摘要
为了研究风沙环境下输电线路导线所呈现的表面状态以及由其对电晕特性的影响,本次试验基于风洞模拟系统,研究了四种攻角下,导线迎风点受到风沙侵蚀后所呈现的表面状态,借助于扫描电子显微镜来观测表面形貌,结果表明:攻角90°时出现麻点状风蚀坑;其他三种攻角下呈现顺风向的沙滩状起伏。能量谱分析得出:表层Si、O元素含量增加且形成化合物,提高了其抗风蚀能力。
Surface condition of transmission line is an important factor to affect the corona characteristics.This experiment studied the surface condition after eroding by sand particles on four different angles.Basing on wind tunnel simulation system, surface mor-phology can be clearly reflected by scanning electron microscope.The results show that surface appears wind erosion pit for the attack angle of 90＆#176;and appears dunes waves across the surface along the wind direction for other three angles.Energy spectrum analysis in-dicates that：the content of O and Si is increased and the surface layer forms a kind of dense compounds which improves the ability to resist wind erosion.
出处
《云南电力技术》
2015年第2期41-43,共3页
Yunnan Electric Power
关键词
表面状态
风沙粒子
攻角
surface condition
sand particles
ACSR cable
erosion angle
