基于不同的参数设置研究雷击高塔地闪回击电磁辐射场特性

发布时间：2018-01-17 02:35

本文关键词：基于不同的参数设置研究雷击高塔地闪回击电磁辐射场特性　出处：《电瓷避雷器》2017年05期 　论文类型：期刊论文

【摘要】：高塔作为频受雷击的群体,研究其周围的雷电电磁环境有助于优化其附近的防雷设施,因此可以更好的对其周围的电力,电子和通讯设备进行雷电防护。利用TL模型推导出来的新的表达式来计算电场和磁场的大小,通过设置不同的参数,在雷击高塔和雷击地面这两种情况下,对不同水平距离处的电场和磁场值进行了分析和对比。得出了以下结论:在高塔存在的理想情况下,高塔近距离处的电场与地面处的电场相比是减小的,这表明高塔对近距离处的电场有屏蔽作用,而其磁场则与雷击地面的情况是相同的。随着[ρtop],[ρbot]值的改变,在不同水平距离处的观察点的电场和磁场的峰值大小也在改变,当它们的值减小时,高塔远区的电场和磁场的值都会存在一个增强效应,即存在一个远区增强因子。
[Abstract]:As the tower by lightning frequency group, lightning protection lightning electromagnetic environment around the help to optimize its nearby, so it can be better to the surrounding electrical, electronic and communications equipment for lightning protection. The new expression is derived by using the TL model to calculate the electric field and magnetic field, by setting different the parameters in the tower lightning and lightning ground under two conditions of different level at the distance of the electric and magnetic fields were analyzed and compared. Draw the following conclusions: in the ideal case the tower, the tower near the electric field and the ground is reduced compared to that with the tower the shielding effect on the electric field at near distance, and its magnetic field and lightning ground situation is the same as top]. [P, P [bot] value change, the peak at different levels at the distance of observation point of electric and magnetic field of large When the values are reduced, there is an enhancement effect in the field and magnetic field in the far region of the tower, that is, there is a far region enhancement factor.

【作者单位】：国网浙江象山县供电公司;国网宁波供电公司;
【分类号】：TM863
【正文快照】： 0引言直击雷闪击到高塔上会造成其物理结构上的损害,而感应雷造成的危害更大,感应雷所产生的电磁场会影响高塔中的通讯电力电子设备。尤其是现在很多高塔都是通讯塔,电磁场会对其进行干··扰,造成经济上的损失。但是作为高频率受雷击的高塔,国内对其受雷击时所表现出来的不同

【相似文献】