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Distance protection solution for a converter controlled microgrid

Dewadasa, Manjula, Ghosh, Arindam, & Ledwich, Gerard F. (2008) Distance protection solution for a converter controlled microgrid. In National Power Systems Conference, 16th-18th December 2008, Mumbai, India.

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Abstract

Distance relay response in the presence of a converter dominated microgrid system has been analyzed in this paper. Converter structure and control mechanism are presented and a new method is proposed to limit fault currents in faulted phase/phases by reducing the converter output voltage. A method of analyzing unsymmetrical supply voltage using symmetrical component theory is proposed, where it has been assumed that voltage source converter (VSC) supplies unbalanced voltages in the event of a fault. Performance of distance relays with Mho characteristics are evaluated in a radial distribution feeder for both phase and earth unbalanced faults. The results are validated through PSCAD simulation and MATLAB calculations

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ID Code: 17565
Item Type: Conference Paper
Additional Information: The contents of this paper can be freely accessed online via the conference's web page (see hypertext link).
Keywords: Microgrid, Distance Protection, Symmetrical components, Apparent Impedance, Unsymmetrical Faults
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Industrial Electronics (090603)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Renewable Power and Energy Systems Engineering (excl. Solar Cells) (090608)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2008 Indian Institute of Technology-Bombay
Deposited On: 06 Feb 2009 14:46
Last Modified: 29 Feb 2012 23:44

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