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Communication Dans Un Congrès Année : 2013

Electro-thermal model of DC flashover discharge of Polluted insulator

Résumé

This paper is aimed at the presentation of electro-thermal mathematical model for the calculation of flashover critical voltage (Vcri) and critical current (Icri) of polluted insulator. The used model integrates a particular solution of Elenbaas-Heller equation that has been proposed by Frank-Kamenetski. It also takes into account the pollution resistance and the temperature of the discharge. Different types of electrolytes are also investigated. The Icri and Vcri computed using the relationships we established are found in a good accordance with the experimental ones and the temperatures of the discharge channel deduced from this model are closer to those reported in literature. It also appears from this study that the most important components of the discharge column are water vapour and air is a good approximation; the transfer of metal ions does not have any significant influence.
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Dates et versions

hal-00921844 , version 1 (24-05-2019)

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  • HAL Id : hal-00921844 , version 1

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Mohamed El-Amine Slama, Abderrahmane Beroual, Hocine Hadi. Electro-thermal model of DC flashover discharge of Polluted insulator. ISH, Aug 2013, Séoul, South Korea. pp.OE3-02. ⟨hal-00921844⟩
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