On-line Detect ion and A nalysis of the Deterio rated 500 kV MOA
黄松波, 黄 涛, 区伟斌, 赵卫民
(广东省广电集团有限公司佛山供电分公司, 佛山528000)
摘 要 带电测试发现一起500 kV MOA 泄漏电流增大,通过红外热成像检测到明显的热缺陷红外图谱, 停电检查试验验证了带电检测结果。解体后的MOA 试验发现缺陷原因为阀片劣化。
Abstract The on-line detection of a deterio rated 500 kV MOA by leakage current measurement and infrared measurement are described. By the test, dissection and analysis, the reason that the non-linear resisto r of the MOA is deterio rated is found.
关键词 交流无间隙金属氧化物避雷器 带电测试 交流 泄漏电流 红外检测
Key words MOA on-line dectect ion AC leakage current infrared measure
附件:
500kV MOA劣化的带电测试及原因分析.pdf