±800kV特高压直流输电塔线体系的气弹模型与风场模拟  

Aeroelastic Model and Wind Field Simulation for ±800kV UHVDC Transmission Tower Line System

作　　者：任坤 肖正直[2] 吴丽红[3] 

机构地区：[1]佛山电力设计院有限公司,广东佛山528200 [2]重庆大学土木工程学院,重庆400030 [3]华中科技大学电气与电子工程学院,湖北武汉430074

出　　处：《广东电力》2014年第10期74-78,共5页Guangdong Electric Power

基　　金：国家自然科学基金资助项目(50678181)

摘　　要：针对±800 kV特高压直流输电工程存在风致响应过大的问题,采用空气动力学理论中的弹性相似理论,建立以满足输电塔线原型结构和高度风洞试验段截面尺寸要求为目标的气弹模型,并测试和分析该模型的动力特性;同时,在考虑风场模拟的湍流强度、湍流风功率谱和平均风速分布等因素的基础上,建立模拟风洞实验。以某区域电网直流输电工程为例,通过理论分析和实际检测对比,验证了该塔线体系模型的动力特性可以满足气动弹性试验的要求。Aiming at large wind-induced response of ±800 kV UHVDC power transmission engineering,this paper introduces establishment of a kind of aeroelastic model with the goal of satisfying requirements of power transmission tower line struc-ture and sectional dimension of high wind tunnel testing section by using elasticity similarity theory in aerodynamics theory. Dynamic characteristics of this model was tested and analyzed as well.On the basis of considering turbulent intensity,turbu-lent wind power spectrum and average wind speed distribution of wind field simulation,a simulating wind tunnel experiment was established.Taking one direct current power transmission engineering in some region as an example and by means of theoretical analysis and practical detection comparison,dynamic characteristics of this tower line system model was proved to be satisfied for requirement of aeroelasticity experiment.

关 键 词：特高压直流输电 塔线体系 气弹模型 风场模拟 动力特性 

分 类 号：TM75[电气工程—电力系统及自动化]