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, Haigun Lee

Research output: Contribution to journalArticle

6 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

Fingerprint

Superconducting fault current limiters
High temperature superconductors
acoustic emission
Acoustic emissions
high temperature superconductors
Quenching
Electric fault currents
Microcracks
quenching
transient heating
Short circuit currents
Korea
microcracks
short circuits
thermal stresses
Heating
Hot Temperature

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

A stability verification technique using acoustic emission for an HTS monofilar component for a superconducting fault current limiter. / Kim, H. M.; Park, K. B.; Lee, B. W.; Oh, I. S.; Sim, J. W.; Hyun, O. B.; Iwasa, Y.; Lee, Haigun.

In: Superconductor Science and Technology, Vol. 20, No. 6, 004, 01.06.2007, p. 506-510.

Research output: Contribution to journalArticle

Kim, H. M. ; Park, K. B. ; Lee, B. W. ; Oh, I. S. ; Sim, J. W. ; Hyun, O. B. ; Iwasa, Y. ; Lee, Haigun. / A stability verification technique using acoustic emission for an HTS monofilar component for a superconducting fault current limiter. In: Superconductor Science and Technology. 2007 ; Vol. 20, No. 6. pp. 506-510.
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