辽宁省电线覆冰特征及冰区重现期标准冰厚分布  

Characteristics of wire icing and distribution of standard ice thickness during ice return period in Liaoning province

作　　者：唐亚平 张凯[2] 李岚[2] 谭世君 李忠娴[3] 李进虎[4] 万志强[2] 祝新宇[3] 

机构地区：[1]辽宁省气象局,辽宁沈阳110001 [2]辽宁省气象服务中心,辽宁沈阳110166 [3]辽宁省防雷技术服务中心,辽宁沈阳110166 [4]青海省气象局,青海西宁810000

出　　处：《气象与环境学报》2015年第4期58-64,共7页Journal of Meteorology and Environment

基　　金：公益行业(气象)专项(GYHY201106001);辽宁省气象局重点科研项目(201401;201503);辽宁省气象局备案项目(201404);辽宁省交通专家型预报团队共同资助

摘　　要：开展输电线覆冰特征及冰区重现期标准冰厚分布的研究,对防止电线冰冻灾害事故、开展电网设计及相关工程气候可行性论证具有科学指导意义。利用1980—2011年辽宁省11个气象观冰站电线覆冰资料,采用极值Ⅰ型概率分布模型、地形修正和经验修正等方法,对辽宁省电线覆冰特征及冰区重现期标准冰厚的分布进行分析。结果表明:1980—2011年辽宁省东部山区、南部沿海、西部及西南部沿海地区是冰冻天气现象多发地区,30 a、50 a和100 a冰区重现期最大标准冰厚分别为10.0 mm、11.9 mm和14.4 mm,均出现在丹东地区。Studying wire icing characteristics and distribution of standard ice thickness during the ice return period has an important scientific significance to prevent a freezing disaster accident and develop wire of electric power design and related engineering climate feasibility demonstration. Based on wire icing observation data from 1980 to 2011 at 11 meteorological stations of Liaoning province, the characteristics of wire icing and distribution of standard ice thickness during the ice return period in Liaoning province were analyzed by methods of an extreme probability distribution model, a terrain correction and an empirical correction. The results indicate that ice freezing weather often happens in the east mountain areas, south coastal area, west and southeast coastal areas of Liaoning province. The maximum values of standard ice thickness in 30-year, 50-year and 100-year return periods are 10.0 mm, 11.9 mm and 14.4 mm respectively, and they all occur in Dandong area.

关 键 词：电线覆冰 重现期 标准冰厚 

分 类 号：P426.33[天文地球—大气科学及气象学] TM75[电气工程—电力系统及自动化]