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Effect of Operating Head on Dynamic Behavior of a Pump–Turbine Runner in Turbine Mode

Author

Listed:
  • Xiangyang Li

    (Fujian Xianyou Pumped Storage Co., Ltd., Putian 351267, China)

  • Jingwei Cao

    (Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

  • Jianling Zhuang

    (Fujian Xianyou Pumped Storage Co., Ltd., Putian 351267, China)

  • Tongmao Wu

    (Fujian Xianyou Pumped Storage Co., Ltd., Putian 351267, China)

  • Hongyong Zheng

    (Fujian Xianyou Pumped Storage Co., Ltd., Putian 351267, China)

  • Yunfeng Wang

    (Fujian Xianyou Pumped Storage Co., Ltd., Putian 351267, China)

  • Wenqiang Zheng

    (Fujian Xianyou Pumped Storage Co., Ltd., Putian 351267, China)

  • Guoqing Lin

    (Fujian Xianyou Pumped Storage Co., Ltd., Putian 351267, China)

  • Zhengwei Wang

    (Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China)

Abstract

Pumped storage units improve the stability of the power grid, and the key component is the pump–turbine. A pump–turbine usually needs to start and shutdown frequently, and the operating head varies greatly due to changes in the water level of the reservoir, which makes the dynamic behavior of a pump–turbine runner extremely complex. This paper investigates the effects of operating head on the dynamic response characteristics of a pump–turbine runner in turbine mode. The flow characteristics of the pump–turbine at maximum head, rated head and minimum head are analyzed, and the dynamic response characteristic of the pump–turbine runner are numerically studied. The results show that operating head can affect the pressure pulsation and dynamic stress characteristics of the pump–turbine runner, but it has little effect on the frequency spectra. The conclusions of this paper intend to improve understanding of the effects of the operating head on the dynamic behavior of the pump–turbine runner, therefore providing a theoretical reference for safe and stable operation of the pump–turbine unit.

Suggested Citation

  • Xiangyang Li & Jingwei Cao & Jianling Zhuang & Tongmao Wu & Hongyong Zheng & Yunfeng Wang & Wenqiang Zheng & Guoqing Lin & Zhengwei Wang, 2022. "Effect of Operating Head on Dynamic Behavior of a Pump–Turbine Runner in Turbine Mode," Energies, MDPI, vol. 15(11), pages 1-15, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:11:p:4004-:d:827349
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    References listed on IDEAS

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