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

Author

Choi, Hyo-Sang ; Hyun, Ok-Bae ; Kim, Hye-Rim ; Park, Kwon-Bae

Author_Institution

Korea Electr. Power Res. Inst., Taejon, South Korea

Volume

12

Issue

3

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

1833

Lastpage

1838

Abstract

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 YBa₂Cu₃O 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

Keywords

barium compounds; fault current limiters; superconducting switches; superconducting thin films; superconducting transformers; yttrium compounds; YBa₂Cu₃O₇; current redistribution; electrically isolated circuits; hybrid type superconducting fault current limiter; independent quenches; mutual flux linkage; power dissipation imbalance; resistive superconducting switches; secondary windings; transformers; Couplings; Current limiters; Fault current limiters; Fault currents; Power dissipation; Switches; Switching circuits; Transformers; Voltage; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.801816

Filename

1029171