Research on power smoothing control strategy for wind-solar-storage plants based on dynamic exponentially weighted filtering algorithm
WU Xuechong1, LI Renshi2, WEI Qing1, DONG Lianxin1, LIN Zhongwei2
1. Huadian Electric Power Research Institute Co., Ltd, Hangzhou 310030; 2. School of Control and Computer Engineering, North China Electric Power University, Beijing 102206
Abstract:As the proportion of new energy sources in the power grid continues to increase, the fluctuating nature of wind and solar resources significantly impacts the safety and stability of the grid. To address this issue, this paper proposes a proportional-integral (PI) closed-loop adaptive exponentially weighted moving average filtering algorithm based on the power fluctuation rate at the grid connection points of renewable energy plants, utilizing the rapid response and stabilization characteristics of energy storage systems. First, this paper summarizes the existing power smoothing methods for renewable energy plants and highlights their limitations. Then, a simplified mathematical model of the grid-connected power of wind-solar-storage plants is established, and a PI closed-loop adaptive exponentially weighted moving average filtering algorithm is proposed, detailing its implementation in renewable energy plants. Finally, a simulation model for the wind-solar-storage plant is constructed using Matlab/Simulink to verify the effectiveness of the proposed control algorithm.
吴学崇, 黎仁仕, 魏卿, 董联鑫, 林忠伟. 基于动态指数加权滤波算法的风光储场站功率平滑控制策略研究[J]. 电气技术, 2026, 27(7): 1-8.
WU Xuechong, LI Renshi, WEI Qing, DONG Lianxin, LIN Zhongwei. Research on power smoothing control strategy for wind-solar-storage plants based on dynamic exponentially weighted filtering algorithm. Electrical Engineering, 2026, 27(7): 1-8.