Operation of superconducting fault current limiter using vacuum interrupter driven by electromagnetic repulsion force for commutating switch |
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| Authors: | Iwao Shimizu Yuji Naito Iwao Yamaguchi Katsuyuki Kaiho Hitoshi Mizoguchi Satoru Yanabu |
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| Affiliation: | 1. Tokyo Denki University, Japan;2. National Institute of Advanced Industrial Science and Technology, Japan;3. Research and Development Association for Future Electron Devices, Japan |
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| Abstract: | Using conventional high‐temperature superconducting wire, a model superconducting fault current limiter (SFCL) is made and tested. Solenoid coil using Bi2223 silver sheath wire is so made that inductance is as small as possible and a vacuum interrupter is connected in series to it. A conventional reactor coil is connected in parallel. When the fault current flows in this equipment, superconducting wire is quenched and current is transferred into the parallel coil because of voltage drop of superconducting wire. This large current in parallel coil actuates magnetic repulsion mechanism of vacuum interrupter. Due to opening of vacuum interrupter, the current in superconducting wire is broken. By using this equipment, current flow time in superconducting wire can be easily minimized. On the other hand, the fault current is also easily limited by large reactance of parallel coil. © 2008 Wiley Periodicals, Inc. Electr Eng Jpn, 164(1): 52–61, 2008; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20315 |
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| Keywords: | superconducting fault current limiter high‐temperature superconductor electromagnetic repulsion mechanism |
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