Vibration in Overhead Conductors
CONTENT > Vibrations in Overhead Conductors > Types of Vibrations > Precautions Vibrations in Overhead Conductors Vibration is one of the serious cause of conductor failure (i.e. having cracks , breaking of conductor , or flash over ) in overhead conductors of transmission lines. So, vibration should be kept within limits for safe operation of the transmission lines. Types of Vibrations Vibration in Power Lines can be categorized into three types caused under the influence of wind : i) Resonant or Aeolian Vibration ii) Galloping iii) Simple swinging i) Aeolian Vibration 1) These vibrations are caused by aerodynamic forces generated as the wind blows across the conductor. fig : Damage due to Aeolian vibration 2) The frequency of the vibration may receive a positive feedback from the conductor's natural vibration frequency. 3) This self- exciting vibration can cause cracks on the conduct...