“三跨”段导线耐张串联塔三挂点设计  

Three Hanging Point Design of“Three-span”Conductor Tension Series

作　　者：王晓涵 郭春晓 郑斌 朱小强 王茂成 WANG Xiaohan;GUO Chunxiao;ZHENG Bin;ZHU Xiaoqiang;WANG Maocheng(State Grid Yantai Power Supply Company,Shandong Yantai 264001,China;State Grid Penglai District Power Supply Company,Shandong Penglai 265600,China;State Grid Shandong Electric Power Supply Company,Shandong Jinan 250011,China;Jiangsu Tian-nan Electric Power Co.,Ltd.,Jiangsu Rugao 226522,China;Yantai Dong Yuan Power Design Co.,Ltd.,Shandong Yantai 264001,China)

机构地区：[1]国网山东省电力公司烟台供电公司,山东烟台264001 [2]国网山东省电力公司烟台市蓬莱区供电公司,山东蓬莱265600 [3]国网山东省电力公司,山东济南250011 [4]江苏天南电力股份有限公司,江苏如皋226522 [5]烟台东源电力设计有限公司,山东烟台264001

出　　处：《农村电气化》2025年第2期10-14,共5页Rural Electrification

基　　金：2022年国网山东省电力公司“揭榜挂帅”职工技术创新联盟专业重大攻关项目(110~220 kV输电线路“三跨”联结技术攻关)(No.7)。

摘　　要：为了确保“三跨”段导线耐张串在联塔处不发生掉串,采取“双联三挂点”设计理念,在正常工况下仅有联塔金具串受力,实现导线耐张串的“双联单挂点”,确保正常运行工况下2支复合绝缘子受力均衡;2个联塔备份串设计为“软连接”,在正常工况下不受力,只有在联塔金具串断联后才受力,实现2个联塔备份串和双联绝缘子的“双联双挂点”;经挂网试应用,至今运行良好。In order to ensure that the"three-span"conductor tension series does not fall off at the connecting tower,the design concept of"Double triple hanging point"is adopted.Under normal working conditions,only the connecting tower metal string is subjected to force,thus realizing the"Double single hanging point"for the conductor tension series,to ensure the force balance of the two composite insulators under normal operating conditions.The two tower backup strings are designed as"Soft connection",which does not bear force under normal operating conditions,and only bear force after the metal string are broken,realizing two tower backup strings and double hanging point of double insulator.After trial application on the internet,the effect is good.

关 键 词：110~220 kV “三跨” 导线耐张串 联塔型式 金具串 双联三挂点 

分 类 号：TM216[一般工业技术—材料科学与工程]