复合绝缘子风压分布研究及抗风性能检测方法  

Study on the Distribution of Wind Pressure of Composite Insulators and the Testing Method of Anti-Wind Performance

作　　者：雷云泽 贾志东[1] 赵莉华[2] 朱正一[1] 王言[1] 邓禹[3] 周军[3] 邓桃[3] 

机构地区：[1]清华大学深圳研究生院,广东省深圳市518055 [2]四川大学电气信息学院,四川省成都市610065 [3]中国电力科学研究院,北京市海淀区100192

出　　处：《中国电机工程学报》2016年第9期2545-2554,共10页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51477085;51477086);高等学校博士学科点专项科研基金(20130002130009)~~

摘　　要：中国西北地区电网中,复合绝缘子的伞裙在强风作用下出现了十分严重的撕裂故障。目前主要用风洞来研究绝缘子伞裙的起振风速、振幅等力学行为,但对其中的物理过程尚缺乏足够的研究。基于有限元仿真工具,对运行于新疆电网的若干型号复合绝缘子进行了建模和流固耦合仿真,研究了绝缘子迎风角度、伞径组合方式、伞径以及风速对伞裙表面风压的影响,并分析了复合绝缘子伞裙在风压作用下的受力和形变。以此为依据,提出了一种绝缘子抗风能力的检测方法,即在伞裙表面施加特定形状的静力载荷,并同时测量伞裙边缘的形变量。对数据进行换算,得到伞裙的单位压强形变后,与风洞实验中测得的起振风速存在良好的对应关系。所得结果可为风区抗风型绝缘子的设计和选型提供参考。The shed tearing problem of composite insulators under strong Wind is very serious in the power grid in Northwest China. Wind tunnel is the main method of researching the insulators＇ mechanical behaviors such as vibration-starting velocity and amplitude. But there is a shortage of studying on the physical processes in this phenomenon. Based on the finite element simulation tool, several types of composite insulators running in the Xinjiang Grid were modeled and simulated to research the wind pressure on the shed surfaces influenced by anti-wind angle, shed type, shed diameter and wind velocity. The force and the deformation exerted on the shed surfaces were also analyzed. On the basis, a testing method of insulators＇ anti-wind performance was proposed. Static loads whose shape was calculated were exerted on the surfaces of sheds while at the same time the deformation of the sheds edge was measured. ARer processing, there was a good correspondence between the deformation and the vibration-starting velocity of each insulator measured in the wind tunnel. The results can be a reference for the design and selection of insulators in strong wind areas.

关 键 词：有限元仿真 风洞试验 风压 起振风速:复合绝 缘子 边缘形变 

分 类 号：TM85[电气工程—高电压与绝缘技术]