摘要
大功率高速动车组密集开行,与牵引供电系统之间引起的车-网耦合匹配问题愈发凸显。牵引供电系统作为高速铁路的唯一动力来源,车-网耦合系统的匹配性直接关系运行安全和质量。采用车-网同步测试方法,研究动车组牵引负荷特性变化规律,分析牵引负荷对牵引变电所馈线出口处等效测量阻抗的影响,探究牵引变电所馈线保护阻抗Ⅰ段误动的原因,为车-网耦合系统优化设计提供重要参考。
With intensive operation of large-power high-speed EMUs,the matching problem of the vehicle-OCS coupling between EMUs and traction feeding system becomes prominent.The traction feeding system is the sole power source of high speed railways.Matching of the vehicle-OCS coupling system is directly related to operation safety and quality.With the vehicle-OCS synchronous test method,the change rules of traction load characteristics of EMUs were studied,the impact of traction load on equivalent measured impedance at the feeder outlet of the traction substation was analyzed,and the reasons of misoperation of impedance section I of feeder protection in the traction substation were explored,providing an important reference for optimal design of the vehicle-OCS coupling system.
作者
王双全
于海顺
刘晓华
WANG Shuangquan;YU Haishun;LIU Xiaohua(CRRC Qingdao Sifang Co Ltd,Qingdao Shandong 266000,China)
出处
《中国铁路》
2020年第8期55-59,共5页
China Railway
关键词
高速动车组
牵引供电
馈线保护误动
车-网同步测试
车-网耦合
high-speed EMU
traction feeding
misoperation of feeder protection
vehicle-OCS synchronous test
vehicle-OCS coupling
