High-altitude warning system for overhead line

The utility model provides a high-altitude warning system for an overhead line. An overhead cable is arranged between two overhead iron towers; a warning mechanism is arranged close to the top of the overhead iron tower; the warning mechanism is provided with an LED warning lamp. An induction magnetic ring coil is sleeved on an overhead cable of the overhead iron tower; the output end of the induction magnetic core coil is connected with the input end of the power supply anti-surge protection module, the output end of the power supply anti-surge protection module is connected with the input end of the AC-DC rectification circuit, the output end of the AC-DC rectification circuit is connected with the input end of the filter circuit, and the output end of the filter circuit is connected with the input end of the discharge module. The output end of the discharge module is connected with the LED warning lamp through the first DC-DC circuit, so that the electric energy induced by the induction magnetic core coil