Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Fabrication and Characteristic Tests of a 1 MVA Single Phase HTS Transformer with Concentrically Arranged Windings

  • Kim, S.H. (Seoul National University) ;
  • Kim, W.S. (Electrical Engineering and Science Research Institute) ;
  • Choi, K.D. (Korea Polytechnic Univeristy) ;
  • Joo, H.G. (Korea Polytechnic Univeristy) ;
  • Hong, G.W. (Korea Polytechnic Univeristy) ;
  • Han, J.H. (Korea Polytechnic Univeristy) ;
  • Lee, H.G. (Korea Polytechnic Univeristy) ;
  • Park, J.H. (Hyosung Corporation) ;
  • Song, H.S. (Hyosung Corporation)
  • Published : 2004.11.01
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Abstract

A 1 MV A single phase high temperature superconducting (HTS) transformer was manufactured and tested. The rated voltages of primary and secondary of the HTS transformer are 22.9 kV and 6.6 kV respectively. BSCCO-2223 HTS tape was used for HTS windings of 1 MV A HTS transformer. In order to reduce AC loss generated in the HTS winding, the type of concentric arrangement winding was adopted to a 1 MV A HTS transformer. Single HTS tape for primary windings and 4 parallel HTS tapes for secondary windings were used considering the each rated current of the HTS transformer. A core of HTS transformer was fabricated as a shell type core made of laminated silicon steel plate. And a GFRP cryostat with a room temperature bore was also manufactured. The characteristic tests of 1 MV A HTS transformer were performed such as no load test, short circuit test and several insulation tests at 65 K using sub-cooled liquid nitrogen. From the results of tests, the validity of design of HTS transformer was ascertained.

Keywords

References

  1. Sam P. Mehta, Nicola Aversa, and Michael S. Walker, 'Transforming transformer,' IEEE Spectrum, vol. 34, no. 7, pp.43-49, July, 1997
  2. S. W. Schwenterly, B. W. McConnell, et al.,'Performance of a IMVA Demonstration Transforme,' IEEE Trans. Appl. Supercond., vol. 9, no. 2, pp.680-684, 1999
  3. Hee Joon Lee, Gueesoo Cha, Ji-Kwang Lee, Kyeong-Dal Choi, Kyung Woo Ryu, and Song-yop Hahn, 'Test and characteristic analysis of an HTS power transformer,' IEEE Trans. Appl. Supercond., vol. 11, no. 1, pp.1486-1489, 2001
  4. Hee Joon Lee, Gueesoo Cha, Ji-Kwang Lee, Song-yop Hahn, Kyung Woo Ryu, and Kyeong-Dal Choi, '10 kVA high Tc superconducting power transfomler with double pancake windings,' Journal o/the Korean Institute of Electrical Engineers,vol. 50, no. 2, pp.65-72, 2001
  5. W. Funkai, et al.,'Development of a 22kV/6.9kV Single-phase Model for a 3MVA HTS Power Transformer,' IEEE Trans. Appl. Supercond., vol. 11, no. 1, pp. 1578-1581, March, 2001
  6. Woo-Seok Kjm, Song-yop Hahn, Kyeong-Dal Choi, and et aI., 'Design of a IMVA High Tc Superconducting Transformer,' IEEE Trans. Appl. Supercond., vol. 13, no. 2, pp. 2291-2293, June, 2003
  7. Woo-Seok Kjm, Jin-Ho Han, Sung-Hoon Kjm, and et aI., 'Characteristic Test of a IMVA Single Phase HTS Transformer with Pancake Windings,' IEEE Trans. Appl. Supercond., vol. 14, no. 2, pp. 904-907, June 2004
  8. T. L. Baldwin, J. I. Ykema, C. L. Allen, and J. L. Langston, 'Design Optimization of High Temperature Superconducting Power Transformers,' IEEE Trans. Appl. Supercond., vol. 13, no. 2, pp. 2344-2347, June 2003