A physical arc model for the simulation of current zero behavior of high-voltage circuit breakers

The equations and parameters of a physical arc model which can be used to compare test circuits with respect to the thermal and dielectric interrupting interval of SF/sub 6/ circuit breakers are presented. An example calculation with the alternative transient program (ATP) shows the interruption of a terminal fault with a four-parameter TRV. The sensitivity of the arc model in the thermal interrupting interval is demonstrated by comparing artificial line circuits.<
>