What type of vibration do line conductors experience?

Line conductors experience Aeolian vibration, which is a phenomenon specifically related to the oscillation of suspended cables due to wind. This type of vibration is caused by the interaction of wind with the surface of the conductors; as the wind flows over and around the wires, it generates oscillatory motion perpendicular to the direction of the wind.

Aeolian vibration can lead to significant fatigue in the cables and their attachments if not addressed with proper design and mitigation measures. Understanding this type of vibration is crucial for engineers and designers to ensure the long-term reliability and safety of overhead power lines.

The other types of vibrations listed, such as mechanical, acoustic, and thermal, do not specifically pertain to the natural wind-induced oscillation of line conductors. Mechanical vibration typically refers to vibrations caused by the movement or oscillation of mechanical systems, acoustic vibrations relate to sound waves, and thermal vibrations refer to the motion of particles within a material due to temperature changes, which are not the primary concern for the behavior of line conductors in windy conditions.