Modal parameter calculation and vibration characteristic analysis of transmission line conductor

Abstract Structural damage identification technology based on modal parameters is an extremely effective monitoring method. Because of the structural characteristics conductor, with its small diameter and long span, it not easy to obtain by manual excitation. Here, a method for health conductor under wind load excitation proposed. Firstly, natural frequency change law after broken strand obtained analyzing calculation formula IEEE standards. Then, vibration are calculated experiments finite element methods. Finally, through experiment, this paper demonstrates how determine degree using parameters. And applied online in field. The results show that convenient, fast, accurate.