Superconducting fault current limiter development

Author

Ito, D. ; Tsurunaga, K. ; Yoneda, E.S. ; Sugiyama, Y. ; Hara, T. ; Okaniwa, K. ; Hoshino, H. ; Yamamoto, T.

Author_Institution

Toshiba Corp., Kawasaki, Japan

Volume

27

Issue

2

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

2345

Lastpage

2348

Abstract

The authors have developed and tested a 400-V 100-A-class fault current limiter wound with AC superconducting wire with ultrafine NbTi filaments. The limiter consists of noninductively wound superconducting trigger coils and a superconducting limiting coil which acts as a reactor. Excessive fault currents initiate quenching in the trigger coils and these currents, which have flown in trigger coils in nonfault conditions, are commutated from the trigger coils to the limiting coil. In an experiment, a fault current level was successfully limited to 120 A with a limiter whose terminal voltage at the limiting condition was 420 V

Keywords

coils; composite superconductors; fault currents; limiters; niobium alloys; superconducting magnets; titanium alloys; 120 A; 420 V; AC superconducting wire; fault current limiter; limiting coil; noninductively wound superconducting trigger coils; quenching; reactor; superconducting limiting coil; ultrafine NbTi filaments; Fault current limiters; Fault currents; Inductors; Niobium compounds; Superconducting coils; Superconducting filaments and wires; Testing; Titanium compounds; Voltage; Wounds;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.133688

Filename

133688