22.9kV 배전선로용 LP애자의 초음파 열화 진단 패턴 분석

When the partial discharge is occurred in the insulator, they involve a variety of symptoms, such as heat, vibration, sound, electromagnetic wave, or etc. However, it is very difficult to detect the pattern of partial discharge. Because, the partial discharge is very sensitive from the surrounding environment. For this reason, existing diagnostic methods had limitations to get exact observation results. Therefore, we have performed this diagnosis of an insulator using ultrasonic wave signals to overcome the limitation from the past. But, this ultrasonic wave diagnosis is often time consuming. So, this diagnosis method, a vehicle was used for fast detection of ultrasonic wave signals. In this paper, we analyzed the degradation pattern of a LP insulator using ultrasonic wave signals during the vehicle keeps moving.