Abstract

High-temperature superconducting (HTS) dc cables become viable for future dc electric power transmissions due to their low loss, light weight, high current density, and high transmission capacity. According to the structure, HTS dc cables are commonly divided into unipolar, bipolar coaxial and multicore types. The HTS critical current is magnetic field dependent, while different HTS dc cable structures have different field distribution features. The influence of different HTS dc cable structures on the critical current is analyzed and compared, in order to provide a basis for the design of a practical HTS dc cable.

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