Comparative Analysis of Current of Rocket-Triggered Lightning Striking the Overhead Line and the Ground
Cai Li1, Du Yiyang1, Hu Qiang1, Peng Xiangyang2, Chen Shaodong3
1. School of Electrical Engineering and Automation Wuhan University Wuhan 430072 China; 2. Guangdong Grid Electric Power Research Institute Guangzhou 510000 China; 3. Guangzhou Institute of Tropical and Marine Meteorology China Meteorological Administration Guangzhou 510080 China
Abstract:Most of the current rocket-triggered lightning experiments are conducted with lightning strikes on the ground. Related studies have shown that the properties of the struck object affect the parameters of the lightning. The paths of the lightning flow are very different between direct lightning strikes on the ground and direct lightning strikes on overhead line. It is necessary to obtain the lightning parameters of a real overhead line direct strike and analyze the similarities and differences between them and the ground direct strike lightning parameters for power system lightning protection. Rocket-triggered lightning experiments were conducted at the Guangzhou Field Experiment Site for Lightning Research and Testing in Conghua, Guangzhou, during the summer of 2018 and 2019. Lightning strikes objects are divided into two kinds, one is overhead line and the other is ground. When lightning strikes on the ground, the lightning current is introduced by the inducing rod to the current measuring equipment installed in the ground launcher, and flows directly into the soil after measurement (grounding resistance is 6.7 Ω). When the lightning strikes on overhead line, the lightning current is first introduced by the current measuring equipment installed in the top of the tower launcher, measured and then flows into the 10 kV overhead line via a wire, and finally the majority of the lightning current flows into the soil via the two nearest towers (the characteristic impedance of the overhead line is about 200 Ω). The current parameters characteristics of the initial stage, return strokes and M-components in the case of lightning to ground and lightning to overhead line are analyzed to compare whether they differ and to analyze the reasons for the differences. The maximum current, average current, transfer charge, and action integral of the initial stage in the case of lightning to the ground are 2.8, 2.4, 2.0, and 5.3 times those of the lightning to the overhead line. There is no significant difference in the duration of the initial stage between two conditions. The geometric mean of the rise time of the return stroke when the lightning strikes the ground is 0.25 μs, which is much smaller than 0.60 μs when the lightning strikes the overhead line. For other waveform parameters of return strokes such as the current peak, the difference is not obvious. The M-components are similar to the initial continuing current pulses, and the current peak value, transfer charge, continuing current level in the case of lightning to the overhead line are all smaller than those of the lightning to the ground. The rise time, half-peak width, and duration of the M-components are also smaller than those of the lightning to the ground, with the former being about 0.56, 0.59, and 0.40 times the latter. Analysis based on Norton current source equivalent circuit model. The reason for the difference in lightning current between the two lightning conditions is that the equivalent impedance of the lightning channel is different in each stage.
蔡力, 杜懿阳, 胡强, 彭向阳, 陈绍东. 火箭引雷至架空线路与地面电流对比分析[J]. 电工技术学报, 2024, 39(3): 914-923.
Cai Li, Du Yiyang, Hu Qiang, Peng Xiangyang, Chen Shaodong. Comparative Analysis of Current of Rocket-Triggered Lightning Striking the Overhead Line and the Ground. Transactions of China Electrotechnical Society, 2024, 39(3): 914-923.
[1] Uman M A.The Art and Science of Lightning Protection[M]. Cambridge: Cambridge University Press, 2008. [2] 王红斌, 程思, 范伟男, 等. 雷暴活动全闪电定位及空间演变过程分析[J]. 电工技术学报, 2021, 36(2): 373-379. Wang Hongbin, Cheng Si, Fan Weinan, et al.Total lightning location of thunderstorm activities and spatial evolution process analysis[J]. Transactions of China Electrotechnical Society, 2021, 36(2): 373-379. [3] 张文锋, 李志伟, 张国建, 等. 山区35kV架空线路雷击特性仿真分析[J]. 电气技术, 2022, 23(9): 19-28. Zhang Wenfeng, Li Zhiwei, Zhang Guojian, et al.Simulation analysis on lightning strike characteristics of 35kV overhead lines in mountainous area[J]. Electrical Engineering, 2022, 23(9): 19-28. [4] 孟国栋, 折俊艺, 应琪, 等. 微米尺度气体击穿的数值模拟研究进展[J]. 电工技术学报, 2022, 37(15): 3857-3875. Meng Guodong, She Junyi, Ying Qi, et al.Research progress on numerical simulation of gas breakdown at microscale[J]. Transactions of China Electrotechnical Society, 2022, 37(15): 3857-3875. [5] 蔡力, 柯逸丰, 李进, 等. 基于高速摄像观测的风电场雷击风机发展过程和特性分析[J]. 电工技术学报, 2021, 36(增刊1): 303-310. Cai Li, Ke Yifeng, Li Jin, et al.Development process and characteristic analysis of the natural lightning strike on wind turbine based on high-speed camera observation[J]. Transactions of China Electrotechnical Society, 2021, 36(S1): 303-310. [6] Fieux R P, Gary C H, Hutzler B P, et al. Research on artificially triggered lightning in France[J]. IEEE Transactions on Power Apparatus and Systems, 1978, PAS-97(3): 725-733. [7] Hubert P, Laroche P, Eybert-Berard A, et al.Triggered lightning in new Mexico[J]. Journal of Geophysical Research: Atmospheres, 1984, 89(D2): 2511-2521. [8] Fisher R J, Schnetzer G H, Thottappillil R, et al.Parameters of triggered-lightning flashes in Florida and Alabama[J]. Journal of Geophysical Research: Atmospheres, 1993, 98(D12): 22887-22902. [9] 刘亚坤, 戴明秋, 毕晓蕾, 等. 三种冲击电流连续作用下铝3003合金的损伤特性[J]. 电工技术学报, 2020, 35(6): 1173-1180. Liu Yakun, Dai Mingqiu, Bi Xiaolei, et al.Damage characteristics of Al alloy 3003 suffered from three continuous impulse currents[J]. Transactions of China Electrotechnical Society, 2020, 35(6): 1173-1180. [10] 周蜜, 丁文汉, 王建国, 等. 闪电连接高度对地面电场波形的影响[J]. 电工技术学报, 2021, 36(4): 857-868. Zhou Mi, Ding Wenhan, Wang Jianguo, et al.Effect of lightning junction height on ground electric field waveform[J]. Transactions of China Electrotechnical Society, 2021, 36(4): 857-868. [11] 张亮, 何聪, 李军浩, 等. 振荡雷电冲击电压下气体绝缘组合电器中极不均匀场击穿特性研究[J]. 电工技术学报, 2020, 35(12): 2672-2680. Zhang Liang, He Cong, Li Junhao, et al.Breakdown characteristics study of non-uniform field in gas insulated switchgear under oscillating lightning impulses[J]. Transactions of China Electrotechnical Society, 2020, 35(12): 2672-2680. [12] Miki M.Initial stage in lightning initiated from tall objects and in rocket-triggered lightning[J]. Journal of Geophysical Research: Atmospheres, 2005, 110(D2): D02109. [13] Qie Xiushu, Jiang Rubin, Yang Jing. Characteristics of current pulses in rocket-triggered lightning[J]. Atmospheric Research, 2014, 135/136: 322-329. [14] Zheng Dong, Zhang Yijun, Zhang Yang, et al.Characteristics of the initial stage and return stroke currents of rocket-triggered lightning flashes in Southern China[J]. Journal of Geophysical Research: Atmospheres, 2017, 122(12): 6431-6452. [15] Rakov V A, Uman M A, Rambo K J, et al.New insights into lightning processes gained from triggered-lightning experiments in Florida and Alabama[J]. Journal of Geophysical Research: Atmospheres, 1998, 103(D12): 14117-14130. [16] Schoene J, Uman M A, Rakov V A, et al.Characterization of return-stroke currents in rocket-triggered lightning[J]. Journal of Geophysical Research: Atmospheres, 2009, 114(D3): D03106. [17] Malan D J, Schonland B F J. Progressive lightning. VII. Directly-correlated photographic and electrical studies of lightning from near thunderstorms[J]. Proceedings of the Royal Society of London Series A Mathematical and Physical Sciences, 1947, 191(1027): 485-503. [18] Zhang Yijun, Lü Weitao, Chen Shaodong, et al.A review of advances in lightning observations during the past decade in Guangdong, China[J]. Journal of Meteorological Research, 2016, 30(5): 800-819. [19] Ma Zilong, Jiang Rubin, Sun Zhuling, et al.Characteristics of impulsive currents superimposing on continuous/continuing current of rocket-triggered lightning[J]. IEEE Transactions on Electromagnetic Compatibility, 2020, 62(4): 1200-1208. [20] Rakov V A.Transient response of a tall object to lightning[J]. IEEE Transactions on Electromagnetic Compatibility, 2001, 43(4): 654-661. [21] Pavanello D, Rachidi F, Janischewskyj W, et al.On the current peak estimates provided by lightning detection networks for lightning return strokes to tall towers[J]. IEEE Transactions on Electromagnetic Compatibility, 2009, 51(3): 453-458. [22] Rachidi F, Janischewskyj W, Hussein A M, et al.Current and electromagnetic field associated with lightning-return strokes to tall towers[J]. IEEE Transactions on Electromagnetic Compatibility, 2001, 43(3): 356-367. [23] 陈怀飞, 王宇, 孙通, 等. 风机回击电磁场波形特征及辐射增强效应研究[J]. 高电压技术, 2020, 46(6): 2122-2130. Chen Huaifei, Wang Yu, Sun Tong, et al.Study on waveform characteristics and radiation enhancement effect of lightning return stroke initiated from wind turbine[J]. High Voltage Engineering, 2020, 46(6): 2122-2130. [24] Zhou Fangcong, Zhang Yijun, Lu Weitao, et al.Characteristics of initial continuous and continuing current processes in rocket-triggered lightning[C]// XV International Conference on Atmospheric Electricity, Norman, Oklahoma, USA, 2014: 1-12. [25] Thottappillil R, Goldberg J D, Rakov V A, et al.Properties of M components from currents measured at triggered lightning channel base[J]. Journal of Geophysical Research: Atmospheres, 1995, 100(D12): 25711-25720.