Engineering Research Center of Education Ministry for Renewable Energy Power Generation and Grid-connection (Xinjiang University), Urumqi 830017, China

Aiming at the problem of safe and economic operation of distribution networks with multi-type microgrids, a mixed game model is constructed with the objective of minimizing the cost of each agent. First, the clustering method is used to reduce the scenarios, and the master-slave game model is constructed considering the integrated demand response of multi-type loads. As the leader, the distribution network formulates the price for trading with the microgrid with the objective of minimizing the operation cost. As the follower, the multi-type microgrids form a cooperative alliance to formulate the price for trading between microgrids and the benefit distribution mechanism under the optimized price. By the coupling decision-making function of the optimized transaction price and the microgrid electricity purchase and sale plan, a win-win situation for different stakeholders is realized. Secondly, considering the influence of interactive power on the safe operation of distribution networks, a coordinated optimization method considering the power flow of distribution networks is proposed. According to the characteristics of the model, the adaptive state transition algorithm (ASTA) is used to solve the master model, and the Cplex solver is used to solve the slave model, while the master-slave model interacts to obtain the equilibrium strategy of the mixed game model. Finally, the simulation results verify the effectiveness and rationality of the proposed method.