500kV同塔四回路大跨越塔动力特性分析  

Analysis on Dynamic Characteristics of 500 kV Four-circuit on One Large Crossing Transmission Tower

作　　者：何天胜[1] 耿景都[2] 王振华[1] 何运祥[1] 

机构地区：[1]广东省电力设计研究院,广州市510663 [2]中国电力科学研究院,北京市100192

出　　处：《电力建设》2012年第8期58-60,共3页Electric Power Construction

摘　　要：介绍了西江500kV同塔四回路大跨越塔的工程概况,对大跨越单塔和塔线体系进行了动力特性分析,并比较了大跨越单塔与塔线体系动力特性的差异。单塔和塔线体系均首先出现x轴弯曲振型,然后是y轴弯曲振型,再是z轴扭转振型;单塔的y轴弯曲振型频率和z轴扭转振型频率低于塔线体系。结果表明:大跨越塔的结构体系布置合理,导线提高了塔线体系的y轴弯曲和z轴扭转刚度。The project of 500 kV four-circuit on one large crossing transmission tower in Xijiang was introduced, This paper analyzed and compared the dynamic characteristics of single tower and tower-line system. Both in the single tower and tower-line system, the first modal is x-axis bending vibration, the second modal is y-axis bending vibration, and the third modal is z-axis torsional vibration. The y-axis bending vibration frequency and z-axis torsional vibration frequency of the single tower are smaller than those of the tower-line system. The results show that the structural system layout of large crossing transmission tower is reasonable and the wire can improve the bending stiffness of y-axis and the torsional stiffness of z-axis.

关 键 词：同塔四回路 大跨越塔 单塔 塔线体系 动力特性 

分 类 号：TM75[电气工程—电力系统及自动化]