IET Generation Transmission & Distribution · 2008 · 105 citations · 13 references
EngineeringElectrical EngineeringSystems EngineeringCritical Infrastructure ProtectionMaintenance EngineeringPower ElectronicsFailure AnalysisFailure CriteriaFailure Mode AnalysisFailure TheoriesPower System ReliabilityReliability ModelingCircuit Breaker ReliabilityComponent Reliability ModelingMaintenancePower System Fault AnalysisPower System Reliability AnalysisPower System Reliability ModelingProtection System ReliabilityReliability Data Analysis
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.
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