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首页> 外文期刊>Electric power systems research >Laplace transform inversion through the theta algorithm for power-system EMT analysis
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Laplace transform inversion through the theta algorithm for power-system EMT analysis

机译:LAPLACE通过THETA算法进行动力系统EMT分析的转换

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Laplace transform analysis of electromagnetic power system transients generally is based on a technique in which the Laplace inversion integral is truncated with a suitable data window. This technique, being referred to as WNLT, is appropriate for most practical cases. Nevertheless, it results inadequate for certain R&D tasks. This paper presents a new technique for numerical Laplace inversion that does not require truncation with a data window; it instead uses Brezinski's theta algorithm to account for the infinite range of the Laplace inversion integral. As opposed to the WNLT, the new technique guarantees consistent and high accuracy levels at low computational costs. Finally, the new technique is applied to the transient analysis of a power-system network. Its results compare favorably well with those from the PSCAD/EMTDC program.
机译:电磁电力系统的LAPLACE变换分析通常基于这样的技术,其中LAPLACE反演积分被截断为合适的数据窗口。 这种技术被称为Wnlt,适用于大多数实际情况。 尽管如此,对于某些研发任务,它会产生不足。 本文为数字拉普拉斯逆转的新技术,不需要使用数据窗口截断; 它相反,使用Brezinski的THETA算法来解释LAPLACE反演积分的无限范围。 与WNLT相反,新技术以低计算成本保证一致和高精度水平。 最后,新技术应用于电力系统网络的瞬态分析。 它的结果与来自PSCAD / EMTDC计划的结果相比很好。

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