Research On Mechanism Design Of Electric Energy Spot Market Based On Blockchain Technology

China is in the process of a new round of power system reform.The construction of the electric power spot market is in the pilot and exploration stage.The traditional centralized electric power spot institutions have problems such as cannot fully play the leading role of the market,constraints of reporting against the cost characteristics of enterprises,and insufficient transparency and efficiency of information disclosure.Blockchain technology has important advantages in promoting data sharing,optimizing business processes,reducing operating costs,improving collaboration efficiency,and building a trusted system.It can help create a convenient,efficient,fair,stable and transparent market environment.Based on these,a weakly centralized electricity energy spot market mechanism based on blockchain technology is designed to explore the promotion and application of blockchain in the field of energy and electricity,and to make up for the deficiencies of traditional centralized electricity spot institutions.Based on the practical applications of blockchain technology in the microgrid,this article analyzes the development status and characteristics of the domestic and foreign power spot market,and establishes a conceptual model of the electricity spot market mechanism based on blockchain technology,and designs a price mechanism with the most transactions and the least remainders.The model includes two phases of unilateral bidding and bilateral bidding,three parts are day-ahead market,intra-day market and realtime equilibrium market.Based on the real market’s bilateral bidding declaration data,this article carries out simulations of market transactions between different market stages and between different price mechanisms.This study draws three conclusions.(1)The electric energy spot market under blockchain technology can make up for some of the shortcomings of traditional centralized trading markets;(2)The bilateral auction-type electric energy spot market based on blockchain technology contains more market information,more scientific pricing mechanism,and unchanged or lower transaction electricity prices than the unilateral auction-type electricity spot market;(3)The price mechanism with the most transactions and the least remainders can maximize social welfare,and it is more effective than the SMP price mechanism in reducing transaction surplus and reflecting the continuity of prices.