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| 架空线路导线分层力学模型及应用 | |
| 引用本文： | 蔡斯特,芮晓明,倪海云.架空线路导线分层力学模型及应用[J].电力建设,2009,30(11):8-12. |
| 作者姓名： | 蔡斯特 芮晓明 倪海云 |
| 作者单位： | 1. 云南电网公司华北电力大学研究生工作站,昆明市,650217 2. 华北电力大学能源与动力工程学院,北京市,102206 3. 云南电力设计院,昆明市,650051 |
| 基金项目： | 云南电网公司科技项目 |
| 摘 要： | 架空输电线路导线多为绞线,其应力一般用状态方程计算,计算时不考虑扭绞的影响,将多种外载荷简化为张拉力。以2008年年初南方冰灾对云南电网的影响为背景,提出将材料力学中经典的应力-应变曲线与导线结构特性和工作状态相结合的思路,建立各股线的分层力学模型,推导各层股线的应力分配数值。以常见导线为例进行强度、疲劳的计算分析。计算结果表明,该力学模型与导线实际受力后断股、断线情况较为吻合,且适用于多种绞线,能较好地应用在导线机械性能计算中,可作为导线参数选择、结构优化的数值分析方法。 |
| 关 键 词： | 架空线路 导线 应力-应变 数学模型 机械性能 |
Application and Study on Stratified Mechanical Model of Overhead Conductors |
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| CAI Si-te,RUI Xiao-ming,NI Hai-yun.Application and Study on Stratified Mechanical Model of Overhead Conductors[J].Electric Power Construction,2009,30(11):8-12. | |
| Authors: | CAI Si-te RUI Xiao-ming NI Hai-yun |
| Affiliation: | CAI Si-te1,RUI Xiao-ming2,NI Hai-yun3 (1.Graduate Work Station of NCEPU-Yunnan Power Grid,Kunming 650217,China,2.Institute of Energy , Power Engineering,North China Electric Power University,Beijing 102206,3.Yunnan Power Design Institute,Kunming 65005,China) |
| Abstract: | Most overhead transmission line's conductors are stranded wire,ignoring the effect of twist on its stress,overhead line's stress on conductors is always calculated by status equations in actual projects.Multiple external loads are simplified to tensioning force.On the background of the southern ice disaster's effect on Yunnan Power Grid at the beginning of 2008,the paper put forward a thought that combined the classical stress-strain curve in material dynamics with conductor structures and their working sta... |
| Keywords: | overhead line conductor stress-strain mathematical model mechanical properties |
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