Design and evaluation of 275 kV-3 kA HTS power cable

M. Yagi*, S. Mukoyama, T. Mitsuhashi, T. Jun, J. Liu, R. Nakayama, N. Hayakawa, X. Wang, A. Ishiyama, N. Amemiya, T. Hasegawa, T. Saitoh, T. Ohkuma, O. Maruyama

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

18 Citations (Scopus)


A 275 kV 3 kA high temperature superconducting (HTS) cable has been developed in the Materials & Power Applications of Coated Conductors (M-PACC) project. The cable is expected to be put to practical use as the backbone power line in the future because the capacity of 1.5 GW is about the same as overhead transmission lines. The 30 m cable has been designed on the basis of design values that had been obtained by various voltage tests, AC loss measurement tests, short circuit tests, and other elementary tests. Cable insulation was determined by the design stresses and test conditions based on IEC, JEC (Japan electrical standards), and other HTS demonstrations. This cable was also designed to withstand the short circuit test of 63 kA for 0.6 seconds and to have low losses, including AC loss and dielectric loss of 0.8 W/m at 3kA, 275 kV. Based on the design, a 30 m cable was manufactured, and short samples during this manufacturing process were confirmed to have the designed characteristics. Furukawa Electric prepared a demonstration of the 30 m cable with two terminations and a cable joint. The long-term test under a current of 3 kA, and test voltage determined from 30 years of insulation degradation has been conducted since November 2012 at Shenyang in China.

Original languageEnglish
Pages (from-to)277-280
Number of pages4
JournalPhysics Procedia
Publication statusPublished - 2013
Event25th International Symposium on Superconductivity, ISS 2012 - Tokyo, Japan
Duration: 2012 Dec 32012 Dec 5


  • Electric Insulation
  • HTS power cable
  • High Voltage
  • Partial discharge
  • YBCO

ASJC Scopus subject areas

  • General Physics and Astronomy


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