TRANSIENT BASED METHOD FOR IDENTIFYING FAULTS IN A HIGH / MEDIUM VOLTAGE ELECTRIC POWER TRANSMISSION SYSTEM, FAULT IDENTIFICATION MODULE AND POWER TRANSMISSION SYSTEM

    公开(公告)号:EP3726681A1

    公开(公告)日:2020-10-21

    申请号:EP19305517.5

    申请日:2019-04-19

    IPC分类号: H02H7/26 H02J3/36

    摘要: The invention relates to a transient based method for identifying faults in an electric power transmission and/ or distribution system (100) having at least one current transmission line (L 12 , L 13 , L 23 ) comprising the following steps :
    - generation of a physical model of the at least one current transmission line (L 12 , L 13 , L 23 ), the physical model depending on the fault parameters and describing the behavior of voltage and/or current transients due to the fault in the at least one current transmission line, fault parameters comprising a fault location parameter on said current transmission line (L 12 , L 13 , L 23 ) and a fault impedance parameter,
    - measurement of voltage and/or currents evolution at least at one specific location in the said power system (100),
    - iterative simulation of the voltage and/or current evolution by the physical model at the measurement point with a set of fault parameters where at each step of iteration, simulated and measured voltage and/or current evolutions are compared and the set of fault parameters is adapted according to a convergence criterion,
    - identification of a fault with its fault parameters when convergence of the measured voltage and/or current evolutions and simulated voltage and/or current evolutions is reached in a limited number of iterations.