Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Partial Discharge Characteristics of Metallic Particles Under HVDC in SF6 Gas

SF6 가스 중 HVDC에서 금속 파티클의 부분방전 특성

  • Kim, Sun-Jae (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Jo, Hyang-Eun (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Wang, Guoming (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Yun, Min-Young (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Kil, Gyung-Suk (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University)
  • 김선재 (한국해양대학교 전기전자공학과) ;
  • 조향은 (한국해양대학교 전기전자공학과) ;
  • 왕국명 (한국해양대학교 전기전자공학과) ;
  • 윤민영 (한국해양대학교 전기전자공학과) ;
  • 길경석 (한국해양대학교 전기전자공학과)
  • Received : 2015.10.26
  • Accepted : 2015.11.19
  • Published : 2015.12.01
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Abstract

This paper dealt with the PD (partial discharge) characteristics produced by metallic particles presented in a gas insulated switchgear. Four types of metallic particles such as a ball, a trapezoid, a rectangle, and a twist were fabricated and placed in a PD cell filled with $SF_6$ gas. PD pulses were detected through a $50{\Omega}$ non-inductive resistor. Calibration was carried out according to IEC 60270 and the sensitivity was calculated as 4 mV/pC. Apparent charge, pulse count, DIV (discharge inception voltage), DEV (discharge extinction voltage), and TRPD (time resolved partial discharge) were analyzed. Among the metallic particle types, the twist frequently occurred PD pulse at the lowest DIV, while the rectangle showed the highest. DEV of the twist was about 2 times lower than that for the rectangle. Kurtosis of ball clustered at high value, and skewness of other three metallic particles distributed at low value. TRPD showed different distribution by metallic particle types.

Keywords

References

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