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The influence of hanging water droplets on discharge activity, application to high voltage insulators
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View: Figures


Image of FIG. 1.
FIG. 1.

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.

Image of FIG. 2.
FIG. 2.

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.

Image of FIG. 3.
FIG. 3.

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).

Image of FIG. 4.
FIG. 4.

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.

Image of FIG. 5.
FIG. 5.

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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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The influence of hanging water droplets on discharge activity, application to high voltage insulators