The primary purpose of OPGW (Optical Overhead Ground Wire) is to integrate power transmission and communications. It serves as both a grounding conductor for overhead power lines and a high-speed fiber-optic communication line. Its applications are wide-ranging, including substations, transmission lines, and smart grid construction. It is also used in communications applications such as high-speed wide area networks (WANs), data centers, and submarine cables.

Application :
Power System Applications:
Grounding Protection: Installed atop high-voltage transmission towers, OPGW acts as an overhead ground wire to effectively shield and disperse lightning currents, protecting power lines.
Power System Communications: Transmits control, protection, and monitoring signals (such as SCADA signals), as well as audio and video information required by the power system itself.
Smart Grid Construction: Supports the high-speed data transmission and remote monitoring requirements of smart grids.
Communication Applications:
Data Transmission: Transmits audio, video, and data signals, meeting the needs of high-speed, high-capacity communications.
Network Construction: Suitable for applications requiring high-speed, high-bandwidth transmission, such as WANs and data centers.
Fiber Leasing: Utilities can earn additional revenue by leasing excess "dark fiber" to telecommunications companies. Other Applications:
Transportation: Suitable for road and rail communications, signal control, security monitoring, etc.
Submarine Communications: Suitable for laying submarine optical cables, providing reliable communications even in harsh underwater environments.