Development and test in grid of 630 kVA three-phase high temperature superconducting transformer

Abstract

A 630-kVA 10.5 kV/0.4 kV three-phase high temperature superconducting (HTS) power transformer was successfully developed and tested in a live grid. The windings were wound by hermetic stainless steel-reinforced multi-filamentary Bi2223/Ag tapes. The structures of primary windings are solenoid with insulation and cooling path among layers, and those of secondary windings consist of double-pancakes connected in parallel. Toroidal cryostat is made from electrical insulating glass fiber reinforced plastics (GFRP) materials with room temperature bore for commercial amorphous alloy core with five limbs. Windings are laid in the toroidal cryostat so that the amorphous core operates at room temperature. An insulation technology of double-half wrapping up the Bi2223/Ag tape with Kapton film is used by a winding machine developed by the authors. Fundamental characteristics of the transformer are obtained by standard short-circuit and no-load tests, and it is shown that the transformer meets operating requirements in a live grid.

Keywords

high temperature superconducting (HTS) transformer / Bi2223/Ag tape / amorphous-alloy / windings / liquid nitrogen

References

[1] Tsukamoto O. Roads for HTS power applications to go into the real world: Cost issues and technical issues. Cryogenics, 2005, 45(1): 3–10

[2] Furuse M, Fuchino S, Higuchi N. Investigation of structure of superconducting power transmission cables with LN2 counter-flow cooling.Physica C, 2003, 386: 474–479

[3] Lin Y B, Lin L Z, Gao Z Y, Wen H M, Xu L, Shu L, Li J, Xiao L Y, Zhou L,Yuan G S. Development of HTS transmission power cable. IEEE Transactions on Applied Superconductivity, 2001, 11(1): 2371–2374

[4] Funaki K, Iwakuma M, Kajikawa K, Takeo M, Suehiro J, Hara M, Yamafuji K, Konno M, Kasagawa Y, Okubo K, Yasukawa Y, Nose S, Ueyama M, Hayashi K, Sato K. Development of a 500 kVA-calss oxide-superconducting power transformer operated at liquid-nitrogen temperature. Cryogenics, 1998, 38(2): 211–220

[5] Schwenterly S W, McConnell B W, Demko J A, Fadnek A, Hsu J, List F A, Walker M S, Hazelton D W, Murray F S, Rice J A, Trautwein C M, Shi X, Farrell R A, Bascuhan J, Hintz R E, Mehta S P, Aversa N, Ebert J A, Bednar B A, Neder D J, McIlheran A A, Michel P C, Nemce J J, Pleva E F, Swenton A C, Swets W, Longsworth R C, Johsnon R C, Jones R H, Nelson J K, Degeneff R C, Salon S J. Performance of a 1-MVA HTS demonstration transformer. IEEE Transactions on Applied Superconductivity, 1999, 9(2): 680–684

[6] Zueger H. 630 kVA high temperature superconducting transformer. Cryogenics, 1998, 38(11): 1169–1172

[7] Hatta H, Nitta T, Oide T, Chiba M, Shirai Y, Mochida A. Experimental study on characteristics of superconducting fault current limiters connected in series. Superconductor Science & Technology, 2004, 17(5): 276–280

[8] Elschner S, Breuer F, Noe M, Rettelbach T, Walter H, Bock J. Manufacturing and testing of MCP 2212 bifilar coils for a 10 MVA fault current limiter. IEEE Transactions on Applied Superconductivity, 2003, 13(2): 1980–1983

[9] Barnes P N, Sumption M D, Rhoads G L. Review of high power density superconducting generators: Present state and prospects for incorporating YBCO windings. Cryogenics, 2005, 45(10-11): 670–686

[10] Luongo C A, Baldwin T, Ribeiro P, Weber C M. A 100 MJ SMES demonstration at FSU-CAPS. IEEE Transactions on Applied Superconductivity, 2003, 13(2): 1800–1805

[11] Meinert M, Leghissa M, Schlosser R, Schmidt H. System test of a 1-MVA-HTS-transformer connected to a converter-fed drive for rail vehicles. IEEE Transactions on Applied Superconductivity, 2003, 13(2): 2348–2351

[12] Schlosser R, Schmidt H, Leghissa M, Meinert M. Development of high-temperature superconducting transformers for railway applications. IEEE Transactions on Applied Superconductivity, 2003, 13(2): 2325–2330

[13] Tixador P, Donnier-Valentin G, Maher E. Design and construction of a 41 kVA Bi/Y transformer. IEEE Transactions on Applied Superconductivity, 2003, 13(2): 2331–2336

[14] Wang Y S, Zhao X, Li H D, Lu G H, Xiao L Y, Lin L Z, Guan Y, Bao Q, Xu X, Zhu Z Q, Wang Z K, Dai S T, Hui D. Development of solenoid and double pancake windings for a three-phase 26 kVA HTS transformer. IEEE Transactions on Applied Superconductivity , 2004, 14(2): 924–927

[15] Wang Y S, Zhao X, Li H D, Lu G H, Xiao L Y, Lin L Z, Hui D Dai S D, . A three-phase 26 kVA HTS power transformer. In: Proceedings of the Twentieth International Cryogenic Engineering Conference (ICEC20). Elsevier, 2005, 693–696

[16] Wang Y S, Han J J, Zhao X, Li H, Guan Y, Bao Q, Xiao L, Lin L, Zhu Z, Dai S, Hui D. Development of a 45 kVA single-phase model HTS transformer. IEEE Transactions on Applied Superconductivity, 2006, 16(2): 1477–1480

[17] Iwakuma M, Nishimura K, Kajikawa K, Funaki K, Hayashi H, Tsutsumi K, Tomioka A, Konno M, Nose S. Current distribution in superconducting parallel conductors wound into pancake coils. IEEE Transactions on Applied Superconductivity, 2000, 10(1): 861–864

[18] Magnusson N, Wolfbrandt A. AC losses in high-temperature superconducting tapes exposed to longitudinal magnetic fields. Cryogenics, 2001, 41(10): 721–724

[19] Magnusson N. Semi-empirical model of the losses in HTS tapes carrying ac currents in ac magnetic fields applied parallel to the tape face,Physica C, 2001, 349(3-4): 225–234

[20] Rabbers J J, van der Laan D C, ten Haken B, ten Kate H H J. Magnetisation and transport current loss of a BSCCO/Ag tape in an external AC magnetic field carrying an AC transport current. IEEE Transasctions on Applied Superconductivity, 1999, 9(2): 1185–1188

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