| Title |
The Characteristics of Insulation with Temperature Variations of SF_{6} |
| Authors |
이광식 ; 박광서 ; 박경태 ; 김이국 ; 박창기 |
| Keywords |
GIS ; liquid SF_{6} ; breakdown voltage ; insulation ; low temperature |
| Abstract |
In this paper, insulations characteristics by temperature changes(＋50～-50[°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 |