| Title |
Analysis of Partial Discharge Signal Using Wavelet Transform |
| Authors |
이현동(Lee, Hyun-Dong) ; 김충년(Kim, Chung-Nyun) ; 박광서(Park, Kwang-Seo) ; 이광식(Lee, Kwang-Sik) ; 이동인(Lee, Dong-In) |
| Keywords |
partial discharge ; wavelet transform ; approximation ; detail |
| Abstract |
This paper deals with the multiresolution analysis of wavelet transform for partial discharge(PD). Test arrangement is based on the needle-plane electrode system and applied AC high voltage. The measured PD signal was decomposed into "approximations" and "details". The approximation are the high scale, low-frequency components of the PD signal. The details are the low-scale, high frequency components. The decomposition process are iterated to 3 level, with successive approximation being decomposed in turn, so that PD signal is broken down into many lower-resolution components. Through the procedure of signal wavelet transform, signal noise extraction and signal reconstruction, the signal is analyzed to determine the magnitude of PD. |