航空电缆故障在线检测与定位技术研究

Low Voltage Network Cable Fault Detection and Location On-line Technology Research

在综述了电缆故障类型和现有电缆故障检测与定位方法的基础上,引入了两种电缆故障在线检测与定位新方法——序列时域反射法(STDR)和扩散频谱时域反射法(SSTDR),分析研究了两种方法的原理,选取了一种适用于两种方法的相关算法——改进的实序列频域相关算法,并在MATLAB中建立了仿真模型,对两种方法进行了仿真验证,并进行了比较,对实际的应用具有理论指导意义。

This article introduces two new cable fault detection and location on line methods-sequence time domain reflectometry method（STDR）and spread spectrum time domain reflectometry method（SSTDR）-based on an overview of the cable fault type and the existing methods of cable fault detection and location.And then analyzes the principles of these two approaches,selects a correlation algorithm applicable to both of these two methods so as to improve frequency-domain correlation algorithm for Real-valued sequences.At last,a simulation model in MATLAB is established.These two methods are simulated,validated,and compared.It＇s theoretical guidance for practical application.