Partial discharge automatic testing device

The invention relates to a partial discharge automatic testing device, which comprises a power supply module, a first test loop and a second test loop. The first test loop comprises a first measurement impedor and to-be-tested equipment. The second test loop comprises a coupling capacitor and a second measurement impedor. The device further comprises a measurement and control module and a man-machine interaction module. The measurement and control module and the man-machine interaction module are electrically connected. A voltage signal between a first connection point and a second connection point in the first test loop and the second test loop is outputted to the measurement and control module, so that the partial discharge quantity can be calculated. The onset voltage, the onset frequency, the increased amplitude of voltage each time, and other parameters of a full-digital no-partial-discharge high-voltage power supply are preset by the man-machine interaction module. The automatic testing operation is conducted through clicking a Start button. Therefore, the automatic testing function for an entire system is realized.