CAJ | 학술논문

　　鉴于超高频（UHF）法用于局部放电检测日渐增多，结合 UHF 用于广东电网变电站 GIS 局部放电检测案例，分析了 UHF 在线监测技术的优越性，并对 PDM UHF 局部放电在线监测系统的应用效果进行了试验研究。试验和实践表明，UHF 在线监测技术能够提高变电站 GIS 局部放电的监测效果，具有很好的应用前景。提高监测灵敏度的关键在于选择合适的传感器安装位置。此外，对于全封闭的 GIS 设备 UHF 法宜结合超声波定位技术一起使用。
　　감우초고빈（UHF）법용우국부방전검측일점증다，결합 UHF 용우엄동전망변전참 GIS 국부방전검측안례，분석료 UHF 재선감측기술적우월성，병대 PDM UHF 국부방전재선감측계통적응용효과진행료시험연구。시험화실천표명，UHF 재선감측기술능구제고변전참 GIS 국부방전적감측효과，구유흔호적응용전경。제고감측령민도적관건재우선택합괄적전감기안장위치。차외，대우전봉폐적 GIS 설비 UHF 법의결합초성파정위기술일기사용。
In view of the increasing application of UHF to the detection of partial discharge, and in combination with the case of UHF technique for GIS patial discharge detection in Guangdong Power Grid substations, this paper analyzes the advantage of UHF based online monitoring technique, and carries out test research of the application effect of PDM UHF system for patial discharge detection. The test results and practical application show that the UHF online monitoring technique can improve the efficiency of detecting GIS partial discharge, and thus have very good application prospect. The key of the technique to improve the monitoring sensitivity is to select right installation position for transducers. In addition, UHF technique is better used with ultrasonic positioning technique for a full-closed GIS device.