A steady wire-to-plane electric discharge has been modeled in a prolate spheroidal coordinate system with the wire shape taken as a hyperboloid of revolution. A set of continuum conservation equations for the charged particle densities and temperatures together with Poisson’s equation for the self-consistent electric potential describe the steady electric discharge process. These equations have...

In this paper it is shown that the Mayr-type arc models can be used to describe the arc behavior before current zero exactly. Based on this analysis the different types of ‘modified’ Mayr arc models can be explained. As a result of the theory, an improved Mayr-type arc model with a constant time parameter and a cooling power which is dependent on the electrical power input is introduced and use...

The grounding electrode line is an important part of the Ultra high voltage direct current (UHVDC) transmission system. It acts as channel to conduct unbalanced and current.The arcing horn consists a pair electrodes installed in parallel at both ends insulator string, which provides discharge for fault by air gap protect insulators. In this paper, distributions were studied when was struck ligh...