特高压耐张串对连续档导线张力弧垂计算的影响分析  

Analysis of Influence of UHV Tension String on Calculation of Laying Tension Sag of Continuous Traverse

作　　者：程述一 崔戎舰 刘文勋 CHENG Shuyi;CUI Rongjian;LIU Wenxun(State Grid Economic and Technological Research Institute,Beijing 102209,China;Central Southern China Electric Power Design Institute Co.,Ltd.,of China Power Engineering Consulting Group,Wuhan Hubei 430071,China)

机构地区：[1]国网经济技术研究院有限公司,北京102209 [2]中国电力工程顾问集团中南电力设计院有限公司,湖北武汉430071

出　　处：《湖北电力》2020年第4期1-7,共7页Hubei Electric Power

基　　金：国家电网有限公司科技项目(项目编号:1600-201955137A-0-0-00)。

摘　　要：特高压线路耐张串重量较超高压线路大幅增加,特别是±1 100 kV特高压线路,它不仅影响孤立档导线的放线张力弧垂,也影响连续档导线的放线张力弧垂。在典型边界条件下,基于两种架线施工方法,分别计算了耐张串重量对1 000 k V、±800 kV和±1 100 kV线路五档耐张段的放线张力弧垂的影响,并与未考虑耐张串重量的情况进行对比分析,给出特高压连续档架线施工的方法及杆塔定位弧垂的校验建议,供特高压线路设计及施工参考。The tension string weight of UHV line increases significantly compared with that of EHV line.Especially for the±1100 kV UHV transmission line,tension string not only affects the laying tension sag calculation of isolated spans,but also affects the laying tension sag of continuous spans.Under typical boundary conditions,this paper is based on two methods of line construction to respectively calculate the influence of the tension string weight on the laying tension sag of continuous five-span strain section of the 1000 kV,±800 kV and±1100 kV transmission lines,and makes comparisons with the case without considering the weight of the tension string.Finally,the paper presents the construction method of UHV continuous-rack transmission line and the calibration suggestions for tower positioning sag,which provides a reference for the design and construction of UHV lines.

关 键 词：线路 特高压 耐张串 张力 弧垂 

分 类 号：TM752[电气工程—电力系统及自动化]