Update of YOKOHAMA HTS cable project

Hiroyasu Yumura*, Yuichi Ashibe, Masayoshi Ohya, Hideki Itoh, Michihiko Watanabe, Takato Masuda, Hiroshi Ichikawa, Tomoo Mimura, Shoichi Honjo, Tsukushi Hara, Ryusuke Ohno, Masahiro Shimoda, Naoko Nakamura, Toshihiro Komagome, Hiroharu Yaguchi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)


The high-temperature superconducting (HTS) cable demonstration project supported by Ministry of Economy, Trade and Industry and New Energy and Industrial Technology Development Organization has started in Japan. The target of this project is to operate a 66 kV, 200 MVA HTS cable in the live network of Tokyo Electric Power Company in order to demonstrate its reliability and stable operation. The design of the HTS cable with DI-BSCCO has been completed as well as those of a termination and a joint. A 30-m HTS cable system with terminations, a splice, and a cooling system was installed in the SEI facility and confirmed the cable has good performances as design. The HTS cable, splice box, and termination vessels have been manufactured with the same design of a 30-m cable system. By now, the HTS cables have been installed into the conduit at the Asahi substation of Tokyo Electric Power Company. The constructions of splice and terminations have been completed. The HTS cable system at Asahi substation was cooled down in this spring. This paper describes the design and completion test results of the HTS cable system.

Original languageEnglish
Article number6458991
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 2013
Externally publishedYes


  • High-temperature superconductors
  • power cable installation
  • power cable joint
  • superconducting power cables

ASJC Scopus subject areas

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


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