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

The Korean Institute of Electrical Engineers (대한전기학회)
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The Detection Characteristics of the Partial Discharge Pluses with Folded Dipole Type Sensors in the Oil Transformers

유입 변압기에서 폴디드 다이폴형 센서의 부분방전 펄스 검출 특성

  • 김광화 (한국전기연구원 산업전기연구단) ;
  • 이상화 (한국전기연구원 산업전기연구단) ;
  • 선종호 (한국전기연구원 산업전기연구단) ;
  • 강동식 (한국전기연구원 산업전기연구단) ;
  • 김재철 (숭실대학교)
  • Published : 2006.10.01
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Abstract

This paper describes that the distribution of electromagnetic field occurred by PD(Partial Discharge) pulse was calculated with simulation program and characteristics of calibration and PD pulses measured with folded dipole types sensors were analyzed. As the distribution of electromagnetic field in simulation was very random the wide band measuring methods were good. Therefore three folded dipole antenna types sensors which had different their widths were designed and made. The signal according to direction and distance between sensor and pulse source in these sensor was measured and the spectrum of surface PD were acquired in the experiment of model transformer. In this result the characteristics of sensor which had middle width was better than others and the main spectrum of PD signals in surface discharge were existed in around 220MHz, 320MHz and from 450MHz to 750MHz.

Keywords

References

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