摘要
分析了GIS中局部放电测量用超高频宽带和窄带两种方法的优缺点。实验室中模拟GIS常见 3种故障(母线上有固定金属微粒 ,盆式绝缘子表面有污秽和内部有气泡 )的超高频宽带法和窄带法局部放电测量表明 ,窄带法得到的同种故障时域波形很相似 ,而不同故障则差别较大 ,有明显的可分性。
The UHF broad-band and narrow-band methods for GIS partial discharge detection were studied in this paper. The advantage and disadvantage of these two methods are also analyzed. Three common defects (protrusion on busbar, barrier surface contamination, voids in barrier) in GIS are simulated in laboratory, and the PD caused by these defects are detected by UHF broad-band method and narrow-band method respectively. The time domain waveforms of the same defect gotten by the UHF narrow-band method have similar distribution characteristic and those of different defects have different ones, which can be used to recognize the type of PD. So it is pointed out that the UHF narrow-band method is more convenient for pattern recognition.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2004年第10期19-20,共2页
High Voltage Engineering
