Optical fiber composite overhead ground wire (OPGW) is an overhead ground wire containing optical fibers. It has multiple functions such as overhead ground wire and optical communication. It is mainly used for communication lines of 110kV, 220kV, 500kV, 750kV and new overhead high-voltage transmission systems. It can also be used to replace existing ground wires of old overhead high-voltage transmission systems, add optical communication lines, conduct short-circuit currents and provide protection against lightning strikes. Special structures can be customized according to user needs.