Current margin against the fault current in REBCO coated conductors

Atsushi Ishiyama, Hiroshi Momotari, Xudong Wang, Michio Arai, Hiroshi Ueda, Masayoshi Ohya, Kazuya Ohmatsu, Noboru Fujiwara

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    The application of yttrium barium copper oxide (YBCO) coated conductors in power cables is anticipated. In practical applications, high-temperature superconducting (HTS) cables can be subjected to short-circuit fault current and are expected to operate for over 30 years. In order to safeguard the current margin of YBCO coated conductors against fault current, we carried out preliminary experiments on overcurrent characteristics using an HTS model cable. Meanwhile, we performed numerical simulations to clarify the electromagnetic and thermal behaviors of the HTS model cable. In this study, we numerically simulated the fault current waveform in each YBCO coated conductor that constitutes an entire cable. We then carried out experiments focusing on the current-voltage (I -V) characteristics and the current margin without causing critical current (Ic) degradation against the fault current by varying the amplitude of the waveform obtained numerically. Furthermore, we repeatedly applied the fault current to a YBCO coated conductor to experimentally investigate the Ic degradation caused by iterative fault current.

    Original languageEnglish
    Article number5629451
    Pages (from-to)3033-3036
    Number of pages4
    JournalIEEE Transactions on Applied Superconductivity
    Volume21
    Issue number3 PART 3
    DOIs
    Publication statusPublished - 2011 Jun

    Fingerprint

    Electric fault currents
    Yttrium barium copper oxides
    margins
    conductors
    barium oxides
    Cables
    cables
    copper oxides
    yttrium
    Superconducting cables
    Degradation
    High temperature applications
    Critical currents
    waveforms
    Short circuit currents
    degradation
    Experiments
    short circuits
    Temperature
    critical current

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    Cite this

    Ishiyama, A., Momotari, H., Wang, X., Arai, M., Ueda, H., Ohya, M., ... Fujiwara, N. (2011). Current margin against the fault current in REBCO coated conductors. IEEE Transactions on Applied Superconductivity, 21(3 PART 3), 3033-3036. [5629451]. https://doi.org/10.1109/TASC.2010.2086413

    Current margin against the fault current in REBCO coated conductors. / Ishiyama, Atsushi; Momotari, Hiroshi; Wang, Xudong; Arai, Michio; Ueda, Hiroshi; Ohya, Masayoshi; Ohmatsu, Kazuya; Fujiwara, Noboru.

    In: IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3 PART 3, 5629451, 06.2011, p. 3033-3036.

    Research output: Contribution to journalArticle

    Ishiyama, A, Momotari, H, Wang, X, Arai, M, Ueda, H, Ohya, M, Ohmatsu, K & Fujiwara, N 2011, 'Current margin against the fault current in REBCO coated conductors', IEEE Transactions on Applied Superconductivity, vol. 21, no. 3 PART 3, 5629451, pp. 3033-3036. https://doi.org/10.1109/TASC.2010.2086413
    Ishiyama, Atsushi ; Momotari, Hiroshi ; Wang, Xudong ; Arai, Michio ; Ueda, Hiroshi ; Ohya, Masayoshi ; Ohmatsu, Kazuya ; Fujiwara, Noboru. / Current margin against the fault current in REBCO coated conductors. In: IEEE Transactions on Applied Superconductivity. 2011 ; Vol. 21, No. 3 PART 3. pp. 3033-3036.
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