设为首页
加入收藏
Comprehensive Observation Experiments and Application Study of Artificially Triggered Lightning During 2006—2011
-
摘要: 2006—2011年夏季在广州野外雷电试验基地开展了广东综合闪电观测试验 (GCOELD)。试验期间，针对人工触发闪电进行了近距离声、光、电、磁特征等综合测量，对自动气象站电源线和信号线上产生的感应电压特征进行了观测和分析，并对广东省地闪定位网的探测效率和定位精度与人工触发闪电进行了比对和校验。试验结果表明：人工触发闪电回击峰值电流范围为-31.93~-6.67 kA，回击电流波形的半峰宽度的范围为6.18~74.19 μs，10%—90%的上升时间范围为0.24~2.25 μs。触发闪电的上行正先导的发展速度在104~105 m/s量级；人工触发闪电的回击过程在架空电源线路 (1200 m长，2 m高) 上产生的感应过电压可达十几千伏；广东电网闪电定位系统对人工触发闪电事件的探测效率为95%，平均定位误差为759 m，闪电定位系统反演得到的电流峰值与实际测量的电流峰值平均相对偏差为16.3%。Abstract: The Guangdong Comprehensive Observation Experiment on Lightning Discharge (GCOELD) has been conducted in Guangzhou Field Experiment Site for Lightning Research and Testing, Conghua, Guangdong, China from 2006 to 2010. In the experiments, the acoustics, optics, electricity and magneticelements of the discharge process in triggered lightning are observed synthetically. The characteristics of induced voltages produced by triggered lightning on power lines and signal lines of an automatic weather station are measured and analyzed. The triggered lightning technique is also used to test the detection efficiency and precision of lightning location system in Guangdong Province. The peak current of return stoke (RS), the transferred charge within 1 ms after the RS beginning, the half-peak width and the 10%—90% risetime for RS waveform are recorded and analyzed. The relationship between the luminosity of the lightning channel and the continuous current intensity during the initial stage and interval of the return strokes for triggered lightning flashes is analyzed. The results reveal that, on the whole, luminosity of the air-ionized part of lightning channel shows obvious positive correlation with current. Linear correlation exists between square root of integrated luminosity and current when the luminosity of lightning channel doesn't reach saturation in the high-speed images. However, the parameters in the fitting equation are slightly distinct for different processes. The 2D propagation speed of upward positive leader for the triggered lightning is about 104—105 m·s-1. The speed of downward negative leader involved in altitude triggered lightning is about 105 m·s-1. The information on the shape and velocity of the leader channel provided by the high-speed camera records and the synchronous electrical field change data are used to calculate the charge densities and current of upward positive leader for the triggered lightning. The results indicate that, prior to disintegration of the wire, the charge densities of the upward positive leaders range from several micro-coulombs to hundreds of micro-coulombs per meter, and the distribution of charge densityis strongly skewed toward the upward positive leader tips.The calculated current in the upward positive leaders ranges from less than one to dozens of amperes, and increases with the ongoing propagation of the leader. The induced voltage pulse caused by the RS on the overhead power line appears as a positive peak initially and then declines sharply, followed by a negative peak, with a period of several microseconds between the positive and negative peaks. The maximum negative and positive peaks of the bipolar induced voltages on the power line are-10.31 kV and 4.47 kV, respectively. The voltage associated with the fast-changing pulses superposed on the continuous current following the return strokes can exceed 1 kV. The waveform of voltage on the signal for wind speed shows the peak pulses resembled a "V" shape. The results of the lightning location system in Guangdong report that the flash and stroke detection efficiency are 92% and 45% for rocket-triggered lightning, respectively. The space location error ranges from 111 to 5250 m with a mean space location error of 759 m. The relative error between peak current estimated by LLS and the direct measured current from the channel bottom of artificial triggered lightning is 16.3%.
-
图 3 2009年6月22日一次经典触发闪电的电流波形 (大图为大量程条件下的测量结果；回击过程1和回击过程2分别为两次回击的放大图；初始阶段的放大图为小量程条件下的测量结果)
Fig. 3 Current waveform of classical triggered lightning on 22 June 2009
(the big figure is record of current with large range; small figures for the first and second return strokes are extended figure, from big figure, respectively; small figure for initial state is extended figure from big figure, but with small range)
图 4 2007年7月1日触发闪电直窜先导过程的宽带干涉仪定位结果
Fig. 4 Located result of broadband interferometer for dart leader involving in the triggered lightning on 1 July 2007
图 5 2008年8月12日一次人工触发闪电在自动气象站输电线上产生的感应电压观测记录
Fig. 5 The induced voltages on the transmission line of automatic weather station caused by the triggered lightning on 12 August 2008
图 7 人工触发闪电电流直接测量结果与闪电定位系统反演得到的闪电电流结果对比
Fig. 7 Return stroke peak currents from direct measurement versus corresponding values from lightening location system for artificial-triggered lightning strokes
表 1 触发闪电回击电流波形参数
Table 1 Characteristics of return stroke current parameters
统计量 Ipeak/kA tHPW/μs t/μs G/(kA·μs-1) Gmax/(kA·μs-1) Q1/C AI1/(103 A2·s) 最小值 6.67 6.18 0.22 3.90 10.00 0.44 1.11 最大值 31.93 74.19 2.25 74.98 117.08 4.16 28.89 算术平均值 17.43 23.93 0.53 34.93 63.40 1.76 9.41 几何平均值 16.07 19.29 0.44 29.61 54.01 1.36 5.39 标准差 6.95 16.44 0.41 17.59 29.29 1.24 9.31 对数标准差 0.18 0.29 0.24 0.30 0.29 0.32 0.49 
下载: 导出CSV
-
[1] Uman M A. The Lightning Discharge. Dover Publications Inc, 2001:226-228. https://www.goodreads.com/book/show/286438.The_Lightning_Discharge [2] Miki M, Rakov V A, Shindo T, et al. Initial stage in lightning initiated from tall objects and in rocket-triggered lightning. J Geophys Res, 2005, 110, D02109, doi:10.1029/ 2003JD004474. [3] Hubert P, Laroche P, Eybert-Berard, et al. Triggered lightning in New Mexico. J Geophys Res, 1984, 89:2511-2521. doi: 10.1029/JD089iD02p02511 [4] Brook M, Kitagawa N, Workman E J. Quantitative study of strokes and continuing currents in lightning discharges to ground. J Geophys Res, 1962, 67:649-659. doi: 10.1029/JZ067i002p00649 [5] Depasse P. Statistics on aritificially triggered lightning. J Geophys Res, 1994, 99:18515-18522. doi: 10.1029/94JD00912 [6] Le Vine D M, Willett J C, Bailey J C. Comarison of fast electric field changes from subsequent return strokes of natural and triggered lightning. J Geophys Res, 1989, 94:13259-13265. doi: 10.1029/JD094iD11p13259 [7] Mach D M, Rust W D. Two-dimendional speed and optical risetime estimates for natural and triggered lightning dart leaders. J Geophys Res, 1997, 102:13673-13684. doi: 10.1029/97JD00926 [8] Jordan D M, Idone V P, Rakov V A, et al. Observed dart leader speed in natural and triggered lightning. J Geophys Res, 1992, 97(D9):9951-9957. doi: 10.1029/92JD00566 [9] Mach D M, Rust W D. Photoelectric return-stroke velocity and peak current estimated in natural and triggered lightning. J Geophys Res, 1989, 94:13237-13247. doi: 10.1029/JD094iD11p13237 [10] Rakov V A, Uman M A. Lightning: Physics and Effects. Cambridge: Cambridge University Press, 2003:108-152. [11] Horii K. Experiment of artificial lightning triggered with rocket. Mem Fac Eng Nagoya Univ Japan, 1982, 34(1): 77-112. https://www.researchgate.net/publication/285969354_EXPERIMENT_OF_ARTIFICIAL_LIGHTNING_TRIGGERED_WITH_ROCKET [12] Liu X S, Zhang Y J. Review of artificially triggered lightning study in China. TIEE Japan, 1998, 118-B (2): 170-175. https://www.jstage.jst.go.jp/article/ieejpes1990/118/2/118_2_170/_article [13] 郄秀书, 张义军, 张其林.闪电放电特征和雷暴电荷结构研究.气象学报, 2005, 63(5):646-657. doi: 10.11676/qxxb2005.063 [14] Qie X S, Zhao Y, Zhang Q L, et al. Characteristics of triggered lightning during Shandong artificial triggering lightning experiment (SHATLE). Atmos Res, 2009, 9: 310-315. http://www.sciencedirect.com/science/article/pii/S0169809508002019 [15] Rakov V A, Uman M A, Fernandez M I, et al. Direct lightning strikes to the lightning protective system of a residential building: Triggered lightning experiments. IEEE Transactions on Power Delivery, 2002, 17(2): 575-586. doi: 10.1109/61.997942 [16] 陈绍东, 张义军, 杨少杰, 等.人工触发闪电引发的低压电源系统过电压特征.高电压技术, 2009, 35(12): 2944-2952. http://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ200912011.htm [17] 吕伟涛, 张义军, 周秀骥, 等.火箭触发闪电物理过程的光学特征分析.气象学报, 2007, 65(6):983-993. doi: 10.11676/qxxb2007.093 [18] Lu W, Zhang Y, Zhou X, et al. Simultaneous optical and electrical observations on the initial processes of altitude-triggered negative lightning. Atmos Res, 2009, 91: 353-359. doi: 10.1016/j.atmosres.2008.01.011 [19] 刘恒毅.闪电云内放电过程的宽带干涉仪观测研究.北京:中国气象科学研究院, 2012. [20] Zhang Y J, Dong W S, Zhang G S, et al. Characteristics of the leader processes for artificially triggered lightning. Chinese Journal of Geophysics, 2003, 46:446-449. doi: 10.1002/cjg2.3383/full#references [21] Fisher R, Schnetzer G, Thottappillil R, et al. Parameters of triggered-lightning flashes in Florida and Alabama. J Geophys Res, 1993, 98(D12):22887-22902. doi: 10.1029/93JD02293 [22] Depasse P. Statistics on artificially triggered lightning. J Geophys Res, 1994, 99(D9):18515-18522. doi: 10.1029/94JD00912 [23] Uman M A, Rakov V A, Schnetzer G H, et al. Time derivative of the electric field 10, 14, and 30 m from triggered lightning strokes. J Geophys Res, 2000, 105(D12):15577-15595. doi: 10.1029/2000JD900046 [24] Schoene J, Uman M A, Rakov V A, et al. Statistical characteristics of the electric and magnetic fields and their time derivatives 15 m and 30 m from triggered lightning. J Geophys Res, 2003, 108(D6):4192. doi: 10.1029/2002JD002698 [25] Schoene J, Uman M A, Rakov V A, et al. Characterization of return-stroke currents in rocket-triggered lightning. J Geophy Res, 2009, 114, D03106, doi: 10.1029/2008JD009873. [26] 张义军, 刘欣生.南方人工引发雷电试验及电流特性分析.中国电机工程学报, 1999, 19:59-62. doi: 10.3321/j.issn:0258-8013.1999.03.014 [27] 赵阳, 郄秀书, 孔祥贞, 等.人工触发闪电电流波形特征参数分析.物理学报, 2009, 58(9):6616-6626. doi: 10.7498/aps.58.6616 [28] Lü Weitao, Zhou Enwei, Zhang Yang, et al. Correlation Analysis between Channel Current and Luminosity of Continuous Continuing Current Process in an Artificially Triggered Lightning Flash. 7th Asia-Pacific International Conference on Lightning. Chengdu, China, 2011: 322-326. [29] 李俊, 张义军, 吕伟涛, 等.一次多回击自然闪电的高速摄像观测.应用气象学报, 2008, 19(4):401-411. doi: 10.11898/1001-7313.20080403 [30] 李俊, 吕伟涛, 张义军, 等.一次多分叉多接地的空中触发闪电过程.应用气象学报, 2010, 21(1):95-100. doi: 10.11898/1001-7313.20100113 [31] Zheng D, Chen M, Zhang Y, et al. A New Method for the Calculation of the Linear Charge Density and Current in Upward Positive Leader. 2010 Asia-Pacific International Symposium on Electromagnetic Compatibility. Beijing, China, 2010. [32] 郑栋, 孟青, 吕伟涛, 等.北京及其周边地区夏季地闪活动时空特征分析.应用气象学报, 2005, 16(5):638-644. doi: 10.11898/1001-7313.20050510 [33] 张义军, 孟青, 马明, 等.闪电探测技术发展和资料应用.应用气象学报, 2006, 17(5):611-620. doi: 10.11898/1001-7313.20060504 [34] 张文娟, 孟青, 吕伟涛, 等.时间差闪电监测网的误差分析和布局优化.应用气象学报, 2009, 20(4):402-410. doi: 10.11898/1001-7313.20090403 [35] Jerauld J, Rakov V A, Uman U A. An evaluation of the performance characteristics of the US National Lightning Detection Network in Florida using rocket-triggered lightning. J Geophys Res, 2005, 110(10): 19106-19121. https://new.ece.ufl.edu/content/evaluation-performance-characteristics-u-s-national-lightning-detection-network-florida -
图(7) / 表(1)
计量
- 摘要浏览量: 4215
- HTML全文浏览量: 1402
- PDF下载量: 1385
- 被引次数: 0
