A Simulation Study on Ice Shedding Bouncing Suppression Measures for Transmission Lines
The shedding of ice from overhead power lines can cause longitudinal bouncing and increase dynamic tension,posing a significant threat to the stability and safety of the power system.This article first establishes a finite element model of transmission lines and applies traction forces and inter-phase spacer rods through mechanical equivalence.The effects of various factors on the suppression of line shedding are then explored through numerical simulations.The results show that the influence of traction forces on the displacement and amplitude of the line's bouncing is not significant,and the inappropriate application position can even increase the risk of flashovers.The installation of inter-phase spacer rods has a significant effect on the suppression of bouncing,with the best results achieved when the rods are installed near the line attachment points.Strong winds can cause significant lateral displacement of ice-covered lines,leading to a higher risk of flashovers.However,the application of spacer rods has a noticeable inhibitory effect on both the lateral and longitudinal displacement of the lines,preventing flashover accidents from occurring.
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