Transmission Line Conductor Galloping Analysis using FEM

摘要

To find a mathematical standard of the galloping mechanism, and it is required to compare the existing mathematical standards on the conductor galloping. In this paper, using the Hamilton principle the continuum cable standard for transmission lines was proposed. Discrete standards of one degree of freedom, two degree of freedom, and three degree of freedom were obtained from the Garlekin function. And the standards were compared with different influence factors by analyzing the galloping vertical amplitude. The influence factors were wind velocity, flow density, damping ratio, span length, and initial tension. The three-degree of freedom design standard is more accurate than the other two standards for galloping characteristics calculation. The variation of the galloping amplitude relative to the influence factors was also obtained using finite element method (FEM). This analysis is very useful for galloping analysis and anti-galloping design.