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Grounding electrodes and grounding devices. Regulatory requirements
Автоматика, связь, информатикаОдной из основных проблем при проектировании заземляющих устройств (ЗУ) в грунтах с высоким удельным сопротивлением является создание низкоомного заземляющего устройства. В последнее время широкое распространение получили так называемые активные (химические) заземляющие электроды, обеспечивающие искусственное снижение удельного сопротивления грунта в ...
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Transient Ground Impedances According to Shapes of Grounding Electrodes
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers, 2006This paper presents the transient behaviors of grounding system impedance against lightning impulse currents. The dynamic characteristics of the deeply driven ground rod and grounding grid subjected to the impulse current were investigated. The transient ground impedance strongly depends on the configuration and size of grounding electrodes and the ...
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Calculation of Impulse Grounding Resistance of Extended Grounding Electrode
2013In order to calculate the impulse grounding resistance of extended grounding electrode accurately, this paper introduces a method for computing the impulse grounding resistance based on the spark discharge characteristic of the earth, using a nonlinear differential circuit model. The relation curves of impulse grounding resistance with the current peak
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A message from the ground electrode
Muscle & Nerve, 2016Lawrence R, Robinson +2 more
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A Comparison of Concrete Encased Grounding Electrodes to Driven Ground Rods
IEEE Transactions on Industry and General Applications, 1970An experimental study was made to compare the efficacy of concrete encased grounding electrodes to that of driven ground rods for grounding residential and small commercial electric services. This study extended over 14 months and included a very wet winter and a dry summer.
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A Method for Grounding Resistance Calculation of the Vertical Grounding Electrode
SSRN Electronic Journal, 2022Hye yong Kwon +2 more
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Analysis of Grounding Electrode Input Impedance Calculation
2011The paper deals with an assessment of transient impedance of the grounding electrode. The mathematical model is based on the thin wire antenna theory and related Pocklington integro- differential equation in the frequency domain, which is numerically treated via Galerkin-Bubnov variant of indirect Boundary Element Method (GB- IBEM).
Poljak, Dragan, Čavka, Damir
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Transient thermal behaviour of ground electrodes part I: Spherical electrodes
Journal of Engineering Mathematics, 1968Berg, G. J., Herron, A. G.
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