Abstract :
This article introduces a comprehensive survey on new trends in high-voltage (HV) power circuit breakers (CBs) technology. Applying the new puffer and the self-blast technologies, the ratings of SF6 CBs have reached upto 1,100 kV, 80 kA, and 50 GVA, which is the world´s largest gas insulated switchgear (GIS), with independent pole operation and utilizing the advantages of external composite insulators. Several new vacuum arc control technologies are discussed. New generations of controlled intelligent switching devices that implement new power electronic actuating devices are introduced. Finally, superconducting fault current limiters (SFCLs) are introduced. SFCLs have two main properties: current limitation capability and ultra high-speed operation. SFCLS could be a key technology for future power systems engineering
Keywords :
SF6 insulation; composite insulators; fault current limiters; gas insulated switchgear; power electronics; superconducting devices; vacuum arcs; vacuum circuit breakers; GIS; SF6; SFCL; external composite insulators; gas insulated switchgear; high-voltage power circuit breakers; intelligent switching devices; power electronic actuating devices; self-blast technologies; superconducting fault current limiters; vacuum arc control technologies; Circuit breakers; Fault current limiters; Gas insulation; Geographic Information Systems; Power electronics; Power generation; Power system faults; Switchgear; Vacuum arcs; Vacuum technology;
