S-shaped characteristics on the performance curves of pump-turbines in turbine mode – A review

S-shaped characteristics on the performance curves of pump-turbines in turbine mode – A review
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水轮机工况下水泵水轮机性能曲线的S形特征——综述

DOI:
10.1016/j.rser.2015.12.312
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发表时间:
2016-07
影响因子:
15.9
通讯作者:
Yulin Wu
Yulin Wu
中科院分区:
工程技术1区
文献类型:
--
作者:
Zhigang Zuo;Honggang Fan;Shuhong Liu;Yulin Wu

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在涡轮机模式下,水泵水轮机性能曲线上的S形特征会加剧相关瞬态过程中的不稳定性问题,例如,涡轮机启动时与电网同步困难、涡轮机甩负荷时性能不稳定等。本文介绍并讨论了各研究者对S形特性的相关研究。研究内容包括系统不稳定性分析、水泵水轮机流动机理的试验和数值研究、影响机组几何参数和运行参数的研究、改善S形特性和相关瞬态过程不稳定问题的预防措施和对策。
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.
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