计及经济性的复合杆塔设计方法

Composite Tower Design Method Considering Economy

摘要:

随着中国电网建设的发展，输电线路将越来越多，但传统的全钢制杆塔存在质量重、易锈蚀、消耗了大量矿产能源等缺陷。现提出一种复合杆塔方案，可同时提升杆塔经济性及可靠性。首先，结合间隙圆要求及有限元电场分析确定塔头尺寸及绝缘配置，使电场分布更加均匀；然后，在分析复合材料性能基础上，利用ANSYS软件对复合杆塔进行受力分析确认构件尺寸，并校核各工况下承受力；最后，对复合杆塔的造价进行计算，并与传统全钢制杆塔对比。计算及仿真结果表明，所提出的500 kV双回路复合杆塔满足各种工况下的荷载及绝缘要求，同时经济性好。

Abstract:

With the development of power grid construction, there will be more and more transmission lines across the country. However, the traditional all steel poles and towers have some defects, such as heavy quality, rust prone, consuming a lot of mineral energy and so on. At this stage, the composite material technology is becoming more and more mature. So, a composite tower scheme is proposed to improve the economy and reliability of towers. Firstly, the size and insulation configuration of tower head are determined according to the requirements of clearance circle and finite element electric field analysis, so as to make the electric field distribution more uniform. Secondly, based on the analysis of the performance of composite materials, the force analysis of composite tower is carried out by using ANSYS software to confirm the component size and check the bearing force under various working conditions. Finally, the cost of composite tower is calculated and compared with the traditional all steel tower. The calculation and simulation results show that the proposed 500 kV double circuit composite towers meet the load and insulation requirements under various working conditions, and has a good economy.