Hunan Electric Power ›› 2025, Vol. 45 ›› Issue (2): 69-73.doi: 10.3969/j.issn.1008-0198.2025.02.009

• Source and Grid Coordination & Conversion and Utilization • Previous Articles     Next Articles

Research on Technological Reformation of Wide-Load Flexible Regulation for Large Francis Hydroelectric Units

TIAN Haiping1,2, WANG Huibin1,2, ZHOU Lihua3, REN Zaimei4, XU Yongliang4   

  1. 1. State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410208, China;
    2. Hunan Province Key Laboratory of Efficient and Clean Power Generation Technologies, Changsha 410208, China;
    3. State Grid Hunan Electric Power Company Limited Hydroelectric Branch, Changsha 410004, China;
    4. Harbin Research Institute of Large Machinery Co., Ltd., Harbin 150040, China
  • Received:2024-10-14 Revised:2025-01-07 Published:2025-04-30

Abstract: Aiming at the problem that building new power system requires conventional hydroelectric units to have a wider load operating range and faster regulation ability, taking a large francis turbine of a hydroelectric power plant as the research object, the research on the wide-load flexible regulation reformation is conducted, the operation characteristics of the old hydro turbine in hydroelectric power plant in the past ten years and the existing problems are counted, the reasons why the old unit does not adapt to the new power system and the difficulties in the reformation are analyzed, and the technical scheme of reformation is put forward and verified by model test. The results show that the proposed wide-load reformation scheme is feasible and can provide a reference for the reformation of other old hydroelectric units of the same type.

Key words: new power system, hydroturbine, wide-load reformation, hydraulic design

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