摘要
为解决架空输电线路在恶劣运行环境中容易发生断股的问题,利用Ansys有限源分析软件,根据实际设计参数进行建模。通过对架空输电线路的静动态力学进行仿真,发现在静态条件下架空输电线路的应力集中在线夹出口处。在微风载荷下的动态分析中发现,随着断股数的增加,其固有频率存在下降的趋势,且位移最大响应值在76 Hz附近。研究结果为架空输电导线的运行维护和断股识别技术提供了理论参考。
To solve the problem that overhead transmission lines are prone to strand breakage in harsh operating environments,using Ansys finite source analysis software,the parameters are designed and modeled according to the actual situation.By simulating the static and dynamic mechanics of overhead transmission lines,it is found that the stress concentration of overhead transmission lines is concentrated at the outlet of the line clamp under static conditions.In the dynamic analysis under breeze load,it is found that with the increase of the number of broken strands,its natural frequency has a downward trend,and the maximum response value of displacement is around 76 Hz.The research results provide a theoretical reference for the operation maintenance and strand identification technology of overhead transmission conductors.
作者
李家俊
吴建军
龙玉雪
王诚
田相鹏
廖红华
钟建伟
LI Jiajun;WU Jianjun;LONG Yuxue;WANG Cheng;TIAN Xiangpeng;LIAO Honghua;ZHONG Jianwei(State Grid Hubei Electric Power Co.,Ltd.,Enshi Power Supply Company,Enshi 445000,China;School of Intelligent Science and Engineering,Hubei Minzu University,Enshi 445000,China)
出处
《电工技术》
2023年第7期97-99,103,共4页
Electric Engineering
基金
国网湖北省电力有限公司恩施供电公司2022科技项目资助(编号B715P022004W)。
关键词
架空输电线路
微风振动
模态分析
overhead transmission lines
breeze vibration
modal analysis
