Secondly, a simulation procedure is proposed to calculate the failure probability of the line arrester by considering the random parameters, i.e., the wave-tail and crest value of the lightning surge.

• 其次，建立雷击电流波尾时间及峰值累积机率分布，并考虑累积机率分布下不同的参数值，进而以本研究所提出的模拟程序，计算线路用避雷器之故障率。