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

作　　者：Yinshun WANG Xiang ZHAO Junjie HAN Huidong LI Yin GUAN Qing BAO Xi XU Shaotao DAI Naihao SONG Fengyuan ZHANG Liangzhen LIN Liye XIAO 

机构地区：[1]Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100080,China [2]Technical Center of Tebian Electric Apparatus Stock Co.,Ltd,Changji 831100,China [3]Beijing Key Laboratory of High Voltage and EMC,School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China

出　　处：《Frontiers of Electrical and Electronic Engineering in China》2009年第1期104-113,共10页中国电气与电子工程前沿（英文版）

基　　金：supported by the Ministry of Science and Technology of China (2002AA306381);Tebian Electric Apparatus Stock Co.,Ltd (TBEA)and the‘100 Talents Project’of Chinese Academy of Sciences,China (0640111C11).

摘　　要：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 steelreinforced 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.

关 键 词：high temperature superconducting(HTS)transformer Bi2223/Ag tape amorphous alloy WINDINGS liquid nitrogen 

分 类 号：TG1[金属学及工艺—金属学]