某特高压直流线路地线覆冰灾害分析与探讨  

Analysis and Discussion on Ground Wire Icing Disaster for a Certain UHV DC Line

作　　者：晁锐 张伟 李洋洋 崔寒珺 CHAO Rui;ZHANG Wei;LI Yangyang;CUI Hanjun(China Energy Construction Group Shaanxi Electric Power Design Institute Co.,Ltd.,Xi′an 710054,China)

机构地区：[1]中国能源建设集团陕西省电力设计院有限公司,陕西西安710054

出　　处：《湖南电力》2024年第1期136-139,共4页Hunan Electric Power

摘　　要：针对输电线路冰灾事故地点覆冰观测数据短缺的问题,以某±800 kV特高压直流线路地线覆冰断线的典型故障为例,尝试从气象要素、现场查勘、影像资料及现场覆冰调查等方面综合分析,结合覆冰形状,选取适当的计算方法估算覆冰量级,为覆冰资料短缺地区覆冰量级的快速确定提供一种简易的计算方法。通过采用不同覆冰条件下导线和地线弧垂间隙反算覆冰量级,验证了此种估算方法的可行性。In view of the shortage of icing observation data at the location of transmission line ice disaster,taking the typical fault of ground wire icing and disconnection of a±800 kV UHV DC line as an example,this paper attempts to comprehensively analyze the meteorological elements,on-site survey,image data and on-site icing investigation,and select the appropriate calculation method to estimate the icing magnitude in combination with the icing shape,so as to provide a simple calculation method for the rapid determination of icing magnitude in the area with insufficient icing data.The feasibility of this estimation method is verified by the inverse calculation of icing magnitude by using the sag gap between conductor and ground wire under different icing conditions.

关 键 词：特高压 输电线路 地线 覆冰灾害 

分 类 号：TM721.1[电气工程—电力系统及自动化]