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高原气象  2018, Vol. 37 Issue (4): 1094-1101    DOI: 10.7522/j.issn.1000-0534.2017.00087
论文     
基于FDTD传输线雷电感应过电压模拟研究
高金阁1,2, 马京津1, 马海鹏1, 朴文1
1. 北京市气象灾害防御中心, 北京 100089;
2. 中国气象局北京城市气象研究所, 北京 100089
Simulation of Lightning Induced Overvoltage on Transmission Line Based on FDTD
GAO Jinge1,2, MA Jingjin1, MA Haipeng1, PIAO Wen1
1. Beijing Meteorological Disaster Prevention Center, Beijing 100089, China;
2. Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China
 全文: PDF 
摘要: 以Agrawal模型电报方程为理论基础推导其时域形式,利用时域有限差分方法(Finite-Difference Time-Domain,FDTD)实现架空传输线雷电感应过电压计算。通过比对分析证明方法的有效性,进而研究传输线位置、架设高度以及土壤电导率对雷电感应电压的影响。结果表明,当观测点从线路中点向端点移动时,感应电压逐渐减小,电压波形的双极性特征越来越明显。线路中点电压和端点正向电压峰值随传输线高度升高而增大,而随着土壤导电性的减小,线路中点电压增大,端点电压变小。此外,散射电压分量受土壤电导率影响较为显著,而入射电压分量则不受其影响。
关键词: FDTD架空传输线雷电感应电压有限电导率    
Abstract: In order to provide scientific guidance for lightning protection design of transmission lines, the Agrawal model telegraph equation's time domain form was deduced as the theoretical foundation, and the Finite-Difference Time-Domain (FDTD) method was used as the computational method, the double Heidler function was used to simulate the base current of the return stroke channel, the improved linear attenuated transmission line (MTLL) return stroke model was selected to calculate the lightning induced voltage on the overhead transmission lines. The effectiveness of the above method is proved by comparative analysis. Then the influences of position, height and soil conductivity on lightning induced voltage were studied. The results show that the horizontal electric field component and the vertical electric field component in the lightning electromagnetic pulse are very important in the coupling mechanism. When the observation point moves from the midpoint of the line to the endpoint, the induced voltage decreases gradually, and the bipolar characteristics of the waveform become more and more obvious, this may be related to the attenuation of the path. The midpoint voltage and the forward voltage of the endpoint increase with the height of the transmission line. Therefore, the designer can reduce the line height to reduce the damage of lightning coupling voltage to the transmission line. With the decrease of soil electrical conductivity, the midpoint voltage increases, and the endpoint voltage decreases. In addition, the response of the scattering voltage component to the soil conductivity changes significantly, while the incident voltage component is not affected.
Key words: FDTD    overhead transmission line    lightning induced voltage    finite conductivity
收稿日期: 2017-06-16 出版日期: 2018-08-22
:  TM86  
基金资助: 北京市气象局科技项目(BMBKJ201705004);中国气象局气候变化专项(CCSF201735)
作者简介: 高金阁(1987-),男,辽宁营口人,工程师,主要从事雷电物理和雷电感应过电压研究工作.E-mail:gjg_ge@126.com
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引用本文:

高金阁, 马京津, 马海鹏, 朴文. 基于FDTD传输线雷电感应过电压模拟研究[J]. 高原气象, 2018, 37(4): 1094-1101.

GAO Jinge, MA Jingjin, MA Haipeng, PIAO Wen. Simulation of Lightning Induced Overvoltage on Transmission Line Based on FDTD. Plateau Meteorology, 2018, 37(4): 1094-1101.

链接本文:

http://www.gyqx.ac.cn/CN/10.7522/j.issn.1000-0534.2017.00087        http://www.gyqx.ac.cn/CN/Y2018/V37/I4/1094

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