摘要
水泵水轮机无叶区是机组内部水力因素引起的压力脉动最大的部位,也是机组和厂房振动的主要激振源之一。本文以某抽水蓄能电站机组稳定性试验结果为基础,分析了机组内部压力脉动混频幅值随负荷的变化趋势,重点关注了无叶区压力脉动分频幅值随负荷的变化规律,为研究机组和厂房振动诱因提供一种思路。
Pressure fluctuation in the non-blade Area of a Pump-Turbine is the maxim pressure fluctuation caused by inner hydraulic facts, and is one of the sources exciting to vibration of unit and powerhouse. In this paper, based on the stability test results of a pumped-storage power station, the change trend of pressure fluctuation mixing amplitude according to unit output is discussed, focused on change rules of frequency division amplitude, one thought to study vibration of unit and powerhouse is presented.
出处
《大电机技术》
2017年第1期60-63,共4页
Large Electric Machine and Hydraulic Turbine
关键词
水泵水轮机
压力脉动
无叶区
pump-turbine
pressure fluctuation
non-blade area
