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

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 1...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2011-06, Vol.21 (3), p.1397-1400
Main Authors: Hayakawa, N, Kojima, H, Hanai, M, Okubo, H
Format: Article
Language:English
Subjects:
Applied sciences
Circuit faults
Conductors
Connection and protection apparatus
Electrical engineering. Electrical power engineering
Electromagnets
Electronics
Exact sciences and technology
Fault currents
High temperature superconductors
Impedance
Limiting
Power system stability
Recovery under load
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Superconducting devices
superconducting fault current limiter
superconducting transformer
system coordination
Transformers and inductors
Various equipment and components
YBCO coated conductor
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Summary: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.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2010.2089412