冲击载荷在输电线路防舞动作用中的仿真研究  

Research on the Anti-Galloping of Transmission Lines Based on the Influence Of Impact Load

作　　者：严旭 李兵[1] 何怡刚[1] Yan Xu;Li Bing;He Yigang(School of Electrical Engineering and Automation,Hefei University of Technology,Hefei Anhui 230009,China)

机构地区：[1]合肥工业大学电气与自动化工程学院,安徽合肥230009

出　　处：《计算机仿真》2018年第12期77-80,301,共5页Computer Simulation

基　　金：国家自然科学基金(51777050;51637004);中央高校基本科研业务费(JDK16TD01);国家重大科学仪器设备开发项目(2016YFF0102200)

摘　　要：受风力、覆冰等自然因素作用时,架空输电线路会发生低频、大振幅舞动,严重威胁电力系统的安全运行。针对风荷载等自然因素所引起的输电线路舞动,结合系统稳定性机理提出了一种利用冲击载荷防止输电线路舞动的方法,对冲击载荷在输电线路防舞动中的作用进行了仿真研究,通过Ansys对输电线路进行建模,分析风荷载等自然因素作用下的输电线路舞动特性,比较风荷载和冲击载荷共同作用下输电线路舞动幅度的变化,仿真结果显示通过施加相应的冲击载荷大小以及作用点个数可以有效减小风荷载对输电线路舞动的影响,验证了利用冲击载荷防止输电线路舞动的可行性,为进一步的研究提供了参考依据。The overhead transmission lines have always been influenced by natural factors such as wind load and icing,which causes the galloping of the transmission lines in a low frequency and large amplitude and seriously threats the safe operation of electric power system.For the influence of wind load on the transmission lines'galloping, we put forward a method which uses impact load against the galloping of transmission lines with the theory of system stability,making a simulation research on the effection of impact load on anti-galloping of transmission lines.Then we used the finite element analysis software called Ansys to build a model of transmission lines,and analyzed the galloping character of transmission lines with different environment factors like wind loads.Compared the changings in galloping amplitudes between wind load and impact load,the simulation results show thatcorresponding size and action point numbers of impact loads can diminish the influence on transmission line of wind load,which proves the feasibility for using impact load against galloping of transmission lines,and provides a reference for the further research.

关 键 词：输电线路 防舞动 风荷载 冲击载荷 

分 类 号：TM751[电气工程—电力系统及自动化]