雪峰山试验站自然条件下导线覆冰厚度形状校正系数  

Shape Correction Coefficient of the Icing Thickness on Conductors Under Natural Icing Condition at Xuefeng Mountain Test Station

作　　者：向泽[1] 蒋兴良[1] 胡建林[1] 常恒[1] 尹芳辉[1] 黎振宇[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030

出　　处：《高电压技术》2014年第11期3606-3611,共6页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2009CB724501);国家创新研究群体基金(51021005)~~

摘　　要：覆冰厚度的检测是输电线路运行部门防冰融冰工作中极为关注的问题之一,为此,总结了国内外覆冰厚度测量方法及其存在的问题。根据雪峰山自然覆冰试验站大量现场试验观测结果分析了自然条件下导线覆冰的几种典型形状特征,并基于面积等效原则,将导线实际非均匀、不规则覆冰校正为均匀覆冰,据此提出了现场人工测量时覆冰厚度的形状校正系数,为输电线路覆冰现场测量提供了一种有效且简便的测量手段。最后,利用雪峰山自然覆冰试验站对覆冰期不同覆冰阶段导线覆冰形状进行观测,对提出的形状校正系数进行试验验证,结果表明校正后导线覆冰厚度与实际覆冰厚度偏差<9%,可满足工程实际需要。研究结果可为输电线路覆冰厚度现场测量、在线监测和冰厚计算提供一定的参考。Ice thickness measurement on conductors is one of the most significant problems in anti-freezing and ice melting, thus we summarized methods of measuring the ice thickness of transmission lines both at home and abroad and discussed the defects of each method. By analyzing the icing data observed in Xuefeng Mountain natural icing station（XMNIS） in recent years, we studied the section shape of glaze icing conductors and converted the actual non-uniform ice into uniform ice with the correction coefficient based on the area equivalent principle so as to provide an accurate and convenient measurement method for field ice measurement. Finally, on the basis of the field test at XMNIS, we observed and analyzed the ice shape of the conductor at different icing stages. It is found that the ice thickness gained by the correction coefficient is well in accordance with manual measurement data and the error between them is less than 9%. The calculation results can satisfy the demands of engineering application, thus the correction coefficient can be used for field measurement, on-line monitoring and ice thickness calculation on transmission lines.

关 键 词：导线 覆冰 形状特征 现场实测 冰厚 校正系数 

分 类 号：TM75[电气工程—电力系统及自动化]