| 220kV架空分裂导线的应力动态分析 |
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| 引用本文： | 雷鸣,刘刚,杨挺.220kV架空分裂导线的应力动态分析[J].电工电能新技术,2009,28(3). |
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| 作者姓名： | 雷鸣 刘刚 杨挺 |
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| 作者单位： | 1. 华南理工大学电力学院,广东,广州,510640
2. 中国南方电网有限公司,广东,东莞,523000 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 为了更好地评估过电流对水平排列导线伸长、导线间距的影响,研究了导线间距与电磁力相互作用的机理.通过建立输电线路为抛物线模型,利用模型计算导线电磁力、导线长度、导线拉应力,并分析计算拉应力、电流等因素对分裂子导线导线伸长、间距的影响.继而利用数值计算软件求出不同状态下子导线最小间距,并分析不同电流对导线间最小距离的影响,综合以上分析,建立过电流下导线伸长动态模型.基于以上分析可知:各种因素对导线伸长和最小间距存在影响,伸长与电磁力相互促进;动态模型显示导线伸长过程中各种参数变化,与导线粘连临界状态参数进行比较以判定导线粘连,并提出相应预防粘连的措施.
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| 关 键 词： | 过电流 导线粘连 最小间距 动态模型 临界状态 参数变化 |
Dynamic analysis on stress of overhead bundle conductor |
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| LEI Ming,LIU Gang,YANG Ting.Dynamic analysis on stress of overhead bundle conductor[J].Advanced Technology of Electrical Engineering and Energy,2009,28(3). |
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| Authors: | LEI Ming LIU Gang YANG Ting |
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| Affiliation: | LEI Ming~1,LIU Gang~1,YANG Ting~2(1.South China University of Technology,Guangzhou 510640,China,2.China Southern Power Grid Company,Dongguan 523000,China) |
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| Abstract: | In order to better assess the level of over-current affects on arranged wires elongation and wire spacing,the interaction mechanism between wire spacing and the electromagnetic force is studied.Through the establishment of the parabola model for a transmission line,the model is used to calculate wire electromagnetic force,wire length,wire tensile stress and to analyze the effects of factors of current and tensile stress on wire stretch and spacing.Then the use of numerical simulation software obtains the sm... |
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| Keywords: | over-current wire conglutination minimum spacing dynamic model critical state parameters change |
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