变电站全联合构架有限元建模与动力学特性分析  

Finite element modeling and dynamics characteristics analysis for transfer substation whole joint structure

作　　者：唐学军 熊一 董弘川 谢东 张赵阳 李录平[2] 晋风华[2] 颜尚君 陈鹏飞 封江 TANG Xue-jun;XIONG Yi;DONG Hong-chuan;XIE Dong;ZHANG Zhao-yang;LI Lu-ping;JIN Feng-hua;YAN Shang-jun;CHEN Peng-fei;FENG Jiang(Economic Technological Institute of State Grid Hubei Electric Power Company,Wuhan 430001,China;School of Energy and Power Engineering,Changsha University of Science and Technology,Changsha 410114,China)

机构地区：[1]国网湖北省电力公司经济技术研究院,湖北武汉430001 [2]长沙理工大学能源与动力工程学院,湖南长沙410114

出　　处：《长沙理工大学学报（自然科学版）》2018年第3期94-100,共7页Journal of Changsha University of Science and Technology:Natural Science

基　　金：国网湖北省电力公司科技项目(52153816001B)

摘　　要：为了给全联合变电构架风荷载设计提供依据,以华中地区某500kV变电站联合构架为工程背景,运用Solidworks三维建模软件,建立了500kV变电站全联合构架的实体模型。采用有限元分析软件ANSYS Workbench对全联合构架划分网格进行模态分析,得到了全联合构架前20阶模态频率以及模态振型图。通过分析找到了500kV全联合构架前20阶模态频率分布特点以及模态振型规律,发现该联合构架为风荷载的敏感结构,水平方向的脉动风速容易激起构架的低阶振型。In order to provide the basis for the design of the wind load. A 500kV transfer substation whole joint structure in the central Chinese provinces is taken as the engineering background, the 3D solid model of a 500kV transfer substation whole joint structure is es tablished by using the Solidworks three dimensional modeling software, the mesh genera tion and modal analysis of the whole joint structure is carried out by using the ANSYS Workbench. The first 20 orders of modal frequencies and modal shapes of the whole joint structure are calculated. By analysis, the distribution law of the first 20 orders of model fre quencies and modal shapes are revealed. Aanalysis result demonstrates that the 500kV transfer substation whole joint structure is sensitive to the fluctuating wind load, the lower order model shapes of which can be easily excited by fluctuating wind speed in the horizontal direction.

关 键 词：500KV变电站 全联合构架 实体建模 有限元分析 模态频率 模态振型 

分 类 号：TK268.1[动力工程及工程热物理—动力机械及工程]