摘要
根据准东—华东±1100 kV特高压直流输电线路工程的电压等级、输送容量以及以往同类工程导线应用情况,通过电磁环境和技术经济比较推荐该输电线路工程导线铝截面面积为8×1250 mm^2。通过对不同钢芯结构进行分析,推荐平丘地区采用8×JL/G3A-1250/70型钢芯铝绞线,山区采用8×JL/G2A-1250/100型钢芯铝绞线。最后,将2种推荐导线与大截面导线JL/G2A-1520/125型钢芯铝绞线进行了技术、经济性比较,结论为在该标段实际情况下,JL/G3A-1250/70型导线具有优势。
According to Zhundong- Huadong ± 1100 kV UHV DC transmission project voltage level, transmission capacity and previous similar projects, through electromagnetic environment and technical-economic comparison of the lines, determined the recommended aluminum conductors section： 8×1250 mm^2. Then according to the recommended aluminum section, selected different steel core structure, through technical and economic comparison,elected the technical and economic optimum of 8×JL /G3A-1250/70 as recommended line of flat hill region, 8 × JL/G2A- 1250/100 steel core aluminum stranded wire used in mountainous areas. Finally, 2 kinds of recommended lines were compared with the large section conductor JL/G2A-1520/125 steel core aluminum strand line in the technical and economic, thought that JL/G3A-1250/70 was still advantage.
出处
《内蒙古电力技术》
2016年第1期25-31,共7页
Inner Mongolia Electric Power
关键词
特高压直流输电
输电线路
导线选型
大截面导线
电磁环境
年费用
UHV DC transmission
transmission line
line type selection
large section conductor
electromagnetic environment
annual cost
