The span of high-voltage overhead lines is relatively large, and the towers are also high. When the wires are subjected to strong winds, they will experience strong vibrations. When the wire vibrates, the working conditions at the wire suspension are the most unfavorable. Long term and periodic vibrations can cause fatigue damage to wires, resulting in broken strands and wires. Sometimes strong vibrations can also damage fittings and insulators.
In order to prevent and reduce the vibration of wires, a certain number of shock-absorbing hammers are generally installed near the hanging wire clamps. When the wire vibrates, the shock absorber also moves up and down. Generating a force that is asynchronous or even opposite to the vibration of the wire can reduce its amplitude and even eliminate its vibration.