A stability verification technique using acoustic emission for an HTS monofilar component for a superconducting fault current limiter

H. M. Kim, K. B. Park, B. W. Lee, I. S. Oh, J. W. Sim, O. B. Hyun, Y. Iwasa, H. G. Lee

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)

    Abstract

    This paper reports an acoustic emission (AE) technique that was developed for detecting the quenching and stability characteristics of high-temperature superconductors (HTSs), particularly a BSCCO-2212 monofilar component for a resistive superconducting fault current limiter (SFCL) system. The 24kV class SFCL, which was recently developed by the KEPRI-LSIS collaboration group in Korea, requires almost 150 BSCCO-2212 monofilar components. A BSCCO-2212 monofilar HTS undergoes thermal and mechanical stress creating microcracks during and after quenching or reaching a fault state such as during a short-circuit test. The AE technique is a useful tool for detecting the presence of transient heating and the existence of hot spots within the superconducting fault current component.

    Original languageEnglish
    Article number004
    Pages (from-to)506-510
    Number of pages5
    JournalSuperconductor Science and Technology
    Volume20
    Issue number6
    DOIs
    Publication statusPublished - 2007 Jun 1

    ASJC Scopus subject areas

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

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