There are significant differences between OPGW cable (fiber optic composite ground cable) and ADSS cable (all-dielectric self-supporting cable) in several aspects. Here is a detailed comparison of the two cables:

　　I. Structural composition

　　OPGW cable:

　　It is mainly composed of cable cores (fiber optic units) containing optical fibers and metal strands, which may include aluminum-clad steel wires, galvanized steel wires, aluminum alloy wires, and hard aluminum wires.

　　The structure is diverse, and a variety of different designs have emerged.

　　ADSS cable:

　　Mainly composed of cable core, reinforcing wire (or other suitable material) and outer sheath.

　　It is a self-supporting fiber optic cable that does not require an additional support structure.

　　Second, technical parameters and performance

　　OPGW cable:

　　It has high voltage transmission efficiency and can be used for telecommunications data transmission to achieve high-speed data transmission.

　　It has excellent mechanical and environmental performance, such as bulletproof performance, anti-electromagnetic interference, etc.

　　The technical parameters to be considered include rated tensile strength (RTS), maximum tensile strength (MAT), daily average operating tension (EDS), and so on.

　　ADSS cable:

　　With high strength, lightweight, anti-electromagnetic interference, high bandwidth and other characteristics.

　　The main technical parameters include the maximum operating tension, average operating tension and ultimate tensile strength of the cable, etc. These parameters need to be professionally designed according to the natural environment and span of the cable.

　　III. Application scenarios and installation

　　OPGW cable:

　　It is mainly used on voltage grade lines such as 500KV, 220KV, and 110KV.

　　Affected by factors such as power outages and safety, it is mostly used on new lines.

　　Installation requires a power outage, so the installation cost is higher.

　　ADSS cable:

　　It is suitable for a variety of power transmission lines, enabling the coexistence of optical communication and power transmission.

　　Easy to install, no metal brackets required, and no extra space required.

　　The installation cost is relatively low because it doesn't require the replacement of electrical transmission lines, and it can also be switched freely.

　　IV. Other differences

　　Security and maintenance:

　　The OPGW cable is integrated with the ground wire in the power network, which is safe and not easy to be stolen or cut or damaged. At the same time, its mechanical characteristics can meet the long span of the line and are easy to maintain.

　　ADSS fiber optic cables also have high safety and are not affected by electromagnetic interference due to their all-dielectric structure.

　　Service life:

　　OPGW cable and ADSS cable are both designed to have a long service life, but the specific lifespan may be affected by a variety of factors, such as the operating environment and maintenance conditions.

　　In summary, there are significant differences between OPGW cable and ADSS cable in terms of structural composition, technical parameters and performance, application scenarios and installation, and other aspects. Which cable to choose depends on the specific application scenarios and needs.