Analysis of degradation in AC superconducting cables

Author

Torii, S. ; Akita, S. ; Ishikawa, R. ; Uyeda, K. ; Amemiya, N. ; Tsukamoto, O.

Author_Institution

Central Res. Inst. of Electr. Power Ind., Tokyo, Japan

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

126

Lastpage

129

Abstract

The development of large-current-capacity AC superconducting cables is an important step in the realization of AC superconducting power apparatus. The authors have developed and tested a kA-class superconducting cable, bundled and twisted with 343 strands. The measured AC quench current was much smaller than the sum of the critical current of each strand. The authors theoretically and experimentally investigate the causes of this current degradation. Many factors were considered as the causes of this AC current degradation, and the focus is on the nonuniform current distribution among the strands of a cable was measured. The measured current distributions are compared with theoretical current distributions, and the component of AC quench current degradation is discussed.<>

Keywords

cable testing; composite superconductors; critical currents; superconducting cables; AC quench current; AC superconducting cables; current degradation; large-current-capacity; multistrand cables; Critical current; Current distribution; Current measurement; Degradation; Equations; Impedance; Inductance; Power cables; Superconducting cables; Testing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233686

Filename

233686