Fault Location of Cable Lines Based on Differential Time Reversal Operator
The traditional traveling wave method is often faced with the problems of many branches and complex reflected signals in the fault location of cable lines in distribution networks,and the actual effect is poor.Therefore,a cable fault location approach based on a differential time reversal operator is presented.Based on the multi-port scattering parameters of fault and faultless lines,a differen-tial time reversal operator in the frequency domain is constructed to eliminate the influence of line topology and end reflection.Through the eigenvector decomposition of the operator matrix,the inversion waveform is injected from each port of the line.Com-bining the time domain response and spatial energy spectrum of each part of the line,the fault point location is finally achieved.
cable fault locationdifferential time reversal operatorscattering parametersspatial energy spectrum
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