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Etude de l'optimisation des isolants d'un point de vue diélectrique pour les contraintes du GIS

Abstract : In gas insulated switchgears (GIS), high voltage electrodes are supported by solid insulators. The reduction of the size of the equipment for cost considerations, impacts directly on the insulator and a careful optimization becomes necessary. A triple junction (TJ) exists at the interface between metal, insulating solid, and gas. In this sensitive area, partial discharges may appear, triggered by the presence of high voltage. Also, a further degradation of insulation performance can occur if solid particles are present in that zone. The accumulation of electric charge on the surface of the insulator can also reduce the system's dielectric strength when applying high voltage. These three points represent the starting point of this study that characterizes the multitude of complex phenomena that occur in the presence of high voltage.
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Submitted on : Wednesday, April 13, 2011 - 9:48:34 AM
Last modification on : Thursday, November 19, 2020 - 1:00:28 PM
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  • HAL Id : tel-00585494, version 1

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Lucian Caliap. Etude de l'optimisation des isolants d'un point de vue diélectrique pour les contraintes du GIS. Sciences de l'ingénieur [physics]. Université de Grenoble, 2010. Français. ⟨tel-00585494⟩

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