Analytical fields expressions due to lightning channel considering variation of return stroke velocities along the lightning channel
The return stroke velocity is an important factor for evaluation of lightning electromagnetic fields. Measurements showed that the return stroke velocity is varied at different heights along lightning channel while it is usually entered into field calculations with a constant value in previous studi...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
IEEE
2012
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| Online Access: | http://psasir.upm.edu.my/id/eprint/39678/1/Analytical%20fields%20expressions%20due%20to%20lightning%20channel%20considering%20variation%20of%20return%20stroke%20velocities%20along%20the%20lightning%20channel.pdf |
| _version_ | 1825949455327690752 |
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| author | Izadi, Mahdi Ab Kadir, Mohd Zainal Abidin Gomes, Chandima Cooray, Vernon |
| author_facet | Izadi, Mahdi Ab Kadir, Mohd Zainal Abidin Gomes, Chandima Cooray, Vernon |
| author_sort | Izadi, Mahdi |
| collection | UPM |
| description | The return stroke velocity is an important factor for evaluation of lightning electromagnetic fields. Measurements showed that the return stroke velocity is varied at different heights along lightning channel while it is usually entered into field calculations with a constant value in previous studies. This paper presents the analytical electromagnetic fields expressions due to vertical lightning channel where velocity profile along channel is considered. The proposed fields expressions can be used to estimate electromagnetic fields directly in the time domain (without needing to apply any extra conversion to Frequency domain) whereas they are based on Heidler current function and can support widely used engineering current models. Likewise, the proposed field expressions are applied on a typical measured profile of velocity and also a function of velocity profile and the evaluated fields are compared to the corresponding simulated fields based on constant value of velocity and the results are discussed accordingly. |
| first_indexed | 2024-03-06T08:44:50Z |
| format | Conference or Workshop Item |
| id | upm.eprints-39678 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:44:50Z |
| publishDate | 2012 |
| publisher | IEEE |
| record_format | dspace |
| spelling | upm.eprints-396782017-02-23T13:40:31Z http://psasir.upm.edu.my/id/eprint/39678/ Analytical fields expressions due to lightning channel considering variation of return stroke velocities along the lightning channel Izadi, Mahdi Ab Kadir, Mohd Zainal Abidin Gomes, Chandima Cooray, Vernon The return stroke velocity is an important factor for evaluation of lightning electromagnetic fields. Measurements showed that the return stroke velocity is varied at different heights along lightning channel while it is usually entered into field calculations with a constant value in previous studies. This paper presents the analytical electromagnetic fields expressions due to vertical lightning channel where velocity profile along channel is considered. The proposed fields expressions can be used to estimate electromagnetic fields directly in the time domain (without needing to apply any extra conversion to Frequency domain) whereas they are based on Heidler current function and can support widely used engineering current models. Likewise, the proposed field expressions are applied on a typical measured profile of velocity and also a function of velocity profile and the evaluated fields are compared to the corresponding simulated fields based on constant value of velocity and the results are discussed accordingly. IEEE 2012 Conference or Workshop Item NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/39678/1/Analytical%20fields%20expressions%20due%20to%20lightning%20channel%20considering%20variation%20of%20return%20stroke%20velocities%20along%20the%20lightning%20channel.pdf Izadi, Mahdi and Ab Kadir, Mohd Zainal Abidin and Gomes, Chandima and Cooray, Vernon (2012) Analytical fields expressions due to lightning channel considering variation of return stroke velocities along the lightning channel. In: International Conference on Lightning Protection (ICLP), 2-7 Sept. 2012, Vienna, Austria. (pp. 1-5). 10.1109/ICLP.2012.6344252 |
| spellingShingle | Izadi, Mahdi Ab Kadir, Mohd Zainal Abidin Gomes, Chandima Cooray, Vernon Analytical fields expressions due to lightning channel considering variation of return stroke velocities along the lightning channel |
| title | Analytical fields expressions due to lightning channel considering variation of return stroke velocities along the lightning channel |
| title_full | Analytical fields expressions due to lightning channel considering variation of return stroke velocities along the lightning channel |
| title_fullStr | Analytical fields expressions due to lightning channel considering variation of return stroke velocities along the lightning channel |
| title_full_unstemmed | Analytical fields expressions due to lightning channel considering variation of return stroke velocities along the lightning channel |
| title_short | Analytical fields expressions due to lightning channel considering variation of return stroke velocities along the lightning channel |
| title_sort | analytical fields expressions due to lightning channel considering variation of return stroke velocities along the lightning channel |
| url | http://psasir.upm.edu.my/id/eprint/39678/1/Analytical%20fields%20expressions%20due%20to%20lightning%20channel%20considering%20variation%20of%20return%20stroke%20velocities%20along%20the%20lightning%20channel.pdf |
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