Title :
Failure Frequencies for High-Voltage Circuit Breakers, Disconnectors, Earthing Switches, Instrument Transformers, and Gas-Insulated Switchgear
Author_Institution :
SINTEF Energy Res., Trondheim, Norway
Abstract :
Failure frequencies for circuit breakers (CBs) (only single pressure SF6), disconnectors and earthing switches, instrument transformers, and gas-insulated switchgear (GIS) have been determined through a comprehensive worldwide utility survey. For CBs and GIS, where comparable results from earlier surveys exist, significant reductions in failure frequencies are observed.
Keywords :
circuit breakers; earthing; gas insulated switchgear; high-voltage engineering; instrument transformers; reliability; disconnectors; earthing switches; failure frequency; gas insulated switchgear; high-voltage circuit breakers; instrument transformers; Circuit breakers; Gas insulation; Grounding; Instrument transformers; Power system reliability; Reliability; High-voltage switchgear; instrument transformers; reliability;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2012.2220638