交流および直流電圧印加時のSF_6およびCO_2を含るSF_6混合ガスのPD時系列特性

概要

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This paper deals with partial discharge (PD) time-sequential properties of SF6/N2/CO2 ternary gas mixture as well as SF6 and SF6/N2 gas mixture under ac and positive dc voltage applications. The measurements were carried out by changing the gas pressure up to 0.6MPa and applied voltage with the N-shape characteristics of breakdown voltage vs gas pressure for each tested gas considered. We obtained experimental results of gas pressure dependence of maximum peak value of PD current pulse as well as relationship between the time interval of PD pulses and the peak value of PD pulse. We discuss the mechanism of increase in breakdown voltage by adding CO2 into SF6/N2 gas mixtures in terms of change of PD type from streamer to leader discharge.
社団法人電気学会の論文
2004-02-01