Abstract：Probability of lightning current amplitude is a necessary parameter to characterize frequency of lightning activity and calculate lightning flashover rate. Measured value and regulation method about probability of lightning current amplitude are compared by cumulative probability function and probability density function. Great difference between them is revealed, and it increases with the decrease of lightning current amplitude. Through comparing measured value and IEEE Std recommend formula and other similar formula, it is found that the same change tendency existed in both above formula and measured value. But large difference existed in amplitude of them. Formula about probability of lightning current amplitude is fit based on IEEE Std recommend formula and other similar formula. The effect of coefficients on the formula on curves is analyzed and value range of coefficients is given. Then advice is given about recommended value in project. Finally, the formula is verified by measured value in other place.
李瑞芳, 吴广宁, 曹晓斌, 马御棠, 刘平, 苏杰. 雷电流幅值概率计算公式[J]. 电工技术学报, 2011, 26(4): 161-167.
Li Ruifang, Wu Guangning, Cao Xiaobin, Ma Yutang, Liu Ping, Su Jie. Formula for Probability of Lightning Current Amplitude. Transactions of China Electrotechnical Society, 2011, 26(4): 161-167.
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2011, Vol. 26 
