Staff View: Influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kV lines

Influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kV lines

Electromagnetic fields; Lightning; Outages; Soils; Systems analysis; Towers; 500 kV transmission lines; Earthing system designs; High frequency operation; Lightning current parameters; Lightning performance; Low and high frequencies; Soil-structure analysis; Sustainable operations; Electric groundin...

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Main Authors:	Mohamad Nasir N.A.F., Ab Kadir M.Z.A., Osman M., Abd Rahman M.S., Ungku Amirulddin U.A., Mohd Nasir M.S., Zaini N.H., Nik Ali N.H.
Other Authors:	57218250731
Format:	Article
Published:	MDPI AG 2023
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id	my.uniten.dspace-26052
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spelling	my.uniten.dspace-260522023-05-29T17:06:22Z Influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kV lines Mohamad Nasir N.A.F. Ab Kadir M.Z.A. Osman M. Abd Rahman M.S. Ungku Amirulddin U.A. Mohd Nasir M.S. Zaini N.H. Nik Ali N.H. 57218250731 25947297000 7201930315 36609854400 26422804600 57196689134 55865700900 57196922007 Electromagnetic fields; Lightning; Outages; Soils; Systems analysis; Towers; 500 kV transmission lines; Earthing system designs; High frequency operation; Lightning current parameters; Lightning performance; Low and high frequencies; Soil-structure analysis; Sustainable operations; Electric grounding This paper presents an optimum earthing system design for improving the lightning performance of a 500 kV transmission line for its sustainable operation. The study includes an interpretation of the soil profile and compares the results between default and new earthing arrangements for improving tower footing resistance and tower footing impedance. An evaluation of the tower footing resistance (TFR) and impedance (Ri) before and after earthing improvement was carried out. Moreover, the effects of TFR and Ri, also known as low and high?frequency earthing, respectively, based on a specification of TFR and soil resistivity (SR) ranges at various sites were also considered. The analysis was carried out using the SESCAD tool of Current Distribution Electromagnetic Field Grounding and Soil Structure Analysis software (CDEGS) and PSCAD/EMTDC software for low and high frequency earthing, respectively. From the analysis, the results showed that the new earthing arrangement reduced the TFR by 74.11% for Tower T40, 75.71% for Tower T41 and 80.83% for Tower T42. For Ri, the results also demonstrated that the values were significantly decreased below the TFR during a high frequency operation due to the soil ionisation phenomenon that took place during the lightning. All these improvements are now being investigated and studied in all 500 kV networks in Malaysia, where lightning is considered as a major threat in relation to power outages. � 2021 by the author. Licensee MDPI, Basel, Switzerland. Final 2023-05-29T09:06:22Z 2023-05-29T09:06:22Z 2021 Article 10.3390/en14164736 2-s2.0-85112047505 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112047505&doi=10.3390%2fen14164736&partnerID=40&md5=65176a031c54dd34f12c5c63dd75ea6b https://irepository.uniten.edu.my/handle/123456789/26052 14 16 4736 All Open Access, Gold MDPI AG Scopus
institution	Universiti Tenaga Nasional
building	UNITEN Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Tenaga Nasional
content_source	UNITEN Institutional Repository
url_provider	http://dspace.uniten.edu.my/
description	Electromagnetic fields; Lightning; Outages; Soils; Systems analysis; Towers; 500 kV transmission lines; Earthing system designs; High frequency operation; Lightning current parameters; Lightning performance; Low and high frequencies; Soil-structure analysis; Sustainable operations; Electric grounding
author2	57218250731
author_facet	57218250731 Mohamad Nasir N.A.F. Ab Kadir M.Z.A. Osman M. Abd Rahman M.S. Ungku Amirulddin U.A. Mohd Nasir M.S. Zaini N.H. Nik Ali N.H.
format	Article
author	Mohamad Nasir N.A.F. Ab Kadir M.Z.A. Osman M. Abd Rahman M.S. Ungku Amirulddin U.A. Mohd Nasir M.S. Zaini N.H. Nik Ali N.H.
spellingShingle	Mohamad Nasir N.A.F. Ab Kadir M.Z.A. Osman M. Abd Rahman M.S. Ungku Amirulddin U.A. Mohd Nasir M.S. Zaini N.H. Nik Ali N.H. Influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kV lines
author_sort	Mohamad Nasir N.A.F.
title	Influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kV lines
title_short	Influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kV lines
title_full	Influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kV lines
title_fullStr	Influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kV lines
title_full_unstemmed	Influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kV lines
title_sort	influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kv lines
publisher	MDPI AG
publishDate	2023
_version_	1806428008218624000
score	13.188404

Influence of lightning current parameters and earthing system designs on tower footing impedance of 500 kV lines

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