Abstract
The flux-coupling type superconducting fault-current limiter (FC-SFCL) is discussed in this paper. Considering the shortcomings of conventional inductive and resistive SFCLs, two novel FC-SFCLs with multiple parallel branches are carried out. Considering the characteristics of YBCO tapes in 77-K LN2 environment, the design scheme of the HTS module is studied according to the impedance parameters, the number of parallel branches, and insulation distance. Furthermore, the electromagnetic analysis and parameter calculation of the module are performed. In order to identify the status of the HTS module in normal operating, current limiting, and reclosing processes, the status identification method for HTS module is analyzed. Finally, the possible application of FC-SFCL in power grid is discussed.
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