Steady State Analysis of Nozzle Ablation Under High Temperature and High Pressure Arc Plasma

고온ㆍ고압 아크 플라즈마 하에서의 정상상태 노즐용삭 해석 기술

  • 이병윤 (한국전기연구원 신전력기기그룹) ;
  • 송기동 (한국전기연구원 신전력기기그룹) ;
  • 정진교 (한국전기연구원 신전력기기그룹) ;
  • 박경엽 (한국전기연구원 신전력기기그룹)
  • Published : 2003.09.01


In this paper, physical phenomena which are related to the high temperature and high pressure arc plasma generated during the fault current interruption by SF6 gas circuit breakers are reviewed. In particular, in order to analyze nozzle ablation induced by the heats transferred to the surface of the poly-tetrafluoroethylene(PTFE) nozzle through arc radiation, a governing equation for the calculation of PTFE concentration is added to the governing equations for SF6 arc Plasma analysis. The proposed method is applied to the steady state analysis of $SF_6$ arc plasma generated by direct current taking account of the nozzle ablation and the results are presented.


arc plasma;current interruption;SF$_{}$ 6/ gas circuit breaker;nozzle, ablation;PTFE concentration


  1. Khokan C. Paul, Tadahiro Sakuta, Takeshi Takashima, 'Transport and Thermodynamic Properties of SF6 Gas Contaminated by PTFE Reinforced with A12O3 and BN Particles', IEEE Trans. on Plasma Science, Vol. 25, No. 4, August 1997 pp. 786-798
  2. J. D. Yan, K. I. Nuttall and M. T. C. Fang, 'A comparative study of turbulence models for SF6 arcs in a supersonic nozzle', J. Phys. D: Appl. Phys. 32(1999) pp.1401-1406
  3. J.D. Yan, J.L.Zhang, A.B. Murphy, W.B.Hall, M.T.C.Fang, 'Arc Behavior in the Mixture of SF6 and PTFE Vapour in an AUTO-EXPANSION Circuit Breaker', Proceedings of the XIII International Conference on Gas Discharges and their Applications, 2000, pp.58-61
  4. 'ガス遮斷器のユニット大容量化ヘの要求とその基本技術', 일본전기학회기술보고, 제497호
  5. M. Sakaki외 3인, 'GISの遮斷器性能技術', 明電時報, 通卷232號, 1993, No.5, pp.13-24
  6. '大容量遮斷器の特殊遮斷條件', 일본전기학회기술보고,(II부) 제388호
  7. K. Ragaller, 'Current Interruption in High-Voltage Networks', 1978, Plenum Press, New York, pp.29-65
  8. H.M. Ryan & G.R. Jones, 'SF6 Switchgear', Peter Peregrinus Ltd., London, United Kingdom, 1989
  9. 이병윤, 송기동, 박경엽, '초고압 가스차단부의 유부하 압력상승계산', 대한전기학회 전기기기연구회 합동춘계 학술대회 논문집, 1999, pp.52-54
  10. 이병윤, 송기동, 박경엽, '초고압 가스차단부의 아크해석', 방전/플라즈마 춘계학술대회,2000, pp.64-67
  11. 이병윤, 송기동, 박경엽, 신영준, '복합소호방식 가스차단기의 대전류 차단특성 해석', 대한전기학회 하계학술대회 국책연구기관 특별 Session 논문집, 2000, pp. 37-40
  12. 일본전기학회기술보고(II부) no.388 大容量遮斷器の特殊遮斷條件