干燥带对接触网复合绝缘子电场分布的影响  

Influence of Dry Band on Electric Field Distribution of Composite Catenary Insulator

作　　者：张友鹏[1] 陈志东[1] 赵珊鹏 

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070

出　　处：《铁道学报》2015年第11期25-29,共5页Journal of the China Railway Society

基　　金：国家自然科学基金(51567014);铁道部科技研究开发计划(2012J007-C);兰州交通大学校青年基金(2015040)

摘　　要：为研究接触网棒形柱式复合绝缘子表面干燥带对其沿面电场分布的影响,在COMSOL Multiphysics软件中建立了绝缘子二维仿真模型,分析了绝缘子容易出现干燥带的位置以及干燥带宽度和数量对其沿面场强的影响。仿真结果表明:绝缘子伞裙间柱体处最容易形成干燥带。干燥带处绝缘子电场发生明显畸变,随着干燥带宽度的增加,伞裙上下表面干燥带处的最大场强增大而柱体上干燥带处的场强减小;伞裙表面干燥带处最大场强均出现在干燥带端部。随着伞裙上下表面干燥带数目的增加,干燥带处场强最大值增大;伞裙间柱体上干燥带数目增加,场强最大值减小。In order to study the influence of dry band along the surface of catenary rod-column post composite insulatoron the surface electric field distribution, a two-dimensional simulation model of the insulator was established in COMSOL Multiphysics software, to analyze the position of the dry band that may appear on the insulator as well as the effects of thewidth and the number of dry bandson the field strength. According to the simulation results, several conclusions can be drawn as follows. Firstly, the dry band can be most easily gener- ated in the cylinder between every two adjacent sheds. Secondly, the electric field of the insulator at the dry band was obviously distorted. With the increasing of dry band width, the maximum field strength of the dry band at the upper and lower surfaces of the sheds increasedwhile the field strength at the dry band of the cylinder decreased. The maximum electric field at the dry band of the surface of the sheds appeared at the ends of the dry band. Finally, with the increase of thenumber of the dry bands at the upper and lower surfaces of the sheds, the maximum value of the electric field strength at the dry band increased. However, with the increase of the number of the dry bandsat the cylinder, the maximum value of the field strength decreased.

关 键 词：柱式复合绝缘子 干燥带 电场分布 有限元法 COMSOL MULTIPHYSICS 

分 类 号：O441.1[理学—电磁学]