摘要
分析了变压器中局部放电激发的超高频电磁波在油 -隔板复合绝缘中的传播特性 ,讨论了变压器箱体对电磁波传播的影响 ,实验室研究结果表明 ,超高频局放电磁波在油 -隔板复合绝缘中传播时会产生一定的衰减 ,但对电磁波的接收影响不大 ;变压器箱体可引起电磁波的严重衰减 ,大大降低检测灵敏度 。
The propagation characteristic of E M wave emitted by PD in oil paper composite insulation of transformers is investigated in this paper, and the effect of transformer tank on wave propagation is also discussed. The experiments have been done in the lab. Results show that E M wave propagated in oil paper insulation attenuates a little. The transformer tank results in serious attenuation of E M wave. In practical PD detection, the sensor should be installed inside transformer tank.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2002年第12期26-28,共3页
High Voltage Engineering
关键词
局部放电
超高频电磁波
传播特性
电力变压器
隔板
绝缘结构
transformer ultra high frequency PD detection E M wave propagation characteristic attenuation
