Investigation of the Breakdown Thresholds Air Gap from AC Voltage by Central Composite Face and Double Centered Composite Method

Abstract

When an electrically insulating material is exposed to a high voltage, it abruptly transforms into an electrical conductor and allows current to flow through it. This process is known as dielectric breakdown. A controlled current flow is caused by an excessive electric field intensity in the region where the current flow is referred to as an electric breakdown. As a result, electrons will accelerate and collide with other molecules or atoms with enough force to release additional electrons from the affected molecules or atoms. The current work examines the Central Composite Face Method for modelling the AC breakdown voltage in point-to-plane air gaps with barriers in section one. The investigation was done for varying sizes and positions. The barrier in use was positioned between the electrodes vertically. The research outcomes presented in this study were obtained at Biskra University's High Voltage Laboratory, focusing on the dielectric strength of air in the peak-barrier system. In section two, a novel method based on the double-centred composite plane model was applied for the varying radius of tip and electrode distance curvate. A comparison was made between the experimental results and the results of numerical simulations. The computed and experimental results exhibited a high level of agreement.