摘要
钢管杆的稳定性关系到输电线路是否能够安全运行,而常规的稳定性计算方法非常复杂且不易求解。利用有限单元法理论,采用通用有限元分析软件ANSYS,对110 kV双回路钢管杆进行三维建模,并对其进行稳定性分析,得出钢管杆在5种工况下的失稳临界荷载、特征值和屈曲模态形状,发现断导线工况下钢管杆最容易失稳。该研究表明,借助有限单元法可以有效地分析钢管杆的稳定性,并得出合理结果,为ANSYS计算钢管杆稳定性问题提供参考。
The stability of steel poles matters a lot to the safety operation of the transmission line but the conventional stability calculation method is complex and hard to obtain solutions. Using the finite element theory and software ANSYS, this paper provides the three-dimensional modeling of the steel pole for a certain 110 kV double circuit transmission line and analyzes its stability and obtains the critical load of instability, characteristic value and buckling mode shape under 5 different loads. It is found that the steel pole loses stability the easiest with conductors broken. The study shows that finite element method can effectively analyze the stability of the steel pole and provide reasonable results, therefore a useful reference for the ANSYS calculation of the steel pole stability.
出处
《电网与清洁能源》
2014年第1期27-30,共4页
Power System and Clean Energy
基金
湖北省高等学校青年教师深入企业行动计划项目(XD2012118)~~
关键词
输电线路
钢管杆
有限元
transmission line
steel pole
finite element
