J Bock et al 2004 Supercond. Sci. Technol. 17 S122 doi:10.1088/0953-2048/17/5/006
J Bock1, F Breuer1, H Walter1, M Noe2, R Kreutz3, M Kleimaier4, K-H Weck5 and S Elschner6
Show affiliationsThe German government funded resistive superconducting fault current limiter project CURL 10 is based on bulk material and aims at the development of a three-phase prototype for the medium voltage level (10 kV, 10 MVA). The key element of the project is the development of suitable robust superconducting components. On the basis of the well known melt cast process (MCP) for BSCCO-2212, these are manufactured by cutting superconducting tubes to bifilar coils. At the operation temperature of 65 K a current density of 4000 A cm−2 was achieved. In order to protect the superconductor during limitation the component was equipped with an electrical shunt contacted on its entire length.
Single-phase tests with nine of these components in series, corresponding to a protected load of 1.2 MVA, have been successfully accomplished and are described in detail. These tests include different types of short circuits as specified by the utilities within the project and included lightning surge loads up to 75 kV.
84.30.Jc Power electronics; power supply circuits
84.71.Ba Superconducting magnets; magnetic levitation devices
74.72.Jt Other cuprates, including Tl and Hg-based cuprates
85.25.Am Superconducting device characterization, design, and modeling
Issue 5 (May 2004)
Received 12 November 2003
Published 19 February 2004
J Bock et al 2004 Supercond. Sci. Technol. 17 S122
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