Transient stability characteristics of parallel-connected YBCO coated conductors for power transmission cables

Atsushi Ishiyama, Takuya Iwata, Hiroshi Ueda, Shinichi Mukoyama, Yuh Shiohara

Research output: Contribution to journalArticle

15 Citations (Scopus)


YBCO coated conductors are expected to be used in future high-temperature superconductor applications. For the application to power transmission cables, a number of YBCO coated conductors would be connected in parallel and they might be subjected to short-circuit fault currents. Therefore, in order to examine the stability and feasibility of YBCO power transmission cables, it is important to investigate the normal-zone initiation and propagation characteristics of the YBCO tapes and demonstrate the redistribution of transport current and the electromagnetic coupling between YBCO tapes during a short-circuit fault current. In this study, over-current pulses were applied to the two parallel-connected YBCO sample tapes in a liquid nitrogen bath, and the characteristics of the normal-zone initiation and propagation were examined experimentally. Additionally, we also show the experimental results of the redistribution of the transport current between parallel-connected YBCO sample tapes.

Original languageEnglish
Pages (from-to)1672-1675
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 2007 Jun 1



  • Over-current pulse
  • Parallel-connected YBCO tapes
  • Power transition cable
  • Transient stability

ASJC Scopus subject areas

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

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