750kV输电线路扩径导线工程应用深化研究

An In-Depth Study on the Engineering Application of Expanded-Diameter Conductors in 750 kV Transmission Lines

随着电力建设的发展,我国扩径导线的生产制造技术、设计施工技术已经成熟。目前,750 kV输电线路已经使用了六种不同型号的扩径导线。结合扩径导线在750 kV输电线路中的应用经验,综合分析和比较各类扩径导线的电气性能、机械性能和经济性能,提出了不同类型扩径导线的工程适用范围和应用原则,为扩径导线在后续750 kV和百万伏特高压输电线路中的应用和推广提供设计依据和参考。

With rapid development of electric power construction,the manufacture,design and construction technologies of the expanded-diameter conductor has matured in China.At present,six different types of expanded-diameter conductors are used in 750 kV transmission lines in China.Based on the application experience of the expanded—diameter conductors in750 kV transmission lines,this paper presents a comprehensive analysis and comparison of the electrical properties,mechanical performance and economic performance of all kinds of expandeddiameter conductors and puts forward the application range and principle for different expanded-diameter conductors and provide the design basis and reference for the further application and popularization of the conductors in the future 750 kV and UHVAC transmission line projects.