Position Optimization Of Vibration Dampers For Continuous Induced De-icing Transmission Lines

The vibration response caused by the de-icing of transmission lines may lead to serious accidents such as short circuits,wire breakages,and inverted towers.It is necessary to take measures to suppress the vibration response to improve the reliability of the transmission line operation.The existing anti-icing vibration suppression schemes are mostly applied in fixedscale de-icing scenarios.With the widespread application of thermodynamic de-icing technology in power systems,there are a large number of continuous induced de-icing conditions in the de-icing process of transmission lines,In the continuous induced de-icing scene,the ice at a certain point of the transmission line falls off firstly causing the line vibration.And the line vibration causes the other point ices to fall off.It is difficult to apply the existing fixed deicing vibration suppression scheme to the continuous induced deicing scene.Therefore,the response process and suppression method of the de-icing vibration for transmission lines in the thermodynamic deicing scene are studied in this paper.The main work in this paper is:Firstly,analyze the effectiveness of existing deicing vibration suppression methods.The effectiveness of the existing vibration dampers' arrangement scheme on the vibration response of transmission lines in fixed-scale de-icing scenarios is verified.Then,the suppression effectiveness of the existing vibration dampers' arrangement scheme using thermodynamic deicing technology is analyzed.Secondly,the dynamic response model of continuous induced de-icing of transmission lines considering the non-uniformity of vibration dampers is established and its effectiveness is verified.The finite element method is used to establish the transmission line model.Considering the influence of vibration dampers as non-uniform loads on the transmission line,the non-uniform distribution model of the transmission line is established and solved.The model under continuously induced de-icing scene and the effectiveness of the transmission line dynamic response process after installing vibration dampers are verified.Thirdly,propose the location optimization method of vibration dampers.Firstly,different vibration dampers arrangement schemes are generated.Based on the dynamic induction model of continuous induced de-icing of transmission lines considering the non-uniform characteristics of vibration dampers,the damping effectiveness of different anti-vibration hammer arrangement schemes is judged according to the damping rate.The vibration dampers' optimization option is initially identified;then study the influence of parameter factors such as wire type and line spacing on the selection of vibration dampers optimization scheme during continuous induced deicing,analyze the installation position optimization problem of vibration dampers;The effectiveness and vibration suppression effect of the optimal arrangement of the vibrating hammer in a fixed amount of deicing scene.Thus vibration dampers' optimization scheme considering the continuous induced deicing condition is obtained,and the installation weight of vibration dampers is analyzed,accordingly obtaining a vibration dampers' position optimization method for transmission lines suitable for most continuous induced de-icing scenarios and providing a reference for the design of transmission line and the vibration dampers' installation.