The Monte Carlo method (MCM) is the most widely used statistical approach to evaluate the lightning performance (LP) of overhead transmission lines (OTLs). However, the MCM has a very high computational burden, making LP studies time consuming. To overcome this difficulty, this letter proposes a new alternative approach for calculating the the lightning overvoltages (LOs) using the unscented transform method (UTM). This letter compares the UTM and MCM for calculating LO in insulator strings of OTLs through extensive tests carried out using the Alternative Transients Program (ATP). Such LO evaluation is an essential requirement for LP evaluation of a transmission line. The results indicate that the UTM significantly reduces the processing time to generate LOs while its accuracy is similar to that of the MCM.

中文翻译：

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使用无迹变换评估架空输电线路的雷电过电压

蒙特卡洛方法 (MCM) 是用于评估架空输电线路 (OTL) 闪电性能 (LP) 的最广泛使用的统计方法。然而，MCM 具有非常高的计算负担，使得 LP 研究非常耗时。为了克服这一困难，这封信提出了一种使用无迹变换方法 (UTM) 计算雷电过电压 (LO) 的新替代方法。这封信通过使用替代瞬态程序 (ATP) 进行的大量测试，比较了 UTM 和 MCM 在 OTL 的绝缘子串中计算 LO。这种 LO 评估是传输线 LP 评估的基本要求。结果表明，UTM 显着减少了生成 LO 的处理时间，而其准确性与 MCM 相似。