Fabrication of HTS dc Bias Coil for 35kV/90MVA SFCL |
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Authors: | Jing-Yin Zhang Wei-Zhi Gong Zheng-Jian Cao Hui Hong Bo Tian Yang Wang Jian-Zhong Wang Xiao-Ye Niu Ying Xin |
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Affiliation: | 1.Innopower Superconductor Cable Co.,Ltd.,Longsheng Industrial Park,Beijing Economic &Technological Development Area,Beijing,100176,China |
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Abstract: | For a saturated iron core fault current limiter, superconductor is the only suitable material to make the dc bias coil, especially when the device is used in a high voltage power grid. Commonly, superconducting wires are used to wind the dc bias coil. Since the performance of the wires changes greatly under magnetic fields, the calculation of the field spatial distraction is essential to the optimization of the superconducting magnet. A superconducting coil with 141000 ampere-turns magnetizing capacity made of 17600 meters of BSCCO 2223 HTS tapes was fabricated. This coil was built for a 35kV/90MVA saturated iron-core fault current limiter. Computer simulations on magnetic field distribution were carried out to optimize the structural design, and experiments were done to verify the performance of the coil. The configuration and the key parameters of the coil will be reported in this paper. |
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Keywords: | HTS coil superconducting fault current limiter superconducting magnets |
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