Experiments and numerical simulations on local degradation characteristics of coated conductor due to overcurrent

Xudong Wang, Tao Wang, Atsushi Ishiyama, Masashi Yagi, Osamu Maruyama, Takeshi Ohkuma

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Coated conductors are subjected to short-circuit currents 10 to 30 times greater than the operating current in the use of superconducting power cables. The c and thickness of the stabilizer are considered to be nonuniformly distributed in the real manufacturing process. Thus, the coated conductor may be damaged locally by the hot spot due to the overcurrent. Therefore, it is important to clarify the local degradation characteristics of the coated conductor and determine its tolerance against the fault current in the actual operation. In a previous study, overcurrent experiments and numerical simulations on thermal stress-strain were carried out on a coated conductor with a nonuniformly distributed Ic. In this study, two samples with nonuniformly distributed copper plating thickness were tested. Numerical simulations based on the finite element method were performed to simulate the temperature and thermal stress-strain distribution caused by the overcurrent. The nonuniform thickness of the copper plating and the longitudinal length of the nonuniform area were considered as the simulation parameters.

    Original languageEnglish
    Article number6407834
    JournalIEEE Transactions on Applied Superconductivity
    Volume23
    Issue number3
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    Copper plating
    Thermal stress
    conductors
    degradation
    Degradation
    Electric fault currents
    Computer simulation
    thermal stresses
    plating
    Short circuit currents
    Cables
    simulation
    Experiments
    Finite element method
    copper
    strain distribution
    short circuit currents
    cables
    finite element method
    manufacturing

    Keywords

    • Degradation
    • finite element method
    • short circuit current
    • thermal stress

    ASJC Scopus subject areas

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

    Cite this

    Experiments and numerical simulations on local degradation characteristics of coated conductor due to overcurrent. / Wang, Xudong; Wang, Tao; Ishiyama, Atsushi; Yagi, Masashi; Maruyama, Osamu; Ohkuma, Takeshi.

    In: IEEE Transactions on Applied Superconductivity, Vol. 23, No. 3, 6407834, 2013.

    Research output: Contribution to journalArticle

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