Abstract
Due to the increasing penetration level of microgrids (MGs), it becomes a critical issue for MGs to help sustaining power system stability. Therefore, this paper is aimed at investigating comparison between transient analysis AC and DC Microgrid connected to the grid in case of using Superconducting Fault current limiter (SFCL) at the connection point of Microgrid and grid. When the three-phase-to-ground fault is applied at connection point of Microgrid and grid, the SFCL minimized the oscillating currents and the active and reactive power of AC and DC microgrid to range 20-30%. The transient analysis of AC microgrid is better than DC microgrid except the values currents and the active and reactive power are very high during the fault. The time required to recover pre-fault values of AC microgrid (0.1 sec) is less than those time of DC microgrid (3 sec).
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