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    Power capacity management of dynamic voltage restorers used for voltage sag and unbalance compensation

    Access Status
    Fulltext not available
    Authors
    Far, M.
    Pashajavid, Ehsan
    Ghosh, Arindam
    Date
    2018
    Type
    Conference Paper
    
    Metadata
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    Citation
    Far, M. and Pashajavid, E. and Ghosh, A. 2018. Power capacity management of dynamic voltage restorers used for voltage sag and unbalance compensation, Australasian Universities Power Engineering Conference, AUPEC 2017, pp. 1-6: IEEE.
    Source Title
    2017 Australasian Universities Power Engineering Conference, AUPEC 2017
    Source Conference
    Australasian Universities Power Engineering Conference, AUPEC 2017
    DOI
    10.1109/AUPEC.2017.8282445
    ISBN
    9781538626474
    School
    School of Electrical Engineering, Computing and Mathematical Science (EECMS)
    URI
    http://hdl.handle.net/20.500.11937/73417
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 IEEE. Voltage sag and voltage unbalance can be considered as the major power quality concerns in low voltage distribution networks. A dynamic voltage restorer (DVR) is commonly used to provide voltage support for load buses containing critical loads. In practice, however, the limited power capacity of these devices can highly deteriorate the desirable regulation expected from them, especially under severe disturbances. This paper proposes an efficient fuzzy logic based capacity management scheme for DVRs in mitigating voltage disturbances. The strategy can appropriately organize the DVR operation complying with the features and priorities given by the designer. A novel approach to derive the compensation reference signals is presented in which the mitigation factors associated with the disturbances are adjusted by the fuzzy scheme. Further, a single-step prediction horizon technique is implemented to regulate the switching commands of the DVR. Various simulation cases are studied in MATLAB to demonstrate efficacy of the proposal.

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