Research on Energy Optimization Method of Multi-microgrid System Based on the Cooperative Game Theory

Aiming at the energy optimization problem of multi-microgrid system, a energy optimization method of multi-microgrid system is proposed based on cooperative game theory in this paper. Firstly, taking economic cost as the objective function, a cooperative game model of multi-microgrid system is established based on the cooperative game theory. Secondly, taking the electricity price and power trading volume between micro grids as strategies and the final operation cost or revenue of each micro grid as the benefit function of the game to conduct the cooperative game under the price constraint agreement and benefit compromise agreement. The electricity price and trading power between micro grids are obtained to achieve optimization of multi-level microgrids. Finally, the optimization method is simulated to prove the feasibility. The simulation results show that the method can effectively achieve the energy optimal scheduling of multi-microgrid system.