Power distribution network grounding robot system and grounding method

The invention discloses a power distribution network grounding robot system and a grounding method, the power distribution network grounding robot system comprises an unmanned aerial vehicle unit, a robot unit and an insulated sling unit, the robot unit is internally provided with a first coiling module, an electricity testing module, a grounding module and a mechanical arm module; the unmanned aerial vehicle unit is used for throwing and hanging the sling unit on an electric wire of a power distribution network, one end of the sling unit is fastened on the ground, the other end of the sling unit is connected with the first winding module, and the mechanical arm module is matched with the electricity testing module; the mechanical arm module is used for clamping the electricity testing module to perform electricity testing operation on a wire; and the mechanical arm module is matched with the grounding module, and is used for clamping the grounding module through the mechanical arm module ...