Numerical Study on Dynamic Swing of Insulator String in Tower-Line System under Wind Load

Numerical modeling of transmission tower-line systems subjected to stochastic wind loads is presented. Dynamic responses of transmission tower-line systems with different structural parameters in stochastic wind fields with various average wind velocities are carried out by ABAQUS software. Based on the dynamic swing angles of the insulator strings, dynamic wind load factors are suggested to determine the swing angle of suspension insulator string in tower head design. The dynamic wind load factors are dependent on the reliability requirement of the designed transmission line.