Unmanned aerial vehicle power supply system

The invention provides an unmanned aerial vehicle power supply system, comprising an unmanned aerial vehicle dispatching center, a plurality of high-voltage line electricity taking devices, and unmanned aerial vehicle electricity supplementing platforms. The plurality of high-voltage line electricity taking devices are respectively installed on overhead line poles spaced apart by a predetermined distance, each high-voltage line electricity taking device comprises a high-voltage drain line, a voltage transformer electricity taking module, a first switch, an induction coil electricity taking module, a second switch and an AC/DC converter; each unmanned aerial vehicle electricity supplementing platform comprises a parking apron, a DC/DC converter and a first positioning module are arranged inthe parking apron, a first charging input end of the parking apron is connected with the AC/DC converter, and a power supply output end of the parking apron matches an electricity taking input end ofan unmanned aerial vehicl