Upper Bearing Collar Reset Processing of Generator-Motor in a Pumped Storage Power Station
The vibration of upper guide bearing was unusually large during the stopping period after load rejection test of unit 2 in a pumped storage power station.By measuring the swing of upper bearing collar,it is determined that the reason for the unusually large vibration is the tilt of upper bearing collar.The upper bearing collar was successfully reset by means of shrinkage,and the problem of upper guide bearing unusually large vibration have been solved.Finally,the limiting measure was applied to the upper bearing collar,which effectively prevents the upper bearing collar from tilting again.
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