承力索带电同档跨越2回500kV线路施工技术

Construction Technology of On-line Crossing over two 500 kV Circuits with Load Carrying Cable

在蔡白线输电线路施工中,使用承力索带电跨越2回500kV运行线路施工是一次技术创新,施工难度主要在于首次同时跨越2条500kV带电线路、跨越档距大以及需要考虑天气等不确定因素。施工中采取了相应的措施防止导线偏出封顶网及导线落在封顶网上后承力索下降。通过研究承力索搭设操作过程,总结了带电跨越线路施工的技术方案。

In the construction of Cai-Bai Line, load carrying cables are used to cross over two 500 kV live lines, which is a technological innovation The major challenges for the project are on-line crossing over two 500 kV live circuits with large span for the first time, and weather uncertainties.