Investigation of the Operation of Active Superconducting Fault Current Limiters in Distribution Networks Connected to Microgrids

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Ghafari Ahmad; Saniei Mohsen; Razaz Morteza; Saffarian Alireza

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Journal Paper

Paper Information

Journal: Journal of Applied Research in Electrical Engineering Year:621 | Volume: | Issue: Page(s): 19-25

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Information Journal Paper

Title

Investigation of the Operation of Active Superconducting Fault Current Limiters in Distribution Networks Connected to Microgrids

Author(s)

Ghafari Ahmad | Saniei Mohsen | Razaz Morteza | Saffarian Alireza | Issue Writer Certificate

Keywords

Fault current limiterQ4

Active superconducting current controllerQ4

Grid-connected microgridQ4

Protective coordinationQ4

Abstract

Increasing the penetration level of distributed generation (DG) units in radial power distribution systems can increase the short-circuit level in these networks, which can, in turn, have destructive effects such as exceeding the tolerable current of the equipment and disrupting the Protective coordination in the network. The active superconducting Fault current limiter (ASFCL) is a new device that can limit fault current using voltage series compensation. This paper discusses the modeling of ASFCL and control strategies including fault detection and converter performance in normal and fault modes. Initially, its performance in limiting the fault current is investigated by simulating a sample three-phase system with ASFCL. In the next step, three operating modes including normal mode, upstream fault mode, and downstream fault mode are proposed to achieve an adaptive FCL that solves these problems in Grid-connected microgrids. The simulation results confirm the proper performance of the ASFCL modes in both fault current limiting and Protective coordination of overcurrent relays in the network.

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