发电机定子主绝缘老化特征的研究  

STUDY ON AGING CHARACTERISTICS OF STATOR INSULATION IN GENERATOR

作　　者：贾志东[1] 乐波[1] 张晓虹[1] 卢伟胜[1] 蒋雄伟[1] 李俭[1] 谢恒堃[1] 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,陕西省西安市710049

出　　处：《电网技术》2000年第4期7-11,共5页Power System Technology

基　　金：国家自然科学基金重点资助项目!项目批准号 :5 983 72 60

摘　　要：对环氧云母绝缘电机线棒进行了老化试验 ,在不同的老化阶段 ,测试了线棒的介质损耗角正切、电容、电流急增点等非破坏性参数和破坏性参数——剩余击穿电压。通过非破坏性参数的变化情况和非破坏性参数与破坏性参数的相关性 。Accelerated aging test to the epoxy/mica insulation of stator bars in generator is presented in this paper. The parameters of non destructive testing, such as dielectric loss factor, capacity and the voltage at which the charging current increases abruptly, are measured in the different aging stage. The destructive limit, namely residual breakdown voltage (BDV), is determined through the breakdown test. Finally the correlation factors between these non-destructive parameters and destructive parameter are analyzed, which is used to estimate aging characteristics of epoxy/mica stator insulation in generator.

关 键 词：环氧云母绝缘 老化 主绝缘 定子 发电机 

分 类 号：TM310.33[电气工程—电机]