电力学报2024，Vol.39Issue(2)：175-184,10.DOI:10.13357/j.dlxb.2024.020
白浙线长江大跨越±800kV/500kV交直流混压段张力架线施工优化
Optimization of Tension Line Construction in ±800kV/500kV AC-DC Mixed Voltage Section of the Yangtze River Crossing in Baizhe Line
钟文 1万华翔 1杨少春 1单长孝 1余刚1
作者信息
- 1. 安徽送变电工程有限公司,合肥 230022
- 折叠
摘要
Abstract
Based on the analysis of the tension erection construction scheme of the guide ground for the ±800 kV/500 kV AC-DC mixed tower erection in the Chizhou Yangtze River large span section of ultra high voltage(UHV)Baizhe Line project,combined with the performance of the scheme in the actual construction,the main ways and means to improve the construction efficiency of the large span closure overhead line are discussed.This is the first UHV large-span project that adopts ±800 kV single-loop DC and 500 kV double-loop AC mixed-voltage design in China.The span distance is 2 354 m,and there are 38 guide ground wires in the file.The construction scale is unusual,and conventional methods can not meet the construction needs.After a com-parative study of the schemes,combined with the actual engineering,the overall pay-off construction technolo-gy of 2×"2 pull 3"and 4×"1 pull 1"is adopted for ±800 kV DC and 500 kV AC respectively,and the setting of pay-off block,the selection of stretching equipment and the layout of the site,the configuration of traction ropes and boats are improved and optimized.The number of times of sealing-off and construction period are re-duced effectively,and the requirements of the project are met.After the actual engineering verification,on the basis of ensuring the quality of the project,all the construction tasks have been completed according to the re-quirements of the construction period.This technology is of great significance to improve the overall efficiency of large span line erection.关键词
架空输电线路/大跨越工程/交直流混压/张力架线/特高压Key words
overhead transmission line/large span/AC/DC mixed voltage/tension stringing/UHV分类
信息技术与安全科学引用本文复制引用
钟文,万华翔,杨少春,单长孝,余刚..白浙线长江大跨越±800kV/500kV交直流混压段张力架线施工优化[J].电力学报,2024,39(2):175-184,10.
