A proposal of new operating procedure of transformer type fault current limiter

Author

Shirai, Y. ; Taguchi, M. ; Shiotsu, M. ; Hatta, H. ; Muroya, S. ; Nitta, T.

Author_Institution

Dept. of Energy Sci. & Technol., Kyoto Univ., Japan

Volume

12

Issue

1

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

885

Lastpage

889

Abstract

Recovery time of a superconducting fault current limiters (SCFCLs) of a transformer type is very short, because the fault current is limited by the inductance of the primary coil and the amount of energy dissipation in the secondary superconducting wire is small. The temperature of the secondary winding of the SCFCLs decreases even in the current limiting operation. It was pointed out that the SCFCL in the current limiting mode may recover to the waiting mode by shunting the current for a certain time. Recovery characteristics by FCL-short-circuit was studied experimentally. New operating procedure based on the recovery by FCL-short-circuit is proposed. Required FCL-short time for successful recovery was measured for various conditions. The availability of the proposed operating procedure was investigated using a one-machine infinite bus system with parallel transmission line including 3-phase SCFCL unit.

Keywords

fault current limiters; short-circuit currents; superconducting devices; transformers; current limiting operation; energy dissipation; inductance; one machine infinite bus system; operating procedure; primary coil; recovery characteristics; secondary superconducting wire; three-phase superconducting fault current limiter; Current limiters; Energy dissipation; Fault current limiters; Fault currents; Inductance; Proposals; Superconducting coils; Superconducting filaments and wires; Superconducting transmission lines; Temperature;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2002.1018542

Filename

1018542