Study on Energy Storage System Participating in Frequency Regulation of Wind Farm Based on Polyline Fuzzy Neural Network

This paper studies energy storage system participating to frequency regulation of wind farms based on polyline fuzzy neural network (PFNN). Firstly, the concept of generalized inertia of wind-storage combined system is analyzed. Secondly, the frequency requirements of wind-storage combined system are analyzed, and the method of PFNN is introduced. By taking frequency change, frequency change rate and state of energy storage system as the inputs of PFNN, a frequency control method is proposed. Finally, simulations have verified the correctness of the proposed method.