电网冰区分级方法研究  

Classification Method of Icing Area in Power Grid

作　　者：杨加伦[1] 朱宽军[1] 刘彬[1] 李兴宇[2] 陈权亮[3] 司佳钧[1] 

机构地区：[1]中国电力科学研究院,北京市100192 [2]中国科学院大气物理研究所,北京市100029 [3]成都信息工程学院,成都市610225

出　　处：《电力建设》2014年第1期19-23,共5页Electric Power Construction

基　　金：国家自然科学基金(51305411;51008288)

摘　　要：电网冰区等级划分是电网建设的重要环节之一。电网冰区等级划分过低,有可能导致输电线路无法抵御覆冰危害,造成断线甚至倒塔等现象;冰区等级划分过高,会造成线路建设、运维及改造成本升高,导致资源的浪费。为了科学合理地划分电网冰区等级,讨论了5种电网冰区分级方法,包括经验调查法、覆冰数据法、CRREL模型法、气象参量回归法、局地地形-气象影响覆冰等级模型法,以及各种方法的分级步骤和使用特点。The classification of icing areas is one of the critical steps of the power grid construction. If the design ice thickness is underestimated,power transmission lines may not be able to withstand the influence of accreted ice,which might result in transmission line breaking or even tower collapse. On the other hand,if the design ice thickness is overestimated, the cost of construction,maintenance,and reconstruction may be increased to result in resources waste. With the aim of reasonable classification of icing area for power grid,five classification methods were discussed,including method of experience investigation,method of icing data,method of CRREL model,stepwise regression method of meteorological parameters,and model method of local topology-meteorology influence on icing classification. Finally,the classification steps and application features were discussed.

关 键 词：输电线路 冰区分级 经验调查法 覆冰数据法 CRREL模型法 气象参量回归法 局地地形-气象影响覆冰等级模型法 

分 类 号：TM726[电气工程—电力系统及自动化]