New Breakdown Electric Field Calculation for SF6 High Voltage Circuit Breaker Applications

作     者：Ph.ROBIN-JOUAN M.YOUSFI 

作者机构：AREVA T & D High Voltage Switchgear Research Centre130 rue L.BLUM 69611 VilleurbanneFrance University of ToulouseLAPLACE-UMR 5213 CNRSUPS118 Route de Narbonne31062 Toulouse Cedex 9France 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2007年第9卷第6期

页      面：690-694页

核心收录：

学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

主　　题：breakdown electric field hot dissociated SF6 high voltage gas-circuit-breaker 

摘      要：The critical electric fields of hot SF6 are calculated including both electron and ion kinetics in wide ranges of temperature and pressure, namely from 300 K up to 4000 K and 2 atmospheres up to 32 atmospheres respectively. Based on solving a multi-term electron Boltz- mann equation the calculations use improved electron-gas collision cross sections for twelve SF6 dissociation products with a particular emphasis on the electron-vibrating molecule interactions. The ion kinetics is also considered and its role on the critical field becomes non negligible as the temperature is above 2000 K. These critical fields are then used in hydrodynamics simulations which correctly predict the circuit breaker behaviours observed in the case of breaking tests.