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Polyethylene is commonly used as an insulator for AC power cables. However it is known to undergo chemical and physical change which can lead to dielectric breakdown. Despite almost eighty years of experimental characterization of its electrical properties, very little is known about the details of the electrical behaviour of this material at the molecular level. An understanding of the mechanisms...
Simulation model to investigate the statistical property of electrical breakdown is presented based on the field-assisted percolation model for dielectric breakdown, in which the disorder in morphology is expressed through randomly distributed trap barriers. In addition the effects of sample area and the presence of large defects are evaluated. Assuming that one simulation segment represents an actual...
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