한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)
- 한국전기전자재료학회 2006년도 하계학술대회 논문집 Vol.7
- /
- Pages.505-506
- /
- 2006
기중부분방전원 식별을 위한 광대역 부분방전신호의 측정 및 주성분분석기법의 적용
Application of Principle Component Analysis and Measurement of Ultra wideband PD signal for Identification of PD sources in Air
- Lee, K.W. (KRRI) ;
- Kim, M.Y. (KRRI) ;
- Park, D.W. (KRRI) ;
- Shim, J.B. (KTL) ;
- Chang, S.H. (KRRI)
- 발행 : 2006.06.22
초록
PD(partial discharge) occurred from variable PD sources in air may be the cause of breakdown in high voltage equipment which affect huge outage in power system. Identification and localization of PD sources is very important for engineer to cope with huge accident beforhand. PD phenomena can be detected by acoustic emission sensor or electromagnetic sensor like antenna. This paper has investigated the identification method using PCA(principal component analysis) for the PD signals from variable PD sources, for which the electric field distribution and PD inception voltages were simulated by using commercial FEM program. PD signals was detected by ultra wideband antenna. Their own features were extracted as the frequency coefficients transformed with FFT(fast fourier transform) and used to obtain independent pincipal components of each PD signals.
키워드