The Design And Simulation Analysis Of Aeolian Vibration Sensing Structure For Overhead Transmission Line

The conductor vibration of is common in wide-span overhead transmission line. It couldcause transmission line breaking, metal wearing, and even disconnection which threat thesecurity of electricity transmission. In addition, it enhances the wire stress index, increases thecost of transmission lineas as the existence of aeolian vibration. In order to prevent thedamage of aeolian vibration, the effective monitor of tramsission line is most important.Accroding to the IEEE transmission line vibration measurement criterion, bending amplitudemethod is proposed to monitor aeolian vibration. Current China standard “Technicalspecification of on-line monitoring system of aeolian vibration for overhead transmissionlines” also adopts this method for monitoring. The method uses cantilever beam-sensorvibration meter to measure the bending amplitude of transmimission lines. Therefore, studyon the structural design of aeolian vibration sensing structure for overhead transmission line ismeaningful for academic and practical application.This paper focuses on the structure analysis of cantilever beam-sensor which is one ofkey component of aeolian vibration monitoring, and proposed optimization measures.The monitor performance demand of aeolian vibration for overhead transmission lines isstudied first and the operational principle and usage method are analyzed. Through analyzing,the optimal method is proposed to increases the natural frequency of nowadays product.Theprinciple of cantilever beam-sensor is analyzed. Through the static force analysis, dynamicanalysis, and sensitivity analysis, the influence factors of natural frequency are found which isused to modify the structure size parameters of cantilever sensor. The structure simulationmodel is built in SolidWorks, and the natural frequency is calculated by SolidWorksSimulation function module. The simulation result is compared with the original product.This paper intends to increase the natural frequency of the cantilever which can improvethe aeolian vibration meter frequency index. The simulation results indicate that, the naturalfrequency of aeolian vibration monitor cantilever can be optimized by modified the length,thickness, and weight in the end of the cantilever. The optimized module is useful for theincreasing of natural frequency.