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Communication Dans Un Congrès Année : 2011

Fractal analysis of creeping discharge propagating over pressboard immersed in mineral and vegetable oils

Abderrahmane Beroual
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Viet Hung Dang
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Résumé

The paper is aimed at the fractal analysis of the real (i.e., observed experimentally) creeping discharge patterns propagating over pressboard immersed in mineral and vegetable rape-seed oils, under lightning impulse voltages, using a pointplane electrode arrangement. By using the box counting method, we show that the discharge patterns present a fractal dimension D which depends on the thickness of pressboard (e) and the kind of oil; D decreases when e increases. The value of the density of branches increases when the thickness of pressboard decreases. D is generally higher in mineral oil than in vegetable rape-seed oil. This dependency on the thickness and nature of oil reveals the existence of a relation between the fractal dimension and the physical parameters.
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Dates et versions

hal-00742495 , version 1 (16-10-2012)

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Abderrahmane Beroual, Viet Hung Dang. Fractal analysis of creeping discharge propagating over pressboard immersed in mineral and vegetable oils. CEIDP, Oct 2011, Cancun, Mexico. pp.501 - 504, ⟨10.1109/CEIDP.2011.6232704⟩. ⟨hal-00742495⟩
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