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Etude des phénomènes électro-thermiques dans l'appareillage haute tension

Abstract : Electricity is produced by power stations and is transported throughout the electric-power transmission at long distances with high voltage apparatus. The GIS (Gas Insulated Switchgear) is widely used switchgear. The electric insulation is ensured by the gas SF6. Security IEC norms impose temperature rises not to be exceeded during GIS operating. It is important to know and control the electromagnetic and thermal phenomenons which generate temperature rises. The switchgear design could then be faster and more precise, leading to only one successful temperature rise test. Solutions to reduce temperatures could also be found. The temperature rise reduction is crucial as it allow a higher current flowing through the GIS and an increase of its efficiency. The word achieved during this thesis presents an analysis of electro-thermal phenomenons in GIS and, more precisely, in busbars. It leads to the determination of the parameters influencing temperature rises and of the heat transfers proportion which is assessed and discussed. A numerical modelization is carried out to examine the temperature rises induced by the current flow in busbars.
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Nesrine Rebzani. Etude des phénomènes électro-thermiques dans l'appareillage haute tension. Energie électrique. Université de Grenoble, 2014. Français. ⟨NNT : 2014GRENI056⟩. ⟨tel-01133617⟩



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