《架空输电线路荷载规范》对500 kV线路杆塔的影响分析  

Analysis on the Impact of Load Code for the Design of Overhead Transmission Line on the Tower of 500 kV Line

作　　者：王金龙 蒙春玲 WANG Jin-long;MENG Chun-ling(Shanxi Electric Power Engineering Co.,Ltd.of CEEC,Taiyuan 030001,China)

机构地区：[1]中国能源建设集团山西省电力勘测设计院有限公司,山西太原030001

出　　处：《电力勘测设计》2022年第5期24-29,共6页Electric Power Survey & Design

摘　　要：风荷载是输电线路杆塔的主要承受荷载之一,在悬垂塔中的影响比重占60%左右,在耐张塔中的影响比重占30%左右。DL/T 5551—2018《架空输电线路荷载规范》对部分荷载计算进行了修订,对杆塔和导地线风荷载中的多个参数重新定义。通过比较DL/T 5551—2018《架空输电线路荷载规范》与GB 50545—2010《110 kV~750 kV架空输电线路设计规范》差异,以2011版通用设计杆塔5A2-ZBC2和5A2-JC2为例,分析导地线风荷载计算公式修订前后参数变化及其对风荷载和比载的影响,分析杆塔风振系数计算调整前后该系数取值的变化,最后综合分析荷载规范变化对500 kV线路塔重的影响。Wind load is one of the main loads of transmission line towers,the impact in the suspension tower is about 60%and the impact in the strain angel tower is about 30%.Part of the load calculation was revised in the DL/T 5551—2018 Load Code for the Design of Overhead Transmission Line,Several parameters in the wind load on wire and support have been redefined.By comparing the differences between DL/T 5551—2018 Load Code for the Design of Overhead Transmission Line and GB 50545—2010 Code for Design of 110 kV~750 kV Overhead Transmission Line,take the 2011 version of the universal design 5A2-ZBC2 and 5A2-JC2 as an example,the effect of wind load change on wind load of wire and support is analyzed.The effect of load specification change on 500 kV line tower weight is analyzed.

关 键 词：500 kV输电线路 荷载规范 风荷载 杆塔 

分 类 号：TM75[电气工程—电力系统及自动化]