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Schematic representation of the experimental configurations used to study the corona discharge and the flash over voltage between two electrodes and the effect of water droplets on the discharge activity.
The representative pathways which lead to flashover between two metallic electrodes which have water droplets attached to them. Images (a)–(g) represent one possible discharge path and images (a)–(e) correspond to another common succession of events which lead to flashover.
The average and standard deviation that correspond to partial discharge (Bpd and Cpd) and flash over events (A, B, C, D, and E). The results were obtained for the systems presented in Figs. 1(A)–1(E).
Representative pathways that lead to flashover between the sheds of ceramic insulators. Images (a)–(g) represent a frequent discharge path and images (a), (h), and (g) correspond to another common pathway. The method of connecting the HV electrode just above the upper shed and the ground electrode to the lower shed simulates the pollution layers which can create conductive paths.
The average and standard deviation of voltage values for the partial discharge and flash over events between the sheds of the ceramic insulators in presence and in the absence of water droplets.
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