1000 kV特高压30 mm重冰区水平耐张塔地线支架高度取值研究  

Study on the Height of Ground Wire Support of Horizontal Tension Tower in 1000 kV UHV 30 mm Heavy Ice Area

作　　者：刘庆丰 莫咏衡 张胜 LIU Qingfeng;MO Yongheng;ZHANG Sheng(China Energy Engineering Group Hunan Electric Power Design Institute Co.,Ltd.,Changsha 410007,China)

机构地区：[1]中国能源建设集团湖南省电力设计院有限公司,湖南长沙410007

出　　处：《电力勘测设计》2023年第7期13-16,22,共5页Electric Power Survey & Design

摘　　要：1000 kV特高压30 mm重冰区水平耐张塔地线支架高度关系到导地线脱冰跳跃距离,地线表面场强大小以及防雷保护效果。采用电位系数法,导地线应力状态方程和不平衡张力计算理论,结合脱冰跳跃真型试验成果,从地线表面场强、防雷保护、脱冰跳跃三个方面进行分析计算,综合得出水平耐张塔地线支架高度取值。The ground wire support height of the horizontal tension tower in the 30 mm heavy ice area of 1000 kV UHV is related to the deicing jumping distance of the conductor and ground wire,the surface field strength of the ground wire and the lightning protection effect.In this paper,the electric potential coefficient method,the stress state equation of conductor and ground wire and the calculation theory of unbalanced tension are used respectively.Combined with the results of icing jump test,the ground wire surface field strength,lightning protection and icing jump are analyzed and calculated,and the ground wire support height of horizontal tension tower is obtained.

关 键 词：特高压 重冰区 水平耐张塔 地线支架 

分 类 号：TM726[电气工程—电力系统及自动化]