粤北输电线路覆冰概况及原因分析  

Overview and Cause Analysis on Icing of Transmission Lines in North Guangdong

作　　者：毛先胤[1] 彭向阳[1] 姚森敬[1] 

机构地区：[1]广东电网公司电力科学研究院,广东广州510080

出　　处：《广东电力》2012年第2期62-66,共5页Guangdong Electric Power

摘　　要：针对粤北韶关、清远地区处于南海副热带暖湿气流与北方强冷空气交汇形成的"南岭静止锋"覆盖区域凝结层过冷却水极不稳定、一旦遇到硬物(如绝缘子等)极易形成雾凇、雨凇或者混合淞的问题,对2008年以来粤北电网输电线路的气候特点、覆冰情况、覆冰形成机理及冰闪原因进行了详细的介绍和分析,目的在于提高粤北地区输变电线路的抗冰闪能力,保障电力系统的安全稳定运行。Shaoguan and Qingyuan locate in overlay area of Nanling stationary front formed by joining between subtropical warm-moist air flow and strong cold air from the north, hence supercooled water in the condensation layer is rather instable and may easily be formed into rime, Silver thaw or mixed-phase ice once it meets hard stuff （ insulator, for example）. The paper expounds and analyzes climate characteristics, icing, formation mechanism of icing and causes for ice flashover in north Guangdong power grid since year 2008 to improve anti ice flashover of transmission and transformation lines in north Guangdong and guarantee stable operation of power system.

关 键 词：韶关地区 清远地区 输电线路 覆冰 冰闪 

分 类 号：TM75[电气工程—电力系统及自动化]