ENSYSTROB – Design, manufacturing and test of a 3-phase resistive fault current limiter based on coated conductors for medium voltage application

► We installed 3-phase superconducting current limiter for 12kV, 533A in a real grid. ► ENSYSTROB is the so far largest resistive superconducting current limiter world wide. ► Our superconducting current limiter ENSYSTROB is based on YBCO coated conductors. ► We showed that the AC losses of the ENSY...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2012-11, Vol.482, p.98-104
Main Authors: Elschner, S., Kudymow, A., Brand, J., Fink, S., Goldacker, W., Grilli, F., Noe, M., Vojenciak, M., Hobl, A., Bludau, M., Jänke, C., Krämer, S., Bock, J.
Format: Article
Language:English
Subjects:
AC-losses
Applied sciences
COATINGS
Conductors
COPPER OXIDE
Current limitation
Electric potential
ELECTRICAL CONDUCTIVITY
ELECTRICAL CONDUCTORS
Electrical engineering. Electrical power engineering
Exact sciences and technology
Fast switch
Faults
Field tests
MANUFACTURE
PHASES
Power electronics, power supplies
Resistive type
Superconducting current limiter
Superconducting devices
SUPERCONDUCTIVITY
SUPERCONDUCTORS
VOLTAGE
YBCO superconductors
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Summary:► We installed 3-phase superconducting current limiter for 12kV, 533A in a real grid. ► ENSYSTROB is the so far largest resistive superconducting current limiter world wide. ► Our superconducting current limiter ENSYSTROB is based on YBCO coated conductors. ► We showed that the AC losses of the ENSYSTROB current limiter are negligible. ► We compared two material options, YBCO tapes and bulk BSCCO, for current limiters. Within the German project ENSYSTROB a 3-phase resistive fault current limiter for medium voltage applications (12kV, 533Arms) was designed, built, tested and installed in the grid for a one year’s field test. The superconducting modules are made of YBCO coated conductors and replace the modules of an already successfully tested limiter on the basis of BSCCO 2212 bulk material. The components are multifilar spirals equipped with pairs of 12mm wide YBCO tapes. The single components were characterized with respect to critical current, AC losses and limitation behavior under all possible operation conditions. The finally mounted limiter was successfully tested with respect to high voltage and limitation according to the standards of the customer. It is now installed and operating in its field test location. Finally we give a first comparison of both materials with respect to the different operational aspects.
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2012.04.025