Research on electric vehicle mutual selling mechanism based on block chain system

Abstract

Aiming at the characteristic that electric vehicles can be used as a distributed power source, we study the mutual sales mechanism of electric vehicles to realize the sales of electricity based on blockchain technology with the participation of electric power companies as the weak center. Although electric vehicles can be used as a power source to charge other electric vehicles, market realization is rarely considered. Firstly, transaction willingness is achieved among electric vehicles through a multilateral game of electric vehicle charging and discharging electricity prices. Then, the transaction content containing the charge and discharge contract power and electricity price information is spread to the entire network through the P2P network in the form of smart contracts with a consensus. In the process, power companies manage the security of transactions. Safety management includes safety check work and congestion management work. The distributed algorithms can be used by the security check in every node of the network without a central organization. However, in the absence of a centralized organization, congestion management is difficult for each node to carry out spontaneously. Therefore, power companies are required to perform weakly centralized congestion management on transactions. In the weakly centralized mode, the power company only needs to know the information about the line violation without the specific transaction information. The privacy of users is better protected. Finally, when the transaction clearing time arrives, the smart contract will automatically complete the transfer of funds based on the user's actual electricity consumption data and prior agreement. Through the research in this paper, direct power transactions between electric vehicle owners can be effectively guaranteed and realized under the condition of weak centralization of electric power companies.