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Differences of Flow Patterns and Pressure Pulsations in Four Prototype Pump-Turbines during Runaway Transient Processes

Author

Listed:
  • Zhiyan Yang

    (State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China)

  • Zirui Liu

    (State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China)

  • Yongguang Cheng

    (State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China)

  • Xiaoxi Zhang

    (School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361024, China)

  • Ke Liu

    (State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China)

  • Linsheng Xia

    (China Ship Development and Design Center, Wuhan 430064, China)

Abstract

Frequent working condition conversions in pumped-storage power stations often induce stability problems, especially when the operating point enters the S-shaped region, during which flow transitions and pressure fluctuations are serious. The pump-turbines with different specific speed values show different characteristics, but their differences in stability features are still not clear. In this study, four different pump-turbines were selected to simulate the runaway processes from turbine modes. The similarities and differences of flow patterns and pressure fluctuations were analyzed. For the similarities, pressure pulsations increase gradually and fluctuate suddenly once the backflows occur at the runner inlets. For the differences, the evolutions of backflows and pressure pulsations are related to specific speeds and runner shapes. Firstly, it is easier for the lower specific speed turbines to enter the reverse pump mode. Secondly, the blade lean angle influences the position where backflows occur, because it determines the pressure gradient at the runner inlets. Thirdly, the runner inlet height influences pressure pulsations in the vaneless space, because the relative range of backflow transitions will be enlarged with the decrease of specific speed. Overall, investigating the mechanisms of flow pattern transitions and pressure variations is important for runner design and transient process control.

Suggested Citation

  • Zhiyan Yang & Zirui Liu & Yongguang Cheng & Xiaoxi Zhang & Ke Liu & Linsheng Xia, 2020. "Differences of Flow Patterns and Pressure Pulsations in Four Prototype Pump-Turbines during Runaway Transient Processes," Energies, MDPI, vol. 13(20), pages 1-20, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:20:p:5269-:d:426167
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    References listed on IDEAS

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    1. Chirag Trivedi & Michel J. Cervantes & B. K. Gandhi, 2016. "Investigation of a High Head Francis Turbine at Runaway Operating Conditions," Energies, MDPI, vol. 9(3), pages 1-22, March.
    2. Liu, Quan-Zhong & Su, Wen-Tao & Li, Xiao-Bin & Zhang, Ya-Ning, 2020. "Dynamic characteristics of load rejection process in a reversible pump-turbine," Renewable Energy, Elsevier, vol. 146(C), pages 1922-1931.
    3. Trivedi, Chirag & Gandhi, Bhupendra K. & Cervantes, Michel J. & Dahlhaug, Ole Gunnar, 2015. "Experimental investigations of a model Francis turbine during shutdown at synchronous speed," Renewable Energy, Elsevier, vol. 83(C), pages 828-836.
    4. Barbour, Edward & Wilson, I.A. Grant & Radcliffe, Jonathan & Ding, Yulong & Li, Yongliang, 2016. "A review of pumped hydro energy storage development in significant international electricity markets," Renewable and Sustainable Energy Reviews, Elsevier, vol. 61(C), pages 421-432.
    5. Yang, Zhiyan & Cheng, Yongguang & Xia, Linsheng & Meng, Wanwan & Liu, Ke & Zhang, Xiaoxi, 2020. "Evolutions of flow patterns and pressure fluctuations in a prototype pump-turbine during the runaway transient process after pump-trip," Renewable Energy, Elsevier, vol. 152(C), pages 1149-1159.
    6. Fu, Xiaolong & Li, Deyou & Wang, Hongjie & Zhang, Guanghui & Li, Zhenggui & Wei, Xianzhu, 2020. "Numerical simulation of the transient flow in a pump-turbine during load rejection process with special emphasis on hydraulic acoustic effect," Renewable Energy, Elsevier, vol. 155(C), pages 1127-1138.
    7. Li, Deyou & Fu, Xiaolong & Zuo, Zhigang & Wang, Hongjie & Li, Zhenggui & Liu, Shuhong & Wei, Xianzhu, 2019. "Investigation methods for analysis of transient phenomena concerning design and operation of hydraulic-machine systems—A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 101(C), pages 26-46.
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    Cited by:

    1. Kan, Kan & Xu, Zhe & Chen, Huixiang & Xu, Hui & Zheng, Yuan & Zhou, Daqing & Muhirwa, Alexis & Maxime, Binama, 2022. "Energy loss mechanisms of transition from pump mode to turbine mode of an axial-flow pump under bidirectional conditions," Energy, Elsevier, vol. 257(C).
    2. Xiaoxia Hou & Yongguang Cheng & Zhiyan Yang & Ke Liu & Xiaoxi Zhang & Demin Liu, 2021. "Influence of Clearance Flow on Dynamic Hydraulic Forces of Pump-Turbine during Runaway Transient Process," Energies, MDPI, vol. 14(10), pages 1-20, May.
    3. Jun-Won Suh & Seung-Jun Kim & Hyeon-Mo Yang & Moo-Sung Kim & Won-Gu Joo & Jungwan Park & Jin-Hyuk Kim & Young-Seok Choi, 2021. "A Comparative Study of the Scale Effect on the S-Shaped Characteristics of a Pump-Turbine Unit," Energies, MDPI, vol. 14(3), pages 1-29, January.
    4. Xinfeng Ge & Jing Zhang & Jian Zhang & Demin Liu & Yuan Zheng & Huixiang Chen, 2022. "Review of Research on the Three-Dimensional Transition Process of Large-Scale Low-Lift Pump," Energies, MDPI, vol. 15(22), pages 1-34, November.

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