大型发电机定子线棒及绕组绝缘气隙局部放电试验方法分析  

Analysis on Test Methods of Partial Discharge of Isolating Air Gap of Large Generator Stator Bar and Winding

作　　者：魏松[1] 陈阳[1] WEI Song;CHEN Yang(Harbin Electric Machinery Company Limited,Harbin 150040,China)

机构地区：[1]哈尔滨电机厂有限责任公司,黑龙江哈尔滨150040

出　　处：《上海大中型电机》2021年第1期52-54,60,共4页Shanghai Medium and Large Electrical Machines

摘　　要：总结分析检验大型发电机定子线棒及绕组绝缘气隙局部放电的试验方法,介绍电流急增点、离线局部放电、介质损耗因数增量和TVA电晕试验的原理和方法,分析定子线棒内屏蔽技术与气隙放电试验的关系,可作为检验线棒及绕组绝缘质量及老化状态评估的重要参考。This paper has summarized and analyzed the test methods of partial discharge of isolating air gap of large generator stator bar and winding,introduced the principles and methods of current gain point,off-line partial discharge,dielectric loss factor increment and TVA corona test,and analyzed the relation between the internal shielding technique of stator bar and the air-gap discharge test,which can be used as an important reference for bar and winding insulation quality testing and aging evaluation.

关 键 词：定子线棒 定子绕组 气隙 局部放电 

分 类 号：TM306[电气工程—电机]