PRESSURE AND TRACTIVE STRESS IN GAS FILLED CAVITY IN INSULATIONDURING PARTIAL DISCHARGE ACTIVITY

Karol Marton - Mojmír Kollár - Terézia Gargušová

   The paper deals with the analysis of mechanical stress and the shape deformation of the gas filed cavities in high voltage liquid-insulation medium (oil) in combined paper-oil insulation. It takes into consideration the electro-physical phenomena occurring in high electric fields during the partial discharge activity in the defective areas of the insulation.

Keywords: high electric field, electric pressure and tractive stress, partial discharge, high voltage insulation

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