Optimal Strategy of Multi-microgrid System Stackelberg Game Operation Considering Photovoltaic Consumption and Integrated Demand Response

To effectively improve the interests of all subjects in the multi-microgrid integrated energy system and promote photovoltaic consumption, a Stackelberg game operation optimization strategy of multi-microgrid system considering photovoltaic consumption and comprehensive demand response is proposed. Firstly, the framework of multi-microgrid system is constructed, the power interaction model between microgrids is established, and the comprehensive demand response model of users is established. Then, a one-leader multi-follower interaction equilibrium model is formed with the setting where multi-microgrid system as the leader and the multi-microgrid users as the followers and a unique equilibrium solution for the Stackelberg game is proved to exist. The upper level iteratively optimizes the energy selling prices, the output of equipment, the power interaction between microgrids and announces the energy selling prices to the lower level. The lower level optimizes the energy load and returns the actual load demand to the upper level. Finally, through the analysis of examples, it is verified that the proposed model can formulate a reasonable energy selling prices, take into account the interests of both players in the Stackelberg game, and effectively promote photovoltaic consumption.