Research on Cable Fault Detection Algorithm Based on SSTDR

In view of the influence of the current accuracy of cable fault detection method for fault detection and localization results and feasibility,this paper uses the Simulink simulation platform for the establishment of Matlab cable fault model. The cable system model is established to study the spread spectrum time domain reflectometry( SSTDR) methods,using direct sequence spread spectrum signal as the testing signal on the cable transmission to judge the fault distance according to the time difference and other parameters. The feasibility of the cable fault location method is verified by simulation of different modulation methods,indicating that the cable fault location based on the BPSK and QPSK has the best effect.