装配式架线线长精确计算方法  

Accurate Calculation on Line Length in Assembly Lining

作　　者：姜鹏[1] 王镯[1] JIANG Peng;WANG Zhuo(State Grid Hengyang Power Supply Company, Hengyang, Hunan, 421000, China)

机构地区：[1]国网湖南省电力公司衡阳供电分公司,湖南衡阳421000

出　　处：《工业技术创新》2017年第1期62-65,共4页Industrial Technology Innovation

摘　　要：围绕输电线路装配式架线方法中线长的精确计算展开了研究。考虑导线弹性模量、温度线膨胀系数、初伸长等因素对线长的影响,进行了公式推导,建立了装配式架线线长精确计算数学模型。利用Visual Basic 6.0进行了软件开发,计算了不同工况下的线长及误差率。计算结果表明:装配式架线精确计算线长与正常运行线长相比,误差率约为0.5‰。计算精度满足了装配式架线工程的高标准要求。The accurate calculation on line length in assembly lining method for transmission lineis investigated.Mathematical model for such accurate calculation is established by formula derivationconsidering impacts including elastic modulus,thermal expansion coefficient and initial elongation oftransmission line.Line lengths and their margins of error for various working conditions are calculatedin software deployed by Visual Basic6.0.The calculation results show that,compared with the normaloperation,the accurate calculation of line length has a margin of error of about0.5‰.Such a precisionmeets the high standards and strict requirements for assembly lining project.

关 键 词：装配式架线 线长 精度 弹性模量 初伸长 降温值 误差率 

分 类 号：TM752[电气工程—电力系统及自动化]