Virtual Power Plant Energy Sharing Mechanism Based on Stackelberg Game

Integrating the sharing economy with the power industry can positively promote the power market development and the power pattern evolution. With the opening up of the power market and the continuous promotion of new technologies, the distributed resources have been developing rapidly, the customer roles are changing, the supply and the demand interact more frequently, and the new market body, represented by the virtual power plants, has got a stronger ability to adapt in the new situation. This paper constructs the virtual power plant main body primarily with the prosumer and cloud energy storage. Meanwhile, based on the stackelberg game, the energy sharing operation mechanism is designed to analyze the supply-demand interaction. Then a non-cooperative game model is established with the virtual power plant operator as the leader and the prosumer as the follower. In the framework of this model, the upper-level leaders aim to maximize the profits, while the lower-level followers pursue the balance between the utility and the cost. A distributed algorithm is used to find the optimal solution that reaches equilibrium. Finally, the dynamic game relationship between the parties is analyzed according to the results, which provides a reference for the operation of virtual power plants and the integration of energy sharing economy with power system. © 2020, Power System Technology Press. All right reserved.