【摘要】 为更清楚地掌握输电塔塔-线体系动力特性,基于ANSYS软件建立输电塔塔-线体系有限元分析模型,并以典型设计500kV输电线路5A-ZM2型塔为例,对单塔双线模型和三塔四线模型的振动频率进行了比较.数值分析结果表明:单塔双线模型满足精度要求且简便易行,可用于实际工程的有限元建模.此外,对单塔双线模型进行模态分析,获得了塔-线体系的频率范围,结果表明:输电塔塔-线体系频率比较密集,前159阶振型均反映为绝缘子和输电线的振动,160阶振型以后才反映输电塔振动的频率.更多还原

【Abstract】 In order to investigate the dynamic behavior of the transmission line system,the finite element model of the system was built by ANSYS,and the vibration frequencies were compared between the single tower with two lines system and the three towers with four lines system by taking the typical 500 kV 5A-ZM2 transmission tower as an example. The numerical result illustrates that the model of single tower with two lines system can achieve satisfying accuracy with convenient work. In addition,the frequency range of the transmission line system can be obtained by the model analysis on the single tower with two lines system. The results indicate that the frequency of the transmission line system is very intensive,the first 159 vibration modes reveal the vibration of the insulator and the line,and the later modes reveal the vibration of the tower.更多还原