Impact of Lightning on Tower Footing Design of 500 kV Transmission Line
This study evaluates several tower earthing designs for improving 500 kV transmission line's lightning performance and ensure its continuous operation. The study includes the assessment of the soil profile and a comparison of the findings obtained using the default and new earthing arrangement,...
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Institute of Electrical and Electronics Engineers Inc.
2024
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| author | Mohd Nasir N.A.F. Mohd Nasir M.S. Rahman M.S.A. Ab-Kadir M.Z.A. Azis N. Osman M. Amirulddin U.A.U. |
| author2 | 57190943327 |
| author_facet | 57190943327 Mohd Nasir N.A.F. Mohd Nasir M.S. Rahman M.S.A. Ab-Kadir M.Z.A. Azis N. Osman M. Amirulddin U.A.U. |
| author_sort | Mohd Nasir N.A.F. |
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| content_provider | Universiti Tenaga Nasional |
| content_source | UNITEN Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | This study evaluates several tower earthing designs for improving 500 kV transmission line's lightning performance and ensure its continuous operation. The study includes the assessment of the soil profile and a comparison of the findings obtained using the default and new earthing arrangement, both of which are intended to improve the tower footing resistance (TFR-during steady-state) and tower footing impedance (TFI-during lightning). Assessment of the TFR and TFI has been performed before and after the earthing design improvement. In addition, the impacts of these TFR and TFI, which are also defined as low and high-frequency earthing, respectively, relying on a specification of TFR and soil resistivity (SR) ranges at different locations have also been taken into consideration. The study was performed with the help of the SESCAD tool of Current Distribution Electromagnetic Field Grounding and Soil Structure Analysis program (CDEGS), as well as the PSCAD/EMTDC software, which was used for low and high frequency earthing, accordingly. Upon the completion of the investigation, the findings revealed that the modification to the earthing arrangement had a beneficial effect on lowering the TFR by 84.29 % and 88.34 % for Towers T41 and T42, respectively. While for TFI, the results revealed a significant decrease below the TFR during high frequency operation, which was attributed to soil ionization process that occur due to lightning. This was proved by the fact that the values were significantly below the TFR. All these enhancements are now being explored and evaluated across all of Malaysia's 500 kV networks, where lightning is regarded to be the primary risk factor for power outages. � 2023 IEEE. |
| format | Conference Paper |
| id | my.uniten.dspace-34543 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2024 |
| publisher | Institute of Electrical and Electronics Engineers Inc. |
| record_format | dspace |
| spelling | my.uniten.dspace-345432024-10-14T11:20:32Z Impact of Lightning on Tower Footing Design of 500 kV Transmission Line Mohd Nasir N.A.F. Mohd Nasir M.S. Rahman M.S.A. Ab-Kadir M.Z.A. Azis N. Osman M. Amirulddin U.A.U. 57190943327 57196689134 58811982000 25947297000 56120698200 7201930315 26422804600 CDEGS earthing design lightning PSCAD soil ionisation tower footing impedance (TFI) tower footing resistance (TFR) transmission line Electric grounding Electric power transmission Electric power transmission networks Electromagnetic fields Ionization Lightning Soils Towers CDEGS Earthing design Footing resistance PSCAD Soil ionization Tower footing impedance Tower footing resistance Tower footings Transmission-line Electric lines This study evaluates several tower earthing designs for improving 500 kV transmission line's lightning performance and ensure its continuous operation. The study includes the assessment of the soil profile and a comparison of the findings obtained using the default and new earthing arrangement, both of which are intended to improve the tower footing resistance (TFR-during steady-state) and tower footing impedance (TFI-during lightning). Assessment of the TFR and TFI has been performed before and after the earthing design improvement. In addition, the impacts of these TFR and TFI, which are also defined as low and high-frequency earthing, respectively, relying on a specification of TFR and soil resistivity (SR) ranges at different locations have also been taken into consideration. The study was performed with the help of the SESCAD tool of Current Distribution Electromagnetic Field Grounding and Soil Structure Analysis program (CDEGS), as well as the PSCAD/EMTDC software, which was used for low and high frequency earthing, accordingly. Upon the completion of the investigation, the findings revealed that the modification to the earthing arrangement had a beneficial effect on lowering the TFR by 84.29 % and 88.34 % for Towers T41 and T42, respectively. While for TFI, the results revealed a significant decrease below the TFR during high frequency operation, which was attributed to soil ionization process that occur due to lightning. This was proved by the fact that the values were significantly below the TFR. All these enhancements are now being explored and evaluated across all of Malaysia's 500 kV networks, where lightning is regarded to be the primary risk factor for power outages. � 2023 IEEE. Final 2024-10-14T03:20:32Z 2024-10-14T03:20:32Z 2023 Conference Paper 10.1109/APL57308.2023.10181321 2-s2.0-85166732467 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85166732467&doi=10.1109%2fAPL57308.2023.10181321&partnerID=40&md5=fe316c0abdef576e91eed3c19631db13 https://irepository.uniten.edu.my/handle/123456789/34543 Institute of Electrical and Electronics Engineers Inc. Scopus |
| spellingShingle | CDEGS earthing design lightning PSCAD soil ionisation tower footing impedance (TFI) tower footing resistance (TFR) transmission line Electric grounding Electric power transmission Electric power transmission networks Electromagnetic fields Ionization Lightning Soils Towers CDEGS Earthing design Footing resistance PSCAD Soil ionization Tower footing impedance Tower footing resistance Tower footings Transmission-line Electric lines Mohd Nasir N.A.F. Mohd Nasir M.S. Rahman M.S.A. Ab-Kadir M.Z.A. Azis N. Osman M. Amirulddin U.A.U. Impact of Lightning on Tower Footing Design of 500 kV Transmission Line |
| title | Impact of Lightning on Tower Footing Design of 500 kV Transmission Line |
| title_full | Impact of Lightning on Tower Footing Design of 500 kV Transmission Line |
| title_fullStr | Impact of Lightning on Tower Footing Design of 500 kV Transmission Line |
| title_full_unstemmed | Impact of Lightning on Tower Footing Design of 500 kV Transmission Line |
| title_short | Impact of Lightning on Tower Footing Design of 500 kV Transmission Line |
| title_sort | impact of lightning on tower footing design of 500 kv transmission line |
| topic | CDEGS earthing design lightning PSCAD soil ionisation tower footing impedance (TFI) tower footing resistance (TFR) transmission line Electric grounding Electric power transmission Electric power transmission networks Electromagnetic fields Ionization Lightning Soils Towers CDEGS Earthing design Footing resistance PSCAD Soil ionization Tower footing impedance Tower footing resistance Tower footings Transmission-line Electric lines |
| url_provider | http://dspace.uniten.edu.my/ |