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1、高电压技术第36卷第3期2010年3月31日HighVoltageEngineering,Vol.36,No.3,Mar.31,2010775输电线路覆冰与导线温度和微气象参数关联分析11111122阳林,郝艳捧,黎卫国,李昭廷,戴栋,李立浧,罗兵,朱功辉(1.华南理工大学电力学院,广州510640;2.南方电网技术研究中心,广州510623)摘要:针对目前微气象参数等与覆冰的相关性分析不全面、不系统,无法确定主要影响因素的问题。统计了贵州电网输电线路覆冰在线监测系统于2008年冬末至2009年春末监测到的线路覆冰状况,指出线性相关分析定量结果与定性分析不符,提出了一种邓氏灰色
2、关联度和灰色斜率关联度相结合的灰色综合关联分析方法,并确定了覆冰和各个参数(导线温度和环境温度、相对湿度、风速等微气象参数等)之间的关联度。结果表明:海拔高度对覆冰的严重程度和持续时间均有一定的影响;环境温度、导线温度、相对湿度和风速均与覆冰存在较大相关性,其中环境温度和导线温度与覆冰的相关性明显强于相对湿度和风速,即温度是影响覆冰的主要因素。关键词:覆冰;导线温度;环境温度;相对湿度;风速;灰色综合关联分析中图分类号:TM726;TM75文献标志码:A文章编号:100326520(2010)0320775207RelationshipsAmongTransmissionLin
3、eIcing,ConductorTemperatureandLocalMeteorologyUsingGreyRelationalAnalysis111111YANGLin,HAOYan2peng,LIWei2guo,LIZhao2ting,DAIDong,LILi2cheng,22LUOBing,ZHUGong2hui(1.SchoolofElectricpower,SouthChinaUniversityofTechnology,Guangzhou510640,China;2.TechnologyResearchCenter,ChinaSouthernGrid,Guangz
4、hou510623,China)Abstract:Correlationbetweenlocalmeteorologyparametersandtheoverheadtransmissionlineicingwasnotcom2prehensiveandsystemiccurrently,sothepredominateinfluentialfactoronicingcouldnotbeconfirmed.Theover2headtransmissionlineicingstatuswasstatisticallyanalyzed,andthedatawererecordedd
5、uringtheperiodbetweenNovember2008andMay2009atGuizhouPowerGridbymeansofon2linemonitoringandprecautionsystem.There2sultunconformitybetweenlinecorrelationwasqualitativelyanalyzed,moreover,thesyntheticgreyrelationalanaly2sis,whichcombinedgeneralrelationaldegreeproposedbyDengwithsloperelationalde
6、gree,wasconstructedtore2alizetherelationshipsamongtransmissionlineicing,conductortemperatureandlocalmeteorologyparameters,suchasambienttemperature,relativehumidity,windspeed,etc..Theresultsshowaltitudeaffectsicecoverordurationtosomeextent.Therearerelativelyconspicuouscorrelationsamongtransmi
7、ssionlineicing,conductortemperatureandlocalmeteorology.Andthedegreeofrelationbetweenicecoverandconductortemperatureorambienttempera2tureismarkedlyhigherthanrelativehumidityorwindspeed,indicatingthattemperatureisthedecisivefactoramongthem.Keywords:i
