高铁供电系统10kV箱变弧光保护策略研究  

Study on Arc Protection Strategy of 10 kV Container Substation of Power Supply System for High-speed Railway

作　　者：郑晓庆 ZHENG Xiaoqing

机构地区：[1]中国铁路设计集团有限公司

出　　处：《电气化铁道》2023年第1期44-47,共4页Electric Railway

基　　金：中国铁路设计集团有限公司重点课题“铁路智能客站能效管理系统研究”(0100540);中国铁路设计集团有限公司B类课题项目“交通建筑光伏系统并网及相关技术研究”(0101223)。

摘　　要：10 kV箱式变电站是高铁供电系统的基础供电设施,在冲击负荷和谐波作用下,箱变内部存在闪络弧光故障的隐患。目前箱变配置的进线熔断器、变压器温度监控、过流速断和纵联差动保护等,限于其动作原理并不能及时切除因绝缘破坏引起的弧光故障。通过剖析电弧模型及电弧光谱特点,确定了弧光和电流双判据的检测方法,并提出针对郑阜高铁的箱变弧光保护配置策略。经弧光保护装置现场安装和实际运行,证明了该保护装置具有良好的效果。The 10 kV container substation is the basic power supply facility of power supply system for high-speed railway.Under the impact load and harmonic wave,there is a hidden danger of arc fault caused by the flashover inside the container substation.At present,the fuse of incoming line,transformer temperature monitoring,overcurrent breaking and longitudinal differential protection configured in the container substation are not able to timely remove the arc fault caused by insulation damage due to their action principle.By analyzing the arc model and arc spectrum characteristics,the inspection method of arc light and current double criteria is determined,and the configuration strategy of arc light protection for container substations on Zhengzhou-Fuyang high-speed railway is proposed.The arc light protection device has been installed on site and operated in practice,and it is proved that the protection device is effective.

关 键 词：高铁供电系统 弧光故障 双判据 保护配置 

分 类 号：U224.3[交通运输工程—道路与铁道工程]