A Multi-Subject Two-Level Game Strategy Based on Incremental Distribution Network in China

After introducing the demand response strategy, a game strategy of multiple subjects is proposed in this article. Firstly, based on the Stackelberg theory, the game model including three subjects, the utility company, the ordinary sales company and the load aggregator, was built. A piece-wise utility function of the aggregator based on the demand response characteristics was also proposed. Then, a two-level game system was established, which not only the game between the sales side and the user side, but also the internal game mechanism of the sales side is established. Finally, a dynamic objective particle swarm optimization algorithm based the backward recursive theory was put forward to solve the model. The result showed that after introducing competition into the sales side, the electric price has obviously decreased, and the game between sales companies made the electric price come to steady faster. The two-level game model decreased the load difference between peak and valley and optimized the load curve.