Over-current characteristics of a 20-m-Long YBCO model cable

Xudong Wang, Hiroshi Ueda, Atsushi Ishiyama, Masashi Yagi, Shinichi Mukoyama, Masayoshi Ohya, Takato Masuda, Naoji Kashima, Shigeo Nagaya, Yuh Shiohara

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


To achieve large current capacity and mechanical flexibility, high-temperature superconductor (HTS) power transmission cables consist of a number of YBCO coated conductors, which are assembled and wound spirally on a Cu former. In practical applications, superconducting cables might be subjected to short-circuit fault currents that are 10 to 30 times the operating current. Therefore, in order to ensure the stability and feasibility of HTS power cables and protect them from fault currents, it is important to estimate the redistribution of the transport current and electromagnetic coupling among the conductor layer, shield layer, and Cu former. In this study, we carried out experiments on a 20-m-long YBCO model cable, which was composed of two jointed 10-m-long YBCO model cables. Over-current with a peak of 31.8 kArms and a duration of 2.02 s was applied to the model cable. We performed numerical simulations using a newly developed computer program based on the 3D finite element method (FEM) in order to clarify the electromagnetic and thermal behaviors of the YBCO model cable in the presence of an over-current.

Original languageEnglish
Article number4982569
Pages (from-to)1722-1726
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - Jun 2009
Externally publishedYes


  • 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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