大型水轮发电机在电网中的作用越来越大,检修工作也越来越重要。在发电机组检修的过程中必须根据实际故障状况制定对策,针对发电机组的常见振动故障,必须建立科学的故障监测和诊断系统。本文结合水轮发电机组的振动原因,提出了振动监测和故障诊断系统的设计方法。 Large hydroelectric generators in the role of the grid is more and more maintenance work is also more and more important. In the process of generator set maintenance, it is necessary to make countermeasures according to actual fault conditions. For the common vibration faults of generator set, a scientific fault monitoring and diagnosis system must be established. This paper presents the design method of vibration monitoring and fault diagnosis system based on the vibration of hydro-generator.