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A new draft tube shape optimisation methodology of introducing inclined conical diffuser in hydraulic turbine

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  • Zhou, Xing
  • Wu, Hegao
  • Cheng, Li
  • Huang, Quanshui
  • Shi, Changzheng

Abstract

A grid-connected integrated system incorporating cascade hydropower, solar/photovoltaic, and wind power requires a hydraulic turbine to operate frequently under off-design conditions, resulting in a series of instability issues, such as pressure fluctuations. In this study, a new draft tube shape optimisation methodology of introducing an inclined conical diffuser for a Francis turbine was proposed to eliminate vortex rope and mitigate the associated pressure fluctuations. Four different inclination angles in the range of 0°–16.8° were considered to investigate the effectiveness of the modified draft tube. The results demonstrated that the maximum pressure fluctuation amplitude within the draft tube was 1.64% times the equivalent pressure under the rated water head for the modified draft tube, showing an 18.4% reduction compared with that of the traditional case. In addition, an overall index of Pdegree was proposed to quantitatively measure the mitigating impact of this type of modified draft tube on the pressure fluctuations. When the inclination angle is 16.8°, the Pdegree on the downstream and upstream sides decreases by 34.1% and 23.1%, respectively, when compared to the traditional draft tube. Based on a comprehensive comparison of the vortex rope, instantaneous axial velocity, and pressure distribution, the mitigating mechanism of the modified draft tube was further explored. Finally, further optimisation direction was pointed out by means of entropy production theory.

Suggested Citation

  • Zhou, Xing & Wu, Hegao & Cheng, Li & Huang, Quanshui & Shi, Changzheng, 2023. "A new draft tube shape optimisation methodology of introducing inclined conical diffuser in hydraulic turbine," Energy, Elsevier, vol. 265(C).
    • Handle: RePEc:eee:energy:v:265:y:2023:i:c:s0360544222032601
    DOI: 10.1016/j.energy.2022.126374
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    1. Zhao, Zhigao & Yang, Jiandong & Chung, C.Y. & Yang, Weijia & He, Xianghui & Chen, Man, 2021. "Performance enhancement of pumped storage units for system frequency support based on a novel small signal model," Energy, Elsevier, vol. 234(C).
    2. David Valentín & Alexandre Presas & Eduard Egusquiza & Carme Valero & Mònica Egusquiza & Matias Bossio, 2017. "Power Swing Generated in Francis Turbines by Part Load and Overload Instabilities," Energies, MDPI, vol. 10(12), pages 1-17, December.
    3. Arispe, Tania M. & de Oliveira, Waldir & Ramirez, Ramiro G., 2018. "Francis turbine draft tube parameterization and analysis of performance characteristics using CFD techniques," Renewable Energy, Elsevier, vol. 127(C), pages 114-124.
    4. Masoodi, Junaid H. & Harmain, G.A., 2017. "A methodology for assessment of erosive wear on a Francis turbine runner," Energy, Elsevier, vol. 118(C), pages 644-657.
    5. Arthur Favrel & Nak-joong Lee & Tatsuya Irie & Kazuyoshi Miyagawa, 2021. "Design of Experiments Applied to Francis Turbine Draft Tube to Minimize Pressure Pulsations and Energy Losses in Off-Design Conditions," Energies, MDPI, vol. 14(13), pages 1-25, June.
    6. Li, Meng & Gao, Yuning & Meng, Bo & Yang, Zhusong, 2021. "Managing the mitigation: Analysis of the effectiveness of target-based policies on China's provincial carbon emission and transfer," Energy Policy, Elsevier, vol. 151(C).
    7. Yu, An & Zou, Zhipeng & Zhou, Daqing & Zheng, Yuan & Luo, Xianwu, 2020. "Investigation of the correlation mechanism between cavitation rope behavior and pressure fluctuations in a hydraulic turbine," Renewable Energy, Elsevier, vol. 147(P1), pages 1199-1208.
    8. Ruppert, Leopold & Schürhuber, Robert & List, Bernhard & Lechner, Alois & Bauer, Christian, 2017. "An analysis of different pumped storage schemes from a technological and economic perspective," Energy, Elsevier, vol. 141(C), pages 368-379.
    9. 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.
    10. Gu, Yandong & Pei, Ji & Yuan, Shouqi & Wang, Wenjie & Zhang, Fan & Wang, Peng & Appiah, Desmond & Liu, Yong, 2019. "Clocking effect of vaned diffuser on hydraulic performance of high-power pump by using the numerical flow loss visualization method," Energy, Elsevier, vol. 170(C), pages 986-997.
    11. Goyal, Rahul & Gandhi, Bhupendra K., 2018. "Review of hydrodynamics instabilities in Francis turbine during off-design and transient operations," Renewable Energy, Elsevier, vol. 116(PA), pages 697-709.
    12. Zhou, Xing & Shi, Changzheng & Miyagawa, Kazuyoshi & Wu, Hegao, 2021. "Effect of modified draft tube with inclined conical diffuser on flow instabilities in Francis turbine," Renewable Energy, Elsevier, vol. 172(C), pages 606-617.
    13. Wang, Zhiqi & Xie, Baoqi & Xia, Xiaoxia & Yang, Huya & Zuo, Qingsong & Liu, Zhipeng, 2022. "Energy loss of radial inflow turbine for organic Rankine cycle using mixture based on entropy production method," Energy, Elsevier, vol. 245(C).
    14. Trivedi, Chirag & Cervantes, Michel J., 2017. "Fluid-structure interactions in Francis turbines: A perspective review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 68(P1), pages 87-101.
    15. 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.
    16. Liu, Guanjun & Qin, Hui & Shen, Qin & Lyv, Hao & Qu, Yuhua & Fu, Jialong & Liu, Yongqi & Zhou, Jianzhong, 2021. "Probabilistic spatiotemporal solar irradiation forecasting using deep ensembles convolutional shared weight long short-term memory network," Applied Energy, Elsevier, vol. 300(C).
    17. Xing Zhou & Changzheng Shi & Kazuyoshi Miyagawa & Hegao Wu & Jinhong Yu & Zhu Ma, 2020. "Investigation of Pressure Fluctuation and Pulsating Hydraulic Axial Thrust in Francis Turbines," Energies, MDPI, vol. 13(7), pages 1-16, April.
    18. 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.
    19. 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.
    20. Ardizzon, G. & Cavazzini, G. & Pavesi, G., 2014. "A new generation of small hydro and pumped-hydro power plants: Advances and future challenges," Renewable and Sustainable Energy Reviews, Elsevier, vol. 31(C), pages 746-761.
    21. Yu, Zhi-Feng & Wang, Wen-Quan & Yan, Yan & Liu, Xing-Shun, 2021. "Energy loss evaluation in a Francis turbine under overall operating conditions using entropy production method," Renewable Energy, Elsevier, vol. 169(C), pages 982-999.
    22. Wang, Wenjie & Tai, Geyuan & Pei, Ji & Pavesi, Giorgio & Yuan, Shouqi, 2022. "Numerical investigation of the effect of the closure law of wicket gates on the transient characteristics of pump-turbine in pump mode," Renewable Energy, Elsevier, vol. 194(C), pages 719-733.
    23. 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.
    24. Lu, Jie & Qian, Zhongdong & Lee, Young-Ho, 2021. "Numerical investigation of unsteady characteristics of a pump turbine under runaway condition," Renewable Energy, Elsevier, vol. 169(C), pages 905-924.
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    3. Zhou, Xing & Hu, Xinyi & Huang, Quanshui & Wu, Hegao & Tang, Xiaodan & Cervantes, Michel J., 2024. "Optimization design of an innovative francis draft tube: Insight into improving operational flexibility," Energy, Elsevier, vol. 299(C).

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