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

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

The Characteristics of Insulation with Temperature Variations of $SF_{6}$

$SF_{6}$ 가스의 온도변화에 따른 절연특성

  • Published : 2003.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, insulations characteristics by temperature changes(＋50～-50[$^{\circ}C$]) of $SF_{6}$ gas in the experimental chamber were studied. From this result, at the low temperature, the breakdown voltage was increased with a drop of temperature and an increase of inner pressure in GIS. In addition the ability of insulation of liquid $SF_{6}$ was higher than that of the highly pressurized $SF_{6}$ gas. That is, with progress of low temperature, the main reason of breakdown was not liquefaction of $SF_{6}$ but rapid decrease of inner pressure. This study will come in greatly handy for the insulation design of GIS in a hard cold region

Keywords

References

  1. Landry, M. et al. 'Dielectric withstand and breaking capacity of $SF_6$ circuit breakers at low temperatures' Power Delivery, IEEE Transactions on, pp. 1029-1035 July 1988
  2. Gong Guoli et al. 'The influence of $SF_6$ and $SF_6/N_2$ dissociating products on the electrical performance of several insulating varnishes' Electrical Insulating Materials, pp. 495-497. 1995 https://doi.org/10.1109/ISEIM.1995.496617
  3. T.Ueda et al, 'Discrimination of Partial Discharge Electromagnetic Signal in $SF_6$ Gas from External Noise Using Phase Gate Control Method', IEEE International Symposium on Electrical Insulation, pp. 117-120, 1996
  4. C.Beyer et al. 'Influence Reactive SFx Gases on Electrode Surfaces after Electrical Discharge under $SF_6$ Atmosphere'. IEEE Trans. pp. 234-240, 2000 https://doi.org/10.1109/94.841815
  5. 이광식 외 4명, '온도변화에 따른 $SF_6$ 가스의 절연특성', 대한전기학회 하계학술대회 논문집. pp. 1662-1664. 2002