大跨越输电塔—线体系脱冰振动模型试验  

Model Test Study on Deicing Vibration of Long Span Transmission Tower-line System

作　　者：刘春城[1] 沈磨群[1] 张莹[1] 祁西汉[1] 

机构地区：[1]东北电力大学建筑工程学院,吉林吉林132012

出　　处：《水电能源科学》2013年第7期191-195,共5页Water Resources and Power

基　　金：国家自然科学基金资助项目(50978049);吉林省自然科学基金资助项目(20101554);中国电机工程学会电力青年创新基金资助项目(200836)

摘　　要：输电线路脱冰振动响应给电网的正常运行带来重大的安全隐患。为精确分析大跨越输电塔—线体系中导地线脱冰对铁塔造成的动力冲击响应,以晋东南—南阳—荆门1 000kV特高压输变电工程中的黄河大跨越段为原型,对覆冰条件下五塔四档线塔—线体系模型的脱冰冲击响应进行了模拟试验,通过对比分析塔—线体系在不同脱冰工况下杆塔的动力响应,获得输电杆塔的最不利脱冰工况,找出了输电塔在脱冰冲击作用下的最不利位置。利用ANSYS软件建立与试验模型相应的输电塔线体系模型,采用完全法瞬时动力分析模拟导、地线脱冰,提取各个测点应变,所得结果与试验结果吻合。The deicing vibration of transmission tower line system bring significant security risk to the normal operation of power network. In order to accurate study the dynamic shock response of long span transmission tower-line system deicing on the tower structure, taking the Yellow River long span transmission lines in Jindongnan-Nanyang-Jingmen 1 000 kV ultra high voltage （UHV） transmission project as prototype, deicing shock simulation test of transmission tow- e^line system is carried out to find out the dynamic response of tower structure under different icing conditions. By com- paring and analyzing the dynamic response of tower structure on deicing, the most unfavorable on deicing conditions and position of tower is investigated. ANSYS software is used to establish the transmission tower-line system model corresponding to the test model. The full method transient dynamic analysis is applied to simulate conductor and grounding wires deicing and extract strain of each measure point. The result is consistent with the experiment.

关 键 词：脱冰 输电塔 塔-线体系 模型试验 冲击响应 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3