Arc-Nozzle Interaction Modeling in SF_6 Puffer Circuit Breakers

摘要

A hydrodynamic model for electrical arc modeling, which takes into account Joule heating, radiation, Lorentz forces, arc-wall interactions and real gas effect, was applied to study circuit breakers. The industrial application deals with a SF_6 puffer circuit breaker. In this kind of breaker, the interaction between the PTFE nozzle and the electrical arc modifies significantly the flows. Some comparisons between experiments and computataions are proposed and the numericla results are discussed.