Abstract
Superconducting coil is the core component of the SFCL(superconducting fault current limiter), and its winding process determines the reliability and stability of the SFCL. At the same time, the inductance of superconducting coil directly affects the response speed of the SFCL to cut off fault current. Combining with the practical engineering constraints, this paper takes a single coil of 25-meter tape as prototype to wind the superconducting coil without inductance. The traditional insulating tape structure is improved to be sawtooth type, which effectively avoids the up-and-down sliding phenomenon in the winding and testing of the tape and realizes the protection of the tape. Then, with the help of finite element simulation software, a simulation model is established to simulate the inductance of the wound superconducting coil. Finally, the step method is used to verify the inductance of the superconducting tape coil. The test results are in good agreement with the simulation results, which verifies the rationality of the simulation model hypothesis and the accuracy of the simulation results, and has certain guiding significance for the subsequent non-inductive design and simulation analysis of multi-coil superconducting coils.
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