[1]徐迎辉,闫智,罗映红..雷击接触网对信号电缆电磁影响分析及防护[J].郑州大学学报(工学版),2013,34(01):70-74.[doi:10.3969/j.issn.1671-6833.2013.01.017]
　XU Ying-hui,YAN Zhi,LUO Ying-hong.Analysis and Protection of Lightning Catenary ElectromagneticImpact on the Signal Cable[J].Journal of Zhengzhou University (Engineering Science),2013,34(01):70-74.[doi:10.3969/j.issn.1671-6833.2013.01.017]
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雷击接触网对信号电缆电磁影响分析及防护()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
34
期数:
2013年01期
页码:
70-74
栏目:
出版日期:
2013-01-16

文章信息/Info

Title:
Analysis and Protection of Lightning Catenary ElectromagneticImpact on the Signal Cable
作者:
徐迎辉; 闫智; 罗映红.
兰州交通大学自动化与电气工程学院,甘肃兰州,730070, 兰州交通大学自动化与电气工程学院,甘肃兰州,730070, 兰州交通大学自动化与电气工程学院,甘肃兰州,730070
Author(s):
XU Ying-hui; YAN Zhi; LUO Ying-hong
School of Automation and Electrical Engineering，Lanzhou Jiaotong University，Lanzhou 730070，China
关键词:
雷电流;  耦合;  信号电缆;  接地电阻;  地电位升;  避雷线
Keywords:
lighting current ;  coupling;  signal cable; grounding resistance;  potential rising on earth;  groundwire
分类号:
U228
DOI:
10.3969/j.issn.1671-6833.2013.01.017
文献标志码:
A
摘要:
对雷电流影响信号电缆的途径进行分析,得到雷电流主要通过空间感性耦合与大地阻性耦合干扰信号电缆.根据线路接触网模型,用电磁暂态软件ATPDraw搭建雷击接触网绝缘子闪络雷电流传播仿真电路.研究表明:电缆外皮电流耦合过电压及大地阻性耦合引起的电位升高对信号电缆的影响最大；接触线、贯通地线及保护线中电流耦合到电缆芯线的电压相对较小；信号电缆接地电阻的增大使芯线电压升高.通过降低信号电缆接地电阻、单独设置接地极等措施改善雷击对信号电缆的干扰.参考京沪高速铁路接触网防雷加强实施方案,对复线线路避雷线架设高度进行分析,给出建议架设高度,提高接触网耐雷水平.
Abstract:
The signal cable was interfered by the lightning current mainly via the space inductive coupling andthe earth resistive coupling when we analyzed the way that lightning current acted on the signal cable.Accord-ing to the catenaries model of the route,electromagnetic transient software ATP-Draw was used to establishlightning catenaries insulator flashover lightning current propagation simulation circuit. Studies have shownthat : Cable sheath current coupling led to over voltage and the earth resistive coupling caused the potentialrise, and both factors have the biggest influence on signal cable. While contact line,protection line andthrough ground line current coupled to the cable core voltage is small,signal cable core over voltage along withthe increase of grounding resistance increases. By reducing the signal cable grounding resistance,separate setof earth electrode and other measures to improve the lightning interference on the signal cable. References tocatenary lightning strengthen the implementation program of Beijing-Shanghai high-speed railway; this paperalso analyzes the height of ground wire erected,and gives advice erection height to improve the catenary light-ning withstand level.

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更新日期/Last Update: 1900-01-01