Location of Partial Discharge in Power Transformer Using Ultrasonic Signal's Characteristic with Medium.

매질에 따른 초음파 신호의 특성을 이용한 변압기내 부분방전 위치 추정

This paper describes an efficient location detection algorithm for a partial discharge(PD) source in the transformer. The algorithm is previously proposed is not suitable for PD source detection because ultrasonic signal is diminished through the inner structure. In this paper, the proposal algorithm find PD source using geometry method and 3th sensor on the one side of transformer without diminution of ultrasonic signal. The proposed algorithm demonstrates the effectiveness and validity on model transformer.