中冰区输电线路直线塔覆冰断线张力计算与分析  

Calculation and Analysis of Line Breaking Tension of Transmission Line Suspension Tower Covered with Ice in Medium Ice Area

作　　者：盛道伟 梁明 刘翰柱 何世雄 SHENG Daowei;LIANG Ming;LIU Hanzhu;HE Shixiong(Southwest Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Chengdu 610056,China)

机构地区：[1]中国电力工程顾问集团西南电力设计院有限公司,四川成都610056

出　　处：《电力勘测设计》2025年第3期26-30,共5页Electric Power Survey & Design

摘　　要：为开展中冰区直线塔断线张力计算及分析,在不同覆冰率、档距和绝缘子串长度等条件下,对等5档和等7档的中冰区输电线路断线张力进行计算,分析覆冰率、档距、绝缘子串长度及子导线分裂数等因素对断线张力百分数的影响规律,并与现行规程取值进行对比,提出中冰区特高压直流线路直线塔断线张力百分数取值建议。Calculation and analysis of the broken line tension of the suspension tower in the medium ice area are conducted.The broken line tension of five-span and seven-span transmission lines in medium ice area is calculated under various conditions including icing rate,span,and insulator string length.The effects of icing rate,span,string length and sub conductor splitting number on the breaking tension are analyzed and compared with the values in the current regulations.Suggestions for the percentage of breaking tension of suspension towers in ultra-high voltage direct current transmission lines in medium ice area were proposed.

关 键 词：输电线路 中冰区 断线张力 直线塔 

分 类 号：TM75[电气工程—电力系统及自动化]