Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Properties of PD Pulses accompanying with Electrical Tree in LDPE

LDPE에서 전기트리에 수반된 부분방전 펄스의 특성

  • Park, Y.G. (Dept. of Elect. Engineering, Chungbuk Univ) ;
  • Bae, M.H. (Dept. of Elect. Engineering, Chungbuk Univ) ;
  • Kang, S.H. (Dept. of Elect. Engineering, Chungbuk Univ) ;
  • Lim, K.J. (Dept. of Elect. Engineering, Chungbuk Univ) ;
  • Park, D.H. (Dept. of Elect. Material Engineering, Wonguang Univ)
  • 박영국 (충북대학교 전기공학과) ;
  • 배민호 (충북대학교 전기공학과) ;
  • 강성화 (충북대학교 전기공학과) ;
  • 임기조 (충북대학교 전기공학과) ;
  • 박대희 (원광대학교 전기재료공학과)
  • Published : 1997.07.21
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Abstract

Property of insulation of electric machine is severely affected by process of electrical tree growing. Partial discharges(PD) have been used to determine degradation of insulations. In this paper, PD quantities detected and analyzed are PD magnitudes, repetition rates, phase angle distribution of PD pulses, and wavelet transformation. The wavelet transformation is an extended method of fourier transformation. The fourier transformation is a powerful tool for signal analysis, but it can't include informations for time. However the wavelet transformation analysis can include on the informations of time and frequencies at the same time. This paper discusses correlation between process of electrical tree growing and characteristics of PD in LDPE specimens.

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