河西走廊四回特高压直流输电线路布置方式研究

Study on Layout of Four UHV DC Transmission Lines in Hexi Corridor

河西走廊内两回±800 kV、两回±1100 kV共四回特高压直流线路并行,为确保线路安全可靠,节省土地资源,减小线路走廊宽度,文章从铁塔布置方式、电磁环境影响、电气安全距离控制方面考虑,计算出了四回特高压直流线路间最小中心距离,为线路的设计提供了参考意见。

Four UHV DC transmission lines, including two ±800kV DC transmission lines and two ±1100kV DC transmission lines, are paralleling in Hexi Corridor. Considering tower arrangement, electromagnetism environment and electrical safety distance, this paper calculates the minimum center - to - center distance of the four lines in order to ensure their safe operation, save soil resources and reduce the width of line corridors. The calculation results serve as reference for transmission line design.