| Title |
The Positive Bubble Effect and the Breakdown Characteristics in SF_6 and LN_2 |
| Authors |
이광식(Lee Kwang-Sik) ; 최은혁(Choi Eun-Hyuck) ; 박광서(Park Kwang-Seo) ; 김종환(Kim Jong-Whan) ; 임창호(Lim Chang-Ho) |
| Keywords |
Discharge ; Bubble ; Insulation ; Low Temperature |
| Abstract |
In this paper the experiments of breakdown characteristics by temperature change of SF_6 gas, SF_6 liquid (LSF_6) and N_2 liquid (LN_2) in model GIS(Gas Insulated Switchgear) were described. From the experiments results, the breakdown voltage of SF_6 increases with the drop of temperature and the increase of the inner pressure in model GIS. The ability of LSF_6 insulation is higher than high-pressurized SF_6 gas and LN_2. The breakdown characteristics of LSF_6 were produced by bubble formed evaporation of LSF_6 and bubble caused by high electric emission. It is considered in this paper that the results are fundamental data for electric insulation design of superconductor and cryogenic equipments machine교 which will be studied and developed in the future. |