NDLI: Behaviour of grounding systems excited by high impulse currents: the model and its validation

Content Provider	IEEE Xplore Digital Library
Author	Geri, A.
Copyright Year	1986
Abstract	The behaviour of grounding systems excited by high impulse currents (such as lightning strokes or phase to ground faults) considerably differs from that at low-frequency and at low-current: inductive behaviour can become more and more important with respect to resistive behaviour and, in addition, these currents can generate soil breakdown (which makes the impulse response typically nonlinear). Many experimental tests confirm these aspects. In order to obtain a correct design of electrical systems, with respect to the protection of installations against anomalous events, it is fundamental to predict the impulse characteristics of grounding systems. An efficient solution to this problem may be obtained by a mathematical model based on a circuit approach. The development of this model (which is able to simulate complex grounding systems when nonlinear ionization phenomena take place) is described in this paper. The model has been validated by comparing the numerical results both with experimental tests and with the simulations executed by various approaches.
Sponsorship	IEEE Power Engineering Society
Starting Page	1008
Ending Page	1017
Page Count	10
File Size	897179
File Format	PDF
ISSN	08858977
Volume Number	14
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Grounding Circuit simulation Lightning Circuit faults Soil Electric breakdown Testing Protection Mathematical model Ionization
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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Lightning Impulse Breakdown Characteristics of Frozen Soil

Progress in Lightning Impulse Characteristics of Grounding Electrodes With Soil Ionization

Determination of threshold electric field E/sub C/ of soil under high impulse currents

Extension of dynamic model of impulse behavior of concentrated grounds at high currents

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Transient analysis of the active surge protection gap trigger process with lightning voltage impulse injection

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Behaviour of grounding systems excited by high impulse currents: the model and its validation

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