SF_6/N_2混合ガス中で三重点を有する複合電極の放電特性

概要

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This paper describes the discharge characteristics of a composite electrode with a triple junction at wave front of μ s pulse voltage in SF_6/N_2 mixed gas. The composite electrode was consisted of a sphere with a borosilicate glass on a sphere-plane configuration. In each polarity, the flashover voltage increased rapidly at a low mixture rate. As the mixture rate increase, the increase rate became small. Moreover, path of frashover shifted creeping path from sphere-plane path when the gas pressure and in the mixture rate. Then we investigated detailed process of the breakdown by using ultra-high speed camera. The point of observation is D=0% and D=3% on 0.3MPa in each polarity. As a result, the corona generated from triple junction disappeared once, and it appeared between the steel ball and glass again, finally the corona progressed the creeping path in D=3%.
兵庫県立大学の論文
2006-01-31