CAJ | 학술논문

运用基于矩量法的电磁分析软件CDEGS建立高速铁路综合接地系统与弱电系统接地耦合模型，并对其雷电流作用下的冲击响应进行仿真计算，分析支柱遭受雷击时，弱电系统与综合接地系统不同距离、不同土壤电阻率和弱电系统与综合接地系统连接情况对弱电系统和贯通地线雷击特性的影响及其规律。研究结果表明：当弱电系统与综合接地系统不连接时，贯通地线的电压几乎不变；当两者连接时，随着两者距离的增大，弱电系统的电压不断减小，贯通地线的电压不断增大。随着土壤电阻率增大，接地系统的电压幅值不断增大；弱电系统与综合接地系统连接时弱电系统电压比未连接时高，贯通地线的电压比未连接时低。同时，分析不同情况下弱电系统的安全距离大小与规律，得出弱电系统的安全距离随着电阻率的增大而增大，且弱电系统与综合接地系统连接时的安全距离比未连接时的大。
운용기우구량법적전자분석연건CDEGS건립고속철로종합접지계통여약전계통접지우합모형，병대기뇌전류작용하적충격향응진행방진계산，분석지주조수뢰격시，약전계통여종합접지계통불동거리、불동토양전조솔화약전계통여종합접지계통련접정황대약전계통화관통지선뢰격특성적영향급기규률。연구결과표명：당약전계통여종합접지계통불련접시，관통지선적전압궤호불변；당량자련접시，수착량자거리적증대，약전계통적전압불단감소，관통지선적전압불단증대。수착토양전조솔증대，접지계통적전압폭치불단증대；약전계통여종합접지계통련접시약전계통전압비미련접시고，관통지선적전압비미련접시저。동시，분석불동정황하약전계통적안전거리대소여규률，득출약전계통적안전거리수착전조솔적증대이증대，차약전계통여종합접지계통련접시적안전거리비미련접시적대。
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.