High-voltage cable distributed partial discharge testing device

The utility model discloses a distributed partial discharge testing device for a high-voltage cable, and belongs to the related field of high-voltage cables. The distributed partial discharge testing device for the high-voltage cable comprises a main box body which is internally provided with a discharge part and one side of which is provided with a first opening; the connecting port is arranged in the first opening of the main box body, the connecting port is of a through structure, and the through structure of the connecting port communicates the interior of the main box body with the outside; the fastening component is used for clamping the cable, is arranged in the through structure of the connecting port and comprises a driving part, vertical fixing parts and lateral fixing parts, the vertical fixing parts are arranged on the upper wall surface and the lower wall surface of the through structure of the connecting port in a sliding manner, and the lateral fixing parts are arranged on the two side wall sur