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

The Korean Institute of Electrical Engineers (대한전기학회)
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The Frequency Spectrum Characteristics of the Radiated Electromagnetic Waves during Positive DC Discharge in Liquid Nitrogen

액체질소중 정극성 직류방전시 방사전자파의 주파수 스펙트럼 특성

  • 박광서 (영남대 전기전자공학부) ;
  • 신호영 (영남대 전기전자공학부) ;
  • 최병주 (서라벌대 전기전자산계열) ;
  • 최상태 (경주대 컴퓨터 전기공학부) ;
  • 김기채 (영남대 전기전자공학부) ;
  • 이광식 (영남대 전기전자공학부) ;
  • 이동인 (영남대 전기전자공학부)
  • Published : 1999.09.01
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Abstract

In this study, a relationship between DC discharge and the radiated electromagnetic waves is investigated by measuring electromagnetic waves using a biconical antenna and a spectrum analyzer. The characteristics of frequency spectrum ofthe radiated electromagnetic waves was measured at the atmospheric pressure in Liquid Nitrogen $(LN_2)$ during partial discharges in nonuniform and uniform electric field depend on positive DC power. From this experiment results, it was confirmed that when partial discharge was produced in Liquid Nitrogen and Air, the signal of partial discharge was detected by this experiment and the analysis method. It is considered thatthese results obtained from this investigation may be used as fundamental data for diagnosis and prediction of insulation on the equipments ultra-high voltage, superconducting and cryogenic applications.

Keywords

References

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