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Grounding system models for electric current impulse

机译：电流脉冲接地系统模型

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摘要

In this paper, two electrical models that simulate grounding system responses to current impulses with inductive or capacitive characteristics are presented. The models were elaborated from the analysis of voltage current curves obtained from field tests. The characteristic curve of the relation between measured voltage and applied current (V x I) was used to identify the electric circuit model elements. In order to evaluate the proposed models, two grounding system configurations applied in electrical system and an additional configuration presented in the literature were used as case study. For each configuration, two models were evaluated: the proposed model and a literature model. The results of the proposed and literature model were evaluated and compared using calculated error statistics over time. The proposed model application resulted in values of total effective error lower than 5% in all analyzed cases, with equivalent error index values regarding the literature model and, in some cases, even smaller. The proposed model has more advantages in comparison to the literature model, since it has fewer and only linear elements. Due to the presentation of a simple and reliable configuration, the proposed circuits can be coupled, with greater ease and flexibility, to transient analysis programs and in insulation coordination studies.
机译：本文提出了两个电气模型，它们模拟了接地系统对具有感应或电容特性的电流脉冲的响应。通过对现场测试获得的电压电流曲线进行分析，对模型进行了详细阐述。测得的电压与施加的电流之间的关系的特性曲线（V x I）用于识别电路模型元素。为了评估提出的模型，将两个应用于电气系统的接地系统配置和文献中介绍的其他配置用作案例研究。对于每种配置，评估了两个模型：建议的模型和文献模型。所提出的模型和文献模型的结果经过评估，并使用计算出的误差统计数据进行了比较。所提出的模型应用程序导致在所有分析的情况下总有效误差值均低于5％，与文献模型有关​​的误差指数值相等，在某些情况下甚至更小。与文献模型相比，所提出的模型具有更多优势，因为它具有更少且只有线性元素。由于提供了一种简单而可靠的配置，因此所提出的电路可以更容易，更灵活地耦合到瞬态分析程序和绝缘配合研究中。

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