CAJ | 학술논문

介绍了引起气体绝缘开关设备(GIS)局部放电的主要缺陷，分析了基于超声波法的 GIS 局部放电测试的原理、试验接线及注意事项，对部分变电站 GIS 设备进行了超声波局部放电测试。经测试结果分析表明，若周期峰值小于15 mV，应以跟踪监测为主；若大于15 mV，应考虑进行分合闸操作，再进行复测，如果信号消失，信号由动静触头接触不良引发的可能性较大，若分合闸不能消除信号，建议停电检查。
개소료인기기체절연개관설비(GIS)국부방전적주요결함，분석료기우초성파법적 GIS 국부방전측시적원리、시험접선급주의사항，대부분변전참 GIS 설비진행료초성파국부방전측시。경측시결과분석표명，약주기봉치소우15 mV，응이근종감측위주；약대우15 mV，응고필진행분합갑조작，재진행복측，여과신호소실，신호유동정촉두접촉불량인발적가능성교대，약분합갑불능소제신호，건의정전검사。
Introduction was made to the major defects causing partial discharge of gas insulated switchgear. Analysis was made to the principle of gas insulated switchgear (GIS) partial discharge testing based on the ultrasonic method, test connection, advertent items. Part of GIS equipment in subordinated substations was carried out partial discharge testing based on the ultrasonic. The testing results analysis shows that tracking and monitoring were given priority when the periodic peak value was less than 15 mV; breaking and closing were considered when the periodic peak value was more than 15 mV, and then repetition measurement was carried out. If the signals disappeared, it was more possible for the moving and fixed contacts to turn up bad contact. If the signals didn’t disappear, power cut and examine were suggested.