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

The Korean Institute of Electrical Engineers (대한전기학회)
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Partial Discharge Phenomena with $SF_{6}$ Gas Pressures in Insulation Consisted of Insulation Paper and $SF_{6}$ Gas(II)

$SF_{6}$가스와 절연지의 절연계에서 가스압력에 따른 부분방전 현상(II)

  • 선종호 (한국전기연구소 신전력기기그룹) ;
  • 김광화 (한국전기연구소 신전력기기그룹) ;
  • 박정후 (부산대 공대 전자전기통신공학부) ;
  • 조정수 (부산대 공대 전자전기통신공학부)
  • Published : 2002.09.01
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Abstract

The $SF_{6}$ gas insulated power equipments have the insulation systems which are composed of $SF_{6}$ gas and insulation paper. It is repored that their insulation abilities are influenced by the $SF_{6}$ gas gaps in those insulation systems and gas pressures. This paper describes partial discharge phenomena with $SF_{6}$ gas pressures in insulation system of $SF_{6}$ gas-insulation paper Specimens of $SF_{6}$ gas-insulation paper were prepared and aramid paper was used as insulation paper. Partial discharge inception voltages(PDIV) and breakdown voltages for the existence of $SF_{6}$ gas gaps were measured by short term tests with gas pressures. Also, average PD quantities and pulse counts, life times of each specimens were calculated from the results of long term aging tests with gas pressures. It was found that the $SF_{6}$ gas gaps decrease increasing rates of PDIV and brealdown voltages according to gas pressure increase and the insulation breakdown caused by the smaller PD quantities than 1[pC] at the high gas pressure of 300kPa is due to the increase of energy density with increase of gas pressure.

Keywords

References

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