Abstract
DC cutoff must be completed within a few ms. Therefore, this paper derives the optimal superconducting wire winding method for efficient current limiting and fast execution of the blocking operation. First, the electromagnetic field characteristics of the superconducting wire according to the winding type were analyzed using the Maxwell program. After that, the EMTDC/PSCAD program was used to analyze the DC blocking performance according to the winding type. Based on the simulation results, as a result of the DC cut-off experiment for each winding type, the spiral type superconductor has a higher resistance rise curve than the helical type, so it is possible to limit the current efficiently by up to 4.01%. In addition, as the magnetic field characteristics are high, the quench of the superconductor operates quickly and the operation time of the circuit breaker is shortened by 0.19 ms, so it can be confirmed that the blocking completion time is also reduced by 0.25 ms.
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