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Three-Dimensional Calculation Method on Shielding Failure Rate of Transmission Lines
Author(s): 
Pages: 134-138
Year: Issue:  10
Journal: Transactions of China Electrotechnical Society

Keyword:  绕击率档距三维评估;
Abstract: 绕击率是计算输电线路耐雷水平的重要参数,传统计算方法以导地线平均高度估算线路的绕击率,存在一定的误差,难以反映线路绕击的真实情况.本文对传统方法进行改进,得出基于三维曲面的输电线路雷电绕击率的计算方法.该方法以导线的高度为变量,给出了绕击率随垂直于线路的截面与杆塔间距离的变化规律及计算式,通过将该计算式沿线路档距方向进行积分,得出单个档距三维模型的雷电绕击率计算式.本文的分析基于电气几何模型,但该...
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