悬浮沙粒对钢芯铝绞线电场强度分布的影响  

Influence of suspended sand on electric field intensity distribution of aluminum conductor steel reinforced

作　　者：赵全齐 李彦哲[1] 赵珊鹏 ZHAO Quanqi;LI Yanzhe;ZHAO Shanpeng(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

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：《传感器与微系统》2023年第10期60-63,76,共5页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(51867013)。

摘　　要：以钢芯铝绞线(ACSR)为研究对象,利用有限元法建立仿真模型,计算分析沙尘参数以及ACSR最外层铝股数对绞线电场分布的影响。研究结果表明:沙粒会加剧绞线表面电场和绞线附近空间电场的畸变,沙粒粒径、浓度、带电量和线路运行状态对绞线表面及附近空间电场有明显影响,且沙粒所带负极性电荷对电场造成的畸变比正极性电荷更严重。绞线截面积相同情况下,绞线表面电场强度极大值随最外层铝股数增加而减小。研究沙粒参数对ACSR电场分布特性的影响,可为沙尘环境下ACSR选型及设计提供理论依据。The aluminum conductor steel reinforced(ACSR)is taken as the research object,finite element method is used to establish a simulation model,calculate and analyze the parameters of sand and dust,and the influence of the number of pairs of aluminum strands in the outermost layer of the ACSR on electric field distribution.The research results show that sand particles will aggravate the distortion of the electric field on the surface of the strands and the electric field in the space near the strands.The size,concentration,charge of the sand particles and line operation status have a significant impact on the electric field on the surface of the strands and the nearby space.The distortion to the electric field caused by negative charges of the sand particles is more serious than the positive charge.Under the same cross-sectional area of the stranded wire,the maximum value of the electric field intensity on the surface of the stranded wire decreases with the increase of the number of the outermost aluminum strands.Studying the influence of sand particles parameters on the electric field distribution characteristics of ACSR can provide a theoretical basis for the selection and design of ACSR under sand and dust environment.

关 键 词：钢芯铝绞线 有限元法 悬浮沙粒 不同参数 电场分布 

分 类 号：TM852[电气工程—高电压与绝缘技术]