Optimal Capacity Allocation for Wind-Solar Station Considering Power Response of Pumped Storage

Large-scale renewable energy access with randomness and volatility poses severe challenges to power grid security dispatch. In order to reduce the adverse impact of wind power and solar power on the grid, the fluctuation of wind power and solar power should be considered in the construction of wind-photovoltaic power plants. Therefore, considering the regulation ability of pumped storage units to suppress wind and solar fluctuations quickly, the power response model of pumped storage units under the conditions of pumping and hydroelectric power generation is established in this paper. Aiming at the economy and the proportion of wind energy and solar energy absorption, an optimal allocation method of wind energy and solar power capacity considering the power response of pumped storage units is proposed. Under the condition of positive and negative peak regulation of wind power output, the simulation results show that the optimal installed capacity allocation scheme of wind power and solar power plants is obtained. The simulation results verify the feasibility and effectiveness of this method.