基于极化去极化的高压套管介电特性研究  

Analysis on Dielectric Property of HV Bushing Using Polarization and Depolarization Current Method

作　　者：杜清全[1] 蔡钢[2] 黄晓峰[1] 刘涛[2] 吴广宁[1] 刘曦[2] 

机构地区：[1]西南交通大学电气工程学院,成都610031 [2]四川电力科学研究院,成都610072

出　　处：《高压电器》2014年第7期38-43,共6页High Voltage Apparatus

摘　　要：笔者针对温度对套管的时域介电响应特性进行了研究。采用IEEE中对套管模型的测量数据,分析计算了极化去极化电流曲线(polarization and depolarization current,PDC)的介质响应函数。最后利用电荷差的(charge difference method,CDM)方法分析了测量数据并同常规测量计算进行对比,认为在测量3 000 s后就可以对直流电导率进行评价分析,对提高现场试验效率有很大的帮助。The time domain dielectric response characteristics of HV bushing is analyzed at different temperature. The time domain dielectric response function of HV bushing is calculated by using the measured data of bushing in the IEEE model. The measured data are analyzed by using the charge difference method（CDM）, and the result is compared with the one from conventional measurement and calculation. PDC test indicates that DC conductivity of HV bushing can be evaluated after 3 000 seconds of measurement.

关 键 词：套管 PDC CDM 平均电导率 

分 类 号：TM216.5[一般工业技术—材料科学与工程]