IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v154y2020icp1218-1228.html
   My bibliography  Save this article

Experimental comparison of two different positive slopes in one single pump turbine

Author

Listed:
  • Ran, Hongjuan
  • Liu, Yong
  • Luo, Xianwu
  • Shi, Tianjiao
  • Xu, Yongliang
  • Chen, Yuanlin
  • Wang, Dezhong

Abstract

The grid adjustment is seriously affected by the instability of Pumped Hydro Energy Storage plants (PHES), one of which is the phenomenon of Positive Slope (PS) in pump turbine. In this paper, two positive slopes were experimentally captured on one curve of the discharge-head performance in a pump turbine while only one positive slope is observed on one pump performance curve in general pumps. The similarities and differences of two positive slopes are demonstrated using data obtained with this pump turbine model. It is found that two positive slopes are caused by two different stalls, respectively. For the first positive slope, the stall with five stall cells in the vane-less domain (between impeller and wicket gates) is induced to play a key role. On each pump performance curve, with the smaller opening of guide vanes, the discharge of the first PS is less, until the first PS and the second PS becomes one PS. For the second positive slope, significant complex vortexes in the impeller inlet, the variations of cavitations and a lower signal of pressure fluctuation are observed. The discharges of the second positive slopes almost keep stable with the different wicket gates’ openings. For their common characteristics, hysteresis phenomena are observed in both PS and are influenced by cavitations.

Suggested Citation

  • Ran, Hongjuan & Liu, Yong & Luo, Xianwu & Shi, Tianjiao & Xu, Yongliang & Chen, Yuanlin & Wang, Dezhong, 2020. "Experimental comparison of two different positive slopes in one single pump turbine," Renewable Energy, Elsevier, vol. 154(C), pages 1218-1228.
  • Handle: RePEc:eee:renene:v:154:y:2020:i:c:p:1218-1228
    DOI: 10.1016/j.renene.2020.01.023
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148120300240
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.renene.2020.01.023?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. Li, Deyou & Wang, Hongjie & Qin, Yonglin & Li, Zhenggui & Wei, Xianzhu & Qin, Daqing, 2018. "Mechanism of high amplitude low frequency fluctuations in a pump-turbine in pump mode," Renewable Energy, Elsevier, vol. 126(C), pages 668-680.
    2. Lu, Guocheng & Zuo, Zhigang & Sun, Yuekun & Liu, Demin & Tsujimoto, Yoshinobu & Liu, Shuhong, 2017. "Experimental evidence of cavitation influences on the positive slope on the pump performance curve of a low specific speed model pump-turbine," Renewable Energy, Elsevier, vol. 113(C), pages 1539-1550.
    3. Yang, Jun & Pavesi, Giorgio & Liu, Xiaohua & Xie, Tian & Liu, Jun, 2018. "Unsteady flow characteristics regarding hump instability in the first stage of a multistage pump-turbine in pump mode," Renewable Energy, Elsevier, vol. 127(C), pages 377-385.
    4. Li, Deyou & Wang, Hongjie & Qin, Yonglin & Wei, Xianzhu & Qin, Daqing, 2018. "Numerical simulation of hysteresis characteristic in the hump region of a pump-turbine model," Renewable Energy, Elsevier, vol. 115(C), pages 433-447.
    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. Yong Liu & Dezhong Wang & Hongjuan Ran & Rui Xu & Yu Song & Bo Gong, 2021. "RANS CFD Analysis of Hump Formation Mechanism in Double-Suction Centrifugal Pump under Part Load Condition," Energies, MDPI, vol. 14(20), pages 1-17, October.

    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. Li, Deyou & Zuo, Zhigang & Wang, Hongjie & Liu, Shuhong & Wei, Xianzhu & Qin, Daqing, 2019. "Review of positive slopes on pump performance characteristics of pump-turbines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 112(C), pages 901-916.
    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. Li, Xiaojun & Chen, Bo & Luo, Xianwu & Zhu, Zuchao, 2020. "Effects of flow pattern on hydraulic performance and energy conversion characterisation in a centrifugal pump," Renewable Energy, Elsevier, vol. 151(C), pages 475-487.
    4. 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.
    5. Wang, Cong & Zhang, Yongxue & Yuan, Zhiyi & Ji, Kaizhuo, 2020. "Development and application of the entropy production diagnostic model to the cavitation flow of a pump-turbine in pump mode," Renewable Energy, Elsevier, vol. 154(C), pages 774-785.
    6. Lu, Guocheng & Li, Deyou & Zuo, Zhigang & Liu, Shuhong & Wang, Hongjie, 2020. "A boundary vorticity diagnosis of the flows in a model pump-turbine in turbine mode," Renewable Energy, Elsevier, vol. 153(C), pages 1465-1478.
    7. Deyou Li & Yuekun Sun & Zhigang Zuo & Shuhong Liu & Hongjie Wang & Zhenggui Li, 2018. "Analysis of Pressure Fluctuations in a Prototype Pump-Turbine with Different Numbers of Runner Blades in Turbine Mode," Energies, MDPI, vol. 11(6), pages 1-17, June.
    8. 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.
    9. Suh, Jun-Won & Kim, Seung-Jun & Kim, Jin-Hyuk & Joo, Won-Gu & Park, Jungwan & Choi, Young-Seok, 2020. "Effect of interface condition on the hydraulic characteristics of a pump-turbine at various guide vane opening conditions in pump mode," Renewable Energy, Elsevier, vol. 154(C), pages 986-1004.
    10. 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.
    11. Li, Deyou & Chang, Hong & Zuo, Zhigang & Wang, Hongjie & Li, Zhenggui & Wei, Xianzhu, 2020. "Experimental investigation of hysteresis on pump performance characteristics of a model pump-turbine with different guide vane openings," Renewable Energy, Elsevier, vol. 149(C), pages 652-663.
    12. 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.
    13. Zhao, Yuanqi & Li, Deyou & Chang, Hong & Fu, Xiaolong & Wang, Hongjie & Qin, Daqing, 2023. "Suppression effect of bionic guide vanes with different parameters on the hump characteristics of pump-turbines based on entropy production theory," Energy, Elsevier, vol. 283(C).
    14. Xu, Lianchen & Kan, Kan & Zheng, Yuan & Liu, Demin & Binama, Maxime & Xu, Zhe & Yan, Xiaotong & Guo, Mengqi & Chen, Huixiang, 2024. "Rotating stall mechanism of pump-turbine in hump region: An insight into vortex evolution," Energy, Elsevier, vol. 292(C).
    15. Qin, Yonglin & Li, Deyou & Wang, Hongjie & Liu, Zhansheng & Wei, Xianzhu & Wang, Xiaohang, 2022. "Multi-objective optimization design on high pressure side of a pump-turbine runner with high efficiency," Renewable Energy, Elsevier, vol. 190(C), pages 103-120.
    16. Hao, Yue & Tan, Lei, 2018. "Symmetrical and unsymmetrical tip clearances on cavitation performance and radial force of a mixed flow pump as turbine at pump mode," Renewable Energy, Elsevier, vol. 127(C), pages 368-376.
    17. 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.
    18. Yun Jia & Xianzhu Wei & Qianyun Wang & Jinsheng Cui & Fengchen Li, 2019. "Experimental Study of the Effect of Splitter Blades on the Performance Characteristics of Francis Turbines," Energies, MDPI, vol. 12(9), pages 1-16, May.
    19. Simin Shen & Zhongdong Qian & Bin Ji, 2019. "Numerical Analysis of Mechanical Energy Dissipation for an Axial-Flow Pump Based on Entropy Generation Theory," Energies, MDPI, vol. 12(21), pages 1-22, October.
    20. Fan, Yading & Chen, Tairan & Liang, Wendong & Wang, Guoyu & Huang, Biao, 2022. "Numerical and theoretical investigations of the cavitation performance and instability for the cryogenic inducer," Renewable Energy, Elsevier, vol. 184(C), pages 291-305.

    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:154:y:2020:i:c:p:1218-1228. 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.