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Article Dans Une Revue Plasma Science and Technology Année : 2007

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

Ph. Robin-Jouan
  • Fonction : Auteur
Mohammed Yousfi

Résumé

The critical electric fields of hot SF6are 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.
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Dates et versions

hal-03828426 , version 1 (25-10-2022)

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  • HAL Id : hal-03828426 , version 1

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Ph. Robin-Jouan, Mohammed Yousfi. New Breakdown Electric Field Calculation for SF6 High Voltage Circuit Breaker Applications. Plasma Science and Technology, 2007, 9 (6), pp.690-694. ⟨hal-03828426⟩
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