Optimal Scheme of Energy Storage System with Wind Power Integration Considering Negative Peak Load Regulation Capacity

Interference caused by wind power integration has aggravated peak load regulation difficulty of power systems, especially, for the negative peak load regulation capacity. The energy storage system (ESS) is regarded as a desirable alternative for peak load regulation due to its good properties in flexibility. In order to fully exploit the advantages of ESS in peak load regulation, an optimization model aiming at maximizing the negative peak load regulation capacity is proposed in this paper. The impact of wind power uncertainty and the assistance of participated ESS on the peak shaving are considered. Then, the optimal scheme of ESS is obtained which can reduce the negative peak load regulation pressure obviously. Finally, the performance and effectiveness of the proposed method are demonstrated with actual power system in North China.