| Title |
Steady State Analysis of Nozzle Ablation Under High Temperature and High Pressure Arc Plasma |
| Keywords |
arc plasma ; current interruption ; SF_ 6/ gas circuit breaker ; nozzle, ablation ; PTFE concentration |
| Abstract |
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. |