高耸建筑群对附近10kV架空线路雷击跳闸率的影响
Water Resources and Power(2013)
Abstract
针对高耸建筑群的存在会降低周边10kV架空线路雷击跳闸率的问题,根据线路雷击跳闸率的计算公式分析了建筑物的存在对附近10kV架空线路雷击跳闸率的影响,并结合电气几何模型的击距理论分析了引入高耸建筑物后导线暴露弧与大地暴露弧交点的变化及建筑物相对介电常数、高度、距离、面积对雷电先导阶段导线附近电场、感应过电压和感应雷跳闸率变化的影响,为城区10kV架空线路防雷水平的评估提供一条新途径。
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Key words
lightning struck width,calculation of distribution lines lightning flash-over rate,induced lightning,direct lightning,shielding,high-rise structures
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