Title :
Estimation of Burn-Through Probability in SF6 Insulated Substations
Author :
Chu, F.Y. ; Ford, G.L. ; Law, C.K.
Author_Institution :
Research Division Ontario Hydro
fDate :
6/1/1982 12:00:00 AM
Abstract :
Enclosure burn-through in SF6 insulated substations is a rarely occurring event; however, in view of the possibly damaging effects to equipment and personnel, its probability of occurrence warrants a closer examination. This paper presents a model for estimating the likelihood of enclosure burn-through or pressure relief disc bursting during an in-service fault in SF6 substations. Results of a simulation show a 25% burn-through probability per fault in substations with the most probable fault currents in the 50 kA range. The probability of personnel being exposed to the hazardous arcing by-products is discussed.
Keywords :
Fault currents; Gas insulation; Geographic Information Systems; Manufacturing; North America; Personnel; Probability; Substations; Sulfur hexafluoride; Switchgear;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1982.317186