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    A new algorithm to stabilize distance relay operation during voltage-degraded conditions

    Access Status
    Fulltext not available
    Authors
    Sharifzadeh, Mostafa
    Lesani, H.
    Sanaye-Pasand, M.
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Sharifzadeh, M. and Lesani, H. and Sanaye-Pasand, M. 2014. A new algorithm to stabilize distance relay operation during voltage-degraded conditions. IEEE Transactions on Power Delivery. 29 (4): pp. 1639-1647.
    Source Title
    IEEE Transactions on Power Delivery
    DOI
    10.1109/TPWRD.2013.2285502
    ISSN
    0885-8977
    School
    Dept of Mining Eng & Metallurgical Eng
    URI
    http://hdl.handle.net/20.500.11937/27712
    Collection
    • Curtin Research Publications
    Abstract

    This paper deals with the possible operation of distance relays during impending voltage instability and presents a new method to prevent its maloperation in power system voltage-degraded conditions. The proposed method successfully discriminates between fault occurrence and system incidents during stressed voltage conditions, even for the most severe cases such as sudden equipment outages and high impedance faults. The proposed scheme successfully blocks maloperation of relay zone 3 where the degraded condition is detected. It is based on the rates of change of voltage and current magnitudes. These values are different during fault occurrences in comparison with the corresponding values during stressed conditions system incidents. Simulation results verify the effectiveness of the proposed method.

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