基于核密度估计的输电线路走廊杆塔-地闪复合密度统计方法

发布时间：2018-01-10 13:38

本文关键词：基于核密度估计的输电线路走廊杆塔-地闪复合密度统计方法　出处：《高电压技术》2017年05期 　论文类型：期刊论文

【摘要】：近年来由于我国土地资源紧缺,多回线路共用输电线路走廊十分普遍,线路走廊覆盖面积与雷电活动范围相比很有限,且走廊内杆塔密度不一,因此存在如何衡量地闪活动对线路走廊影响的问题。用核密度估计方法对百色地区输电线路走廊地闪密度和雷害密度进行了统计,并结合相关系数的计算,交叉校验得到地闪密度、雷害密度、线路杆塔密度等参数之间的相关性。通过对比分析,得到雷害密度与"地闪密度和线路杆塔复合密度"的相关性最高,为0.85,而此前常用来评价雷电活动的地闪密度和雷害密度之间的相关系数仅为0.51。由此提出"地闪线路杆塔复合密度"的概念,该密度可有效地衡量输电线路走廊内的雷害分布,有助于区域化防雷的进行。
[Abstract]:In recent years, due to the shortage of land resources in China, the multi-circuit common transmission line corridor is very common, the coverage area of the corridor is very limited compared with the lightning activity range, and the density of the tower in the corridor is different. Therefore, there is a problem of how to measure the influence of ground lightning activity on the line corridor. The lightning density and lightning density of Baise transmission line corridor are calculated by using the nuclear density estimation method, and the correlation coefficient is calculated. The correlation between ground lightning density, lightning damage density and line tower density is obtained by cross-check, and the correlation between lightning damage density and "ground lightning density and line tower composite density" is the highest through comparison and analysis. It is 0.85, and the correlation coefficient between lightning lightning density and lightning lightning density is only 0.51.Therefore, the concept of "composite density of tower of ground lightning line" is put forward. This density can effectively measure the distribution of lightning damage in the transmission line corridor and is helpful to the regional lightning protection.
【作者单位】：武汉大学电气工程学院;中信建筑设计研究总院有限公司;国网湖北省电力公司襄阳供电公司;
【基金】：国家自然科学基金青年基金(51307125)~~
【分类号】：TM75;TM863
【正文快照】： 0引言1据国家电网公司2012年架空输电线路运行报告统计,2006—2012年,110 k V及以上总长651 819km线路的跳闸故障中,雷击跳闸平均占总故障数的47.6%,因此雷电活动是影响电网安全稳定的重要因素之一[1]。近年来,我国输电工程建设用地日趋饱和,架空线路走廊资源日益减少,共用

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