Research On Decentralized Power Transaction Based On Smart Contract In V2G

With the increasing maturity of distributed power technology,increasing penetration rate and increasing number of electric vehicles,there are a large number of independent decision-making electric vehicle users participating in the power market competition in the smart grid.In the V2G network,the electric vehicle is used as a distributed energy storage component,which is charged when the power is low,and is fed back to the power grid during the peak of power consumption,so that it can play the role of "shaving the peak and filling the valley".How to design an effective V2G power trading mechanism and realize the effective allocation of energy resources is one of the key issues in smart grid research.We construct a decentralized power trading mechanism and model for electric vehicle electric power trading,and design trading rules based on reverse auction and combined auction.In view of the V2G electric vehicle power trading problem,we construct a decentralized power trading mechanism and model.Based on the reverse auction and combined auction rules,the V2G electric vehicle trading intelligent contract is designed and the smart contract is deployed to the Ethereum private chain.The actual running V2G power trading platform was built to realize the point-to-point energy trading of electric vehicles in the V2G network.The specific work of this paper is as follows:1.Decentralized power trading model in V2G is studied.We consider the randomness and uncertainty of electric vehicle charging and discharging,and designs the V2G decentralized network architecture.Based on blockchain technology and Ethereum smart contract technology,V2G electric vehicle trading intelligent contract and electric vehicle trading process were designed.The V2G power trading scheme based on reverse auction is studied.Based on the decentralized electric vehicle power trading model and reverse auction rules in V2G,this paper establishes a trading model of electric vehicles based on reverse auction.Based on the research of reverse auction transaction process and pricing strategy,a reverse auction algorithm based on dynamic pricing is proposed.According to the V2G electric vehicle trading intelligent contract,the electric vehicle electric trading intelligent contract based on reverse auction rules was designed,and a practical trading platform was set up.The feasibility and efficiency of the proposed scheme are verified by simulation experiments.3.The V2G power trading scheme based on combined auction is studied.Based on the reverse auction-based V2G power trading scheme,we established a model of electric vehicle electric power trading based on combined auction for the problem of charging service fee,and proposed an electric vehicle electric power trading scheme based on combined auction.In order to verify the feasibility and effectiveness of the proposed scheme,based on the Ethereum smart contract,the electric vehicle electric trading intelligent contract based on the combined auction rules was designed and experimented on the Ethereum private chain.