Study on the lightning impulse breakdown characteristics of gaseous insulation media for the design of a high voltage superconducting apparatus

摘要: Abstract In general, the current leads of high voltage superconducting apparatuses cooled by liquid nitrogen are exposed to gaseous insulation media. Therefore, investigation on electrical breakdown characteristics media should be performed develop electrically reliable power apparatuses. this study, lightning impulse tests conducted using sphere-to-plane electrode systems made stainless steel. Also, according various pressures performed. The experimental results show that under affected gap length between systems, size electrodes, and field utilization factors. From these results, design criteria estimate established. expected applicable for