发电机定子线棒振动故障诊断  

Vibration Fault Diagnosis of Generator Stator Coil

作　　者：唐贵基[1] 向玲[1] 杜永祚[1] 

机构地区：[1]华北电力大学机械工程系,保定071003

出　　处：《振动．测试与诊断》2001年第2期139-142,共4页Journal of Vibration,Measurement & Diagnosis

摘　　要：利用锤击激振法进行了线棒结构动特性测试 ,进行了线棒二倍频的振动故障诊断。线棒重新绑扎后 ,其结构特性得到了很好的改善。实验表明 。Excessive vibration of the stator coil of a turbogenerator will seriously affect the normal operation of a thermal power station. In this work, the dynamic properties of the coil structure are measured by using hammer excitation. Results show that the coil structure has its modal frequencies in close vicinity to operating and double operating frequencies of the generator, which constitutes the basic reason for the excessive vibration of the coil. After the coil was reinforced, its modal properties and vibration in operation have been greatly improved. The work presented in the paper indicates that it is quite important to check the modal frequencies of the coil structure after its reinforcement during a general overhaul.

关 键 词：发电机 故障诊断 定子线棒 二倍频 谐振 发电厂 

分 类 号：TM307[电气工程—电机] TM621.3