Distance Protection Solution for a Converter Controlled Microgrid

Dewadasa, J.; Ghosh, Arindam; Ledwich, G.

Access Status

Fulltext not available

Authors

Dewadasa, J.

Ghosh, Arindam

Ledwich, G.

Date

2008

Type

Conference Paper

Metadata

Show full item record

Citation

Dewadasa, J. and Ghosh, A. and Ledwich, G. 2008. Distance Protection Solution for a Converter Controlled Microgrid, in Proceedings of the Fifteenth National Power Systems Conference (NPSC), Dec 16 2008, pp. 586-591. Bombay, India.

Source Title

National Power Systems Conference (NPSC '08) ITT

Source Conference

National Power Systems Conference (NPSC '08) ITT

URI

http://hdl.handle.net/20.500.11937/39559

Collection

Curtin Research Publications

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.