多种宽带超高频传感器在变压器的局部放电联合检测研究  

Transformer Partial Discharge Joint Detection with Multi-type Wide-band UHF Sensors

作　　者：朱琪[1] 王友臣[1] 陆云才 朱超杰[1] 尹毅[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240 [2]江苏省电力试验研究院有限公司,南京211103

出　　处：《华东电力》2013年第5期1014-1018,共5页East China Electric Power

基　　金：国家电网公司科技项目(2012310031001392)~~

摘　　要：在110 kV高压变压器上设置9个法兰手孔,并且安装了3种类型的超高频传感器,分别为盘锥天线、平面等角螺旋天线和阿基米德螺线型天线传感器。设计并制作了悬浮放电,尖端放电,沿面放电与气隙放电4种人工放电源,利用多种传感器多个位置的联合检测进行了实验研究。对不同传感器获得的不同放电信号采用离散傅立叶变换进行处理,分析其频谱与功率谱。This paper set nine flange hand-holes in the 110 kV power transformer, installed three different types of ul- tra high-frequency sensors （UHF） , namely, discone antenna, planar equiangular spiral antenna and Arehimedean spiral antenna sensors. Four artificial discharge sources, including suspended discharge, needle-plate discharge, sur- face discharge and air-gap discharge, were designed and made to study the joint detection with multi-type UHF sen- sors. PD signals obtained from different UHF sensors were processed using Discrete Fouriei＂ Transform （DFT） meth- od, then their frequency spectrum and power spectrum were analyzed. Finally, the results are expounded.

关 键 词：局部放电 局部放电源 宽带超高频传感器 频谱 功率谱 联合检测 

分 类 号：TM41[电气工程—电器]