基于核密度估计的输电线路走廊雷害分析

来源 :中国电机工程学会高电压专业委员会2015年学术年会 | 被引量 : 0次 | 上传用户:rafezyp
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近年来由于我国土地资源紧缺,共用输电线路走廊的工程十分普遍,线路走廊覆盖面积与雷电活动范围相比十分有限、且走廊内杆塔密度不一,因此如何衡量地闪活动对线路走廊的影响是一个值得研究的问题.本文使用核密度估计方法,对输电线路走廊杆塔密度、雷害密度进行了统计,提出“地闪—线路杆塔复合密度”参数;使输电线路走廊地闪密度与雷害密度的相关系数由0.51提升到0.85,证明了在给定区域内地闪密度与平均雷害数量正线性相关;说明雷害分布密度不仅与地闪密度有关,与输电线路杆塔密度相关性也很大;基于核密度估计的输电线路走廊雷害统计方法在电网区域化防雷评估中具有实用价值.
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