Lightning-induced voltage on an overhead wire dependent on ground conductivity
Lightning-induced voltage on an overhead wire dependent on ground conductivity
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DOI：
10.1109/61.277685
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发表时间：
1994
影响因子：
4.4
通讯作者：
M. Ishii;K. Michishita;Y. Hongo;Syujiro Oguma
中科院分区：
文献类型：
--
作者：
M. Ishii;K. Michishita;Y. Hongo;Syujiro Oguma
通过求解电报员方程，结合回击电流作为感应源的电场数值计算，分析了架空导线上的雷电感应电压波形。基于一个新的等效电路解释这种方法，垂直和水平电场的作用，在产生感应电压的基础上，分别进行了研究。通过数值计算，指出线路端部雷感电压波形的峰值受地电导率和雷击点的影响较大。计算结果的准确性得到了保证，通过与实验结果从几何模型上获得的导电地面。>
Lightning-induced voltage waveforms on an overhead wire are analyzed by solving the Telegrapher's equation, in combination with numerical calculations of electric fields from return stroke currents as inducing sources. Based on an equivalent circuit newly developed for an explanation of this method, the roles of the vertical and horizontal electric fields in generating the induced voltage are studied, respectively. By numerical calculations, it is pointed out that the crest value of the lightning-induced voltage waveform at the end of the line is greatly affected by the ground conductivity and the lightning striking points. The accuracy of the computed results is ensured by comparison with the experimental results obtained from a geometrical model on a finitely conducting ground. >