国内外架空输电导线稳态载流量计算方法研究

Wenxun LIU,Weiguang TIAN,Fang LIN,Rongjian CUI

Jilin Electric Power（2020）

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Abstract

针对作为导线选择的重要依据的导线载流量,计算并对比分析了国外两种标准CIGRE WG B2.43 Guidefor Thermal Rating Calculation of Overhead Lines和IEEE Std 738-2006 IEEE Standard for Calculation theCurrent-Temperature Relationship of Bare Overhead Conductors,从原理、对流热损失功率、辐射散热功率、交流电阻值等5方面对比分析了导线载流量计算方式,并将国家标准GB 50545-2010《110 kV～750 kV架空输电线路设计规范》与前两种国外标准对比,得出国家标准比IEEE高0.56％～1.02％,比CIGRE高11.61％～15.13％.

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