Surface discharges and flashover modelling of solid insulators in gases

Slama, Mohammed El Amine, Beroual, Abderrahmane and Haddad, Abderrahmane (Manu) ORCID: https://orcid.org/0000-0003-4153-6146 2020. Surface discharges and flashover modelling of solid insulators in gases. Energies 13 (3) , 591. 10.3390/en13030591

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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 (Sulfur Hexafluoride). After a review of the main existing models in air and compressed gases, a relationship of flashover voltage based on an electrical equivalent circuit and the thermal properties of the discharge is developed. The model includes the discharge resistance, the insulator impedance and the gas interface impedance. The application of this model to a cylindrical resin-epoxy insulator in air medium and SF6 gas with different pressures gives results close to the experimental measurements.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	MDPI
ISSN:	1996-1073
Date of First Compliant Deposit:	20 April 2020
Date of Acceptance:	9 December 2019
Last Modified:	06 Jul 2023 17:06
URI:	https://orca.cardiff.ac.uk/id/eprint/131082

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