面向采空区的输电线路杆塔设计优化方法  

Optimization method of transmission line tower design for goaf

作　　者：宰红斌 刘云峰 卫栋 朱丹 上官明霞 单荣荣[3] ZAI Hongbin;LIU Yunfeng;WEI Dong;ZHU Dan;SHANGGUAN Mingxia;SHAN Rongrong(State Grid Jincheng Power Supply Company of Shanxi Electric Power Company,Jincheng 048000,China;State Grid Shanxi Electric Power Company,Taiyuan 030021,China;NARI Technology Co.,Ltd.,Nanjing 211106,China)

机构地区：[1]国网山西省电力公司晋城供电公司,山西晋城048000 [2]国网山西省电力公司,山西太原030021 [3]国电南瑞科技股份有限公司,江苏南京211106

出　　处：《电力工程技术》2021年第4期182-188,共7页Electric Power Engineering Technology

基　　金：国家重点研发计划资助项目(2017YFB0902800)。

摘　　要：由于现有输电线路杆塔材料弹性较差,且本体结构难以适用于采空区,因此提出面向采空区的杆塔设计优化方法。首先,提出一种输电线路杆塔拓扑优化方法,通过选择合适的杆塔支撑形式、边缘形式、内层数以及冗余数,以获得最优的杆塔结构。然后,采用纤维增强复合材料(FRP)替代传统的杆塔材料设计横担,保证杆塔处于弹性工作状态,提高其承载力。最后,基于回溯搜索算法(BSA)求解杆塔拓扑优化问题,在满足应力、位移等约束的前提下,实现杆塔尺寸、形状和拓扑的优化。基于Matlab中开发的有限元程序对文中方法性能进行实验论证,结果表明,与其他方法相比,文中方法的结构重量明显减少,且结构更具弹性,适用于采空区的实际应用。Due to the poor elasticity of the existing transmission line tower materials,and the difficulty of applying the body structure to the geographical characteristics of the goaf,an optimization method of transmission line tower design for goaf is proposed.Firstly,a method of transmission line tower topology optimization is proposed.By choosing appropriate tower support form,edge form,inner layer number and redundancy number,the optimal tower structure is obtained.Then,fiber reinforced composite(FRP)is used to replace the traditional pole tower material to design the cross arm,so as to ensure that the pole tower is in the elastic working state and improve its bearing capacity.Finally,based on the back-tracking search algorithm(BSA),the optimization problem of tower topology is solved.Under the constraints of stress and displacement,the optimization of tower size,shape and topology is realized.Based on the finite element program developed in Matlab,the performance of the proposed method is demonstrated.The results show that compared with other methods,the structure weight of the proposed method is significantly reduced,and the structure is more elastic,which is suitable for the practical application of goaf.

关 键 词：采空区 混合启发式 纤维增强复合材料(FRP) 回溯搜索算法(BSA) 输电线路杆塔 拓扑优化 

分 类 号：TM75[电气工程—电力系统及自动化]