输电线路覆冰原因分析及优化研究  

Cause analysis and optimization research of ice accretion on transmission line

作　　者：杨铭[1] 杨湘蒙 

机构地区：[1]长沙理工大学电气学院,湖南长沙410015 [2]湖南省农林业设计研究院工业分院,湖南长沙410015

出　　处：《电气传动自动化》2013年第6期23-26,共4页Electric Drive Automation

摘　　要：输电线路覆冰事故频频发生,对电力的安全生产造成很大影响。分析输电线路覆冰的形成机理及影响因素,指出了混合冻结对输电线路危害最为严重,气象、高度、线路、电场均是影响线路覆冰的因素。建立输电线路覆冰厚度的计算模型,通过对弧垂的受力分析得出了一种计算冰层厚度的算法。提出了输电线路除冰方法和预防结冰的措施,指出了采用合理的抗冰设计是防止输电线路覆冰的最有效措施,并对不同除冰方法进行了技术经济分析,为电网的安全运行和改造工作提供了理论基础。Ice accretion on transmission line occurrs frequently. It has an important influence in power production safety. From the formation mechanism of transmission line ice and influencing factors, the hybrid freeze is pointed out that has most serious harm to transmission lines. Weather, height, line, electric field are the influence factors of ice disaster. Based on the stress analysis of conductor sag, the ice thickness of transmission line calculation model is built. The transmission lines deicing method and prevention measures of ice are put forward. It also points out that take reasonable design to prevent transmission lines ice cover is the most effective measures, and the technical and econorrfic analysis are taken for different deicing methods. The theoretical basis is provided for safe operation and transformation work of the state grid.

关 键 词：输电线路 覆冰厚度 除冰方法 预防措施 

分 类 号：TM753[电气工程—电力系统及自动化]