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Numerical analysis of the hydraulic transient response in the presence of surge tanks and relief valves

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  • Riasi, Alireza
  • Tazraei, Pedram

Abstract

Water hammer as a critical consequence of unsteadiness may take place in the penstock of the hydroelectric power plants. Hence, the unsteady flow analysis is important to identify undesirable pressure variations and to take preventive actions toward guaranteeing safe operation of the power plant. Chief among these actions are the installation of a surge tank and relief valve, and the transient flow behavior in the presence of protective devices is investigated herein. The method of characteristics is employed to numerically solve the equations governing the transient flow through channels. Also, in order to better resolve the transient behavior, unsteady friction effects have been considered. Validation of the developed computational code is carried out through comparison of the computed transient pressures with those measured at Karun-III Hydropower Plant. According to the results obtained for MONJ Hydropower Station, when only one turbine is in operation, the surge tank decreases the pressure rise within the spiral case and the turbine overspeed by 22% and 6%, respectively. While the percentages associated with employing a proper surge relief valves are accordingly 12% and 14%. This study substantiates how surge relief valves can be used instead of an expensive surge tank to relieve the transient response.

Suggested Citation

  • Riasi, Alireza & Tazraei, Pedram, 2017. "Numerical analysis of the hydraulic transient response in the presence of surge tanks and relief valves," Renewable Energy, Elsevier, vol. 107(C), pages 138-146.
    • Handle: RePEc:eee:renene:v:107:y:2017:i:c:p:138-146
    DOI: 10.1016/j.renene.2017.01.046
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    References listed on IDEAS

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    1. Kendir, Tarik Efe & Ozdamar, Aydogan, 2013. "Numerical and experimental investigation of optimum surge tank forms in hydroelectric power plants," Renewable Energy, Elsevier, vol. 60(C), pages 323-331.
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    1. Mohammad Mahmoudi-Rad & Mohammad Najafzadeh, 2023. "Effects of Surge Tank Geometry on the Water Hammer Phenomenon: Numerical Investigation," Sustainability, MDPI, vol. 15(3), pages 1-19, January.
    2. Wuyi Wan & Boran Zhang, 2018. "Investigation of Water Hammer Protection in Water Supply Pipeline Systems Using an Intelligent Self-Controlled Surge Tank," Energies, MDPI, vol. 11(6), pages 1-16, June.
    3. Martínez-Lucas, Guillermo & Pérez-Díaz, Juan I. & Chazarra, Manuel & Sarasúa, José I. & Cavazzini, Giovanna & Pavesi, Giorgio & Ardizzon, Guido, 2019. "Risk of penstock fatigue in pumped-storage power plants operating with variable speed in pumping mode," Renewable Energy, Elsevier, vol. 133(C), pages 636-646.
    4. Guillermo Martínez-Lucas & José Ignacio Sarasúa & José Ángel Sánchez-Fernández, 2018. "Frequency Regulation of a Hybrid Wind–Hydro Power Plant in an Isolated Power System," Energies, MDPI, vol. 11(1), pages 1-25, January.
    5. Li, Huanhuan & Xu, Beibei & Arzaghi, Ehsan & Abbassi, Rouzbeh & Chen, Diyi & Aggidis, George A. & Zhang, Jingjing & Patelli, Edoardo, 2020. "Transient safety assessment and risk mitigation of a hydroelectric generation system," Energy, Elsevier, vol. 196(C).
    6. Lei, Liuwei & Li, Feng & Kheav, Kimleng & Jiang, Wei & Luo, Xingqi & Patelli, Edoardo & Xu, Beibei & Chen, Diyi, 2021. "A start-up optimization strategy of a hydroelectric generating system: From a symmetrical structure to asymmetric structure on diversion pipes," Renewable Energy, Elsevier, vol. 180(C), pages 1148-1165.
    7. Xu, Beibei & Zhang, Jingjing & Egusquiza, Mònica & Chen, Diyi & Li, Feng & Behrens, Paul & Egusquiza, Eduard, 2021. "A review of dynamic models and stability analysis for a hydro-turbine governing system," Renewable and Sustainable Energy Reviews, Elsevier, vol. 144(C).
    8. Gongcheng Liu & Xudi Qiu & Jiayi Ma & Diyi Chen & Xiao Liang, 2022. "Influence of Flexible Generation Mode on the Stability of Hydropower Generation System: Stability Assessment of Part-Load Operation," Energies, MDPI, vol. 15(11), pages 1-19, May.
    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.
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    11. Rezghi, Ali & Riasi, Alireza & Tazraei, Pedram, 2020. "Multi-objective optimization of hydraulic transient condition in a pump-turbine hydropower considering the wicket-gates closing law and the surge tank position," Renewable Energy, Elsevier, vol. 148(C), pages 478-491.
    12. Xu, Beibei & Chen, Diyi & Patelli, Edoardo & Shen, Haijun & Park, Jae-Hyun, 2019. "Mathematical model and parametric uncertainty analysis of a hydraulic generating system," Renewable Energy, Elsevier, vol. 136(C), pages 1217-1230.
    13. Wuyi Wan & Boran Zhang & Xiaoyi Chen & Jijian Lian, 2019. "Water Hammer Control Analysis of an Intelligent Surge Tank with Spring Self-Adaptive Auxiliary Control System," Energies, MDPI, vol. 12(13), pages 1-19, July.
    14. Yixuan Guo & Xiao Liang & Ziyu Niu & Zezhou Cao & Liuwei Lei & Hualin Xiong & Diyi Chen, 2021. "Vibration Characteristics of a Hydroelectric Generating System with Different Hydraulic-Mechanical-Electric Parameters in a Sudden Load Increasing Process," Energies, MDPI, vol. 14(21), pages 1-21, November.
    15. Xu, Beibei & Jun, Hong-Bae & Chen, Diyi & Li, Huanhuan & Zhang, Jingjing & Cavalcante Blanco, Claudio Jose & Shen, Haijun, 2019. "Stability analysis of a hydro-turbine governing system considering inner energy losses," Renewable Energy, Elsevier, vol. 134(C), pages 258-266.
    16. Li, Huanhuan & Xu, Beibei & Riasi, Alireza & Szulc, Przemyslaw & Chen, Diyi & M'zoughi, Fares & Skjelbred, Hans Ivar & Kong, Jiehong & Tazraei, Pedram, 2019. "Performance evaluation in enabling safety for a hydropower generation system," Renewable Energy, Elsevier, vol. 143(C), pages 1628-1642.
    17. Lan, Xinyao & Jin, Jiahui & Xu, Beibei & Chen, Diyi & Egusquiza, Mònica & Kim, Jin-Hyuk & Egusquiza, Eduard & Jafar, Nejadali & Xu, Lin & Kuang, Yuan, 2022. "Physical model test and parametric optimization of a hydroelectric generating system with a coaxial shaft surge tank," Renewable Energy, Elsevier, vol. 200(C), pages 880-899.
    18. 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.
    19. Ma, Weichao & Yan, Wenjie & Yang, Jiebin & He, Xianghui & Yang, Jiandong & Yang, Weijia, 2022. "Experimental and numerical investigation on head losses of a complex throttled surge tank for refined hydropower plant simulation," Renewable Energy, Elsevier, vol. 186(C), pages 264-279.

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