Over-current characteristics of 275-kV class YBCO power cable

Atsushi Ishiyama*, Xudong Wang, Hiroshi Ueda, Toshikuni Uryu, Masashi Yagi, Noboru Fujiwara

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


In Japan, a project for the development of a 275-kV class YBCO power cable started in 2008. High-temperature superconducting (HTS) power cables typically consist of a copper former, an HTS conductor layer, an electrical insulation layer, an HTS shield layer, and a copper shield layer. In practical applications, the 275-kV class transmission line may be subjected to short-circuit fault currents such as 63 kArms for a duration of 0.6 s. Therefore, in order to ensure the stability and demonstrate the feasibility of the cable, it is important to estimate the current distribution and temperature increase under the fault condition. We designed the copper former, copper shield layer, and copper plating of the YBCO coated conductor carefully so as to fulfill the requirements of practical applications. In this study, we carried out over-current experiments on a 2-m long YBCO model cable and performed numerical simulations by a computer program developed using the finite element method (FEM) and an electric circuit model. We investigated the electromagnetic and thermal behaviors of the cable under fault conditions from the experimental and simulation results.

Original languageEnglish
Article number5629382
Pages (from-to)1017-1020
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3 PART 2
Publication statusPublished - 2011 Jun


  • FEM
  • Fault current
  • HTS power cable
  • YBCO-coated conductor

ASJC Scopus subject areas

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


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