雷电流幅值概率计算公式

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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.

Key words： Accumulative probability probability density regulation method IEEE Std

Received: 02 June 2009 Published: 07 March 2014

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TM86

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	Articles by authors
	Li Ruifang
	Wu Guangning
	Cao Xiaobin
	Ma Yutang
	Liu Ping
	Su Jie

Cite this article:

Li Ruifang,Wu Guangning,Cao Xiaobin等. Formula for Probability of Lightning Current Amplitude[J]. Transactions of China Electrotechnical Society, 2011, 26(4): 161-167.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I4/161

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