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Lightning transient voltages in cables of a large industrial site using a FDTD thin wire model

机译:使用FDTD细线模型的大型工业现场电缆中的雷电瞬态电压

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The thin wire formalism of Holland-Simpson is used to model the different structures of a large industrial site in a FDTD volume. Extensions performed to the original formalism allow to shift the wire along the FDTD cell, to trace oblique trajectories, to model bare wires, insulated, and coaxial cables. The different types of thin wires are used to model: the lightning channel, the building, the grounding grid, a control cable and a cable route. Currents are computed along the shield and core of the control cable, and voltages are observed in its terminations. The results were compared with a MoM numerical tool, with good agreement and a significant better performance in terms of computational resources. Considerations on the modeling of two types of cable routes are addressed: a dielectric pipeline and a cable duct. Finally a simplified approach to compute the transient voltages in the ends of a coaxial cable is presented. (C) 2016 Elsevier B.V. All rights reserved.
机译:Holland-Simpson的细线形式用于在FDTD量中对大型工业站点的不同结构进行建模。对原始形式的扩展允许沿着FDTD单元移动电线,追踪斜线轨迹,对裸线,绝缘和同轴电缆建模。使用不同类型的细线来建模:雷电通道,建筑物,接地网,控制电缆和电缆线路。沿着控制电缆的屏蔽层和芯线计算电流,并在其端子中观察到电压。将结果与MoM数值工具进行了比较,在计算资源方面具有良好的一致性和明显更好的性能。解决了对两种类型的电缆路径建模的考虑:介电管线和电缆导管。最后,提出了一种简化的方法来计算同轴电缆两端的瞬态电压。 (C)2016 Elsevier B.V.保留所有权利。

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