matching sales content that matches the content to be purchased. When the server unit determines that the matching sales content exists, the server unit uses the smart contract in the blockchain system according to the content to be purchased. The matched selling content generates a fourth transaction matching result, which is written into the distributed ledger of the blockchain system, and the fourth transaction matching result is announced on the trading platform. The blockchain system for electric energy trading as described in claim 5 also includes a plurality of electric vehicles installed at the electric vehicle charging station and connected to the server unit via the communication network that can control the parked electric vehicles. Charging piles for charging and discharging. Each charging pile serves as a blockchain node of the blockchain system. Each charging pile is used to continuously sense and write corresponding charging and discharging information to the blockchain system. In the account book, the matched sales content includes a discharge demander identification information corresponding to the discharge demander. When one of the charging piles senses the electric vehicle to be discharged from the discharge demander and When the discharge information includes the identification information of the discharge demander, the charging pile writes the discharge information into the distributed ledger of the blockchain system, and the server unit obtains the discharge information from the area through the smart contract in the blockchain system. The distributed ledger of the blockchain system obtains the discharge information corresponding to the paired sales content, and generates an actual transaction content corresponding to the paired sales content based on the discharge information, and writes it into the distributed ledger of the blockchain system. , and announce the actual transaction content on the trading platform. The blockchain system for electric energy trading as described in claim 5 also includes a plurality of electric energy meters installed in the building and a seller's electric energy generation place and connected to the server unit through the communication network. device, each electric energy measuring device serves as a blockchain node of the blockchain system, and each electric energy measuring device is used to continuously sense and write corresponding electric energy information to the distributed account of the blockchain system. Here, the paired sales content includes a seller identification information corresponding to the seller. When the electric energy measuring device corresponding to the seller senses the electric energy information, the electric energy measuring device uses the electric energy information and the The vendor identification information generates a power content corresponding to the vendor identification information and writes it into the distributed ledger of the blockchain system. The server unit obtains the information from the blockchain through the smart contract in the blockchain system. The distributed ledger of the system obtains the electric energy content corresponding to the paired sales content, and generates an actual sales content corresponding to the paired sales content based on the electric energy content, and writes it into the distributed ledger of the blockchain system, And announce the actual sales content on the trading platform. The content to be purchased includes an operator identification information corresponding to the operator. When the power energy measuring device installed in the building and corresponding to the operator senses When obtaining electrical energy information, the electrical energy measured in the Based on the electric energy information and the operator identification information, another electric energy content corresponding to the operator identification information is generated and written into the distributed ledger of the blockchain system. The server unit uses the blockchain system to The smart contract obtains another electric energy content corresponding to the content to be purchased from the distributed ledger of the blockchain system, and generates an actual purchase content corresponding to the content to be purchased based on the other electric energy content, and writes it into the In the distributed ledger of the blockchain system, the actual purchase content is announced on the trading platform. As for the blockchain system for electric energy trading described in claim 5, the operating terminal is also used to generate a support request related to electric energy, wherein when the server unit receives the request from the operating terminal from the trading platform When the support request is generated, the server unit writes the support request into the distributed ledger of the blockchain system through the smart contract in the blockchain system, and records the support request. The request is announced on the trading platform, and the discharge terminal generates the electricity sales demand in response to the support request posted on the trading platform. The blockchain system for electric energy trading as described in claim 5, wherein the operating terminal is also used to generate another demand for selling electricity. When the server unit receives the data generated by the operating terminal from the trading platform, When another electricity sales demand includes another content to be sold, the server unit writes the other content to be sold into the distributed ledger of the blockchain system through the smart contract in the blockchain system. And announce the other content to be sold on the trading platform as the content to be sold, and determine whether there is another content to be sold that matches the other content to be sold among all the unmatched content to be purchased posted on the trading platform. matching purchase content, when the server unit determines that the When another pairing purchases content, the server unit generates a fifth transaction matching result based on the other content to be sold and the other pairing purchasing content through the smart contract in the blockchain system, and writes it into the blockchain In the distributed ledger of the system, the fifth transaction matching result is announced on the trading platform. As in the blockchain system for electric energy trading described in claim 9, the operating terminal is also used to generate another green power purchase demand, wherein when the server unit receives the request from the operating terminal from the trading platform When another green electricity purchase demand that includes another green electricity purchase content is generated, the server unit writes the other green electricity purchase content into the blockchain system through the smart contract in the blockchain system. In the distributed ledger, the other green electricity content to be purchased is announced on the trading platform as the green electricity content to be purchased, and the determination is announced in all the unmatched green electricity content to be sold on the trading platform, Whether there is another matching sale of green electricity content that matches the other green electricity content to be purchased, when the server unit determines that there is another matching sale of green electricity content, the server unit uses the blockchain system The smart contract in the system generates a sixth transaction matching result based on the green electricity content that the other person wants to purchase and the green electricity content that is sold by the other pair, and writes it into the distributed ledger of the blockchain system, and the sixth transaction matching result is written into the distributed ledger of the blockchain system. The trading matching results are announced on the trading platform. As in the blockchain system for electric energy trading described in claim 10, the operating terminal is also used to generate another green electricity sales demand, wherein when the server unit receives from the trading platform generated by the operating terminal When there is another green electricity sales demand that includes another green electricity content that wants to be sold, the server unit writes the other green electricity content that wants to be sold into the blockchain system through the smart contract in the blockchain system. in the decentralized ledger and put the other person who wants to sell green electricity The content is announced on the trading platform as green electricity content to be sold, and it is determined whether among all the green electricity contents to be purchased that are not matched and traded on the trading platform, there is another green electricity content that matches the other green electricity content to be sold. Matching purchase of green electricity content, when the server unit determines that there is another pair to purchase green electricity content, the server unit communicates with the other party through the smart contract in the blockchain system based on the green electricity content that the other party wants to sell. A paired purchase of green electricity content generates a seventh transaction matching result, which is written into the distributed ledger of the blockchain system, and the seventh transaction matching result is announced on the trading platform. As in the blockchain system for electric energy trading described in claim 11, the electric vehicle charging station is also equipped with an electric energy storage device corresponding to one energy storage information and a solar module for power generation. The building is equipped with multiple Load, in which the server unit purchases at least one unit of electric power based on the maximum power of a transformer of the electric vehicle charging station and the energy storage information corresponding to the electric energy storage device through the smart contract in the blockchain system. The purchase price, at least one winning bid price participating in the demand auction, a payment price that the electric vehicle charging station needs to pay to the electric vehicle to be charged for the unit of electric power when the electric vehicle to be charged is discharged, the electric vehicle charging station A penalty price for the electric vehicle to be charged when the electric vehicle to be charged is not fully charged for the unit of electric power, a degradation cost for charging or discharging the unit of electric power for the electric energy storage device, a total load electric power for the loads, and the solar energy A solar power generated by the module, the income of the electric vehicle charging station from participating in auxiliary services, and the charging demand stored in the distributed ledger of the blockchain system, the first transaction matching result, the second transaction matching result, and the third transaction matching result. Three trading matching results, fourth The transaction matching result, the fifth transaction matching result, the sixth transaction matching result, and the seventh transaction matching result obtain a charging and discharging schedule for each parked electric vehicle and the electric energy storage device. The blockchain system for electric energy trading as described in claim 1 is also connected to a green electricity purchasing terminal through the communication network. The green electricity purchasing terminal is used to generate another green electricity purchasing demand, wherein the trading platform It is also announced that there are multiple green electricity contents to be sold related to green electricity. When the server unit receives from the trading platform, the green electricity purchasing terminal contains another green electricity purchase content that is intended to be purchased. When electricity is needed, the server unit writes the content of the green electricity to be purchased into the distributed ledger of the blockchain system through the smart contract in the blockchain system, and records the green electricity to be purchased. The content is announced on the trading platform as the green electricity content to be purchased, and it is determined whether there is another green electricity content that matches the green electricity content to be purchased among all the green electricity contents to be sold that are not matched and transacted and announced on the trading platform. Matching sales of green electricity content, when the server unit determines that there is another matching sale of green electricity content, the server unit communicates with the other green electricity content to be purchased through the smart contract in the blockchain system. A paired sale of green electricity content generates an eighth transaction matching result, which is written into the distributed ledger of the blockchain system, and the eighth transaction matching result is announced on the trading platform. The blockchain system for electric energy trading as described in claim 13 is also connected to a green electricity sales terminal through the communication network, and the green electricity sales terminal is used to generate another green electricity sales demand, wherein the trading platform also The announcement contains multiple items of green electricity to be purchased related to green electricity. When the server unit receives from the trading platform a message generated by the green electricity sales terminal that contains another green electricity to be sold. When there is a need for selling green electricity content, the server unit writes the green electricity content to be sold into the distributed ledger of the blockchain system through the smart contract in the blockchain system, and writes it into the distributed ledger of the blockchain system. This further green electricity content to be sold is announced on the trading platform as green electricity content to be sold, and it is determined whether there is another green electricity content to be purchased that is announced on the trading platform and has not been matched with the transaction. The sale of green electricity content matches the transaction of purchasing green electricity content. When the server unit determines that there is another pair to purchase green electricity content, the server unit uses the smart contract in the blockchain system to purchase green electricity content according to the further desire. The sale of green electricity content and the further matched purchase of green electricity content generate a ninth transaction matching result, which is written into the distributed ledger of the blockchain system, and the ninth transaction matching result is announced on the trading platform. The blockchain system for electric energy trading as described in claim 1 is also connected to a sales terminal through the communication network, and the sales terminal is used to generate another demand for electricity sales, wherein when the server unit receives data from the trading platform When receiving another demand for selling electricity generated by the sales terminal and containing another content to be sold, the server unit writes the further content to be sold into the block through the smart contract in the blockchain system. In the distributed ledger of the chain system, the additional content to be sold is announced on the trading platform as the content to be sold, and it is determined whether there is another content to be purchased among all the unmatched transaction content announced on the trading platform. When the server unit determines that there is a matching purchase content that matches the another content to be sold, the server unit will use the smart contract in the blockchain system to execute the transaction based on the matching purchase content. The content and the further paired purchase content generate a tenth transaction matching result, which is written into the distributed ledger of the blockchain system, and the third transaction matching result is The results of the ten trading matches are announced on the trading platform. The blockchain system for electric energy trading as described in claim 1 is also connected to a purchasing terminal through the communication network, and the purchasing terminal is used to generate another electricity purchasing demand, wherein, when the server unit receives data from the trading platform When receiving another electricity purchase demand generated by the purchaser and containing another content to be purchased, the server unit writes the other content to be purchased into the blockchain through the smart contract in the blockchain system. In the distributed ledger of the system, the other content to be purchased is announced on the trading platform as the content to be purchased, and it is determined whether there is another content to be sold among the unmatched content announced on the trading platform. The other content to be purchased matches the transaction of the paired sales content. When the server unit determines that the other paired sales content exists, the server unit uses the smart contract in the blockchain system to calculate the transaction price based on the other content to be purchased. An eleventh transaction matching result is generated with the other paired sales content, and is written into the distributed ledger of the blockchain system, and the eleventh transaction matching result is announced on the trading platform. The blockchain system for electric energy trading as described in claim 1 is also connected to a rescue terminal and a rescue terminal through the communication network. The rescue terminal is used to generate a rescue demand related to electric energy. The rescue terminal is used to Generate a rescue demand related to electric energy. When the server unit receives the rescue demand generated by the rescue client from the trading platform and contains a rescue purchase content, the server unit uses the blockchain system to The smart contract in the system writes the requested purchase content into the distributed ledger of the blockchain system, and announces the requested rescue purchase content on the trading platform as the requested rescue purchase content. When the server unit starts from the The trading platform receives the response from the rescue client. When there is a matching purchase content to be rescued among the purchase content to be rescued that is announced on the trading platform, and the rescue demand containing a sales content to be rescued is generated, the server unit uses the wisdom in the blockchain system The contract determines whether the unmatched purchase content to be matched that is announced on the trading platform matches the sales content to be rescued. As a matched purchase content to be rescued, when the server unit determines that the matched purchase content is matched. When purchasing content, the server unit generates a thirteenth transaction matching result based on the rescue sales content and the matched rescue purchase content through the smart contract in the blockchain system, and writes it into the decentralized system of the blockchain system. The results of the thirteenth transaction matching will be announced on the trading platform.

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