Thermo-mechanical properties of a 66 kV superconducting power cable system

Michihiko Watanabe*, Takato Masuda, Yuichi Ashibe, Masayuki Hirose, Shigeki Isojima, Shoichi Honjo, Toshiyuki Uchiyama, Masato Shimodate, Yoshihisa Takahashi, Hiroshi Suzuki

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

14 Citations (Scopus)


To verify the practicability for intended application, TEPCO and SEI have jointly developed a 100 m, 66 kV class High Temperature superconducting power cable system and tested for a long duration one year at the CRIEPI test site. The cable has three cores in a cryostat and a cold dielectric configuration. The three cores are stranded loosely to manage thermal contraction during the cooling process. The cable is warmed to room temperature after each test to investigate the influence of the cooling cycle. At the initial cooling of the system, the tension of the cable due to thermal contraction during the cooling process was measured to be about 8 kN, which is considerably lower than 50 kN measured in a short length model cable without measures against thermal contraction. System properties, such as critical current, AC loss, shield current and so on are measured during each test after the cooling cycle. During the test program, the system shows no change in its properties.

Original languageEnglish
Pages (from-to)1956-1959
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 II
Publication statusPublished - 2003 Jun
Externally publishedYes
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: 2002 Aug 42002 Aug 9


  • Superconducting power cable
  • Superconducting transmission lines
  • Thermo-mechanical properties

ASJC Scopus subject areas

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


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