Research On Energy Trading Method Among Multi-Microgrid Considering Trading Incentive And Credit Management

Energy trading among multi-microgrid in the region can improve the utilization rate of renewable energy and improve the operating efficiency of microgrids,reducing the operating pressure of the main grid.However,in the current market trading environment,there is a lack of reasonable trading incentives to encourage microgrids to join the multi-microgrid energy trading market.At the same time,the lack of trust caused by the involvement of thirdparty trading platforms and transaction defaults has further reduced the willingness of microgrids to trade.Especially if there is a large-scale transaction default,the safe and stable operation of the grid may be jeopardized.Therefore,how to encourage microgrids to actively participate in energy trading among multi-microgrid and avoid the negative impact of the lack of trust,and maintain the stability of the multi-microgrid energy trading market is a challenging problem.This paper studies the energy trading problem among multi-microgrid considering trading incentives and credit management.The specific work is as follows:(1)This paper takes the regional multi-microgrids as the research object,designs a multi-microgrid energy trading architecture based on energy blockchain,and innovatively realizes distributed transactions among microgrids to avoid transaction trust and security that may be caused by third-party trading platforms.(2)In view of the load changes caused by demand response may have an impact on the comfort of internal users,a related user load comfort model is designed,and the multi-objective particle swarm algorithm is used to realize the internal optimal scheduling of the microgrid before the trading,which improves user comfort while rationally arranging scheduling plans.(3)A two-stage auction model based on smart contracts is designed in the energy trading link among multi-microgrid,and the energy demand of buyer microgrids’ is partitioned to improve transaction flexibility;The concept of transaction credit values and prepaid margin is introduced to manage transaction defaults,providing new ideas for solving the problem of lack of trust;In view of the lack of transaction enthusiasm of the current microgrid,the priority factor is set and the improved water filling algorithm is used to realize the fair distribution of energy and realize the incentive for the microgrid to actively participate in the multi-microgrid energy market.The simulation shows that: compared with the direct transaction with the main grid,the method proposed in this paper can effectively reduce the operating cost of the microgrid and increase the transaction revenue;The introduction of credit management can punish and restrict transaction defaults,and can effectively avoid the problem of lack of trust;The priority factor designed according to the active degree of the microgrid participating in the multimicrogrid energy trading market has a positive impact on the energy distribution and can play a good role in trading incentives.The trading method proposed in this paper has applicability to different types of microgrid individuals and can provide a certain reference for the setting of the energy trading market mechanism.The simulation results of the example show the feasibility of the research method in this paper.