Article
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Surface Discharges and Flashover Modelling of Solid Insulators in Gases
Mohammed El-Amine Slama
Version 1
: Received: 25 October 2019 / Approved: 27 October 2019 / Online: 27 October 2019 (04:12:23 CET)
How to cite: Slama, M.E.; Beroual, A.; Haddad, A.(. Surface Discharges and Flashover Modelling of Solid Insulators in Gases. Preprints 2019, 2019100294 Slama, M.E.; Beroual, A.; Haddad, A.(. Surface Discharges and Flashover Modelling of Solid Insulators in Gases. Preprints 2019, 2019100294
Abstract
The aim of this paper is the presentation of an analytical model of insulator flashover and its application for air at atmospheric pressure and pressurized SF6. After a review of the main existing models in air and compressed gases, we develop a relationship of flashover voltage on the basis of an electrical equivalent circuit and the thermal properties of the discharge. The model includes the discharge resistance, the insulator impedance, and the gas interface impedance. The application of this model to a cylindrical resin-epoxy insulators in air medium and SF6 gas with different pressures gives results close to the experimental measurements.
Subject Areas
surface discharge; flashover; gas; modelling; pressure; thermal properties
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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