为了研究地形地貌对330 k V同塔双回输电线路最大绕击电流的影响,选取了三种典型的330 k V双回线路杆塔,利用电磁场数值分析和几何分析方法,分析了杆塔各导线间的相互屏蔽,拓展了电气几何模型EGM,计算了不同地形地貌下各相导线的最大绕击电流值Imax。分析得出同塔双回各导线的受屏蔽效果及地形地貌对最大绕击电流的影响。分析结果表明:对于鼓形塔,上相导线主要受地线和中相导线屏蔽;中相导线主要受地线和大地屏蔽;下相导线主要受中相导线和大地屏蔽。随着地面倾角的增大,地面对导线的屏蔽作用越强 ...
马欢 +4 more
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