Instrument control cable short circuit fault rapid positioning method based on sweep frequency impedance

An instrument control cable short circuit fault rapid positioning method based on sweep frequency impedance comprises the steps that the position of a fault cable short circuit fault is calculated by measuring the sweep frequency impedance spectrum first resonance peak frequency of a fault cable and a healthy cable with the same model and known length. The method is simple to operate, can efficiently and quickly calculate the short-circuit fault position of the instrument control cable by measuring the first resonance peak frequency of the sweep frequency impedance of the cable without impedance spectrum feature extraction and signal processing, and quickly and accurately positions the short-circuit fault position in the instrument control cable. And economic loss caused by out-of-control equipment is reduced. 一种基于扫频阻抗的仪控电缆短路故障快速定位方法，其包括：通过测量故障电缆和型号相同、长度已知的健康电缆的扫频阻抗谱第一谐振峰值频率，计算故障电缆短路故障的位置。该方法操作简单，可在不进行阻抗谱特征提取和信号处理的前提下，通过测量电缆扫频阻抗第一谐振峰值频率对仪表控制电缆短路故障位置进行高效快速计算，快速准确定位仪表控制电缆中的短路故障位置，减少因设备失控造成的经济损失。