重庆地区电网覆冰的海拔高度特性  

Altitude Characteristics of Ice-covering in Chongqing Power Grid

作　　者：蒋兴良[1] 杜珍[1] 莫文强[2] 李亚军[2] 张志劲[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 [2]重庆市电力公司,重庆400013

出　　处：《高电压技术》2011年第6期1336-1342,共7页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2009CB724501/502)~~

摘　　要：覆冰对电力系统而言是严重的自然灾害,详细了解重庆地区电网覆冰情况对输电线路设计和选择适当的防冰措施具有重要的指导意义。为此,根据对国内外现有的电网覆冰影响因素的分析,对重庆地区在特殊的气候、地形条件下电网覆冰情况进行了调查,根据不同地区海拔高度变化情况下导线覆冰厚度数值,建立了重庆地区电网覆冰厚度与海拔高度之间的数学模型,根据数学模型分析了电网覆冰的海拔高度特性,研究了重庆电网覆冰厚度及分布地区海拔高度间的变化特征。结果表明,重庆电网覆冰主要集中在东北及东南山脉地区,海拔高度对积冰厚度影响明显,输电线路上覆冰厚度随海拔高度增加而呈现指数规律增长。To learn the situation in Chongqing ice on power transmission line is of significance for design and selection of appropriate measures of preventing ice.Consequently,according to the analysis of the icing factors,we surveyed the ice conditions in Chongqing area in particular climate and terrain conditions,studied the Chongqing power grid and geographical distribution of ice thickness between altitude variations,established a mathematical model according to the relationship between the ice thickness in Chongqing area and elevation,and analyzed the altitude characteristics of ice-covering in Chongqing power grid.The results show that ice-covering of the Chongqing power grid ice concentrates on the mountain areas in the northeast and southeast regions,altitude on ice thickness has a significant effect,and the ice thickness on transmission line increases with altitude in an exponential rate.

关 键 词：重庆电网 覆冰 现场调查 海拔高度 覆冰模型 特性分析 

分 类 号：TM852[电气工程—高电压与绝缘技术]