Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
권호 표지

Design of 1 MVA Single Phase HTS Transformer with Pancake Windings Cooled by Natural Convection of Sub-cooled Liquid Nitrogen

  • Kim, Woo-Seok (Electrical Engineering and Science Research Institute) ;
  • Kim, Sung-Hoon (School of Electrical Engineering, Seoul National University) ;
  • Hahn, Song-yop (School of Electrical Engineering, Seoul National University) ;
  • Park, Kyeong-Dal (Graduate School of Energy, Korea Polytechnic University) ;
  • Joo, Hyeong-Gil (Graduate School of Energy, Korea Polytechnic University) ;
  • Hong, Gye-Won (Graduate School of Energy, Korea Polytechnic University) ;
  • Han, Jin-Ho (Graduate School of Energy, Korea Polytechnic University) ;
  • Lee, Don-Kun (Graduate School of Energy, Korea Polytechnic University) ;
  • Park, Yeon-Suk (National High Magnetic Field Laboratory)
  • Published : 2003.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

A 1 MVA single-phase high temperature superconducting (HTS) transformer with BSCCO-2223 wire was designed in this paper. The rated voltages of each sides of the transformer are 22.9 kV and 6.6 kV respectively. Double pancake HTS windings arranged reciprocally will be used for the transformer windings, because of the advantages of insulation and distribution of surge voltage in case of a large power and high voltage transformer. Single HTS wire was used for the primary windings and four parallel wires were used for the secondary windings of the transformer with transposition. A core of the transformer was designed as a shell type core separated with the windings by a cryostat made of GFRP with a room temperature bore. The operating temperature of the HTS windings will be about 65K with sub-cooled liquid nitrogen. A cryogenic cooling system using a GM-cryocooler for this HTS transformer by natural convection of liquid nitrogen was designed. This type of cooling system can be a good option for compactness, efficiency, and reliability of the HTS transformer.

Keywords

References

  1. IEEE Spectrum v.34 no.7 Transforming transformer Sam,P.;Mehta;Nicola Aversa;Michael,S.;Walker
  2. IEEE Transaction on Applied Superconductivity v.11 no.1 AC loss properties of a IMVAsingle-phase HTS power transformer Masataka Iwakuma;Kazuo Funaki, et al.
  3. Hee Joon Lee, Gueesoo Cha, Ji-Kwang Lee, K.yeong-Dal Choi,Kyung Woo Ryu, and Song-yop Hahn, 'Test and characteristicanalysis of an HTS power transformer,' IEEE Transaction onApplied Superconductivity, Vol. 11, No. 1, pp. 1486-1489, 2001
  4. IEEE Transaction on Applied Superconductivity v.11 no.1 Test and characteristic analysis of an HTS power transformer Hee Joon Lee;Gueesoo Cha;Ji-Kwang Lee;Kyeong-Dal Choi;Kyung Woo Rye;Song-yop Hahn
  5. Journal of the Korean Institute of Electrical Engineers v.50 no.2 10 kVA high Tcsuperconductiong power transformer with double pancake windings Hee Joon Lee;Gueesoo Cha;Ji-Kwang Lee;Song-yop Hahan;Kyung Woo Rye;Kyeong-Dal Choi
  6. IEEE Transaction on Applied Superconductivity v.13 Optimization of a IMVA high Tc superconducting transformer windings Chan-Bae Park;Woo-Seok,Kim;Song-yop Hahn;Kyeong-Dal Choi;Hyeong-Gil Joo;Kte-Won Hong
  7. Cyogenics v.42 Design of Cryogenic cooling system for HTS transformer Ho-Myung Chang