In this paper, the influence of streaming electrification on the creeping discharge of an oil-paper insulation system has been investigated, using experimental models. Experimental results indicate that the initial creeping discharge voltage of the oil-paper insulation system decreases with oil flow rate. The creeping discharge path develops toward the oil entrance, and there are polarity and position effects on the creeping discharge under oil flowing conditions. Reasons for failure due to dendritic discharge on the surface of barrier boards in power transformers have been revealed in these experiments.
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Yang et al. (1997) studied this question.
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