Modelling of the AC Breakdown Voltage of Point- Plane Air Gaps with Insulating Barrier

Abstract

<p class="EVAbstract">High voltage device dimensioning requires the prediction of the withstand voltage for test conditions like impulses, surges and AC voltage. There is a large need of designer to have reliable design criteria and well-defined simulation procedure for device development. This parametric study is based on the methodology of experimental designs. This method allowed us to propose a mathematical polynomial model. The objective of this paper is to study the discharge phenomena for a point –plane air interval with insulating barrier between them. Firstly on experimental study of a laboratory setup that we designed to carry out the influence of parameters (geometrical) involved in the process of breakdown. The distance between electrodes and different parameters of the barrier such as its position between electrodes dimension and its holes is studied . The barrier acts as a geometrical obstacle against the direct propagation of discharge. Secondly, using results obtained by the experimental setup , we have experiments design methodology of technique to predict the breakdown threshold voltage.</p>

Electrical discharge reproduction in rod-barrier-plane system

“…Nevertheless, the authors did not dwell on the arc shape obtained and the number of channels that can appear during the discharge as well as the possibility of formation of multiple arcs. Modeling and numerical simulation, an essential complement to experimental investigations, play an important part in the analysis of electrical discharge phenomena as described in [8], [10], [11], [13], [20], [21], [23], [32].…”