Effect of earthing enhancing compound (EEC) on improving tower footing resistance of a 500 kV tower in a rocky area

This paper presents a comparative analysis of different earthing designs’ performances, with particular interest on the use of earthing enhancing compound (EEC) for a selected earthing design of 500 kV transmission towers in a rocky soil, using the SESCAD tool of the Current distribu-tion, electroma...

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Published in:Applied Sciences (Switzerland)
Main Author: Nasir N.A.F.M.; 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
Language:English
Published: MDPI AG 2021
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108884812&doi=10.3390%2fapp11125623&partnerID=40&md5=72362cddcec68bd5ce28c784301fa117
id 2-s2.0-85108884812
spelling 2-s2.0-85108884812
Nasir N.A.F.M.; 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.
Effect of earthing enhancing compound (EEC) on improving tower footing resistance of a 500 kV tower in a rocky area
2021
Applied Sciences (Switzerland)
11
12
10.3390/app11125623
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108884812&doi=10.3390%2fapp11125623&partnerID=40&md5=72362cddcec68bd5ce28c784301fa117
This paper presents a comparative analysis of different earthing designs’ performances, with particular interest on the use of earthing enhancing compound (EEC) for a selected earthing design of 500 kV transmission towers in a rocky soil, using the SESCAD tool of the Current distribu-tion, electromagnetic field grounding and soil structure analysis (CDEGS) software. The simulation included the interpretation of soil profile and comparison between designs A, B and C, which are currently used for the 500 kV tower footing resistance (TFR) improvement. Results showed each design had reduced the TFR by 66%, 54.7% and 63.2% for the towers T42, T48 and T50, respectively. In some cases, further improvement of TFR is required, especially in the rocky area where the soil resistivity (SR) value is of more than 500 Ω·m. In this case, EEC was used in Design C, encasing both the vertical and horizontal electrodes, and it reduced the TFR further by 16% to 20%. The characteristics of the soil and earthing arrangement design play an important role in achieving a low TFR value, which is directly proportional to the backflashover occurrence and thus to the transmission line performance. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
MDPI AG
20763417
English
Article
All Open Access; Gold Open Access; Green Open Access
author Nasir N.A.F.M.; 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 Nasir N.A.F.M.; 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.
Effect of earthing enhancing compound (EEC) on improving tower footing resistance of a 500 kV tower in a rocky area
author_facet Nasir N.A.F.M.; 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.
author_sort Nasir N.A.F.M.; 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.
title Effect of earthing enhancing compound (EEC) on improving tower footing resistance of a 500 kV tower in a rocky area
title_short Effect of earthing enhancing compound (EEC) on improving tower footing resistance of a 500 kV tower in a rocky area
title_full Effect of earthing enhancing compound (EEC) on improving tower footing resistance of a 500 kV tower in a rocky area
title_fullStr Effect of earthing enhancing compound (EEC) on improving tower footing resistance of a 500 kV tower in a rocky area
title_full_unstemmed Effect of earthing enhancing compound (EEC) on improving tower footing resistance of a 500 kV tower in a rocky area
title_sort Effect of earthing enhancing compound (EEC) on improving tower footing resistance of a 500 kV tower in a rocky area
publishDate 2021
container_title Applied Sciences (Switzerland)
container_volume 11
container_issue 12
doi_str_mv 10.3390/app11125623
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108884812&doi=10.3390%2fapp11125623&partnerID=40&md5=72362cddcec68bd5ce28c784301fa117
description This paper presents a comparative analysis of different earthing designs’ performances, with particular interest on the use of earthing enhancing compound (EEC) for a selected earthing design of 500 kV transmission towers in a rocky soil, using the SESCAD tool of the Current distribu-tion, electromagnetic field grounding and soil structure analysis (CDEGS) software. The simulation included the interpretation of soil profile and comparison between designs A, B and C, which are currently used for the 500 kV tower footing resistance (TFR) improvement. Results showed each design had reduced the TFR by 66%, 54.7% and 63.2% for the towers T42, T48 and T50, respectively. In some cases, further improvement of TFR is required, especially in the rocky area where the soil resistivity (SR) value is of more than 500 Ω·m. In this case, EEC was used in Design C, encasing both the vertical and horizontal electrodes, and it reduced the TFR further by 16% to 20%. The characteristics of the soil and earthing arrangement design play an important role in achieving a low TFR value, which is directly proportional to the backflashover occurrence and thus to the transmission line performance. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
publisher MDPI AG
issn 20763417
language English
format Article
accesstype All Open Access; Gold Open Access; Green Open Access
record_format scopus
collection Scopus
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