The vibration trouble occurred on turbo-generator set no.2 in Zhuhai Power Plant is comparatively complex.The vibration on shaft system of the unit

on bearing shoe

on stator of the generator

and on floor of 6.3 m elevation in the main building has been tested in an all-round way

the causes leading to vibration of unit being comprehensively analysed and inferentially diagnosed.It has found that the causes are:insufficient stiffness in direction of joint level between the stator of generator and the bed-plate

as well as partial resonance with the floor of 6.3 m elevation.For this

simple and feasible measures for elimination the vibration have been put forward.