S-shaped characteristics on the performance curves of pump-turbines in turbine mode - A review
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- 作者：Zhigang Zuo ; Honggang Fan ; Shuhong Liu ; liushuhong@mail.tsinghua.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Yulin Wu
- 关键词：Pump-turbines ; S-shaped characteristics ; Instability
- 刊名：Renewable and Sustainable Energy Reviews
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：60
- 期：Complete
- 页码：836-851
- 全文大小：2931 K
文摘
S-shaped characteristics on the performance curves of pump-turbines in turbine mode promote instability problems in associated transient processes, e.g., difficulties in synchronizing with power grid in turbine start-ups, unstable performance in turbine load rejections, etc. The present paper presents and discusses relative studies on the S-shaped characteristics, which have been carried out by various investigators. Studies include system instability analysis, experimental and numerical investigations on the flow mechanism of pump-turbines, studies on the influencing geometric and operating parameters of the unit, and precautions and countermeasures to improve the S-shaped characteristics and instability problems in associated transient processes.