Research on Fault Diagnosis Method of Power Cable Network Based on Time Domain Reflectometry
Aiming at the key challenge of maintaining large-scale aging power cable networks,the physical model of signal trans-mission in power cables was described in detail to extract the fault characteristics of reflected signal and transmitted signal.The fault diagnosis method of power cable network based on time domain reflection method was studied to realize the rapid identification and lo-cation of cable network faults.Taking the minimum unit Y-type cable network as the research object,and establishing its physical model,the signal propagation path and impedance mismatch information were reflected by the reflected signal and transmitted signal between the measuring points in the distributed detection,which studied the cable fault diagnosis method based on the multi-source in-formation fusion.The fault simulation model of Y-type cable network was built in Matlab/Simulink software environment.The ex-perimental results show the method verifies the effectiveness and application range of in the different trunk and branch lines.The rela-tive error of the measured fault distance is within 1％.
power cablescable networkfault diagnosistime domain reflectometrytransmission signal
万方数据
维普
