Arc temperature profile measurement and characteristic analysis on an SF ₆ high‐voltage CB

Dynamic climbing behavior and self-extinction mechanism of DC arc in a gradually changed air gap

“…The prerequisite for the above results is that air arc plasma can be considered in the local thermodynamic equilibrium state. Here, it is verified whether the are state is matched with the local thermodynamic equilibrium based on the McWhriter criteria [20,35], whose expression is as follows.…”

“…P. A. Bokhan investigated the current-voltage characteristics and mechanisms of electron emission from cold cathodes in a helium discharge, finding that the emission properties are determined mainly not by their material, but by the doping of cathodes with atoms of working gases and the purity of experimental conditions [19]. S. Bai proposed a method of using the optical fiber and spectrometer to measure the arc temperature profiles under the actual condition of the circuit breaker [20].…”