Why Do Power Transmission Lines Remain As Stable As Mount Tai During Rainy And Snowy Seasons? Pre-stretched Wire Plays A Crucial Role.

Many electrical engineers, during winter and spring inspections, always focus on the suspension points of the power lines. Their concerns are primarily heavy ice buildup or strong winds mixed with rain and snow. In such severe weather, the stress on the power lines is extremely uneven, and the support points are the most vulnerable to damage. At this point, the seemingly simple spiral structure of armour rod becomes the "shock absorber" of the circuit.

Dynamic Stress Absorption and Dispersion

This material is installed on the outer layer of the conductor, forming a tough protective layer. When rain and snow accumulate and create downward force, or when wind causes severe vibrations in the conductor, it can quickly absorb this excess energy.

• Physical Deformation Compensation: It utilizes its own spiral elasticity to adapt to the slight deformation of the conductor.

• Stress Redistribution: It pushes the pressure originally concentrated at the suspension clamp to both sides, allowing the entire line to bear the weight evenly.

• Friction Energy Dissipation: The tight fit between the wire and the conductor converts vibrational energy into heat energy through minute displacements.

A Unique Structure for Coping with Snow and Ice

The armour rod in transmission line component acts as a buffer against rain and snow, which is particularly noticeable in freezing weather. Ordinary fasteners are too rigid and prone to material fatigue when exposed to thermal expansion and contraction.

This spiral structure has a tiny gap between the tube wall and the conductor. When ice and snow cover it, increasing its weight, the armor rods conductor component will twist slightly along with the conductor. This flexibility perfectly counteracts the rigid tension from the ice. It's like putting a spring-loaded support on the wire; even if the ice is heavy, the force is dispersed, preventing the wire from breaking at the clamp.

In actual installation, the gripping force of this prefabricated material is very even. Unlike bolt crimping, which tightly clamps a single point, it covers a long distance. This large-area contact allows the conductor to maintain stable operation even in rainy and snowy seasons, eliminating concerns about breakage due to excessive localized stress.