Progress in Development of Superconducting Fault Current Limiting Transformer (SFCLT)

Author

Hayakawa, Naoki ; Kojima, Hiroki ; Hanai, Masahiro ; Okubo, Hitoshi

Author_Institution

EcoTopia Sci. Inst., Nagoya Univ., Nagoya, Japan

Volume

21

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

1397

Lastpage

1400

Abstract

We have been developing Superconducting Fault Current Limiting Transformer (SFCLT), which has multifunction of both a superconducting transformer in a steady state as well as a superconducting fault current limiter in a fault condition. This paper introduces the progress in our SFCLT project since 1998, from Step-1 to the latest Step-5, with the concept, design, fabrication and test results of SFCLT. In the latest Step-5, we developed a 2 MVA, 22/6.6 kV class SFCLT with YBCO coated conductors and verified the fundamental function as a transformer, effective current limiting function as a fault current limiter, and recovery characteristics after the fault clearance with its operational criterion.

Keywords

superconducting fault current limiters; superconducting transformers; SFCLT; YBCO coated conductor; apparent power 2 MVA; recovery characteristic; superconducting fault current limiting transformer; Circuit faults; Conductors; Fault currents; High temperature superconductors; Impedance; Limiting; Power system stability; Recovery under load; YBCO coated conductor; superconducting fault current limiter; superconducting transformer; system coordination;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2089412

Filename

5643133