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.
出处
《华东电力》
北大核心
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)~~
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
partial discharge
PD source
wide-band ultra high-frequency sensor
spectrum
power spectrum
joint detection
