非均匀高温超导带材对CORC电缆失超特性的影响研究

doi:10.19595/j.cnki.1000-6753.tces.221256

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Abstract The thermal load of the high temperature superconducting (HTS) CORC cable during quenching threatens the safe and stable operation of the cryogenic system and the cable body. Affected by the preparation process of micron-scale superconducting thin films, multiple HTS tapes wound in parallel with the CORC cable are not uniform. To analyze the influence of non-uniform critical current on quench characteristics of CORC cables, a finite element model based on the three-dimensional T-A formulation was built. Taking the reduced-dimensional tape surface as the solution area and the equivalent current density as the solution variable, the quench model expressed two properties of superconductivity and normal-conductivity, and constructed two constraints of current and potential in the same geometry. A reduced-dimensional thermal model was established in the conductor domain to consider the effects of loss and heat transfer; an equivalent circuit model was established globally to control the current redistribution. Further, the coupled model considered the temperature-dependent terminal resistance to simulate the burnout of tape and abrupt changes in current. The simulation results show that non-uniform HTS tapes affect the dynamic response of current redistribution and accelerate the development of local quench.

Key words： High temperature superconducting CORC cable local quench non-uniformity critical current finite element method

Received: 30 June 2022

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TM26

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	Li Xianhao
	Xu Ying
	Ren Li
	Tang Yuejin
	Peng Sisi

Cite this article:

Li Xianhao,Xu Ying,Ren Li等. Influence of Non-Uniform High Temperature Superconducting Tapes on Quench Characteristics of CORC Cable[J]. Transactions of China Electrotechnical Society, 2022, 37(19): 5044-5055.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.221256 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I19/5044

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