Suitable Cable Structure of HTS Triaxial Cable Cooled by Counter Flow Cooling Method for Long-Distance Power Transmission

Daisuke Miyagi, Ryoji Sakakibara, Yuki Shinozaki, Makoto Tsuda, Takataro Hamajima

研究成果: Article査読

7 被引用数 (Scopus)

抄録

A high temperature superconducting (HTS) triaxial cable fits long-distance power transmission compared to the three-in-one superconducting (SC) cable, since the HTS triaxial cable has lower ac loss and larger cooling channel, and the HTS tape length used for the HTS triaxial cable is much shorter than that of the three-in-one SC cable. We investigated a suitable cable structure of the HTS triaxial cable, which has the limitation of the outer diameter (150 mm), cooled by counter-flow cooling for long-distance power transmission using the numerical analysis that considered the heat transfer from the cable outside and the heat generation caused by the electrical loss and the frictional loss of a coolant inside the cable. Our results show that it is very important to expand an outside channel and increase the flow rate in order to operate the HTS triaxial cable for a long-distance. The suitable flow rate for increasing the cable length that each cooling station can cool the HTS cable at 77 K or lower is about 50 L/min. The maximum cable length is 1.7 km at the conductor diameter of 88 mm. This cable length of 1.7 km is larger than that of the three-in-one cable; the maximum cable length of the three-in-one cable is less than 1 km. Therefore, the number of cooling stations can be reduced by adopting HTS triaxial cable.

本文言語English
論文番号5400705
ジャーナルIEEE Transactions on Applied Superconductivity
28
4
DOI
出版ステータスPublished - 2018 6月

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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