Transmission Line Galloping Prediction Research Via Aerodynamic Parameter Simulation and Trajectory Characterization

Ice‐accreted conductor galloping constitutes a critical threat to transmission line safety in cold regions, where wind‐induced large‐amplitude displacements may provoke inter‐phase electrical faults and mechanical failure. Therefore, research and prediction of galloping mechanisms remain a significant ongoing research challenge. This study computationally simulates aerodynamic parameters for crescent‐shaped ice accretion on single and quad‐bundled conductors using CFD, with results cross‐validated against wind tunnel experiments to mutually verify reliability. Experimentally derived aerodynamic data subsequently informed a finite element model of the conductor‐insulator mechanical system, enabling simulation of horizontal or vertical motion trajectories and mechanical loads for quad‐bundled conductors under specified conditions. Critical analysis reveals galloping initiation occurs when vertical velocity approaches 0 m/s while the vertical force coefficient (C y ) curve exhibits a positive slope. Furthermore, the initial ice accretion angle triggering galloping in quad‐bundled conductors predominantly ranges between 60° and 90°. Finally, a regional forecasting model for galloping‐prone meteorological conditions based on an SVM classifier is constructed. The study further investigates the intrinsic factors closely related to the occurrence of galloping in transmission lines—such as conductor structure and parameters—when the model predicts that a specific region meets galloping‐prone meteorological conditions, offering critical references for future galloping prediction.