军用电站电缆雷电感应过电压影响因素研究

doi:10.3969/j.issn.1000-1093.2014.02.012

兵工学报 ›› 2014, Vol. 35 ›› Issue (2): 214-219.doi: 10.3969/j.issn.1000-1093.2014.02.012

军用电站电缆雷电感应过电压影响因素研究

解璞，赵锦成，王川川，王勇

（军械工程学院电子工程系, 河北石家庄 050003）

收稿日期:2013-03-05 修回日期:2013-03-05 上线日期:2014-03-25
作者简介:解璞（1977—），女，副教授，博士
基金资助:
中国博士后基金项目（20100480648）

Research on the Influence Factors of Lightning-induced Over-voltage on Military Power Supply Cables

XIE Pu， ZHAO Jin-cheng， WANG Chuan-chuan， WANG Yong

(Department of Electrical Engineering, Mechanical Engineering College, Shijiazhuang 050003, Hebei, China)

Received:2013-03-05 Revised:2013-03-05 Online:2014-03-25

摘要/Abstract

摘要： 根据偶极子模型，研究雷电电磁场分布及其规律，建立军用电站电缆雷电感应过电压的计算模型并进行数值计算，分析了雷电流幅值、电缆长度、电缆高度、电缆端接电阻、雷击位置对电缆雷电感应过电压的影响规律。研究结果表明：过电压峰值大小与雷电流幅值、电缆高度、电缆长度呈一定的正比例关系，但当电缆长度增加到一定大小时，过电压峰值增加幅度越来越小；当始端为匹配电阻，末端感应过电压值随着末端电阻的增大而不断增大；闪电在电缆的垂直方向上距离不断增加时，其感应过电压迅速减小，并不与距离呈正比例关系。为军用电站雷电感应过电压的防护设计提供了量化参考指标。

关键词: 电气工程, 感应过电压, 时域有限差分, 电磁暂态, 电缆

Abstract: According to dipole model, the electromagnetic filed distribution laws at the discharge instantly time are acquired. A calculation model and a numerical solution of electric and magnetic fields of indirect lightning over-voltage are proprosed. The influence laws of lightning current amplitude, cable length, cable height, termination resistor and lightning location on induced over-voltage are discovered: peak value of indirect lightning over-voltage is proportional to lightning current amplitude, cable length and cable height. But when the cable length is increased to a certain size, the peak value of indirect lightning over-voltage increase rate tends to be small; when the starting end is the match resistance, the indirect lightning over-voltage of ending increases with the increase of end resistance. The lightning location in the vertical direction of the cable on distance increasing, the indirect lightning over-voltage rapidly decreases, and does not become direct ratio with the distance, which provides the quantitative indicators to the lightning protection design of the military power supply.

Key words: electrical engineering, lightning-induced over-voltage, finite-difference time-domain, electromagnetic transient, power cable

中图分类号:

TM862

解璞，赵锦成，王川川，王勇. 军用电站电缆雷电感应过电压影响因素研究[J]. 兵工学报, 2014, 35(2): 214-219.

XIE Pu， ZHAO Jin-cheng， WANG Chuan-chuan， WANG Yong. Research on the Influence Factors of Lightning-induced Over-voltage on Military Power Supply Cables[J]. Acta Armamentarii, 2014, 35(2): 214-219.

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军用电站电缆雷电感应过电压影响因素研究

Research on the Influence Factors of Lightning-induced Over-voltage on Military Power Supply Cables

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