Title :
The influence of irradiation and applied DC sweeping voltage on standard lightning impulse breakdown voltage of an SF6 insulated system
Author :
Chagas, F.A. ; Kuffel, E. ; Siodla, K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada
Abstract :
An electrode arrangement in compressed SF6 was studied to verify its applicability as a precise voltage chopping device under standard lightning impulse for testing purposes. The effect of irradiation of the chopping gap and the application of a low DC sweeping voltage on the gap breakdown voltage dispersion under a standard lightning impulse was also studied. The results obtained show that the effect of irradiation and the DC sweeping voltage for the configuration and pressure tested was practically negligible, leaving the electrode conditioning as the most important factor to be taken into account when considering the utilization of this electrode arrangement as a chopping gap for standard lightning impulse chopping at the crest
Keywords :
electric breakdown of gases; gaseous insulation; impulse testing; insulation testing; radiation effects; sulphur compounds; transients; SF6 insulated system; applied DC sweeping voltage; breakdown voltage dispersion; chopping gap; compressed gas insulation; effect of irradiation; electrode conditioning; precise voltage chopping device; standard lightning impulse breakdown voltage; Breakdown voltage; Electrodes; Geographic Information Systems; Impulse testing; Insulation; Insulators; Lightning; Optical fiber testing; Performance evaluation; Pollution measurement;
Conference_Titel :
Electrical Insulation, Conference Record of the 1992 IEEE International Symposium on
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-0649-X
DOI :
10.1109/ELINSL.1992.246992
