500kV双回路复合横担紧缩型塔设计及数值模拟分析

Design Method and Numerical Simulation Analysis on 500kV Double Circuit Composite Cross-arm Shrunk Type Tower

为在500kV双回路输电线路工程中有效应用复合材料横担,通过合理利用复合材料高强、绝缘的材料性能,可有效减短悬垂串长度,降低塔高,同时对复合横担塔进行了优化设计,得到可有效减小输电走廊宽度的紧缩型复合横担设计方案;随后通过数值模拟对复合横担进行分析确定横担规格,在此基础上进一步对整塔做有限元分析,验证复合横担塔可满足实际工程应用需要。最终通过经济性分析,表明复合横担塔具备良好的经济性,应用前景广阔。

In order to apply FRP cross-arm in 500kV double circuit transmission lines,the high-strength and insulating material properties of the composite materials can be fully utilized,which can effectively shorten the length of the suspension string and reduce the height of the tower.Meanwhile,the optimization design scheme for FRP crossarm tower is proposed,and the shrunk type tower design scheme can effective reduce the transmission corridor width.Then based on the numerical simulation analysis,the size of FRP crossarm is defined.Afterwards,the true type tower is analyzed by mechanical test and numerical simulation.By comparison the results of test and numerical simulation,the design scheme can meet the requirements of engineering application.Finally The economical analysis suggests that the scheme has favorable economical and wide application prospects.