向上负阶跃引线的电场特性

2015 International Symposium on Lightning Protection (XIII SIPDA) Pub Date : 2015-11-30 DOI:10.1109/SIPDA.2015.7339279

M. Azadifar, F. Rachidi, M. Rubinstein, M. Paolone, V. Rakov, D. Pavanello, S. Metz, C. Romero

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引用次数: 5

摘要

我们同时向Säntis塔报告垂直电场和与正闪光相关的电流的测量结果。这些田地是在距离塔14.7公里处测量的。所有数据都对应于2型正闪，其特征是电流具有相对缓慢的上升部分，在其上叠加振荡脉冲序列，推断是由于向上的负阶跃先导引起的。研究并分析了与向上负阶跃引线相关的双极电场和电流脉冲。发现初始半周期和后半周期的宽度相似。发现初始半周期的峰值平均约为后半周期峰值的两倍。在场峰和相关的电流峰之间发现了近似线性的相关关系。

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Characteristics of electric fields of upward negative stepped leaders

We report simultaneous measurements of vertical electric fields and currents associated with positive flashes to the Säntis tower. The fields were measured at a distance of 14.7 km from the tower. All the data correspond to type-2 positive flashes characterized by currents with relatively slow rising portion on which oscillatory pulse trains, inferred to be due to an upward negative stepped leader, are superimposed. Bipolar electric field and current pulses associated with the upward negative stepped leader are examined and analyzed. The widths of the initial and second half cycles are found to be similar. The peak of the initial half cycle is found to be, on average, about twice as high as the peak of the second half cycle. A nearly linear correlation is found between the field peaks and associated current peaks.

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来源期刊

2015 International Symposium on Lightning Protection (XIII SIPDA)

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