CAJ | 학술논문

针对一起1100 kV GIS开关投切后内置式特高频传感器的报警案例，利用特高频信号的传输特性和模式识别技术成功实现了故障定位，进而得出了特高频信号在不同气室间的衰减规律。跟踪分析故障气室特高频信号幅值和在线谱图信息，通过故障气室解体找到了放电点，验证了之前诊断分析的正确性，为特高频法在特高压GIS工程中的应用提供了有效例证。最后提出了特高频法在现场检测的几点建议。
침대일기1100 kV GIS개관투절후내치식특고빈전감기적보경안례，이용특고빈신호적전수특성화모식식별기술성공실현료고장정위，진이득출료특고빈신호재불동기실간적쇠감규률。근종분석고장기실특고빈신호폭치화재선보도신식，통과고장기실해체조도료방전점，험증료지전진단분석적정학성，위특고빈법재특고압GIS공정중적응용제공료유효예증。최후제출료특고빈법재현장검측적궤점건의。
The case that built-in type UHF sensor alarmed after 1 100 kV GIS circuit breaker switching is presented. The fault is located successfully based on the propagation characteristics and pattern recognition techniques of UHF signals, and then attenuation rule of UHF signals in different gas chambers is concluded. By tracking and analyzing the UHF signal amplitude and on-line frequency spectrogram information and de-tecting discharge point by faulty gas chamber disassembly, the above-mentioned diagnosis and analysis is proved correct, providing an effective example for application of UHF-based method in UHV GIS projects. In the final, the paper brings forward some suggestions on field detection of UHF-based method.