Effect of soil resistivity on magnetic field in the case of lightning strike to a tall structure
When a tower is struck by lightning, an induced voltage can generate in conducting objects within its vicinity. This phenomenon is due to the interaction between the electromagnetic field of the lightning with the object. The magnetic field is part of this field. Previous studies have shown that the...
| Main Authors: | , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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IEEE
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/56274/1/Effect%20of%20soil%20resistivity%20on%20magnetic%20field%20in%20the%20case%20of%20lightning%20strike%20to%20a%20tall%20structure.pdf |
| _version_ | 1825931383772545024 |
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| author | Rameli, Norhidayu Ab Kadir, Mohd Zainal Abidin Izadi, Mahdi Gomes, Chandima Azis, Norhafiz |
| author_facet | Rameli, Norhidayu Ab Kadir, Mohd Zainal Abidin Izadi, Mahdi Gomes, Chandima Azis, Norhafiz |
| author_sort | Rameli, Norhidayu |
| collection | UPM |
| description | When a tower is struck by lightning, an induced voltage can generate in conducting objects within its vicinity. This phenomenon is due to the interaction between the electromagnetic field of the lightning with the object. The magnetic field is part of this field. Previous studies have shown that the magnetic field is affected by ground reflection coefficient factors that are usually taken as constants. However, the ground reflection coefficient factors have correlation with tower and ground impedance whereby the ground impedance can be determined based on soil resistivity and grounding system. This paper investigates the effect of soil resistivity on the value of magnetic field for a case of lightning strike on tall structures. Lightning current has been modelled accordingly and a set of equations is proposed to evaluate the magnetic field. Also, the effects of soil resistivity on the value of ground reflection coefficient factor consequently of the magnetic peak have been investigated. The results indicate that the magnetic field changes substantially with a variation of the soil resistivity. The magnetic field peak also has a strong correlation with the changes of soil resistivity as well as the fast front time of the channel base current. The outcome of the result of this paper will be beneficial to utility companies in determining the appropriate level of lightning protection since the magnetic field will be a result of induced voltage when have interaction with power lines. |
| first_indexed | 2024-03-06T09:25:55Z |
| format | Conference or Workshop Item |
| id | upm.eprints-56274 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:25:55Z |
| publishDate | 2016 |
| publisher | IEEE |
| record_format | dspace |
| spelling | upm.eprints-562742017-07-31T04:14:41Z http://psasir.upm.edu.my/id/eprint/56274/ Effect of soil resistivity on magnetic field in the case of lightning strike to a tall structure Rameli, Norhidayu Ab Kadir, Mohd Zainal Abidin Izadi, Mahdi Gomes, Chandima Azis, Norhafiz When a tower is struck by lightning, an induced voltage can generate in conducting objects within its vicinity. This phenomenon is due to the interaction between the electromagnetic field of the lightning with the object. The magnetic field is part of this field. Previous studies have shown that the magnetic field is affected by ground reflection coefficient factors that are usually taken as constants. However, the ground reflection coefficient factors have correlation with tower and ground impedance whereby the ground impedance can be determined based on soil resistivity and grounding system. This paper investigates the effect of soil resistivity on the value of magnetic field for a case of lightning strike on tall structures. Lightning current has been modelled accordingly and a set of equations is proposed to evaluate the magnetic field. Also, the effects of soil resistivity on the value of ground reflection coefficient factor consequently of the magnetic peak have been investigated. The results indicate that the magnetic field changes substantially with a variation of the soil resistivity. The magnetic field peak also has a strong correlation with the changes of soil resistivity as well as the fast front time of the channel base current. The outcome of the result of this paper will be beneficial to utility companies in determining the appropriate level of lightning protection since the magnetic field will be a result of induced voltage when have interaction with power lines. IEEE 2016 Conference or Workshop Item PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/56274/1/Effect%20of%20soil%20resistivity%20on%20magnetic%20field%20in%20the%20case%20of%20lightning%20strike%20to%20a%20tall%20structure.pdf Rameli, Norhidayu and Ab Kadir, Mohd Zainal Abidin and Izadi, Mahdi and Gomes, Chandima and Azis, Norhafiz (2016) Effect of soil resistivity on magnetic field in the case of lightning strike to a tall structure. In: 2016 33rd International Conference on Lightning Protection (ICLP), 25-30 Sept. 2016, Estoril, Portugal. . 10.1109/ICLP.2016.7791485 |
| spellingShingle | Rameli, Norhidayu Ab Kadir, Mohd Zainal Abidin Izadi, Mahdi Gomes, Chandima Azis, Norhafiz Effect of soil resistivity on magnetic field in the case of lightning strike to a tall structure |
| title | Effect of soil resistivity on magnetic field in the case of lightning strike to a tall structure |
| title_full | Effect of soil resistivity on magnetic field in the case of lightning strike to a tall structure |
| title_fullStr | Effect of soil resistivity on magnetic field in the case of lightning strike to a tall structure |
| title_full_unstemmed | Effect of soil resistivity on magnetic field in the case of lightning strike to a tall structure |
| title_short | Effect of soil resistivity on magnetic field in the case of lightning strike to a tall structure |
| title_sort | effect of soil resistivity on magnetic field in the case of lightning strike to a tall structure |
| url | http://psasir.upm.edu.my/id/eprint/56274/1/Effect%20of%20soil%20resistivity%20on%20magnetic%20field%20in%20the%20case%20of%20lightning%20strike%20to%20a%20tall%20structure.pdf |
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