Research on PD Detecting in GIS[J]. High voltageapparatus, 1992, (2): 16-21.DOI:
GIS内部局部放电检测的研究
摘要
根据测量系统等效电路的传递函数的幅频特性图
优化设计了CT线圈测量系统和外被电极测量系统
CT线圈测量系统有一个较好的频率选择特性
有一个可以减少外界干扰的谐振频率
当第一个谐振点频率约为100kHz时
CT线圈测量系统的测量灵敏度为2~10pC
外被电极测量系统的灵敏度为15~30pC
应用这两种测量系统
对充有SF
6
或SF
6
/N
2
或SF
6
/空气混合气体且带有固定微粒或自由微粒的同轴电极系统
获得了一些检测局部放电的结果。
Abstract
Based on amplitude-frequency curve of the equivalent circuit transmission
two measuring systems are designed for optimization. The measuring system of CT coil has the frequency performance to reduce outside interference. In SF6 SF6/N2 and SF6/Air mixtures with fixed or free particles
some measurement results for FD in a coaxial electrode systemare presented with above two high sensitive systems in this paper.