An improved protection strategy for microgrids

Gopalan, Sachit, Sreeram, Victor, Iu, Herbert, & Mishra, Yateendra (2013) An improved protection strategy for microgrids. In 2013 4th IEEE/PES Innovative Smart Grid Technologies Europe (ISGT EUROPE), IEEE, Lyngby, Denmark, pp. 1-5.

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Microgrids (MG) enable the integration of low capacity renewable energy resources with distribution systems. A recently proposed protection scheme for MGs utilising undervoltage, High Impedance Fault (HIF) detection, directional protection modules, and communication links significantly reduces the fault clearing time compared to previous schemes. In this paper, the effect of replacing undervoltage protection with differential protection in a scheme that also contains HIF and directional protection modules is studied. The MG model used in this study includes a diesel, wind, and two photovoltaic (PV) microsources. The alternative protection schemes are evaluated by simulation. It is found that the protection scheme consisting of differential, HIF detection, and directional protection modules is more effective compared to the alternative in protecting the MG from some fault conditions such as the phase-A-to-ground, phase-B-to-C, and phase-B-to-C-to-ground.

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ID Code: 66091
Item Type: Conference Paper
Refereed: Yes
Keywords: differential protection, microgrid, protection, undervoltage protection
DOI: 10.1109/ISGTEurope.2013.6695477
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 14 Jan 2014 01:23
Last Modified: 16 Jan 2014 21:33

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