接地网的时域有限差分暂态分析,两种不同细线模型的比较

L. Diaz, C. Miry, A. Reineix, C. Guiffaut, A. Tatematsu
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引用次数: 3

摘要

提出了一种用于时域有限差分仿真的细线模型,用于研究接地网中的瞬态电位上升和电流。该模型是荷兰形式主义的延伸,并与Baba、Nagaoka和Ametani的细线模型进行了比较,使用了先前通过测量验证的案例研究。对导体表面附近电势的计算特别感兴趣。为此,在野田和横山前人工作的基础上,提出了一个近似公式。从暂态电位上升和接地网电流的角度对结果进行了比较。这些比较是很一致的。
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FDTD transient analysis of grounding grids a comparison of two different thin wire models
A thin wire model for FDTD simulations is proposed for the study of transient potential rises and currents in a grounding grid. The model is an extension of the formalism of Holland, and it is compared with the thin wire model of Baba, Nagaoka, and Ametani, using a case study previously validated with measurements. Special interest is drawn on the computation of the potential close to the surface of conductors. To do so, an approximated formula based on the previous work of Noda and Yokoyama is proposed. The results are compared in terms of transient potential rises and currents in a grounding grid. The comparisons are in good agreement.
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