Title: The impact of the protection scheme of converter-connected distributed generation on power system transient stability

Authors: M. Reza, J. Morren, F.A. Viawan, W.L. Kling

Addresses: Electrical Power System Laboratory, Faculty of Electrical Engineering, Mathematics and Computer, Science, Delft University of Technology, Mekelweg 4, 2628 CD, Delft, The Netherlands. ' Electrical Power Processing Laboratory, Faculty of Electrical Engineering, Mathematics and Computer, Science, Delft University of Technology, Mekelweg 4, 2628 CD, Delft, The Netherlands. ' Division of Electric Power Engineering, Chalmers University of Technology, Gothenburg, Sweden, S-412 96 Gothenburg, Sweden. ' Electrical Power System Laboratory, Faculty of Electrical Engineering, Mathematics and Computer Science, Delft University of Technology, Mekelweg 4, 2628 CD, Delft, The Netherlands

Abstract: In this paper the impact of the protection scheme of converter-connected (power electronic-interfaced) Distributed Generation (DG) on power system transient stability is investigated. Two simulation setups are used for this purpose. In the first setup, a small/simple test system is used and the converter-connected DG is modelled as a practical three-phase full-bridge Voltage Source Converter (VSC). In the latter, a medium-size power system is considered and the converter-connected DG is represented as simple PQ source. In both setups, two possible protection schemes of converter-connected DG are studied. The first one disconnects the DG from the power network during a fault, while the second one keeps the DG connected.

Keywords: converter-connected distributed generation; DG protection schemes; power systems; transient stability; power electronic interfaces; simulation; voltage source converters.

DOI: 10.1504/IJETP.2007.015511

International Journal of Energy Technology and Policy, 2007 Vol.5 No.5, pp.550 - 568

Published online: 23 Oct 2007 *

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