The short-circuit test results of 6.9 kV/2.3 kV 400 kVA-class YBCO model transformer

A. Tomioka, T. Otonari, T. Ogata, M. Iwakuma, H. Okamoto, H. Hayashi, Y. Iijima, T. Saito, Y. Gosho, K. Tanabe, T. Izumi, Y. Shiohara

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We are developing an elemental technology for 66 kV/6.9 kV 20 MVA-class power transformer with YBCO conductors. The protection of short-circuit technology is one of the elemental technologies for HTS transformer. Since short-circuit current is much higher than critical current of YBCO tape, there is a possibility that superconducting characteristics may be damaged during short-circuit period. We made a conductor to compose the YBCO tape with copper tape. We manufactured 6.9 kV/2.3 kV 400 kVA-class YBCO model transformer using this conductor and performed short-circuit current test. The short-circuit current of primary winding was 346 A which was about six times larger than the rated current. The I-V characteristics of the winding did not change before and after the test. We may consider this conductor withstands short-circuit current.

Original languageEnglish
Pages (from-to)1374-1378
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume471
Issue number21-22
DOIs
Publication statusPublished - Nov 1 2011

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short circuits
short circuit currents
transformers
Short circuit currents
conductors
tapes
Tapes
critical current
Critical currents
Power transformers
copper
Copper

All Science Journal Classification (ASJC) codes

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

Cite this

The short-circuit test results of 6.9 kV/2.3 kV 400 kVA-class YBCO model transformer. / Tomioka, A.; Otonari, T.; Ogata, T.; Iwakuma, M.; Okamoto, H.; Hayashi, H.; Iijima, Y.; Saito, T.; Gosho, Y.; Tanabe, K.; Izumi, T.; Shiohara, Y.

In: Physica C: Superconductivity and its applications, Vol. 471, No. 21-22, 01.11.2011, p. 1374-1378.

Research output: Contribution to journalArticle

Tomioka, A, Otonari, T, Ogata, T, Iwakuma, M, Okamoto, H, Hayashi, H, Iijima, Y, Saito, T, Gosho, Y, Tanabe, K, Izumi, T & Shiohara, Y 2011, 'The short-circuit test results of 6.9 kV/2.3 kV 400 kVA-class YBCO model transformer', Physica C: Superconductivity and its applications, vol. 471, no. 21-22, pp. 1374-1378. https://doi.org/10.1016/j.physc.2011.05.197
Tomioka, A. ; Otonari, T. ; Ogata, T. ; Iwakuma, M. ; Okamoto, H. ; Hayashi, H. ; Iijima, Y. ; Saito, T. ; Gosho, Y. ; Tanabe, K. ; Izumi, T. ; Shiohara, Y. / The short-circuit test results of 6.9 kV/2.3 kV 400 kVA-class YBCO model transformer. In: Physica C: Superconductivity and its applications. 2011 ; Vol. 471, No. 21-22. pp. 1374-1378.
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