振动是影响水轮发电机组正常运行和危害机组寿命的主要故障。要清除机组振动故障 ,必须寻找引起机组振动的原因。本文主要介绍如何依据诱发机组振动的某些特征 ,捕捉其振动原因。为简化问题 ,不考虑引起机组振动诸因素间的相互影响 ,但对分析机组振动的主要原因 ,仍有较好的参考作用 Vibration is the main fault affecting the normal operation of hydro-generating set and endangering the life of the generating set. To clear the unit vibration failure, we must find the cause of the unit vibration. This paper mainly describes how to capture the vibration of the unit based on certain characteristics of the induced vibration. In order to simplify the problem and not to consider the interaction between the factors that cause unit vibration, it is still a good reference for analyzing the main causes of unit vibration