摘要
分析了三峡左岸电站ALSTOM机组小开度振动的原因,通过对6号机组快速关机工况下的模型试验,验证了导叶小开度时负流量的存在,阐述了负流量对ALSTOM机组振动的影响,这对三峡上游蓄水175m后机组稳定运行具有重要的意义。
This paper analyses the factors causing the vibration of the ALSTOM units on the left bank of the Three Gorges hydropower station at a small guide-vane opening. The measured data of the model test of unit NO.6 in the emergent shut-down case indicates that the negative discharge exists indeed. The influence of the negative discharge on vibration of ALSTOM units is discussed, which is important to ensure the stability of ALSTOM units after the water level of the Three Gorges reservoir reaches 175m.
出处
《大电机技术》
北大核心
2009年第6期49-52,共4页
Large Electric Machine and Hydraulic Turbine
关键词
导叶
小开度
振动
负流量
guide-vane
small guide-vane opening
vibration
negative discharge
