Method for detecting partial discharge of high-voltage switch cabinet

The invention relates to the technical field of high-voltage switch cabinet detection, in particular to a high-voltage switch cabinet partial discharge detection method, which avoids switch cabinet sudden accidents and switch cabinet insulation fault live detection through an ultrasonic partial discharge detection method and a transient ground voltage partial discharge detection method. The insulation condition of the switch cabinet can be detected under the condition of normal operation of the switch cabinet, early insulation defects can be found in time, and major insulation accidents are avoided. The insulation state maintenance of the switch cabinet is realized, and the switch cabinet can be maintained in a targeted manner by means of insulation fault live-line detection of the switch cabinet, so that blind power-off maintenance is avoided. The maintenance quality of the switch cabinet is improved, and strict detection tests need to be carried out after field installation and field maintenance of the swit