Numerical analyses of the electromagnetic force acting on high-temperature superconducting power cables due to fault current

X. Wang, Atsushi Ishiyama, M. Ohya, O. Maruyama, T. Ohkuma

    Research output: Contribution to journalArticle

    Abstract

    In Japan, the development of the 66kV class REB 2C 3O 7x (RE123; RE stands for rare earth) high-temperature superconducting (HTS) power cable was begun in 2008 as a national project. 66kV class RE123 HTS power cables may be subjected to a fault current of 31.5kA rms for 2s. Therefore, the electromagnetic and thermal characteristics of HTS power cables have to be determined under fault conditions to ensure stability and feasibility. In this study, numerical analyses were performed using a computer program on the basis of the finite element method and an equivalent circuit model to evaluate the electromagnetic and thermal behaviors of a 66kV class HTS model cable resulting from the fault current. The electromagnetic forces acting on coated conductors that are assembled in the HTS model cable were also numerically simulated under the fault condition. The result found was that the maximum electromagnetic force acting on the coated conductor in the peeling and compression direction was less than 20kPa. However, the irreversible I c degradations caused by the peeling and compression stress were above several MPa in previous studies. Thus, the results of this study indicate a low probability of I c degradation of the 66kV class HTS power cable being caused by the electromagnetic force due to the fault current.

    Original languageEnglish
    Article number054018
    JournalSuperconductor Science and Technology
    Volume25
    Issue number5
    DOIs
    Publication statusPublished - 2012 May

    Fingerprint

    Electric fault currents
    cables
    Cables
    electromagnetism
    peeling
    Peeling
    Temperature
    Compaction
    conductors
    degradation
    Degradation
    relativistic electron beams
    equivalent circuits
    Equivalent circuits
    Rare earths
    Computer program listings
    Japan
    finite element method
    rare earth elements
    computer programs

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Condensed Matter Physics
    • Ceramics and Composites
    • Materials Chemistry
    • Metals and Alloys

    Cite this

    Numerical analyses of the electromagnetic force acting on high-temperature superconducting power cables due to fault current. / Wang, X.; Ishiyama, Atsushi; Ohya, M.; Maruyama, O.; Ohkuma, T.

    In: Superconductor Science and Technology, Vol. 25, No. 5, 054018, 05.2012.

    Research output: Contribution to journalArticle

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