输电导线新型模型的应力分层特性研究  

Research on Stress Layering Characteristics of New Transmission Conductor Model

作　　者：芮晓明[1] 赵国良 赵泽中 崔宜伟 刘微 RUI Xiaoming;ZHAO Guoliang;ZHAO Zezhong;CUI Yiwei;LIU Wei(School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,北京102206

出　　处：《华北电力大学学报（自然科学版）》2021年第3期57-64,107,共9页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家重点研发计划项目(2018YFC0809400)。

摘　　要：输电导线的破损是影响输电线路安全运行的重要因素之一,研究其破损机理具有重要的工程意义。钢芯铝绞线(ACSR)是目前应用较为广泛的输电导线类型之一,为解决传统研究中导线模型相对复杂与内层应力难以测量的问题,提出了一种新型有效的建模分析方法,并利用Abaqus软件对所提出的方法进行研究,通过将仿真结果与文献中的结果对比,验证了分析模型的有效性。同时利用此分析方法建立了JL/G1A-630/45型钢芯铝绞线模型,通过有限元方法和试验研究对其进行应力分层特性研究,将试验、有限元、理论计算等的结果进行对比,验证了所提出的分析建模方法。研究结果表明:铝线股内层应力大于外层股线,档中与约束端位置应力较大,接触中心有应力集中现象,容易引起导线的破坏。As the damage of transmission conductor endangers the safety of transmission lines,the related studies on its damage mechanism are significant for engineering.Aluminum conductor steel reinforced(ACSR)is the most widely used transmission conductor type.To deal with the complex models and unmeasurable inner stress in traditional research,this paper proposes a new modeling analysis method.We adopt Abaqus software to carry out finite element(FE)research on the proposed modeling analysis method,and verify the validity of the analysis model by comparing the simulation results with the results in the literature.At the same time,we use this analysis method to establish and research the JL/G1A-630/45 type ACSR model.Then we test the conductors by the test bench,and compare the test results with the FE results and theoretical calculations.The research results show that the inner layer stress of the aluminum strand is greater than that of the outer layer of the conductor,and that the stress is greater at the mid-span and the constrained end.The contact area is elliptical.Besides that,the stress concentration in the contact center is likely to damage the conductor.

关 键 词：输电导线 应力 建模分析 有限元 试验研究 

分 类 号：TM726.3[电气工程—电力系统及自动化]