输电线脱冰跳跃过程仿真研究  

Simulation Research on the Process of Ice Shedding and Jumping of Transmission Line

作　　者：孟遂民[1] 单鲁平[1] 杨暘[1] 

机构地区：[1]三峡大学机械与材料学院,湖北宜昌443002

出　　处：《水电能源科学》2010年第2期149-151,162,共4页Water Resources and Power

基　　金：三峡大学研究生科研创新基金资助项目(2009004)

摘　　要：针对输电线覆冰脱落使杆塔承受动态冲击荷载和不平衡张力,且导线的上下跳跃减小了相间导线电气间隙,采用有限元软件构建了某跨越段线路三自由度模型,数值仿真计算了导线脱冰的动力响应,并研究了风荷载作用下覆冰厚度、脱冰方式及导线应力对中间档导线脱冰的动力影响,供借鉴。Nowadays there is not a systemic evaluation method to analyze the external environment of transmission project. Based on the principle of index selection, this paper analyzes the influence of external environment on transmission project by combining typical indices with an improved entropy TOPSIS method. Experiment results show that the improved entropy TOPSIS method is reasonable, objective, practical and easy to implement. It makes up for the defect of conventional TOPSIS method and provides basis for the investment in power grid construction project.

关 键 词：输电线 脱冰 跳跃 找形 数值模拟 仿真分析 

分 类 号：TM752[电气工程—电力系统及自动化] TU311.3[建筑科学—结构工程]