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发明公开
CN109959845A 一种用于对电缆线路局部缺陷进行定位的方法及系统 审中-公开

一种用于对电缆线路局部缺陷进行定位的方法及系统
摘要：
本发明公开了一种用于对电缆线路局部缺陷进行定位的方法，所述方法包括：向被检电缆的首端输入检测信号，获取所述被检电缆的阻抗频谱；选取绝缘的标准电缆，向所述标准电缆的首端输入所述检测信号，获取所述标准电缆的阻抗频谱；通过积分变换，选择积分因子，分别建立包括所述被检电缆的阻抗频谱和所述被检电缆位置的第一函数和包括所述标准电缆的阻抗频谱和所述标准电缆位置的第二函数；根据所述第一函数和所述第二函数，建立所述被检电缆的局部缺陷指标函数，通过所述局部缺陷指标函数曲线的振荡区间，确定所述被检电缆的局部缺陷的位置。
摘要（英）：

The invention discloses a method for positioning a local defect of a cable line. The method comprises the steps that a detection signal is input into the first end of the inspected cable, so as to acquire the impedance spectrum of the inspected cable; an insulated standard cable is selected; the detection signal is input into the first end of the standard cable to acquire the impedance spectrum ofthe standard cable; an integration factor is selected through integral transformation; a first function including the impedance spectrum of the inspected cable and the position of the inspected cableand a second function including the impedance spectrum of the standard cable and the position of the standard cable are established respectively; a local defect indicator function of the inspected cable is established according to the first function and the second function; and the location of the local defect of the inspected cable is determined through the oscillation interval of the local defect indicator function curve.

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