铁道科学与工程学报Issue(6)：62-67,6.
高速铁路路基段弱电设备单独接地的可行性研究
Feasibility study on the separate grounding of weak current equipment of the high-speed railway roadbed section
摘要
Abstract
This paper is based on CDEGS software to establish the coupling model of integrated grounding system and weak current grounding system of the high-speed railway,simulate and calculate the impulse response un-der the action of lightning current.When the pillar was striken by lightning,the lightning characteristics and the influencing rules of the weak current system and the wire through earth were analyzed under different distances between the weak current system and integrated grounding system,different soil resistivity and different connec-tion conditions of the weak current system and integrated grounding system.The results show that,when the weak current system and integrated grounding system are not connected,the voltage of the wire through earth is almost the same;while when they are connected,with the increase of the distance,the voltage of weak current system is decreasing,and the voltage of the wire through earth tends to increase.The voltage amplitude of grounding system is increasing with the increase of soil resistivity.The voltage of weak current system when the weak current system and integrated grounding system are connected is higher than that without connection,but the voltage of the wire through earth is lower than that with the absence of connection.At the same time,the pa-per analyzed the safety distance of the weak current system under different conditions,from which the conclusions can be reached that the safety distance of the weak current system is increasing with the increase of resistivity, and the safe distance when the weak current system is connected to the integrated grounding system is higher than that without connection.关键词
高速铁路/弱电设备/接地/CDEGSKey words
high-speed railway/weak current equipment/grounding/CDEGS分类
交通工程引用本文复制引用
罗勋,黄渤,张先怡,吴广宁,曹晓斌..高速铁路路基段弱电设备单独接地的可行性研究[J].铁道科学与工程学报,2014,(6):62-67,6.基金项目
铁道部科技计划资助项目 （）
