Flashover model of arcing horn in transient simulation

The flashover performance of an arcing horn in a transmission line is important in lightning surge analysis. Many flashover models have been proposed for transient simulations, but they are only validated over a limited range of waveforms, which is very limited relative to what may be encountered in the field. This paper compares four flashover models of the arcing horn of a 220 kV transmission line insulator under standard lightning impulses and as installed in a twin-circuit, 220 kV transmission line. The results provide insight into appropriate models for simulating flashover behavior of the arcing horn in transmission line.