Optimal Scheduling Method for PV-Energy Storage-Charging Integrated System Considering Multiple Operating Scenarios

In order to effectively improve the security of the PV-energy storage-charging integrated system and solve the problem of poor utilization rate. Firstly, this paper analyzes the characteristics of photovoltaic power generation and the operation characteristics of energy storage and electric vehicles. Secondly, the power balance constraint between the system and the superior power grid and the operating cost of power purchasing and selling are considered. Then, with the goal of maximum economic benefit and minimum exchange power between the system and the superior power grid, the multi-target problem is converted into a single target problem. Finally, an optimal scheduling model of PV-energy storage-charging integrated system considering the flexibility of electric vehicles is established. The economics and safety of three scenarios are analyzed, including the operation scenario without electric vehicle participation, the day-ahead scheduling operation scenario with electric vehicle participation and the intra-day optimal scheduling operation scenario with electric vehicle participation, and MSBOA is used to solve these three scenarios respectively. Simulation results show that the proposed method can further reduce the fluctuation of grid-connected power between the system and the superior power grid, make full use of the flexibility of electric vehicles, and deeply optimize the output of PV-energy storage-charging integrated systems, so as to maximize the comprehensive benefits of system operation.