特高压Ⅴ型复合绝缘子串夹角设计研究  

Research on Design of Included Angle of UHV Ⅴ-shape Composite Insulator

作　　者：卢明 林成龙[2] 李黎[2] 王广周 LU Ming;LIN Chenglong;LI Li;WANG Guangzhou(Electric Power Research Institute of State Grid Henan Electric Power Co.Ltd.,Zhengzhou,Henan450052,China;School of Civil Engineering&Mechanics,Huazhong University of Science&Technology,Wuhan,Hubei430074,China)

机构地区：[1]国网河南省电力有限公司电力科学研究院,河南郑州450052 [2]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《广东电力》2018年第12期99-105,共7页Guangdong Electric Power

基　　金：国家电网有限公司重大科技指南项目(52170215000C)

摘　　要：针对自然环境中导线受风荷载作用产生摆动引起的风偏跳闸问题,以某1 000kV线路为研究对象,编写了芯棒复合材料UMAT子程序,使用ABAQUS软件建立复合绝缘子串模型,利用该模型,采用有限元法分析复合绝缘子的屈曲特性,研究了Ⅴ型复合绝缘子串(以下简称"Ⅴ串)的风偏变形特性,以此推导考虑背风串受压时Ⅴ串夹角计算方法;采用谐波叠加法生成线路人工脉动风场,研究脉动风对Ⅴ串夹角设计的影响。结果表明:复合绝缘子串具有较大的变形能力,考虑背风串受压以及脉动风影响时,Ⅴ串夹角的1/2可比最大风偏角小约6°。Aiming at the problem of windage tripping caused by conductor swing in the natural environment under the effect of wind load,this paper takes one1000kV line as an example and writes user-defined material(UMAT)subroutine for the core rod.It uses ABAQUS software to establish a composite insulator string model which is used to analyze buckling characteristics of the composite insulator based on the finite element method.It studies windage deformation characteristics of the V-shape composite insulator string(thereafter as V-string)and derives a calculation method for V-string included angle as considering leeward insulator compression.In addition,it studies effect of fluctuating wind on V-string included angle by adopting the harmonic superstition method to generate an artificial fluctuating wind field.The research results indicate the composite insulator string has greater deformability,and half of the included angle of V-string can be smaller than the maximum wind yaw angle by about6°as considering effect of leeward insulator compression and fluctuating wind.

关 键 词：特高压 V型 复合绝缘子 风偏 变形特性 脉动风 

分 类 号：TU318.1[建筑科学—结构工程] TM216[一般工业技术—材料科学与工程]