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    METHOD AND APPARATUS FOR FAULT IDENTIFICATION IN A POWER TRANSMISSION LINE
    2.
    发明公开
    METHOD AND APPARATUS FOR FAULT IDENTIFICATION IN A POWER TRANSMISSION LINE 审中-公开
    方法和设备用于电力输电线路故障识别

    公开(公告)号：EP2319151A4

    公开(公告)日：2013-12-25

    申请号：EP08800703

    申请日：2008-08-29

    申请人： ABB RESEARCH LTD

    发明人： YANG YING ,  SU BIN ,  JING LEI ,  LIU QIANJIN

    IPC分类号： H02H7/26 ,  G01R31/08 ,  H02H3/06

    CPC分类号： H02H3/066 ,  G01R31/085

    摘要： A method and apparatus for fault identification in a transmission line are provided. The method may include measuring at an end of the transmission line when the transmission line has a fault to obtain a measured signal g(t), comparing the measured signal g(t) with a predefined standard signal f(t), the predefined standard signal f(t) having beat frequency characteristic; and identifying that the fault is a transient fault if the measured signal g(t) matches the predefined standard signal f(t) according to a result of the comparison, or the fault is a permanent fault if the measured signal g(t) does not match the predefined standard signal f(t) according to the result of the comparison.