Shared Energy Storage Operation Mechanism Based on Cooperative Game Theory and CPS Hierarchical Architecture

With the high proportion of renewable energy sources such as wind and solar generation to the power grid, the safe and stable operation of the power grid is facing challenges. Energy storage is widely used due to its flexible regulation ability, but at present, a large number of distributed energy storage installation locations are scattered, the ownership subjects are different, the information connection is not smooth, it is difficult to unified regulation, and the utilization rate is low. Firstly, this paper designs a cyber-physical system (CPS) framework suitable for distributed energy storage, combines detection technology and communication technology to realize the interaction of digital information and physical information, which realizes accurate control of energy storage. Secondly, a distributed shared energy storage operation mechanism based on cooperative game theory is designed, and users with different source-load characteristics can share capacity, power mutual interact and benefit allocation based on cooperative game theory. Finally, a distributed algorithm suitable for energy storage sharing operation mechanism is developed to ensure user privacy. Through the example test, it is shown that distributed shared energy storage can improve system operation economy and the utilization rate of new energy power generation and save about 35.27% of the cost.