| Title |
A Study on the Predictive Diagnosis of the Cable Joint Using Ultrasonic Technique |
| Authors |
Hee-Ro Kwak ; Dong-Zoon Lee ; Dong-Wha Park |
| Abstract |
In this paper, the diagnosis technique was proposed by measuring and analyzing ultrasonic signals caused by partial discharge on the interface of cable joint. The measured ultrasonic signal was filtered by wavelet transform, and then the dominant signal of filtered signal was analyzed by fast fourier transform(FFT). As a result, it was confirmed that different characteristics were obtained with the moisture and the metal powder on the interface of cable joint and with voltage increment. |