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    Line Protection in Inverter Supplied Networks

    Access Status
    Fulltext not available
    Authors
    Dewadasa, M.
    Ghosh, Arindam
    Ledwich, G.
    Date
    2008
    Type
    Conference Paper
    
    Metadata
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    Citation
    Dewadasa, M. and Ghosh, A. and Ledwich, G. 2008. Line Protection in Inverter Supplied Networks, in - (ed), 2008 Australasian Universities Power Engineering Conference, AUPEC 2008, Dec 14 2008. Australia: Institute of Electrical and Electronics Engineers ( IEEE ).
    Source Title
    2008 Australasian Universities Power Engineering Conference, AUPEC 2008
    Source Conference
    2008 Australasian Universities Power Engineering Conference, AUPEC 2008
    ISBN
    978-142444162-4
    URI
    http://hdl.handle.net/20.500.11937/16404
    Collection
    • Curtin Research Publications
    Abstract

    New protection methods are required to protect a distribution system when supplied by current limited converters. In this paper, a method of converter control is proposed to limit the current by reducing the voltage in the faulted phase or phases while keeping the voltage of the healthy phases unaltered. Unsymmetrical fault analysis is performed to calculate the sequence currents and voltages at the relay location, when system is supplied by a converter. Based on that converter control, distance relay performances have been evaluated in both grid-connected and islanded mode operations. Distance relay, combined with MHO and negative sequence impedance directional characteristics, is proposed as a protection scheme for the distribution system for different types of faults under the current limited environment. The results are validated through PSCAD/EMTDC simulation and MATLAB calculations.

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