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Influence of Pulse Interval on Soil Dispersion Characteristics under Continuous ImpulseCAO, W.   , DU, S. , SHEN, W. , MIAO, H. , FAN, Y. |
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Author keywords
continuous impulse current, impulse grounding resistance, lightning protection, pulse interval, vertical grounding electrodes.
References keywords
soil(13), lightning(12), impulse(10), power(8), characteristics(8), delivery(7), zeng(5), ionization(5), chen(5), performance(4)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2024-08-31
Volume 24, Issue 3, Year 2024, On page(s): 57 - 68
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2024.03006
Web of Science Accession Number: 001306111400006
SCOPUS ID: 85203008225
Abstract
Under continuous lightning strikes, the impulse dispersion characteristics of grounding devices more effectively indicate the effectiveness of tower grounding for lightning protection. These characteristics exhibit distinct behaviors under different lightning current pulse intervals. To investigate these characteristics, the present study employed ATP-EMTP simulation software to develop a dual-pulse model that accounted for the time-varying properties of soil and spark effects. The combined simulation and experimental approach was used to examine, the continuous impulse characteristics of grounding devices. The results reveal that the impulse characteristics under continuous strikes are significantly different from those under single strikes, primarily due to variations in the soil environment surrounding the grounding devices. The spark and recovery effects exert different impacts on soil impulse dispersion performance. Shorter pulse intervals lead to a superposition of first and second impulse currents, which increases current amplitude and spark effect, temporarily reducing soil resistivity and making the recovery effect of soil less pronounced. This results in lower impulse grounding resistance compared to longer intervals. Furthermore, with the increase in soil resistivity, the ratio of the second to the first impulse grounding resistance decreases, indicating that soil resistivity also influences the intensity of the spark effect on soil. |
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
All rights reserved: Advances in Electrical and Computer Engineering is a registered trademark of the Stefan cel Mare University of Suceava. No part of this publication may be reproduced, stored in a retrieval system, photocopied, recorded or archived, without the written permission from the Editor. When authors submit their papers for publication, they agree that the copyright for their article be transferred to the Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania, if and only if the articles are accepted for publication. The copyright covers the exclusive rights to reproduce and distribute the article, including reprints and translations.
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
All rights reserved: Advances in Electrical and Computer Engineering is a registered trademark of the Stefan cel Mare University of Suceava. No part of this publication may be reproduced, stored in a retrieval system, photocopied, recorded or archived, without the written permission from the Editor. When authors submit their papers for publication, they agree that the copyright for their article be transferred to the Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania, if and only if the articles are accepted for publication. The copyright covers the exclusive rights to reproduce and distribute the article, including reprints and translations.
Permission for other use: The copyright owner's consent does not extend to copying for general distribution, for promotion, for creating new works, or for resale. Specific written permission must be obtained from the Editor for such copying. Direct linking to files hosted on this website is strictly prohibited.
Disclaimer: Whilst every effort is made by the publishers and editorial board to see that no inaccurate or misleading data, opinions or statements appear in this journal, they wish to make it clear that all information and opinions formulated in the articles, as well as linguistic accuracy, are the sole responsibility of the author.
