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Experimental study on the vibrational performance and its physical origins of a prototype reversible pump turbine in the pumped hydro energy storage power station

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  • Zhang, Yuning
  • Zheng, Xianghao
  • Li, Jinwei
  • Du, Xiaoze

Abstract

In the present paper, the vibrational performance and its physical origins of a prototype reversible pump turbine in the pumped hydro energy storage power station is experimentally investigated. Specifically, the vibrations of the unit in the X, Y and Z directions of the top cover, the upper and the lower brackets were all measured for three water heads (from 48% to 90% in terms of non-dimensional values) and nine load conditions (from 34% to 96% of the rated power) together with the pressure measurement at several typical monitoring points. Based on our analysis, it was found that the vibrations of the top cover are mainly induced by the fluid flow inside the reversible pump turbine while the vibrations of the upper and the lower brackets are generated by the mechanical aspects of the rotor. For the top cover, three regions are proposed with their characteristics and its physical origins fully demonstrated with the aid of several typical examples. In region I (with the low partial loads), the vibrational level of the unit is the highest and its physical origin is the pressure fluctuation in the vaneless space with the blade passing frequency. In region II (with the medium loads), the vibrational level of the unit is medium and its physical origin is the swirling vortex in the draft tube. In region III (with the high partial load), the vibrational level of the unit is the lowest and its physical origin is twofold: the pressure fluctuation in the vaneless space with the harmonics of blade passing frequency and the mechanical aspects of the rotor. For different water heads, transitions between aforementioned categorized regions could be observed with the primary characteristics maintained. At last, comparing with the cases of the top cover, the vibrations of the upper and the lower brackets are less affected by the load and the water head variations.

Suggested Citation

  • Zhang, Yuning & Zheng, Xianghao & Li, Jinwei & Du, Xiaoze, 2019. "Experimental study on the vibrational performance and its physical origins of a prototype reversible pump turbine in the pumped hydro energy storage power station," Renewable Energy, Elsevier, vol. 130(C), pages 667-676.
    • Handle: RePEc:eee:renene:v:130:y:2019:i:c:p:667-676
    DOI: 10.1016/j.renene.2018.06.057
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    References listed on IDEAS

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    Cited by:

    1. Zheng, Xianghao & Li, Hao & Zhang, Suqi & Zhang, Yuning & Li, Jinwei & Zhang, Yuning & Zhao, Weiqiang, 2023. "Hydrodynamic feature extraction and intelligent identification of flow regimes in vaneless space of a pump turbine using improved empirical wavelet transform and Bayesian optimized convolutional neura," Energy, Elsevier, vol. 282(C).
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    4. Yang, Fan & Li, Zhongbin & Yuan, Yao & Lin, Zhikang & Zhou, Guangxin & Ji, Qingwei, 2022. "Study on vortex flow and pressure fluctuation in dustpan-shaped conduit of a low head axial-flow pump as turbine," Renewable Energy, Elsevier, vol. 196(C), pages 856-869.
    5. Mengqi Yang & Weiqiang Zhao & Huili Bi & Haixia Yang & Qilian He & Xingxing Huang & Zhengwei Wang, 2022. "Flow-Induced Vibration of Non-Rotating Structures of a High-Head Pump-Turbine during Start-Up in Turbine Mode," Energies, MDPI, vol. 15(22), pages 1-18, November.
    6. Liu, Ming & Tan, Lei & Cao, Shuliang, 2019. "Dynamic mode decomposition of gas-liquid flow in a rotodynamic multiphase pump," Renewable Energy, Elsevier, vol. 139(C), pages 1159-1175.
    7. Muhirwa, Alexis & Cai, Wei-Hua & Su, Wen-Tao & Liu, Quanzhong & Binama, Maxime & Li, Biao & Wu, Jian, 2020. "A review on remedial attempts to counteract the power generation compromise from draft tubes of hydropower plants," Renewable Energy, Elsevier, vol. 150(C), pages 743-764.
    8. Su, Wen-Tao & Li, Xiao-Bin & Xia, Yu-Xing & Liu, Quan-Zhong & Binama, Maxime & Zhang, Ya-Ning, 2021. "Pressure fluctuation characteristics of a model pump-turbine during runaway transient," Renewable Energy, Elsevier, vol. 163(C), pages 517-529.
    9. Zheng, Xianghao & Zhang, Suqi & Zhang, Yuning & Li, Jinwei & Zhang, Yuning, 2023. "Dynamic characteristic analysis of pressure pulsations of a pump turbine in turbine mode utilizing variational mode decomposition combined with Hilbert transform," Energy, Elsevier, vol. 280(C).
    10. Li, Xiao-Bin & Binama, Maxime & Su, Wen-Tao & Cai, Wei-Hua & Muhirwa, Alexis & Li, Biao & Li, Feng-Chen, 2020. "Runner blade number influencing RPT runner flow characteristics under off-design conditions," Renewable Energy, Elsevier, vol. 152(C), pages 876-891.
    11. Tian, Yuqiang & Wang, Bin & Chen, Peng & Yang, Ying, 2021. "Finite-time Takagi–Sugeno fuzzy controller design for hydraulic turbine governing systems with mechanical time delays," Renewable Energy, Elsevier, vol. 173(C), pages 614-624.
    12. Yuqiang Tian & Bin Wang & Diyi Chen & Shaokun Wang & Peng Chen & Ying Yang, 2019. "Design of a Nonlinear Predictive Controller for a Fractional-Order Hydraulic Turbine Governing System with Mechanical Time Delay," Energies, MDPI, vol. 12(24), pages 1-16, December.
    13. Li, Deyou & Song, Yechen & Lin, Song & Wang, Hongjie & Qin, Yonglin & Wei, Xianzhu, 2021. "Effect mechanism of cavitation on the hump characteristic of a pump-turbine," Renewable Energy, Elsevier, vol. 167(C), pages 369-383.
    14. Binama, Maxime & Su, Wen-Tao & Cai, Wei-Hua & Li, Xiao-Bin & Muhirwa, Alexis & Li, Biao & Bisengimana, Emmanuel, 2019. "Blade trailing edge position influencing pump as turbine (PAT) pressure field under part-load conditions," Renewable Energy, Elsevier, vol. 136(C), pages 33-47.
    15. Muhirwa, Alexis & Li, Biao & Su, Wen-Tao & Liu, Quan-Zhong & Binama, Maxime & Wu, Jian & Cai, Wei-Hua, 2020. "Investigation on mutual traveling influences between the draft tube and upstream components of a Francis turbine unit," Renewable Energy, Elsevier, vol. 162(C), pages 973-992.
    16. Hong, Sheng & Wu, Yuping & Wu, Jianhua & Zhang, Yuquan & Zheng, Yuan & Li, Jiahui & Lin, Jinran, 2021. "Microstructure and cavitation erosion behavior of HVOF sprayed ceramic-metal composite coatings for application in hydro-turbines," Renewable Energy, Elsevier, vol. 164(C), pages 1089-1099.
    17. Chen, Sheng & Wang, Jing & Zhang, Jian & Yu, Xiaodong & He, Wei, 2020. "Transient behavior of two-stage load rejection for multiple units system in pumped storage plants," Renewable Energy, Elsevier, vol. 160(C), pages 1012-1022.
    18. Julian Unterluggauer & Anton Maly & Eduard Doujak, 2019. "Investigation on the Impact of Air Admission in a Prototype Francis Turbine at Low-Load Operation," Energies, MDPI, vol. 12(15), pages 1-19, July.
    19. Liu, Demin & Zhang, Xiaoxi & Yang, Zhiyan & Liu, Ke & Cheng, Yongguang, 2021. "Evaluating the pressure fluctuations during load rejection of two pump-turbines in a prototype pumped-storage system by using 1D-3D coupled simulation," Renewable Energy, Elsevier, vol. 171(C), pages 1276-1289.
    20. Liu, Ming & Tan, Lei & Cao, Shuliang, 2019. "Dynamic mode decomposition of cavitating flow around ALE 15 hydrofoil," Renewable Energy, Elsevier, vol. 139(C), pages 214-227.
    21. Yongsheng Liu & Chengming Liu & Yongsheng Zhang & Xingxing Huang & Tao Guo & Lingjiu Zhou & Zhengwei Wang, 2023. "Influence of Axial Installation Deviation on the Hydraulic Axial Force of the 1000 MW Francis Runner in the Rated Operating Condition," Energies, MDPI, vol. 16(4), pages 1-20, February.
    22. Nishi, Yasuyuki & Itoh, Natsumi & Fukutomi, Junichiro, 2022. "Performance and radial thrust of single-blade reverse running pump turbine," Renewable Energy, Elsevier, vol. 201(P1), pages 499-513.
    23. Zhu, Di & Tao, Ran & Xiao, Ruofu & Pan, Litan, 2020. "Solving the runner blade crack problem for a Francis hydro-turbine operating under condition-complexity," Renewable Energy, Elsevier, vol. 149(C), pages 298-320.
    24. Ying Yang & Bin Wang & Yuqiang Tian & Peng Chen, 2020. "Fractional-Order Finite-Time, Fault-Tolerant Control of Nonlinear Hydraulic-Turbine-Governing Systems with an Actuator Fault," Energies, MDPI, vol. 13(15), pages 1-20, July.
    25. Zhu, Di & Xiao, Ruofu & Liu, Weichao, 2021. "Influence of leading-edge cavitation on impeller blade axial force in the pump mode of reversible pump-turbine," Renewable Energy, Elsevier, vol. 163(C), pages 939-949.

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