摘要
220/110kV同塔六回塔型的选择,需重点分明地考虑以下几点:铁塔结构清晰、受力与传力应尽可能简单,并能满足分期架设和带电作业的要求;能满足耐雷水平要求,并尽可能降低双回乃至多回同时跳闸率;走廊宽度不宜过大,铁塔横担不宜太长,施工、运行及维护方便;同时,尽可能优化杆塔结构,以降低铁塔耗钢量;还应对同塔多回路运行情况:断线、倒塔、风偏以及雷击跳闸率、单回跳闸率、多回同期跳闸(异名相故障等)的跳闸率等进行深入调查、分析研究。
In 220/110 kV six-circuit line tower selection, it is necessary to emphasize following considerations： tower structure must be clear, force applied and transferred must be as simple as possible, and it must meet staged stringing and live-line operation requirements; it must meet lightning withstand requii＇ements and reduces double- or muhi-circuit trip rates as far as possible; the corridor should not be too wide, cross ann should not be too long, and should be easy for construction, operation, and maintenance; in the mean time, the pole and tower structure should be optimized as far as possible to reduce steel consumption. Besides, in -depth investigations and analysis of line broken during operation, tower collapse, windage, and lighting-caused trip rate, single- and multi-circuit trip rates, multi-circuit synchronized trip （different phase failure） should be carded out.
出处
《电力建设》
2008年第8期50-54,共5页
Electric Power Construction
关键词
输电线路
六回路同塔
设计
transmission line
six-circuit line
design
