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Investigations of unsteady pressure loading in a Francis turbine during variable-speed operation

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  • Trivedi, Chirag
  • Agnalt, Einar
  • Dahlhaug, Ole Gunnar

Abstract

Current study was aimed to investigate the unsteady pressure loading in a model Francis turbine under variable-speed configurations. Focus was to investigate the time-dependent characteristic frequencies and the pressure amplitudes. Detailed analysis of both stochastic and deterministic pressure loading in the vaneless space, runner and draft tube was conducted. Total 12 pressure sensors were integrated in the turbine, including four sensors in the runner. The runner rotational speed was changed by ±30% of the rated speed, and the guide vanes were at a fixed aperture. Total four operating conditions were investigated. The measurements showed that, in the vaneless space and runner, amplitudes of unsteady pressure fluctuations increase with the runner angular speed. Pressure field at the blade trailing edge is strongly influenced by the draft tube flow at part load and low load. The variable-speed configuration allowed power generation under the stable condition, where the vortex rope effect is low. However, this led to high-amplitude stochastic frequencies in the runner and draft tube. Overall, the pressure measurements indicated that not only efficiency but also detailed study on pressure fluctuations inside the turbine is vital before designing a runner for the variable-speed configurations.

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  • Trivedi, Chirag & Agnalt, Einar & Dahlhaug, Ole Gunnar, 2017. "Investigations of unsteady pressure loading in a Francis turbine during variable-speed operation," Renewable Energy, Elsevier, vol. 113(C), pages 397-410.
    • Handle: RePEc:eee:renene:v:113:y:2017:i:c:p:397-410
    DOI: 10.1016/j.renene.2017.06.005
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    References listed on IDEAS

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    1. Beevers, D. & Branchini, L. & Orlandini, V. & De Pascale, A. & Perez-Blanco, H., 2015. "Pumped hydro storage plants with improved operational flexibility using constant speed Francis runners," Applied Energy, Elsevier, vol. 137(C), pages 629-637.
    2. Caralis, G. & Papantonis, D. & Zervos, A., 2012. "The role of pumped storage systems towards the large scale wind integration in the Greek power supply system," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(5), pages 2558-2565.
    3. Zuo, Zhigang & Liu, Shuhong & Sun, Yuekun & Wu, Yulin, 2015. "Pressure fluctuations in the vaneless space of High-head pump-turbines—A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 41(C), pages 965-974.
    4. 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.
    5. Zeng, Wei & Yang, Jiandong & Yang, Weijia, 2016. "Instability analysis of pumped-storage stations under no-load conditions using a parameter-varying model," Renewable Energy, Elsevier, vol. 90(C), pages 420-429.
    6. Yang, Weijia & Norrlund, Per & Saarinen, Linn & Yang, Jiandong & Guo, Wencheng & Zeng, Wei, 2016. "Wear and tear on hydro power turbines – Influence from primary frequency control," Renewable Energy, Elsevier, vol. 87(P1), pages 88-95.
    7. Liu, Xin & Luo, Yongyao & Wang, Zhengwei, 2016. "A review on fatigue damage mechanism in hydro turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 1-14.
    8. Liu, Xin & Luo, Yongyao & Karney, Bryan W. & Wang, Weizheng, 2015. "A selected literature review of efficiency improvements in hydraulic turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 51(C), pages 18-28.
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    Cited by:

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    5. Trivedi, Chirag & Iliev, Igor & Dahlhaug, Ole Gunnar & Markov, Zoran & Engstrom, Fredrik & Lysaker, Henning, 2020. "Investigation of a Francis turbine during speed variation: Inception of cavitation," Renewable Energy, Elsevier, vol. 166(C), pages 147-162.
    6. Trivedi, Chirag & Agnalt, Einar & Dahlhaug, Ole Gunnar, 2018. "Experimental study of a Francis turbine under variable-speed and discharge conditions," Renewable Energy, Elsevier, vol. 119(C), pages 447-458.
    7. Wang, Wen-Quan & Yu, Zhi-Feng & Yan, Yan & Wei, Xin-Yu, 2024. "Numerical investigation on vortex characteristics in a low-head Francis turbine operating of adjustable-speed at part load conditions," Energy, Elsevier, vol. 302(C).
    8. Iliev, Igor & Trivedi, Chirag & Dahlhaug, Ole Gunnar, 2019. "Variable-speed operation of Francis turbines: A review of the perspectives and challenges," Renewable and Sustainable Energy Reviews, Elsevier, vol. 103(C), pages 109-121.
    9. Salehi, Saeed & Nilsson, Håkan & Lillberg, Eric & Edh, Nicolas, 2021. "An in-depth numerical analysis of transient flow field in a Francis turbine during shutdown," Renewable Energy, Elsevier, vol. 179(C), pages 2322-2347.
    10. Li, Huanhuan & Chen, Diyi & Arzaghi, Ehsan & Abbassi, Rouzbeh & Xu, Beibei & Patelli, Edoardo & Tolo, Silvia, 2018. "Safety assessment of hydro-generating units using experiments and grey-entropy correlation analysis," Energy, Elsevier, vol. 165(PA), pages 222-234.

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