特高压直流线路中垂直排列F型塔的设计与优化

输电线路走廊问题已成为制约电网建设的突出问题。在经济发达地区，可以考虑采用垂直排列F型塔减少走廊占用，降低工程实施难度。F型塔在三峡-上海±500 kV线路上有过成功应用，但是在特高压线路中属首次使用，由于电压等级、输送容量不同，导致电磁环境、导线截面、杆塔荷载均与原设计有较大不同。通过开展特高压直流线路垂直排列专题研究，确定了垂直排列的F型塔的导线布置型式、导线最小对地距离和走廊宽度等基本原则，并结合工程中的实际问题提出了优化方案。

Design and Optimization of F-type Tower Vertically Arranged Along UHVDC Power Transmission Line

Transmission line corridor has become a prominent problem that restricts power grid construction. In the economically developed regions, vertically arranged F-type tower could be applied to reduce the corridor occupied and the difficulty of project construction. F-type tower had a successful application in the Three Gorges-Shanghai ± 500 kV transmission line project, but it was firstly used for UHV transmission line. Because of higher voltage level and larger transmission capacity, the electromagnetic environment, conductor section, and tower loads are greatly different from those in original design. Through the monographic study of UHVDC transmission lines with vertically arrangement, the basic principles of the conductor arrangement type, conductor’s minimum distance from ground, and corridor width of the F-type tower with vertical arrangement were determined, and the optimization scheme was proposed combined with the actual issues in the project.