DOI: 10.11799/ce202502017
Fault location technology for coal mine cables based on frequency domain reflection method
NIU Xiaotie
WANG Bin
YANG Deliang
Abstract：Aiming at the difficulty in locate the faults such as aging and damaged cables in coal mine,the cable fault location technology based on frequency domain reflection method was studied.This method injects a frequency domain signal into the cable and obtains data of the reflected signal.The data obtained from the signal is windowed to amplify weak abnormal signals,resulting in high positioning accuracy.The fault type of the cable can be distinguished based on the waveform changes of the reflected signal,and the fault point can be located based on the transmission speed of the signal in the cable and the time difference between the incident signal and the reflected signal.Our results demonstrate that this localization technique enables rapid and high-precision detection of various cable defects.The method amplifies distortion at defect sites,exhibiting enhanced sensitivity to minor imperfections,superior identification capability,and reduced positioning error.Furthermore,the technique shows heightened signal response sensitivity for cables with well-defined reflective signal pathways,such as coaxial cables,metal-shielded cables,and metal-armored cables,enabling more accurate defect locating.
Keywords：frequency domain reflectiondefect locationnondestructive positioningcable faultfault classification
Publication Date：2025-02-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 119-123 )