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Self-shielding high-temperature superconducting (HTS) DC cables made of REBCO tapes can almost eliminate the magnetic field within the cable layers, which can improve the uniformity of current distribution and magnetic field. In this paper, two self-shielding HTS DC cables made of REBCO tapes with different-direction currents under fault current are simulated based on H -formula and external circuit model. And the abilities of limiting fault current are also compared. Results show the design of "+–+" can limit DC fault currents better in restricting both the rising rate and the peak value of fault current. Self-shielding HTS cable can inhibit fault currents due to its magnetic shielding. And the "+–+" configuration performs better for limiting DC fault current than the "+-+-" configuration.
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Pi et al. (2024) studied this question.
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