ADSS Optical Cable (All-Dielectric Self-Supporting Stranded Optical Fiber) Cable) and OPGW (Optical Fiber Composite Overhead Grounds Wire) are two different types of fiber optic cables that differ significantly in terms of structure, technical parameters, installation location, and cost. Here is a detailed comparison of the two types of fiber optic cables:

　　First, structural differences

　　ADSS cable:

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

　　The cable core contains optical fibers, the reinforcement cable is used to provide additional mechanical strength, and the outer sheath protects the cable from external damage.

　　ADSS fiber optic cable is a kind of non-metallic fiber optic cable, and its reinforcing core is usually made of high-strength polymer materials, such as polyimide and nylon.

　　OPGW cable:

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

　　The structure is diverse, and hundreds of different structures have emerged, but they can be mainly classified into several types such as aluminum tube type, frame aluminum type, tube type, and steel tube type.

　　The OPGW cable places the optical fiber in the ground wire of the overhead high-voltage transmission line, which has the dual functions of ground wire and communication.

　　II. Comparison of technical parameters

　　Rated tensile strength (RTS):

　　ADSS cable: mainly calculate the sum of the strength of the aramid and other bearing sections, which is an important parameter for the calculation and control of the hardware configuration and safety factor.

　　OPGW cable: It also has a rated tensile strength, but the specific value depends on the structure.

　　Maximum tensile strength (MAT):

　　According to the theory of meteorological conditions, the maximum tension of OPGW and ADSS is calculated, which is an important basis for calculation and control of sag, tension, span and safety factor.

　　Daily average operating tension (EDS):

　　Also known as the annual average working tension, it is the average tension generated by OPGW and ADSS during long-term operation.

　　DC resistance:

　　The calculated value of the parallel resistance of all conductive components in the OPGW cable at 20 ° C should be as close as possible to the opposite ground wire.

　　ADSS cables do not meet this parameter requirement.

　　Short circuit current:

　　The maximum current that OPGW cable can withstand when it is short-circuited (generally referred to as single-phase). The start and end temperature of the short-circuit current is related to the short-circuit current time.

　　ADSS cables also do not meet this parameter requirement.

　　III. Installation location and cost

　　Installation location:

　　ADSS fiber optic cable: more suitable for installation in power distribution transmission environments with live wires, because it does not require additional support structures and can be directly suspended from power facilities such as utility poles and light poles.

　　OPGW optical cable: mainly used in high-voltage voltage grade lines such as 500KV, 220KV, 110KV, etc., affected by power outages, safety and other factors, it is mostly used in new lines.

　　Installation cost:

　　ADSS cable: The installation cost is relatively low because it does not require the replacement of electrical transmission lines and can be switched freely.

　　OPGW cable: The installation cost is high, a large amount of money needs to be invested at one time, and power outages are necessary during construction, resulting in large power outage losses.

　　In summary, there are significant differences between ADSS cable and OPGW cable in terms of structure, technical parameters, installation location, and cost. Which cable to choose depends on the specific application scenario and requirements.