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Analysis and Treatment of Over-standard of Over-critical Velocity Vibration Caused by Turn-to-turn Shortage of Rotor
Pages: 32-33,58
Year: Issue:  1
Journal: Guangxi Electric Power

Abstract: 分析和处理了某厂的2号发电机转子过一阶临界转速振动超标问题.采用转子加励磁电流降速、两极电压法、RSO、转子解体等方法确定转子存在匝间短路.转子匝间短路产生的不平衡磁拉力和转子过临界共振是导致振动超标的主要原因,粘贴转子匝间绝缘垫条的胶水不能满足燃机的日启停要求,从而导致垫条位移,是转子发生匝间短路的根本原因.
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