A graphite composite overhead ground wire

The utility model provides a graphite composite overhead ground wire comprising an inner core composed of first composite graphite lines, a secondary external layer which is composed of secondary composite graphite lines which are longitudinally arranged around the outer side of the inner core and an outermost layer which is obtained by means winding metal fibers around the outermost layer. The secondary external layer completely wraps the inner core. The outermost layer completely wraps the secondary external layer. The first composite graphite lines are obtained by means of twisting composite graphite belts. The second graphite lines are obtained by means of winding the composite graphite belts around the metal fibers. Each composite graphite belt comprises two layers of worm graphite layers and skeleton fibers and carbon fibers laid between the two layers of worm graphite layers, and the skeleton fibers and carbon fibers are wrapped by an adhesive layer. The graphite composite overhead ground wire of the utility model is advantaged by being light in weight, low in resistance, low in inductive reactance and low in skin effect. The graphite composite overhead ground wire of the utility model can enlarge a lightning protection scope of the overhead ground wire when the graphite composite overhead ground wire is matched with a lightning arrester.