HE Yingjing;WANG Xiang;DAN Yangqing;CHEN Qingyue;LI Haibo;LU Zongxiang;

• 1:State Grid Zhejiang Economic and Technology Research Institute
• 2:Department of Electrical Engineering
• 3: Tsinghua University

Abstract：

To enhance the flexibility regulation capability of new-type power systems and address the volatility and uncertainty brought by large-scale renewable energy integration, an optimal scheduling strategy for a wind-solarhydro-pumped storage complementary system considering source-load uncertainty is proposed. An optimal scheduling model is established with the objective of maximizing the combined generation of hydropower stations and pumped storage power stations, and a quantitative flexibility regulation capability index is introduced. Production simulations are performed for four typical daily scenarios with seasonal variations and one special extreme scenario, obtained using K-means clustering. The flexibility regulation capability of hydropower and pumped storage is analyzed. The results show that the strategy can reasonably allocate the generation output, thereby achieving optimal scheduling.

Key Words： regulation capability;pumped storage;source-load uncertainty;K-means;cascade hydropower

Abstract:

Keywords:

Foundation: 国家电网有限公司总部科技项目（4000-202319075A-1-1-ZN）

Authors: HE Yingjing;WANG Xiang;DAN Yangqing;CHEN Qingyue;LI Haibo;LU Zongxiang;

DOI: 10.19585/j.zjdl.202504011

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