Research on Energy-Storage Capacity Optimal Configuration Based on Scenario Analysis and Seven-spot Ladybird Optimization

One of pivotal question in wind/photovoltaic/energy storage system is the optimal configuration of energy-storage capacity. Regarding this question, a method for configuring the power and capacity of a single energy storage medium is proposed in grid-connected system of renewable energy. Firstly, the models of wind power, photovoltaics and storage are built, respectively. And then it establishes the objective function of energy-storage capacity's optimal configuration to minimize the sum of the initial investment cost and operating cost of energy storage, and resolves it based on scenario analysis and seven-spot ladybird optimization (SLO). Finally, a large number of cases are analyzed based on combined power generation system of wind/photovoltaics /battery storage hybrid power system and the effectiveness of the energy storage configuration strategy and high efficiency of algorithm are demonstrated through results of simulation.