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    Negative-Sequence Network Based Fault Location Scheme for Double-Circuit Multi-Terminal Transmission Lines

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    Date
    2019
    Author
    Ghorbani, Amir
    Mehrjerdi, Hasan
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    Abstract
    The fault resistance and infeeded currents from tapped transmission lines are the two main challenges to establish correct fault location estimation in multi-terminal transmission lines. Also, fault location estimation in double-circuit lines is more complicated than single-circuit lines due to the effect of mutual coupling and inter-circuit faults. This paper proposes a negative-sequence network-based method to estimate the fault location of double-circuit multi-terminal transmission lines. In the presented method, signals are measured in the relay location and then, communication links are not required as it uses only one end measurements. Also, in conventional distance relays, six elements are needed to calculate the fault location in all types of faults. Furthermore, in this method, by using only one element for each transmission line, accurate fault location can be estimated. Also, high fault resistance, mutual coupling, and infeeded currents from tapped transmission lines do not have impact on the performance of the presented scheme. To investigate the effects of the line shunt capacitances on the proposed method, a PI model of the transmission lines is used in all the investigations. Simulation results carried out using MATLAB software indicate that the proposed scheme is able to produce excellent performance for the fault location estimation. - 2018 IEEE.
    DOI/handle
    http://dx.doi.org/10.1109/TPWRD.2019.2906056
    http://hdl.handle.net/10576/14995
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    • Electrical Engineering [‎2846‎ items ]

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