Optical Ground Wire (OPGW) is a dual-functioning cable used in overhead power transmission lines. It combines the roles of a traditional ground wire with the capabilities of an optical fiber cable, providing both electrical grounding and high-speed telecommunications.
Features:
- Dual Functionality: OPGW serves as both a ground wire and an optical fiber cable, replacing traditional static or shield wires on overhead transmission lines.
- Structural Integrity: It features a robust design with a central tube (often made of stainless steel or aluminum) surrounded by layers of steel and aluminum alloy wires, offering excellent crush resistance and mechanical durability.
- Optical Fiber Protection: The hermetically sealed tubes protect the optical fibers from environmental factors like moisture and extreme temperatures.
- Telecommunications Capability: OPGW contains multiple optical fibers, allowing for high-speed data transmission over long distances.
- Electrical Fault Handling: It provides a path to ground during electrical faults without damaging the optical fibers.
Applications:
- Power Transmission Lines: OPGW is used in high-voltage transmission lines to shield conductors from lightning and provide a telecommunication path.
- Telecommunications: The optical fibers within OPGW can be used for internal utility communications or leased to third parties for high-speed data transmission between cities.
- Replacement of Traditional Ground Wires: OPGW can replace existing static or shield wires, offering enhanced functionality without significant structural changes.
