Experimental analysis of flashover characteristics for overhead power lines based on the lightning fractal model
In recent years, a fractal model that can reflect the tortuosity and dispersion of lightning has been gradually used in the research of lightning shielding performance for overhead power lines, based on electrical geometric models and pioneering development models. In this paper, a 1 ∶40 scaled expe...
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Editorial Department of Electric Power Engineering Technology
2025-01-01
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| Series: | 电力工程技术 |
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| Online Access: | https://www.epet-info.com/dlgcjsen/article/abstract/230725908 |
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| author | ZHAN Jintao YANG Tianyi GUO Jun |
| author_facet | ZHAN Jintao YANG Tianyi GUO Jun |
| author_sort | ZHAN Jintao |
| collection | DOAJ |
| description | In recent years, a fractal model that can reflect the tortuosity and dispersion of lightning has been gradually used in the research of lightning shielding performance for overhead power lines, based on electrical geometric models and pioneering development models. In this paper, a 1 ∶40 scaled experimental platform based on the equivalence between simulation experiments and natural lightning is constructed, with the ZB6T type tower commonly used in 500 kV transmission lines as the research object. A negative polarity impulse wave of 160/2 500 μs is applied to investigate the relationship between flashover probability, spatial distribution, and protection angle. Based on the WZ model and finite difference method, a lightning fractal model is established, and the characteristics of line flashover are simulated and analyzed under the configuration of the scaled experimental gap. Both the simulation experiments and the simulation results indicate that the points with high flashover probability are concentrated near the transmission line, and the overall flashover space presents a parabolic shape, conforming to the flashover law. As the protection angle decreases, the flashover probability decreases correspondingly, and the flashover space slightly decreases. The simulation results verify the reliability of the simulation experiments and the correctness of the model. Comparing the simulation results with the experimental data, the model shows a high level of reliability. |
| format | Article |
| id | doaj-art-e6503cd3d96143a39ddcbcce5e3d8b91 |
| institution | Kabale University |
| issn | 2096-3203 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Editorial Department of Electric Power Engineering Technology |
| record_format | Article |
| series | 电力工程技术 |
| spelling | doaj-art-e6503cd3d96143a39ddcbcce5e3d8b912025-02-08T08:40:18ZzhoEditorial Department of Electric Power Engineering Technology电力工程技术2096-32032025-01-0144112613510.12158/j.2096-3203.2025.01.013230725908Experimental analysis of flashover characteristics for overhead power lines based on the lightning fractal modelZHAN Jintao0YANG Tianyi1GUO Jun2School of Electrical Engineering, Xi′an Jiaotong University, Shaanxi 710049, ChinaSchool of Electrical Engineering, Xi′an Jiaotong University, Shaanxi 710049, ChinaSchool of Electrical Engineering, Xi′an Jiaotong University, Shaanxi 710049, ChinaIn recent years, a fractal model that can reflect the tortuosity and dispersion of lightning has been gradually used in the research of lightning shielding performance for overhead power lines, based on electrical geometric models and pioneering development models. In this paper, a 1 ∶40 scaled experimental platform based on the equivalence between simulation experiments and natural lightning is constructed, with the ZB6T type tower commonly used in 500 kV transmission lines as the research object. A negative polarity impulse wave of 160/2 500 μs is applied to investigate the relationship between flashover probability, spatial distribution, and protection angle. Based on the WZ model and finite difference method, a lightning fractal model is established, and the characteristics of line flashover are simulated and analyzed under the configuration of the scaled experimental gap. Both the simulation experiments and the simulation results indicate that the points with high flashover probability are concentrated near the transmission line, and the overall flashover space presents a parabolic shape, conforming to the flashover law. As the protection angle decreases, the flashover probability decreases correspondingly, and the flashover space slightly decreases. The simulation results verify the reliability of the simulation experiments and the correctness of the model. Comparing the simulation results with the experimental data, the model shows a high level of reliability.https://www.epet-info.com/dlgcjsen/article/abstract/230725908lightning fractal modelequivalencereduced-scale testoverhead power linesflashover probabilitylightning shielding analysis |
| spellingShingle | ZHAN Jintao YANG Tianyi GUO Jun Experimental analysis of flashover characteristics for overhead power lines based on the lightning fractal model 电力工程技术 lightning fractal model equivalence reduced-scale test overhead power lines flashover probability lightning shielding analysis |
| title | Experimental analysis of flashover characteristics for overhead power lines based on the lightning fractal model |
| title_full | Experimental analysis of flashover characteristics for overhead power lines based on the lightning fractal model |
| title_fullStr | Experimental analysis of flashover characteristics for overhead power lines based on the lightning fractal model |
| title_full_unstemmed | Experimental analysis of flashover characteristics for overhead power lines based on the lightning fractal model |
| title_short | Experimental analysis of flashover characteristics for overhead power lines based on the lightning fractal model |
| title_sort | experimental analysis of flashover characteristics for overhead power lines based on the lightning fractal model |
| topic | lightning fractal model equivalence reduced-scale test overhead power lines flashover probability lightning shielding analysis |
| url | https://www.epet-info.com/dlgcjsen/article/abstract/230725908 |
| work_keys_str_mv | AT zhanjintao experimentalanalysisofflashovercharacteristicsforoverheadpowerlinesbasedonthelightningfractalmodel AT yangtianyi experimentalanalysisofflashovercharacteristicsforoverheadpowerlinesbasedonthelightningfractalmodel AT guojun experimentalanalysisofflashovercharacteristicsforoverheadpowerlinesbasedonthelightningfractalmodel |