The short-circuit test results of 6.9 kV/2.3 kV 400 kVA-class YBCO model transformer with fault current limiting function

A. Tomioka, T. Bohno, S. Kakami, M. Isozaki, K. Watanabe, K. Toyama, S. Sugiyama, M. Konno, Y. Gosho, H. Okamoto, H. Hayashi, T. Tsutsumi, M. Iwakuma, T. Saito, K. Tanabe, Y. Shiohara

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)

抄録

We are developing an elemental technology for 66/6.9 kV 20 MVA-class superconducting power transformer with fault current limiting function. In order to obtain the characteristics of YBCO conductor when the AC over current supplied to the conductor, the model coils were manufactured with YBCO tapes and tested. Based on these results, we manufactured the 6.9 kV/2.3 kV 400 kVA-class YBCO model transformer with fault current limiting function and performed short-circuit test. At the 0.25 s after short-circuit, the short-circuit current of primary winding was limited to about 174 A for a prospective current of 559 A. It was consistent with the design. The I-V characteristics of the winding did not change before and after the test. We consider the model transformer to be able to withstand AC over-current with the function of current limiting. The results suggest the possibility to design YBCO superconducting transformers with fault current limiting function for practical power grid.

本文言語英語
ページ(範囲)239-241
ページ数3
ジャーナルPhysica C: Superconductivity and its applications
484
DOI
出版ステータス出版済み - 1月 15 2013

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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