High-Current HTS Cables: Status and Actual Development

Second-generation high-temperature superconductors (HTS) REBCO are promising for high-field application due to the excellent J c (B) performance at low temperatures and for power transmission at liquid nitrogen temperature. For power transmission with HTS, the formation of high-current HTS cables fr...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2016-06, Vol.26 (4), p.1-5
Main Authors: Fietz, Walter H., Wolf, Michael J., Preuss, Alan, Heller, Reinhard, Weiss, Klaus-Peter
Format: Article
Language:English
Subjects:
Cables
Conductors
Critical current density (superconductivity)
Design
Design optimization
High current cable
High-temperature superconductor
High-temperature superconductors
Liquid nitrogen
Optimization
Power transmission
Production
Proposals
REBCO
Shutdowns
Substrates
Superconducting cables
Superconducting magnets
Superconducting tapes
Superconductivity
Superconductors
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Summary:Second-generation high-temperature superconductors (HTS) REBCO are promising for high-field application due to the excellent J c (B) performance at low temperatures and for power transmission at liquid nitrogen temperature. For power transmission with HTS, the formation of high-current HTS cables from single HTS tapes is desirable for cable currents of several 10 kA up to more than 100 kA. On the other hand, to avoid high inductances, which would cause high-voltage problems in case of quench or fast shutdown, high-current HTS cables are needed for larger high-field magnets, too, typically operated at 4.5 K or lower. In the last years, several HTS cable designs have been proposed, such as twisted stacked cable, CORC cable, and Roebel cable. This talk will give an overview of such proposals and highlight actual developments in HTS cable design and REBCO tape optimization, e.g., for highest field. In addition, an optimization of round TSTC strand will be introduced, which is designed for simple fabrication in long lengths for versatile use either for the production of cables to be used at high fields or for power transmission.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2016.2517319