絶縁フィルムを貫通する雷インパルスアーク放電のガス温度分布推定

抄録

We investigated equivalent radii of penetration holes in insulating films in order to clarify that discharge diameter and gas temperature distribution shape of impulse arc discharge during penetrating insulating films. We fixed five insulating films between high voltage electrode and ground electrode, and calculated equivalent radii using penetration holes of insulating films with different melting points. As a result, it was found that from relationship between melting point and equivalent radius, temperature distribution shape of impulse arc discharge during penetration of insulating film was a convex shape with high temperature at the center and flat temperature at the outer peripheral part.