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Engineering    2017, Vol. 3 Issue (4) : 504 -511
Research |
Flow-Induced Instabilities in Pump-Turbines in China
Zhigang Zuo,Shuhong Liu()
State Key Laboratory of Hydro Science and Engineering, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China

The stability of pump-turbines is of great importance to the operation of pumped storage power (PSP) stations. Both hydraulic instabilities and operational instabilities have been reported in PSP stations in China. In order to provide a reference to the engineers and scientists working on pump-turbines, this paper summarizes the hydraulic instabilities and performance characteristics that promote the operational instabilities encountered in pump-turbine operations in China. Definitions, analytical methods, numerical and experimental studies, and main results are clarified. Precautions and countermeasures are also provided based on a literature review. The gaps between present studies and the need for engineering practice are pointed out.

Keywords Pump-turbines      Flow-induced instability      Pressure fluctuations      S-shaped characteristics      Positive slopes     
Corresponding Authors: Shuhong Liu   
Online First Date: 31 August 2017    Issue Date: 13 September 2017
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Zhigang Zuo
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Zhigang Zuo,Shuhong Liu. Flow-Induced Instabilities in Pump-Turbines in China[J]. Engineering, 2017, 3(4): 504 -511 .
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