| 重冰区输电塔–线体系导线断线分析 |
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| 引用本文： | 晏致涛,李正良.重冰区输电塔–线体系导线断线分析[J].中国电机工程学报,2010(7). |
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| 作者姓名： | 晏致涛 李正良 |
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| 作者单位： | 重庆大学土木工程学院; |
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| 基金项目： | 国家自然科学基金项目(50708118,50678181); 重庆市自然科学基金项目(2007BB0133)~~ |
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| 摘 要： | 断线事故会引起整个输电系统的振荡,甚至导致输电塔倒塌及产生火灾等次生灾害。考虑输电塔、导线、绝缘子等的非线性特性,建立了输电线路塔–线体系的断线耦合振动分析有限元模型。以向家坝—上海±800kV特高压直流输电线路为例,进行了断线工况振动非线性时程分析,分析了断线冲击荷载引起的导线跳跃、最大水平张力、绝缘子悬挂处和直线塔支座节点处的反力等。分析表明,断线的冲击荷载将对导线和输电塔均产生较大的动力放大效应,风荷载将加剧断线引起的振动。
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| 关 键 词： | 有限元模拟 非线性 动力效应 断线 输电线 振动 |
Analysis of the Transmission Tower-line System in Heavy Ice Regions Subjected to Cable Rupture |
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| YAN Zhi-tao,LI Zheng-liang.Analysis of the Transmission Tower-line System in Heavy Ice Regions Subjected to Cable Rupture[J].Proceedings of the CSEE,2010(7). |
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| Authors: | YAN Zhi-tao LI Zheng-liang |
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| Affiliation: | YAN Zhi-tao,LI Zheng-liang (College of Civil Engineering,Chongqing University,Shapingba District,Chongqing 400045,China) |
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| Abstract: | The vibration caused by the broken wire may make the transmission line system vibrate and the tower collapse, and even lead to fire accidents. Considering the non-linear characteristics of transmission towers, conductors and insulators, the vibration model of the broken wire in the transmission tower-line system was established by the finite element method. Take the 800 kV UHV DC transmission line from Xiangjiaba to Shanghai for example; the nonlinear vibration time history on cases of ruptured wire was ana... |
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| Keywords: | finite element modelling nonlinear dynamic effects cable rupture transmission lines vibration |
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