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Theses

ETUDE DE LA GENERATION DES STREAMERS DANS L'HUILE MINERALE SOUS TENSION IMPULSIONNELLE ET ALTERNATIVE

Abstract : The objective of this thesis is to study streamer initiation in minerai oil under step and alternating voltage in various geometry and in the presence of sorne pollution (particles, water). This work brings a comprehension of the streamer initiation. The results obtained show the significant influence of the geometry and the impurities (cellulose particles, water) on th e streamer initiation. The inception fields remarkably decrease when the electrode radii are increased. This reduction explains the surface effect observed under impulse and ac voltage in very well filtered oil. An additional degradation exists when oil is polluted and subjected to ac voltage. The study carried out in semi-uniform geometry (between two planes with a trigging point) allows to simulate the conditions of streamer generation and propagation caused by surface irregularities or particles in uniform geometry.
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https://tel.archives-ouvertes.fr/tel-00783523
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Submitted on : Friday, February 1, 2013 - 11:12:19 AM
Last modification on : Thursday, November 19, 2020 - 1:00:28 PM
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  • HAL Id : tel-00783523, version 1

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Top Tran Van. ETUDE DE LA GENERATION DES STREAMERS DANS L'HUILE MINERALE SOUS TENSION IMPULSIONNELLE ET ALTERNATIVE. Energie électrique. Institut National Polytechnique de Grenoble - INPG, 1999. Français. ⟨tel-00783523⟩

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