不同档距四分裂线路的防舞仿真分析

Simulation of different span quad bundle transmission line's anti-galloping

开展了不同档距四分裂线路的舞动特性和相地间隔棒防舞仿真分析,建立不同档距四分裂线路和相地间隔棒的有限元模型,模拟线路的整体舞动,通过舞动位移响应、舞动轨迹及位移频谱分析线路的舞动特性.根据舞动特性确定不同档距四分裂线路相地间隔棒的不同配置方案,从线路舞动过程中的位移、轨迹以及张力等方面,对比安装相地间隔棒前后线路的舞动响应.分析结果表明:不同档距四分裂线路的舞动特性不同,相地间隔棒的不同配置方案起到明显的抑舞作用.仿真结论对不同档距特高压输电线路舞动防治和相地间隔棒防舞实验研究有重要指导意义.

This paper develops simulation research for different span quad bundle transmission line’s anti-galloping.Firstly build the finite element model of phase-to-ground spacer and different span quad bundle transmission line,simulate the whole galloping.Analysis of the conductor’s galloping characteristic by the displacement responses,galloping trajectory and displacement spectrum.Then determine installation schemes by the characteristic of galloping of different span quad bundle transmission line,and carry out comparative analysis about the line’s galloping response before and after the anti-galloping devices’ installation according to displacement,trajectory and tension.The result shows that galloping’s characteristic of different span line is different,at the same time,different installation schemes works well for anti-galloping.The results provide great significance for different span quad bundle transmission line’s anti-galloping technology and experiment study on the phase ground spacer’ anti-galloping.