直流局部放电干扰源研究  

Investigation in DC Partial Discharge Interference Sources

作　　者：杨涛[1] 王露[1] 陈楠[1] 李博[1] 党原[1] 

机构地区：[1]西安高压电器研究院有限责任公司,西安710077

出　　处：《高压电器》2012年第9期72-77,共6页High Voltage Apparatus

摘　　要：局部放电作为影响绝缘老化的主要原因之一,是评估电气设备绝缘性能,研究绝缘老化趋势的重要手段。为掌握直流下局部放电波形的特性,笔者结合直流换流阀试验,对悬浮电位、高压尖端放电、地尖端放电3种典型缺陷的直流局部放电典型干扰源进行模拟研究。在直流电压逐步升高的情况下,从放电脉冲的极性、放电脉冲的位置、放电脉冲的幅值、放电脉冲的根数4个方面对特征进行总结、归纳,为直流下缺陷类型的识别奠定了基础。Partial discharge is an important means for evaluating insulating property of electric equipment and investigating insulation aging. In this paper, the partial discharge interference sources induced by three typical defects, floating potential, high-voltage point discharge, and earth point discharge, are simulated to investigate the features of DC partial discharge waveforms by combining with DC thyristor valve test. The waveform features are induced from four aspects of polarity, phase, discharging impulse under increasing DC voltage for identifying the type of amplitude and root number defects under DC voltage.

关 键 词：直流 局部放电 特征图 

分 类 号：TM851[电气工程—高电压与绝缘技术]