Comprehensive hydraulic performance improvement in a pump-turbine: An experimental investigation

被引:6
|
作者
Qin, Yonglin [1 ]
Li, Deyou [1 ]
Wang, Hongjie [1 ]
Liu, Zhansheng [1 ]
Wei, Xianzhu [2 ]
Wang, Xiaohang [2 ]
Yang, Weibin [2 ]
机构
[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Inst Large Elect Machinery, State Key Lab Hydropower Equipment, Harbin 150040, Peoples R China
基金
中国国家自然科学基金;
关键词
Pump turbine; High -pressure side; Hump characteristic; S characteristic; Pressure fluctuation; SECONDARY FLOWS; DESIGN; OPTIMIZATION; SUPPRESSION; RUNNER;
D O I
10.1016/j.energy.2023.128550
中图分类号
O414.1 [热力学];
学科分类号
摘要
Pumped storage power plants, which is known as only large-scale energy management equipment, plays a vital important role in energy field. Hump characteristic and S characteristic are two classical unsteady hydraulic characteristics when pump-turbine operating at turbine mode and pump mode, respectively. It has been found that these two characteristics are both strongly related to the complex vortex evolution process in vaneless region while only few papers focus on the elimination mechanism of them. In present paper, a scaled runner with optimized high-pressure side (HPS) is designed and manufactured based on multi-objective optimization process arming at eliminating unsteady characteristic, i.e. hump characteristic and S characteristic, while maintaining efficiency characteristic unchanged. Thereafter, hydraulic experiments are conducted to investigate the impact of HPS geometry on hydraulic performance (efficiency, hump margin, S margin and pressure fluctuation) of object pump turbine. The experimental results show that compared with the original runner, the weighted average efficiency for pump mode increases by 0.1% while the weighted average efficiency for turbine mode decreases by 0.1%. Moreover, the S margin increases from 76.7 m to 87.2 m and the S2 unsteady region is largely increased. The hump margin decreases a little while it can recover to the original level through increasing 0.6% of the original ratio scale. Moreover, the runner with optimized HPS can effectively reduce the pressure fluctuation amplitude in vaneless region up to 33.3% and 21.4% for turbine mode and pump mode, respectively.
引用
收藏
页数:10
相关论文
共 50 条
  • [21] The Influence of Pump-Turbine Specific Speed on Hydraulic Transient Processes
    Giljen, Zdravko
    Nedeljkovic, Milos
    Cheng, Yongguang
    STROJNISKI VESTNIK-JOURNAL OF MECHANICAL ENGINEERING, 2024, 70 (5-6): : 231 - 246
  • [22] Effect of Seal Locations of Pump-Turbine on Axial Hydraulic Trust
    Sun, Huifang
    Lv, Yue
    Ni, Jinbing
    Jiang, Xianyu
    Wang, Zhengwei
    JOURNAL OF MARINE SCIENCE AND ENGINEERING, 2021, 9 (06)
  • [23] 3D inverse design and performance investigation of pump-turbine runner
    Zhu, Baoshan, 1600, Chinese Society of Agricultural Machinery (45):
  • [24] Experimental and Numerical Analysis of Performance Discontinuity of a Pump-Turbine under Pumping Mode
    Zhang, X.
    Burgstaller, R.
    Lai, X.
    Gehrer, A.
    Kefalas, A.
    Pang, Y.
    28TH IAHR SYMPOSIUM ON HYDRAULIC MACHINERY AND SYSTEMS (IAHR2016), PTS 1-12, 2016, 49
  • [25] Effects of the Splitter Blade on the Performance of a Pump-Turbine in Pump Mode
    Li, Guidong
    Wang, Yang
    Cao, Puyu
    Zhang, Jinfeng
    Mao, Jieyun
    MATHEMATICAL PROBLEMS IN ENGINEERING, 2018, 2018
  • [26] Experimental and Numerical Investigation of Rotor-Stator Interaction in a Large Prototype Pump-Turbine in Turbine Mode
    Yang, Haixia
    He, Qilian
    Huang, Xingxing
    Yang, Mengqi
    Bi, Huili
    Wang, Zhengwei
    ENERGIES, 2022, 15 (15)
  • [27] Influence of the initial working condition on the hydraulic performance of the pump-turbine during runaway transient scenario
    Chen Q.
    Zhang X.
    He S.
    Shuili Xuebao/Journal of Hydraulic Engineering, 2020, 51 (07): : 858 - 868
  • [28] Simultaneous efficiency improvement of pump and turbine modes for a counter-rotating type pump-turbine
    Kim, Jin-Woo
    Suh, Jun-Won
    Choi, Young-Seok
    Lee, Kyoung-Yong
    Kim, Joon-Hyung
    Kanemoto, Toshiaki
    Kim, Jin-Hyuk
    ADVANCES IN MECHANICAL ENGINEERING, 2016, 8 (11) : 1 - 14
  • [29] Experimental investigation of vortex control with an axial jet in the draft tube of a model pump-turbine
    Kirschner, O.
    Schmidt, H.
    Ruprecht, A.
    Mader, R.
    Meusburger, P.
    25TH IAHR SYMPOSIUM ON HYDRAULIC MACHINERY AND SYSTEMS, 2010, 12
  • [30] Effects of Pump-turbine S-shaped Characteristics on Transient Behaviours: Experimental Investigation
    Zeng, Wei
    Yang, Jiandong
    Hu, Jinhong
    Tang, Renbo
    HYPERBOLE SYMPOSIUM 2017 (HYDROPOWER PLANTS PERFORMANCE AND FLEXIBLE OPERATION TOWARDS LEAN INTEGRATION OF NEW RENEWABLE ENERGIES), 2017, 813