Switching properties of a hybrid type superconducting fault current limiter using YBCO stripes

Presents investigations of a hybrid type superconducting fault current limiter (SFCL), which consists of transformers and resistive superconducting switches. The secondary windings of the transformer were separated into several electrically isolated circuits and linked inductively with each other by...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2002-09, Vol.12 (3), p.1833-1838
Main Authors: CHOI, Hyo-Sang, HYUN, Ok-Bae, KIM, Hye-Rim, PARK, Kwon-Bae
Format: Article
Language:English
Subjects:
Applied sciences
Connection and protection apparatus
COPPER OXIDE
Couplings
Current limiters
Disturbances. Regulation. Protection
ELECTRICAL CONDUCTIVITY
Electrical engineering. Electrical power engineering
Electrical power engineering
Electronics
Exact sciences and technology
Fault current limiters
Fault currents
Flux
FLUXES
Power dissipation
Power networks and lines
QUENCHING MECHANISMS
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Superconducting devices
SUPERCONDUCTIVITY
SUPERCONDUCTORS
Switches
Switching
Switching circuits
Transformers
Voltage
YBCO superconductors
Yttrium barium copper oxide
YTTRIUM OXIDE
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Description
Summary:Presents investigations of a hybrid type superconducting fault current limiter (SFCL), which consists of transformers and resistive superconducting switches. The secondary windings of the transformer were separated into several electrically isolated circuits and linked inductively with each other by mutual flux, each of which has a superconducting current limiting unit of YBa/sub 2/Cu/sub 3/O/sub 7/ (YBCO) stripes as a switch. Simple connection in series of the SFCL switches tends to produce ill-timed switching because of power dissipation imbalance between SFCL units. Both electrical isolation and mutual flux linkage of the switches provides a solution to power dissipation imbalance, inducing simultaneous switching by independent quenches and current redistribution of the YBCO films. This design enables increase of voltage ratings of SFCL with given YBCO stripes.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2002.801816