Shield wires with aluminum-clad steel wires used as static shields in overhead transmission lines have improved corrosion resistance and longer lifespan due to the use of aluminum coating (AW).
The phenomenon of lightning can potentially cause damage to power transmission lines. The damages inflicted upon these lines can be undesirable and costly, as replacing the conductors imposes a substantial financial burden on responsible companies. To prevent such damages, one can employ a steel static shield wire—an overhead electrical wire designed to protect power transmission lines from lightning strikes. Static shield wires conduct the current through aerial ground wires and channel it to the ground, preventing harm to the transmission lines. Ground wires placed above transmission lines can contribute to prolonging the system's lifespan. Depending on the design of the transmission lines and prevailing weather conditions, shield wires may have different structures. Enhancing the corrosion resistance of shield wires is achieved by incorporating aluminium-clad steel wires, which offer superior protection against corrosion when compared to galvanized wires. The preference for using aluminium-clad steel wires is particularly pronounced in coastal and humid regions, as well as in urban and industrial areas with higher pollution levels.