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    Utilization of a mixture of CTs and current sensors in line differential protection applications

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    CIRED 2019 - 292.pdf (496.0Kb)
    Paper number
    292
    Conference name
    CIRED 2019
    Conference date
    3-6 June 2019
    Conference location
    Madrid, Spain
    Peer-reviewed
    Yes
    Metadata
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    Authors
    Raipala, Ontrei, ABB Oy, Finland
    Hovila, Petri, ABB Oy, Finland
    Leminen, Janne, ABB Oy, Finland
    Farughian, Amir, University of Vaasa, Finland
    Memon, Aushiq, University of Vaasa, Finland
    Kauhaniemi, Kimmo, University of Vaasa, Finland
    Abstract
    The popularity of Rogowski sensors is increasing due to their advantages over conventional CTs. Consequently, network utilities may sometimes end up facing a question whether it would be possible to use line differential protection on a line where the current measurements at the local end are based on CTs, whereas, the remote end measurements are based on current sensors. The main challenge in the use of such a combination in line differential protection applications is that while CTs may saturate, Rogowski sensors do not. Such issues were studied in a hardware-in-the-loop simulation setup. Based on the studies conducted, it appears that the use of mixture of CTs and current sensors for line differential protection applications is a feasible option provided that the CTs are properly dimensioned and that the protection settings are carefully chosen.
    Publisher
    AIM
    Date
    2019-06-03
    Published in
    • CIRED 2019 Conference
    Permanent link to this record
    https://cired-repository.org/handle/20.500.12455/808
    http://dx.doi.org/10.34890/1026
    ISSN
    2032-9644
    ISBN
    978-2-9602415-0-1

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