The low-voltage pulse method can effectively locate the fault in the cable and judge the type of the fault. The traditional low-voltage pulse method needs to separate the pulse artificially

and it is difficult to directly locate the fault in the cable. In order to solve this problem

the time reversal technology is introduced in low-voltage pulse method for locating the fault. Firstly

the principle of the proposed method is introduced and its calculation process are given. And then

the simulation results prove that the proposed method can effectively locate the fault in the cable and judge the type of the fault without human intervention. Finally

in the laboratory

the proposed method is tested in a 105 m XLPE cable with a local defect. The measurement results confirm the feasibility and effectiveness of the proposed method.