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Journal of Superconductivity and Novel Magnetism

, Volume 30, Issue 4, pp 1077–1081 | Cite as

Behavior of Second Generation HighTemperature Superconductor Tapes in Fault Current Limiting Systems

  • A. P. Malozemoff
Original Paper
  • 109 Downloads

Abstract

Optimization of high-temperature superconductor (HTS) coated conductor for standalone superconductor fault current limiting (FCL) systems and for inherently fault current limiting cables is quite different. To minimize the amount of conductor, and so to lower cost, a high conductor critical current per unit width I c,w is desirable to minimize the number of parallel conductors required to meet operating current requirements. In standalone systems, a high normal state resistivity and thin conductor are also desirable to minimize conductor length. But in FCL cables, conductor length is fixed by the application. Limits on I c,w, resistivity, and thickness also come from the necessity to prevent local overheating during a fault or, in a cable, bubbling of liquid nitrogen which could precipitate a dielectric failure. A critical insight is that even for low-voltage faults, hot spots can arise in the conductor, and heating within these hot spots must also be controlled. A simple model is introduced to describe this phenomenon and estimate hot-spot heating. Tolerable hot-spot temperature rise in FCL cables is drastically less than in standalone FCLs. Implications for design of FCL cables are discussed and their viability for applications such as linking substations at the distribution level is demonstrated.

Keywords

HTS tapes Fault current limiter FCL cable Standalone FCL Hot spots 

References

  1. 1.
    Noe, M., Steurer, M.: High-temperature superconductor fault current limiters: concepts, applications, and development status. Supercond. Sci. Technol. 20, R15 (2007)ADSCrossRefGoogle Scholar
  2. 2.
    Malozemoff, A.P., Yuan, J., Rey, C.M.: HTS AC cables for power grid applications, in Superconductors in the power grid. In: Rey, C. M. (ed.) , pp 133–188. Woodhead Publishing, Cambridge (2015)Google Scholar
  3. 3.
    Malozemoff, A.P.: Progress in American Superconductor’s HTS wire and optimization for current limiting systems, Physica C. doi: 10.1016/j.physc.2016.03.07
  4. 4.
    Tixador, P., Badel, A.: Superconducting fault current limiter optimized design. Phys. C 518, 130–133 (2015)ADSCrossRefGoogle Scholar
  5. 5.
    Kraemer, H.-P., Schmidt, W., Utz, B., Neumueller, H.-W.: Switching behaviour of YBCO thin film conductors in resistive current limiters. IEEE Trans. Appl. Supercond. 13, 2044 (2003)CrossRefGoogle Scholar
  6. 6.
    Schmidt, W., Kraemer, H.-P., Neumueller, H.-W., Schmitt, H., Malozemoff, A.P., Otto, A.: Limiting short-circuit currents in electrical networks with superconductor wires, CIGRE 2008, Paris, Aug. 24-29, 2008, paper D1-102Google Scholar
  7. 7.
    Maguire, J., Folts, D., Yuan, J., Henderson, N., et al.: Status and progress of a fault current limiting HTS cable to be installed in the Con Edison grid. Adv. Cryog. Eng. 55A, 445–452 (2009)Google Scholar
  8. 8.
    Gouge, M.J., Duckworth, R.C., Demko, J.A., Rey, C.M., et al.: Testing of 3-meter fault current limiting cables. IEEE Trans. Appl. Supercond. 19, 1744–1747 (2009)ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.DevensUSA

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