HU Tao, LIU Hai-feng, DU Da-quan. Online Detection of Partial Discharge for a 550 kV Tank Breaker[J]. High voltageapparatus, 2008, (4): 378-380.DOI:
550kV罐式断路器局部放电在线检测
摘要
局部放电信号反映了断路器内部绝缘缺陷。为监测局部放电信号
笔者采用了超声法和超高频法对断路器进行试验
两种方法均检测到在线断路器内部的局部放电信号。由于超声波和电磁波特性上的差异
超声法能进行放电点的定位;超高频法能发现初期缺陷的低能放电
且抗干扰能力强。
Abstract
The partial discharge signal indicates fault inside a circuit breaker.The ultrasonic measurement and the ultra-high frequency measurement were used to detect the PD signal in a online-breaker.It is found that the ultrasonic measurement can locate fault position
and the ultra-high frequency measurement can detect low energy PD signal of initial fault with a perfect anti-interference capability.