Energy Storage Operation Analysis of High-proportion Wind Power System Based on Optimization Model

Abstract

Energy storage is a valid way to ensure the actual-time power equilibrium of renewable energy systems. However, owing to the comparatively high cost of accumulation energy, the use of energy storage to equilibrium the system power will add to the system run cost, and the economy and dependability of the power system will be influenced. Therefore, in this paper, a wind-thermal-storage joint optimization model considering load-side demand response and carbon capture integrated cost is established for different wind power installed capacities, and the PSO algorithm and CPLEX solver are selected to solve the model. The power balance change and energy storage configuration of the system are compared and analyzed under the condition that the lowest cost of power generation operation is the goal function, which provides some guidance for energy storage collocation of the wind energy system and reliable power supply of the system. The results of the instance show that the improvement model introduced in this paper can validly solve the power balance issue of the high ratio wind power system with energy storage, and ensure the safe and reliable functioning of the power system while reducing the power generation cost of the system.