Degradation characteristics of YBCO coated conductors due to fault-current in power cable applications

H. Kono, X. Wang, H. Ueda, Atsushi Ishiyama, T. Saitoh, Y. Aoki, M. Yagi, S. Mukoyama, N. Fujiwara

    Research output: Contribution to journalArticle

    Abstract

    In high temperature superconductor applications used in electric power devices, YBCO coated conductors may be subjected to short-circuit fault-currents that are 10-30 times the normal operating current. These over-currents cause heat generation, resulting in Ic degradation of the YBCO coated conductor. Therefore, it is necessary to fully investigate the degradation characteristics of YBCO coated conductors. We previously conducted preliminary experiments on the degradation of YBCO sample tapes resulting from the over-current pulse drive. In this study, we analyzed the waveform of fault-current that is supposed to flow into the YBCO coated conductor when a short-circuit fault occurs in a power cable application, by using a newly developed numerical simulation program. We also carried out experiments in which an over-current with the analyzed fault-current waveform was applied to two YBCO sample tapes. We then investigated the degradation characteristics, focusing on the amount of current permitted. Experimental results showed that both the sample tapes (initial Ic = 118.6 A and 123.2 A) were degraded by applying an over-current with a peak value of 320 A.

    Original languageEnglish
    Pages (from-to)1334-1337
    Number of pages4
    JournalPhysica C: Superconductivity and its Applications
    Volume470
    Issue number20
    DOIs
    Publication statusPublished - 2010 Nov 1

    Fingerprint

    Electric fault currents
    cables
    Cables
    conductors
    Tapes
    degradation
    Degradation
    Short circuit currents
    tapes
    High temperature superconductors
    Heat generation
    short circuits
    Experiments
    waveforms
    Computer simulation
    heat generation
    electric power
    high temperature superconductors
    causes

    Keywords

    • Degradation
    • Fault-current
    • FEM
    • YBCO coated conductor

    ASJC Scopus subject areas

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

    Cite this

    Degradation characteristics of YBCO coated conductors due to fault-current in power cable applications. / Kono, H.; Wang, X.; Ueda, H.; Ishiyama, Atsushi; Saitoh, T.; Aoki, Y.; Yagi, M.; Mukoyama, S.; Fujiwara, N.

    In: Physica C: Superconductivity and its Applications, Vol. 470, No. 20, 01.11.2010, p. 1334-1337.

    Research output: Contribution to journalArticle

    Kono, H. ; Wang, X. ; Ueda, H. ; Ishiyama, Atsushi ; Saitoh, T. ; Aoki, Y. ; Yagi, M. ; Mukoyama, S. ; Fujiwara, N. / Degradation characteristics of YBCO coated conductors due to fault-current in power cable applications. In: Physica C: Superconductivity and its Applications. 2010 ; Vol. 470, No. 20. pp. 1334-1337.
    @article{436aabd5b976418bbed3065b3c35aec3,
    title = "Degradation characteristics of YBCO coated conductors due to fault-current in power cable applications",
    abstract = "In high temperature superconductor applications used in electric power devices, YBCO coated conductors may be subjected to short-circuit fault-currents that are 10-30 times the normal operating current. These over-currents cause heat generation, resulting in Ic degradation of the YBCO coated conductor. Therefore, it is necessary to fully investigate the degradation characteristics of YBCO coated conductors. We previously conducted preliminary experiments on the degradation of YBCO sample tapes resulting from the over-current pulse drive. In this study, we analyzed the waveform of fault-current that is supposed to flow into the YBCO coated conductor when a short-circuit fault occurs in a power cable application, by using a newly developed numerical simulation program. We also carried out experiments in which an over-current with the analyzed fault-current waveform was applied to two YBCO sample tapes. We then investigated the degradation characteristics, focusing on the amount of current permitted. Experimental results showed that both the sample tapes (initial Ic = 118.6 A and 123.2 A) were degraded by applying an over-current with a peak value of 320 A.",
    keywords = "Degradation, Fault-current, FEM, YBCO coated conductor",
    author = "H. Kono and X. Wang and H. Ueda and Atsushi Ishiyama and T. Saitoh and Y. Aoki and M. Yagi and S. Mukoyama and N. Fujiwara",
    year = "2010",
    month = "11",
    day = "1",
    doi = "10.1016/j.physc.2010.05.106",
    language = "English",
    volume = "470",
    pages = "1334--1337",
    journal = "Physica C: Superconductivity and its Applications",
    issn = "0921-4534",
    publisher = "Elsevier",
    number = "20",

    }

    TY - JOUR

    T1 - Degradation characteristics of YBCO coated conductors due to fault-current in power cable applications

    AU - Kono, H.

    AU - Wang, X.

    AU - Ueda, H.

    AU - Ishiyama, Atsushi

    AU - Saitoh, T.

    AU - Aoki, Y.

    AU - Yagi, M.

    AU - Mukoyama, S.

    AU - Fujiwara, N.

    PY - 2010/11/1

    Y1 - 2010/11/1

    N2 - In high temperature superconductor applications used in electric power devices, YBCO coated conductors may be subjected to short-circuit fault-currents that are 10-30 times the normal operating current. These over-currents cause heat generation, resulting in Ic degradation of the YBCO coated conductor. Therefore, it is necessary to fully investigate the degradation characteristics of YBCO coated conductors. We previously conducted preliminary experiments on the degradation of YBCO sample tapes resulting from the over-current pulse drive. In this study, we analyzed the waveform of fault-current that is supposed to flow into the YBCO coated conductor when a short-circuit fault occurs in a power cable application, by using a newly developed numerical simulation program. We also carried out experiments in which an over-current with the analyzed fault-current waveform was applied to two YBCO sample tapes. We then investigated the degradation characteristics, focusing on the amount of current permitted. Experimental results showed that both the sample tapes (initial Ic = 118.6 A and 123.2 A) were degraded by applying an over-current with a peak value of 320 A.

    AB - In high temperature superconductor applications used in electric power devices, YBCO coated conductors may be subjected to short-circuit fault-currents that are 10-30 times the normal operating current. These over-currents cause heat generation, resulting in Ic degradation of the YBCO coated conductor. Therefore, it is necessary to fully investigate the degradation characteristics of YBCO coated conductors. We previously conducted preliminary experiments on the degradation of YBCO sample tapes resulting from the over-current pulse drive. In this study, we analyzed the waveform of fault-current that is supposed to flow into the YBCO coated conductor when a short-circuit fault occurs in a power cable application, by using a newly developed numerical simulation program. We also carried out experiments in which an over-current with the analyzed fault-current waveform was applied to two YBCO sample tapes. We then investigated the degradation characteristics, focusing on the amount of current permitted. Experimental results showed that both the sample tapes (initial Ic = 118.6 A and 123.2 A) were degraded by applying an over-current with a peak value of 320 A.

    KW - Degradation

    KW - Fault-current

    KW - FEM

    KW - YBCO coated conductor

    UR - http://www.scopus.com/inward/record.url?scp=77957892382&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=77957892382&partnerID=8YFLogxK

    U2 - 10.1016/j.physc.2010.05.106

    DO - 10.1016/j.physc.2010.05.106

    M3 - Article

    VL - 470

    SP - 1334

    EP - 1337

    JO - Physica C: Superconductivity and its Applications

    JF - Physica C: Superconductivity and its Applications

    SN - 0921-4534

    IS - 20

    ER -