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Optimization of The Superhydrophobic Insulation Longevity Covered With Water Drops Under DC Voltage

The electrical networks are confronted with several problems that lead to service disruption due to the pollution that is deposited in layer form and the persistence of water drops by the effect of moisture on hydrophobic insulators. Our experimental work aims to manufacture superhydrophobic insulation based on silicone and to control the evacuation of water droplets deposits covering the surface using a very suitable electrode profile in order to prevent the development of partial electrical discharges and/or flashover under DC voltage. The results from this experimental study show the expulsion mode of water drops out the surface requires a test voltage less than or equal to half that of its flashover. Furthermore, these results reveal that a deposit of a set of water drops on the superhydrophobic insulation, whatever their volume, their electrical conductivity, the superhydrophobicity of its surface is retained and its longevity is optimized.