Active anti-galloping device of overhead transmission line

The utility model provides an active anti-galloping device of an overhead transmission line. The active anti-galloping device comprises a fixing bracket, a monitoring control mechanism and an executing mechanism, wherein the fixing bracket is mounted on a lead of the overhead transmission line; the monitoring control mechanism and the executing mechanism are arranged on the fixing bracket; the monitoring control mechanism is used for monitoring the galloping acceleration of the lead of the overhead transmission line and controlling the executing mechanism according to the galloping acceleration of the lead; the executing mechanism comprises a heavy hammer which can move up and down along the fixing frame; and the executing mechanism is used for receiving an instruction of the monitoring control mechanism and controlling the heavy hammer to move up and down along the fixing frame, so that force of inverse motions of the heavy hammer and force of galloping the lead are mutually cancelled out.