Commonly Used Anti-Swing Devices for Overhead Transmission Lines and Their Characteristics


1. Overview of the swing

Overhead transmission line conductors occur after eccentric icing, in the wind excitation generated under a low frequency, large amplitude self-excited vibration phenomenon. In layman’s terms when the wind blows to the non-circular cross-section of the wire due to icing, a certain aerodynamic force is generated. This will induce the wire to produce a low frequency (about 0.1 ~ 3 Hz), the large amplitude of self-excited oscillation, due to its form up and down, shaped like a dragon pendulum, called swing.

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