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    Droop Control of Converter-Interfaced Microsources in Rural Distributed Generation

    Access Status
    Fulltext not available
    Authors
    Majumder, R.
    Ledwich, G.
    Ghosh, Arindam
    Chakrabarti, S.
    zare, F.
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Majumder, R. and Ledwich, G. and Ghosh, A. and Chakrabarti, S. and zare, F. 2010. Droop Control of Converter-Interfaced Microsources in Rural Distributed Generation. IEEE Transactions on Power Delivery. 25 (4): pp. 2768-2778.
    Source Title
    IEEE Transactions on Power Delivery
    ISSN
    08858977
    URI
    http://hdl.handle.net/20.500.11937/25914
    Collection
    • Curtin Research Publications
    Abstract

    This paper proposes new droop control methods for load sharing in a rural area with distributed generation. Highly resistive lines, typical of rural low voltage networks, always create a big challenge for conventional droop control. To overcome the conflict between higher feedback gain for better power sharing and system stability in angle droop, two control methods have been proposed. The first method considers no communication among the distributed generators (DGs) and regulates the converteroutput voltage and angle ensuring proper sharing of load in a system having strong coupling between real and reactive power due to high line resistance. The second method, based on a smattering of communication, modifies the reference output voltage angle of the DGs depending on the active and reactive power flow in the lines connected to point of common coupling (PCC). It is shown that with the second proposed control method, an economical and minimum communication system can achievesignificant improvement in load sharing. The difference in error margin between proposed control schemes and a more costly high bandwidth communication system is small and the later may notbe justified considering the increase in cost. The proposed control shows stable operation of the system for a range of operating conditions while ensuring satisfactory load sharing.

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