Abstract
The surface of insulators accumulates charge during subject to high voltage stresses electrically.The surface charging causes deteriorations of electrical performance and durability of high voltage insulators in gas. In this paper, we describe a result of visual analysis of electric fields with accumulation charge on complex insulator surface to clear the effect of surface charging on the dielectric strength. Moreover, the accumulated surface charge on insulators is estimated by flow patterns obtained from axisymmetric three dimensional fluid flow mappers with fixed sand-bed.
