摘要
为分析典型特高压钢管塔及塔线耦合体系的动态特性,利用ANSYS软件建立特高压钢管塔“四塔五档线”模型,采用有限元方法对导地线进行静力学平衡计算,研究了塔线耦合体系的固有模态及振型,结果表明:有限元计算的导地线弧垂值与理论计算值之间的相对误差均小于5%,符合工程容许范围;塔线耦合体系具有振型多样性特点,其基频率数值一般较小且模态振型较密集,前500多阶模态振型基本上都集中在导地线上,而以输电杆塔为主的模态振型则出现的较晚,进一步验证了导地线刚度小于铁塔构件刚度。
In order to analyze the dynamic characteristics of the typical UHV steel pipe tower and the tower coupling system,ANSYS software was used to establish the“four towers of the four towers”model of the UHV steel pipe tower.The finite element method was used to calculate the static balance of the ground wire.The results show that the relative error between the geodesic arc and the theoretical calculated values of the finite element method is less than 5%,which is in accordance with the engineering allowable range.The coupling system of the tower line has the vibration mode Diversity characteristics,the basic frequency values are generally small and modal mode is more dense,the first 500 multi-mode mode of vibration are basically concentrated in the guide wire,and to the power tower-based mode mode appears,And further verified that the stiffness of the guide wire is smaller than that of the tower.
作者
丁志敏
补黔江
王德忠
陈舸
李明华
DING Zhi-min;BU Qian-jiang;WANG De-zhong;CHEN Ge;LI Ming-hua(Guizhou Kaili Power Supply Bureau of Power Grid Co.Ltd.,Kaili 556000,China)
出处
《电气开关》
2020年第4期38-43,共6页
Electric Switchgear
