基于Simulink仿真模型的线缆并线故障检测分析  

Fault Detection and Analysis of Parallel Cables Based on Simulink Simulation Model

作　　者：李文泽 李堃 刘庭凤 赵麒 周骅 李绪诚 LI Wenze;LI Kun;LIU Tingfeng;ZHAO Qi;ZHOU Hua;LI Xucheng(College of Big Data and Information Engineering,Guizhou University,Guiyang 550025,China;School of Mechatronics Engineering,Guizhou Minzu University,Guiyang 550025,China)

机构地区：[1]贵州大学大数据与信息工程学院,贵阳550025 [2]贵州民族大学机械电子学院,贵阳550025

出　　处：《微处理机》2022年第6期19-23,共5页Microprocessors

基　　金：贵州省科技计划项目(黔科合基础[2019]1087号)。

摘　　要：为更好的实现工程上的通信线缆在线故障检测,针对检测通信线缆中是否存在并线故障提出一种通信线缆并线故障在线检测与定位方法。方法利用行波信号二次反射的扩展频谱时域反射法(SSTDR)实现,能够获得较高的精度,提高对线缆中噪声的免疫力,并且能够实现在线检测。基于故障产生的原因与类型,对SSTDR进行理论分析,通过Simulink建立通信线缆并线故障模型并进行仿真验证。实验结果表明该方法能够实现通信线缆并线故障在线检测和定位,并总结出影响检测精度的因素。In order to better realize online fault detection of communication cables in engineering,an online fault detection and location method of communication cables is proposed to detect whether there is parallel fault in communication cables.The method is realized by SSTDR for secondary reflection of traveling wave signal,which can obtain high accuracy,improve immunity to noise in cables and realize online detection.Based on the causes and types of the faults,the SSTDR is analyzed theoretically,and the parallel connection fault model of communication cables is established by Simulink and verified by simulation.The experimental results show that the method can realize online detection and location of communication cable parallel faults,and the factors affecting the detection accuracy are summarized.

关 键 词：通信线缆 扩展频谱时域反射法 SIMULINK仿真 并线检测 

分 类 号：TN913.32[电子电信—通信与信息系统]