Research On Microgrid Power Market Transactions Combined With Blockchain Technolog

Microgrid technology can effectively solve the large-scale grid connection of distributed power supply and reduce the impact on the power grid operation.It has gradually become a key energy technology.However,the regulation capacity of traditional independent microgrid is limited,which cannot realize the rational application of energy.With the emergence of peer-to-peer(P2P)power transaction mode,P2 P power transaction between multiple micro networks has become an important power transaction mode in smart grid.P2 P power transaction between multiple microgrids has significant advantages in realizing energy complementary utilization between microgrids,reducing system operating costs,and reducing power interaction with the grid.However,the participation of multi-micro grid in power market trading is faced with the problems of multi-agent competition game,transaction settlement and so on.How to construct a reasonable multi-micro grid electricity trading strategy and design a reliable transaction settlement platform have become the research focus of multi-micro grid electricity market trading.Therefore,based on Nash negotiation theory and block chain technology,this paper studies P2 P power transaction strategy and transaction settlement between multiple micro networks respectively.The research contents of this paper are as follows:(1)Aiming at the P2 P power transaction strategy of multi-micro networks,an asymmetric Nash negotiation P2 P power transaction strategy of multi-micro networks considering the uncertainty of source and charge is proposed.An asymmetric bargaining method with the energy contribution as the evaluation index of bargaining power is adopted to ensure the fair distribution of cooperation benefits.Considering the uncertainty of new energy unit output and multi-load demand,the reliability of P2 P power transaction in the uncertain environment is improved.(2)Compared with the strategy proposed in(1)above,another asymmetric Nash negotiation MULTI-micro network P2 P power transaction strategy is proposed one after another.An asymmetric bargaining method is adopted to evaluate the bargaining power by the ratio of marginal contribution rate to carbon transaction cost to ensure the fair distribution of cooperation benefits.At the same time,a cogeneration microgrid containing power to gas(P2G)technology and carboncapture system(CCS)is constructed.The carbon emission of the microgrid is restricted by the addition of CCS and P2 G as well as the participation of P2 P electricity transaction.(3)Aiming at the transaction settlement problems faced by the participation of multiple micro networks in the electricity market transaction,a MULTI-micro network P2 P electricity transaction settlement framework based on ethereum blockchain platform is constructed.According to the optimal trading strategy obtained in(1)and(2)above,the transaction settlement was carried out on blockchain,the transaction whitelist and user authorization mechanism were designed,the special token for electric energy that followed ERC20 protocol was issued,and the smart contract compilation and deployment were carried out on Remix platform.In this way,the security and reliability of transactions and information traceability can be ensured,and the functions of transaction chain and historical transaction inquiry can be realized,which provides support for multi-micro network P2 P power transaction settlement in this paper.