The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis of Partial Discharge Signal Using Wavelet Transform

웨이브렛 변환을 이용한 부분방전 신호의 분석

  • 이현동 (영남대 대학원 전기공학과) ;
  • 김충년 (영남대 대학원 전기공학과) ;
  • 박광서 (영남대 대학원 전기공학과) ;
  • 이광식 (영남대 전자정보공학부) ;
  • 이동인 (영남대 전자정보공학부)
  • Published : 2000.11.01
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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.

Keywords

References

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