A hybrid frequency-time domain methodology for the modeling of grounding systems

机译：用于接地系统建模的混合频时域方法

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摘要

This paper presents a numerical modeling, combined the finite element method in frequency domain with the finite difference time domain, to calculate the transient impulse characteristic of grounding systems including the ionization phenomenon. In this numerical method, space-time variable soil resistivity is used to simulate the soil ionization phenomenon and no a priori hypothesis on the geometrical shape of the ionized region around the electrodes is necessary. The proposed numerical scheme is validated by comparing computed results with experimental results in literature.

机译：本文提出了一种数值模型，将频域中的有限元方法与时域有限差分相结合，以计算包括电离现象的接地系统的瞬态脉冲特性。在这种数值方法中，使用时空可变土壤电阻率来模拟土壤电离现象，不需要先验假设电极周围电离区域的几何形状。通过将计算结果与文献中的实验结果进行比较，验证了所提出的数值方案。

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来源
《2014 Intemational Conference of Lighbling Protection》|2014年|202-204|共3页
会议地点 Shanghai(CN)
作者
Li Jingli; Qi Ge; Qiao Zhiyuan; Zhang Lingjuan;
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作者单位

Coll. of Electr. Eng., Zhengzhou Univ., Zhengzhou, China;

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原文格式 PDF
正文语种 eng
中图分类
关键词
earthing; finite difference time-domain analysis; finite element analysis; power system transients; soil; electrodes; finite difference time domain method; finite element method; geometrical shape; grounding system modelling; hybrid frequency-time domain methodology; soil ionization phenomenon; space-time variable soil resistivity; transient impulse characteristic; Computational modeling; Current density; Equations; Finite element analysis; Mathematical model; Numerical models; finite element methods; grounding; impu;

机译：接地;时域有限差分分析;有限元分析;电力系统暂态;土壤;电极;时域有限差分法;有限元方法;几何形状;接地系统建模;频时域混合方法;土壤电离现象;空间时变土壤电阻率；瞬态脉冲特性；计算模型；电流密度；方程；有限元分析；数学模型；数值模型；有限元法；接地；冲击波;

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2. Comments on “Time-Domain Modeling of Grounding Systems’ Impulse Response Incorporating Nonlinear and Frequency-Dependent Aspects” [J] . Mohammadpur Sahar, Moradi Mohamad IEEE Transactions on Electromagnetic Compatibility . 2020,第1期

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3. Time-Domain Modeling of Tower-Footing Grounding Systems Based on Impedance Matrix [J] . Gholinezhad Javad, Shariatinasab Reza IEEE Transactions on Power Delivery . 2019,第3期

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4. A hybrid frequency-time domain methodology for the modeling of grounding systems [C] . Li Jingli, Qi Ge, Qiao Zhiyuan, Intemational Conference of Lighbling Protection . 2014

机译：用于接地系统建模的混合频率 - 时域方法
5. Development of a methodology for hybrid metamodeling of hierarchical manufacturing systems within a simulation framework. [D] . Pratt, David Bruce. 1992

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6. A decoupled circuital model methodology for calculating DC currents in AC grids induced by HVDC grounding current [O] . Lingyu Zhu, Chenzhao Fu, Hao Liu, 2012

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7. Solution of nonlinear dynamic structural systems by a hybrid frequency-time domain approach [O] . Kawamoto James Daniel 1983

机译：用混合频率 - 时域方法求解非线性动力结构系统

A hybrid frequency-time domain methodology for the modeling of grounding systems

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