雷电冲击电压下局部放电检测方法有效性研究  

Validation Study of Partial Discharge Detection Method Under Lightning Impulse Voltage

作　　者：鄢阳[1] 张连星[1] 

机构地区：[1]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074

出　　处：《电工电气》2016年第4期46-48,62,共4页Electrotechnics Electric

摘　　要：为了研究冲击电压下局部放电现象,搭建了冲击电压发生装置。以油纸绝缘气隙模型为试验对象,通过超声波法、高频电流法和超高频法对雷电冲击电压波形下的局部放电信号进行测量,列出典型波形进行对比分析。试验结果表明,高频电流法能有效提取局部放电脉冲,为进一步研究冲击电压下局部放电特征和机理提供参考。In order to research the partial discharge（PD） phenomena under impulse voltage（IV）, a device of IV has been set up. Taking the air gap of oil-paper insulation model as testing object, PD pulses signal under Lightning IV was detected by AE, HFCT and UHF. The typical waveforms were listed for analyzing. The testing results show that HFCT can effectively extract the PD pulses, which could play a very important role for further studying PD characteristic and mechanism under IV.

关 键 词：冲击电压 局部放电 高频电流法 超声波法 超高频法 

分 类 号：TM855[电气工程—高电压与绝缘技术]