架空线无人机撞线除冰雪的动态响应过程仿真研究OA

Increased longitudinal bouncing and dynamic tension in conductors during the growth and shedding of ice and snow on transmission lines poses a great threat to the stable and safe operation of the power system.This paper focuses on a UAV-mounted payload collision de-icing strategy for snow-covered transmission lines,and establishes a finite element model based on acceleration criteria for snow and ice detachment to numerically simulate the snow and ice removal process and dynamic ice-shedding responses,analyzes the complex effects of multiple factors-including impact location,span length,impact load parameters(magnitude and angle),and ice/snow thickness on snow and ice removal rate,tension increase,and ice-shedding jump height.The results demonstrate that when applying identical impact loads,the 1/4 span position achieves optimal de-icing efficiency with minimized operational risks.Although increasing impact loads progressively enhances de-icing rates while simultaneously elevating jump heights and tension surge risks.Thicker ice/snow layers require higher energy consumption for de-icing,therefore it is recommended to use a graded loading impact method for snow and ice removal in practical engineering.