Non-uniform ice-shedding on transmission lines is a significant contributor to line faults and defects.To analyze the dynamic tension variations during the ice-shedding process in moderate ice zones

a finite element model

representing the continuous span-tower coupled system under typical design conditions

is established using finite element analysis software.This study examines the influence of various voltage levels and factors on the dynamic tension characteristics of ice-shedding and derives a fitting calculation formula.Results show that factors such as ice-shedding rate

icing thickness

span length

and conductor type have a significant impact on the tension disparities of the conductor.In contrast

the number of spans and height differences have minimal impacts.For overhead transmission lines in moderate ice regions

the peak unbalanced tension difference in the conductor after ice-shedding is about 1.71 times that of the steady-state unbalanced tension.It is crucial in design considerations to acknowledge the potential destructive impact of the instantaneous peak on the tower-line system.