A lightning attachment model to UHV transmission lines based on FEM
Developing a numerical simulation model for shielding failure evaluation of UHV transmission lines is an urgent task. In this article, a dynamic leader propagation model of lightning attachment to UHV transmission lines was developed based on FEM. The lightning downward leader descending vertically...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
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IEEE
2023
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| _version_ | 1825949007006924800 |
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| author | Ma, Ziwei Jasni, Jasronita Ab Kadir, Mohd Zainal Abidin Azis, Norhafiz |
| author_facet | Ma, Ziwei Jasni, Jasronita Ab Kadir, Mohd Zainal Abidin Azis, Norhafiz |
| author_sort | Ma, Ziwei |
| collection | UPM |
| description | Developing a numerical simulation model for shielding failure evaluation of UHV transmission lines is an urgent task. In this article, a dynamic leader propagation model of lightning attachment to UHV transmission lines was developed based on FEM. The lightning downward leader descending vertically at a speed of 2×105m/s from a distance of 50 m from the side of the UHV transmission line was considered as a lossy conductor. Peek’s formula was used for initial corona inception criterion. The streamer space charge and the leader length were calculated by using the voltage distortion method. The upward leader was assumed to propagate in the direction of the maximum field strength. The final jump was considered to occur once the average electric field strength of the remaining gap reaches 450 kV/m. Without considering the operating voltage, the simulation result shows that the striking distance of the ground wire under the return stroke current of 10 kA, 20 kA, 30 kA, 40 kA and 50 kA is 54 m, 94 m, 143 m, 157 m, and 234m respectively. A new expression of rs=7.2I0.87p for the striking distance calculation based on LPM was proposed. The striking distance calculated by this new model is between the EGM empirical model and theoretical model, which proves that the model is reasonable. |
| first_indexed | 2024-03-06T08:37:56Z |
| format | Conference or Workshop Item |
| id | upm.eprints-37288 |
| institution | Universiti Putra Malaysia |
| last_indexed | 2024-03-06T08:37:56Z |
| publishDate | 2023 |
| publisher | IEEE |
| record_format | dspace |
| spelling | upm.eprints-372882023-09-05T15:25:02Z http://psasir.upm.edu.my/id/eprint/37288/ A lightning attachment model to UHV transmission lines based on FEM Ma, Ziwei Jasni, Jasronita Ab Kadir, Mohd Zainal Abidin Azis, Norhafiz Developing a numerical simulation model for shielding failure evaluation of UHV transmission lines is an urgent task. In this article, a dynamic leader propagation model of lightning attachment to UHV transmission lines was developed based on FEM. The lightning downward leader descending vertically at a speed of 2×105m/s from a distance of 50 m from the side of the UHV transmission line was considered as a lossy conductor. Peek’s formula was used for initial corona inception criterion. The streamer space charge and the leader length were calculated by using the voltage distortion method. The upward leader was assumed to propagate in the direction of the maximum field strength. The final jump was considered to occur once the average electric field strength of the remaining gap reaches 450 kV/m. Without considering the operating voltage, the simulation result shows that the striking distance of the ground wire under the return stroke current of 10 kA, 20 kA, 30 kA, 40 kA and 50 kA is 54 m, 94 m, 143 m, 157 m, and 234m respectively. A new expression of rs=7.2I0.87p for the striking distance calculation based on LPM was proposed. The striking distance calculated by this new model is between the EGM empirical model and theoretical model, which proves that the model is reasonable. IEEE 2023 Conference or Workshop Item PeerReviewed Ma, Ziwei and Jasni, Jasronita and Ab Kadir, Mohd Zainal Abidin and Azis, Norhafiz (2023) A lightning attachment model to UHV transmission lines based on FEM. In: 12th Asia-Pacific International Conference on Lightning (APL 2023), 12-15 June 2023, Langkawi, Malaysia. . https://ieeexplore.ieee.org/document/10181984 10.1109/APL57308.2023.10181984 |
| spellingShingle | Ma, Ziwei Jasni, Jasronita Ab Kadir, Mohd Zainal Abidin Azis, Norhafiz A lightning attachment model to UHV transmission lines based on FEM |
| title | A lightning attachment model to UHV transmission lines based on FEM |
| title_full | A lightning attachment model to UHV transmission lines based on FEM |
| title_fullStr | A lightning attachment model to UHV transmission lines based on FEM |
| title_full_unstemmed | A lightning attachment model to UHV transmission lines based on FEM |
| title_short | A lightning attachment model to UHV transmission lines based on FEM |
| title_sort | lightning attachment model to uhv transmission lines based on fem |
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