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

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

테라헤르츠파 분광법에 의한 절연유 특성 평가

Evaluation of Insulating Oil by Terahertz Time Domain Spectroscopy

  • 김근주 (한국전기연구원 THz파 전문연구랩) ;
  • 전석기 (한국전기연구원 THz파 전문연구랩) ;
  • 선종호 (한국전기연구원 전력설비진단그룹) ;
  • 진윤식 (한국전기연구원 THz파 전문연구랩)
  • 발행 : 2006.08.01
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초록

A new method on the evaluation of insulation oil was proposed. Terahertz time-domain spectroscopy (THz-TDS) was applied to investigate the properties of the insulating oil. For the diagnostics of oil degradation, three kinds of oils have been analyzed by THz-TDS. The degraded oil showed different optical and electrical constants compared with a new one. Generally, the power absorption coefficient, the refractive index, the dielectric constant and loss $tan{\delta}$ of the oil increase as the aging of insulating oil proceed. And the characteristics of two kind of insulation oil, 1-4 and 7-4, was compared in terahertz spectral region. Difference in refractive index and complex dielectric constant has been observed between the samples. The results of this study suggest that THz-TDS is a promising new means for evaluating degradation and identification of insulating oil.

키워드

참고문헌

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