IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v119y2018icp447-458.html
   My bibliography  Save this article

Experimental study of a Francis turbine under variable-speed and discharge conditions

Author

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

Abstract

This work investigates the unsteady pressure fluctuations in a hydraulic turbine that are observed during steep ramping. Although hydraulic turbines are expected to operate seamlessly during steep ramping, the resulting pressure amplitudes are so significant that they take a toll on a machine's operating life. Objective of the present study is to investigate time-dependent pressure amplitudes in the vaneless space, runner and draft tube during power ramping-up and -down under variable-speed configuration. Novelty is to vary both discharge and rotational speed of a runner. The measurements are performed on a high-head model Francis turbine. The investigations revealed that amplitudes of characteristics frequencies, especially rotor-stator interaction, are small during steep ramping however, at the end of transient cycle, the amplitudes quickly increased 30-fold. During steep ramping, blade passing frequency was appeared in the runner, which is uncommon phenomenon in high-head Francis turbines. Strong reflection of pressure waves towards runner from vaneless space (guide vane walls) may be one of the causes for the appearance of blade passing frequency in the runner.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:renene:v:119:y:2018:i:c:p:447-458
    DOI: 10.1016/j.renene.2017.12.040
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148117312442
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2017.12.040?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. 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.
    2. 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.
    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. 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.
    5. 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.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Sotoudeh, Nahale & Maddahian, Reza & Cervantes, Michel J., 2020. "Investigation of Rotating Vortex Rope formation during load variation in a Francis turbine draft tube," Renewable Energy, Elsevier, vol. 151(C), pages 238-254.
    2. Cavazzini, Giovanna & Houdeline, Jean-Bernard & Pavesi, Giorgio & Teller, Olivier & Ardizzon, Guido, 2018. "Unstable behaviour of pump-turbines and its effects on power regulation capacity of pumped-hydro energy storage plants," Renewable and Sustainable Energy Reviews, Elsevier, vol. 94(C), pages 399-409.
    3. Bosioc, Alin Ilie & Tănasă, Constantin, 2020. "Experimental study of swirling flow from conical diffusers using the water jet control method," Renewable Energy, Elsevier, vol. 152(C), pages 385-398.
    4. 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.
    5. Baidar, Binaya & Nicolle, Jonathan & Gandhi, Bhupendra K. & Cervantes, Michel J., 2020. "Effects of runner change on the Winter-Kennedy flow measurement method – A numerical study," Renewable Energy, Elsevier, vol. 153(C), pages 975-984.
    6. Chen, Huixiang & Zhou, Daqing & Kan, Kan & Guo, Junxun & Zheng, Yuan & Binama, Maxime & Xu, Zhe & Feng, Jiangang, 2021. "Transient characteristics during the co-closing guide vanes and runner blades of a bulb turbine in load rejection process," Renewable Energy, Elsevier, vol. 165(P2), pages 28-41.
    7. 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.
    8. Iman-Eini, Hossein & Frey, David & Bacha, Seddik & Boudinet, Cedric & Schanen, Jean-Luc, 2019. "Evaluation of loss effect on optimum operation of variable speed micro-hydropower energy conversion systems," Renewable Energy, Elsevier, vol. 131(C), pages 1022-1034.
    9. Lei, Liuwei & Li, Feng & Xu, Beibei & Egusquiza, Mònica & Luo, Xingqi & Zhang, Junzhi & Egusquiza, Eduard & Chen, Diyi & Jiang, Wei & Patelli, Edoardo, 2022. "Time-frequency domain characteristics analysis of a hydro-turbine governor system considering vortex rope excitation," Renewable Energy, Elsevier, vol. 183(C), pages 172-187.
    10. 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).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. 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.
    2. 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.
    3. 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.
    4. Kougias, Ioannis & Aggidis, George & Avellan, François & Deniz, Sabri & Lundin, Urban & Moro, Alberto & Muntean, Sebastian & Novara, Daniele & Pérez-Díaz, Juan Ignacio & Quaranta, Emanuele & Schild, P, 2019. "Analysis of emerging technologies in the hydropower sector," Renewable and Sustainable Energy Reviews, Elsevier, vol. 113(C), pages 1-1.
    5. Presas, Alexandre & Luo, Yongyao & Wang, Zhengwei & Guo, Bao, 2019. "Fatigue life estimation of Francis turbines based on experimental strain measurements: Review of the actual data and future trends," Renewable and Sustainable Energy Reviews, Elsevier, vol. 102(C), pages 96-110.
    6. 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.
    7. Xijun Zhou & Yongjin Ye & Xianyu Zhang & Xiuwei Yang & Haijun Wang, 2022. "Refined 1D–3D Coupling for High-Frequency Forced Vibration Analysis in Hydraulic Systems," Energies, MDPI, vol. 15(16), pages 1-18, August.
    8. Ma, Tao & Yang, Hongxing & Lu, Lin & Peng, Jinqing, 2014. "Technical feasibility study on a standalone hybrid solar-wind system with pumped hydro storage for a remote island in Hong Kong," Renewable Energy, Elsevier, vol. 69(C), pages 7-15.
    9. Ming Zhang & David Valentin & Carme Valero & Mònica Egusquiza & Weiqiang Zhao, 2018. "Numerical Study on the Dynamic Behavior of a Francis Turbine Runner Model with a Crack," Energies, MDPI, vol. 11(7), pages 1-18, June.
    10. Daqing Zhou & Huixiang Chen & Jie Zhang & Shengwen Jiang & Jia Gui & Chunxia Yang & An Yu, 2019. "Numerical Study on Flow Characteristics in a Francis Turbine during Load Rejection," Energies, MDPI, vol. 12(4), pages 1-15, February.
    11. Sun, Longgang & Xu, Hongyang & Li, Chenxi & Guo, Pengcheng & Xu, Zhuofei, 2024. "Unsteady assessment and alleviation of inter-blade vortex in Francis turbine," Applied Energy, Elsevier, vol. 358(C).
    12. Fu, Xiaolong & Li, Deyou & Wang, Hongjie & Zhang, Guanghui & Li, Zhenggui & Wei, Xianzhu, 2018. "Influence of the clearance flow on the load rejection process in a pump-turbine," Renewable Energy, Elsevier, vol. 127(C), pages 310-321.
    13. Solomon, A.A. & Kammen, Daniel M. & Callaway, D., 2016. "Investigating the impact of wind–solar complementarities on energy storage requirement and the corresponding supply reliability criteria," Applied Energy, Elsevier, vol. 168(C), pages 130-145.
    14. Geng, Xinmin & Zhou, Ye & Zhao, Weiqiang & Shi, Li & Chen, Diyi & Bi, Xiaojian & Xu, Beibei, 2024. "Pricing ancillary service of a Francis hydroelectric generating system to promote renewable energy integration in a clean energy base: Tariff compensation of deep peak regulation," Renewable Energy, Elsevier, vol. 226(C).
    15. Wencheng Guo & Yang Liu & Fangle Qu & Xinyu Xu, 2020. "A Review of Critical Stable Sectional Areas for the Surge Tanks of Hydropower Stations," Energies, MDPI, vol. 13(23), pages 1-25, December.
    16. Kapsali, M. & Anagnostopoulos, J.S., 2017. "Investigating the role of local pumped-hydro energy storage in interconnected island grids with high wind power generation," Renewable Energy, Elsevier, vol. 114(PB), pages 614-628.
    17. 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.
    18. Jin, Faye & Luo, Yongyao & Zhao, Qiang & Cao, Jiali & Wang, Zhengwei, 2023. "Energy loss analysis of transition simulation for a prototype reversible pump turbine during load rejection process," Energy, Elsevier, vol. 284(C).
    19. Zhang, Yuning & Tang, Ningning & Niu, Yuguang & Du, Xiaoze, 2016. "Wind energy rejection in China: Current status, reasons and perspectives," Renewable and Sustainable Energy Reviews, Elsevier, vol. 66(C), pages 322-344.
    20. Papaefthymiou, Stefanos V. & Lakiotis, Vasileios G. & Margaris, Ioannis D. & Papathanassiou, Stavros A., 2015. "Dynamic analysis of island systems with wind-pumped-storage hybrid power stations," Renewable Energy, Elsevier, vol. 74(C), pages 544-554.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:119:y:2018:i:c:p:447-458. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.