Title :
Circuit breaker failure data and reliability modelling
Author :
Lindquist, T.M. ; Bertling, Lina ; Eriksson, Robert
Author_Institution :
Dept. of Electr. Eng., R. Inst. of Technol., Stockholm
fDate :
11/1/2008 12:00:00 AM
Abstract :
The results from an extensive study of SF6 and minimum-oil circuit breaker failures in the Swedish and Finnish transmission systems are presented. The study includes 1546 breakers with a total operating history of 16 384 years. In the study, a detailed analysis of a specific SF6 type of breaker revealed which parts caused the failures and an estimation of their hazard rates was made. A model of complete reliability for this type of breaker is presented, illustrated by presenting the operating and maintenance history of a shunt reactor breaker in the Swedish transmission system.
Keywords :
SF6 insulation; maintenance engineering; oil circuit breakers; power transmission faults; power transmission reliability; Finnish transmission systems; SF6 circuit breaker failures; Swedish transmission systems; circuit breaker failure data; circuit breaker maintenance; circuit breaker reliability; minimum-oil circuit breaker failures; shunt reactor;
Journal_Title :
Generation, Transmission & Distribution, IET
DOI :
10.1049/iet-gtd:20080127