| 架空输电线路增容过程中导线弧垂的计算方法分析 |
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| 引用本文： | 单周平,陈春.架空输电线路增容过程中导线弧垂的计算方法分析[J].湖南电力,2012,32(1):5-8. |
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| 作者姓名： | 单周平 陈春 |
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| 作者单位： | 1. 湖南省电力公司科学研究院,湖南长沙,410007
2. 湖南大学,湖南长沙,410082 |
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| 摘 要： | 架空输电线路增容主要受限于导线弧垂增大带来的安全隐患。本文以导线的基本方程和导线热平衡方程为基础推导出架空输电线路导线弧垂随潮流变化的理论计算方法。研究表明，该方法在充分考虑各种气象环境因素的前提下，可以准确计算导线弧垂随潮流的变化规律，对充分利用架空输电线路的隐性容量，确保负荷高峰期及系统N-1状态下的点位安全运行具有重要意义。
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| 关 键 词： | 线路增容 导线热平衡方程 隐形容量 |
Analysis on theoretical calculation method of line sag on overhead line rating capacity |
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| SHAN Zhou-ping
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CHEN Chun.Analysis on theoretical calculation method of line sag on overhead line rating capacity[J].Hunan Electric Power,2012,32(1):5-8. |
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| Authors: | SHAN Zhou-ping CHEN Chun |
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| Affiliation: | 1. Human Electric Power Corporation Research Institute, Changsha 410007, China; 2. Human University, Changsha 410082, China) |
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| Abstract: | The rating capacity of high-voltage overhead line is mainly limited by the safety problems brought about by line sag. Based on the wire basic equation and conductor thermal balance equation, the theoretical calculating method of transmission line＇s sag was derived. With the consideration of climate factors, the line sag variation with the tidal current was accurately calculated. The research has great significance for the full utilization of high voltage transmission line＇s recessive capacity and safe operation at peak load and system N-1 running accident. |
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| Keywords: | line rating capacity conductor thermal balance equation line＇s recessive capacity |
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