抽水蓄能机组双机甩负荷试验分析

抽水蓄能电站工况转换频繁,水力过渡过程关乎整个电站的安全运行和供电品质,一管双机甩负荷是大波动水力过渡过程,对其进行试验分析具有重要意义。为此,分析多个抽水蓄能电站一管双机甩负荷试验数据,统计了转速和蜗壳压力上升率范围,为以后制定相关标准和调节保证计算提供参考;并分析了某抽水蓄能电站一管双机甩50%、75%、100%负荷的试验结果,结果表明该电站转速和蜗壳压力上升率与其他统计电站相近,可为其他电站的类似试验提供参考。

Analysis of Double Load Rejection Tests of Pumped storage Power Station

The operating conditions of pumped storage power stations convert frequently. The research of hydraulic transition process is crucial. It is a matter of safe and steady operation and quality of power supply. Double load rejection tests are large fluctuation hydraulic transient process. So, it is important to carry out the research of double load rejection tests. This paper compared several tests data. The rise rates of rotational speed and spiral case pressure were statistically analyzed, which can provide reference for future formulation of standards and regulation guarantee calculation. This paper also analyzed the results of 50%, 75% and 100% double load rejection of a pumped storage power station. It can provide reference for other station to conduct similar tests.