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Dynamic characteristics and Electric field distribution on Hydrophobic Contaminated Surface with Water Droplets Existing under AC Voltage Application

【摘要】:正 Nowadays silicone rubber (SIR) materials are widely used in outdoor insulation to replace glass and ceramic. The ability of hydrophobicity migration is the unique property of SIR, which means the contamination layer deposited on the surface of SIR can acquire the hydrophobicity from SIR. And moreover, based on the results in present study, it is found that there is obvious difference between the hydrophobic state of SIR and that of hydrophobic contamination layer covered on SIR for several days. Present paper focuses on this difference, which lead to various dynamic characteristic and flashover phenomenon on them. With the compare of phenomena and computation of electric field and distribution (EFD), it is found that these different phenomena and computation results are mainly caused by different hydrophobic states of the surfaces and different steady states of water droplets existing on the surfaces.

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