For the construction of the smart grid, protection needs to be accurately measured, and the current transformer needs to correctly transfer the transient process. The transient process of nonlinear ferromagnetic elements mainly includes the transformer inrush current and CT saturation. Differential protection misoperation is rarely caused by a single factor. It involves the coupling effect between the transformer inrush current and CT saturation. In this paper, the magnetizing inrush current and sympathetic inrush current and the CT saturation are studied from the aspects of principle analysis and digital simulation. Based on an accident, the coupling between the transformer inrush and CT saturation and its impacts on the differential protection are analyzed. Finally, methods to this problem are discussed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Study on transformer inrush current and CT saturation as well as the impact of their coupling effect on protection


    Contributors:
    Wang, Youhuai (author) / Yang, Zengli (author) / Zhou, Hubin (author) / Cao, Wenbin (author) / Yin, Xianggen (author) / Guo, Qian (author)


    Publication date :

    2017-08-01


    Size :

    485356 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    INRUSH CURRENT LIMITER

    VAN DIJK LUC | European Patent Office | 2021

    Free access


    INRUSH CURRENT LIMITING SYSTEM

    TAKAGI YASUSHI / MURAKAMI TSUKASA | European Patent Office | 2020

    Free access

    INRUSH CURRENT LIMITING SYSTEM

    TAKAGI YASUSHI | European Patent Office | 2020

    Free access