Distribution network equipment defect sensing device

The invention provides a distribution network equipment defect sensing device comprising a power supply unit used for taking power from a plurality of power supply input ends and outputting converted stable voltage to a current sampling unit, a traveling wave detection unit and a processor unit; the current sampling unit is used for collecting a mutual inductance signal corresponding to the distribution network equipment in real time and converting the mutual inductance signal into a corresponding current signal; the traveling wave detection unit is used for acquiring a current signal and a voltage signal corresponding to the distribution network equipment in real time and converting the current signal and the voltage signal into corresponding voltage sampling signals; and the processor unit is used for displaying and analyzing the collected current signal and the voltage sampling signal, determining an abnormal condition according to an analysis result, and outputting position information of the abnormal sig