Partial discharge detection device of switch cabinet

The utility model relates to a partial discharge detection device of a switch cabinet. The partial discharge detection device comprises four kinds of sensors for measuring the partial discharge such as a high frequency sensor, an ultrasonic sensor, a high frequency current sensor and a TEV sensor. The data of various sensors is collected by a monitoring system, furthermore the partial discharge amount in the switch cabinet is conveniently and effectively measured, and the partial discharge position is precisely positioned, thus the data monitor reference is provided for the evaluation of the insulation performance of the switch cabinet.