Surface Discharges and Flashover Modelling of Solid Insulators in Gases

Mohammed El Amine Slama, Abderrahmane Beroual and Abderrahmane (Manu) Haddad
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Mohammed El Amine Slama: Advanced High Voltage Engineering Centre, School of Engineering. Cardiff University, Queen’s Buildings The Parade, Cardiff, Wales CF24 3AA, UK
Abderrahmane Beroual: Laboratoire Ampère, University of Lyon, 36 Avenue Guy de Collongues, 69130 Ecully, France
Abderrahmane (Manu) Haddad: Advanced High Voltage Engineering Centre, School of Engineering. Cardiff University, Queen’s Buildings The Parade, Cardiff, Wales CF24 3AA, UK

Energies, 2020, vol. 13, issue 3, 1-14

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 SF 6 (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 SF 6 gas with different pressures gives results close to the experimental measurements.

Keywords: surface discharge; flashover; gas; modelling; pressure; thermal properties (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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