Title :
The effect of surface roughness on breakdown in SF6
Author_Institution :
The Technical University, Lyngby, Denmark
Abstract :
Electrode surface roughness can cause a large reduction of the threshold for break down in SF6insulated apparatus. This effect is discussed by applying the streamer theory of breakdown to the microscopic field regions associated with surface roughness. A quantitative relation is derived between the practical breakdown threshold and gas pressure times maximum surface roughness.
Keywords :
Avalanche breakdown; Electric breakdown; Electrodes; Electrons; Geometry; Insulation; Microscopy; Rough surfaces; Sulfur hexafluoride; Surface roughness;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/T-PAS.1975.32019
