阻抗匹配平衡变压器运行过程中不平衡电流分析  

作　　者：黄泽文 

机构地区：[1]中国铁路上海局集团有限公司调度所

出　　处：《电气化铁道》2023年第S02期116-118,122,共4页Electric Railway

摘　　要：陇海线邳州牵引所变压器近期频繁产生差流越限告警。通过对邳州牵引所设备参数、差流越限告警报文及保护配置定值等数据的分析,结合具体所亭设备,分析了阻抗匹配平衡变压器在运行过程中不平衡电流产生的原因,即阻抗匹配平衡变压器和电流互感器在工艺参数上产生的固有误差、计算变比与实际变比之间的计算误差等,并提出了减小所亭牵引变不平衡电流、避免频繁差流越限的相关措施。At present,the alarms of out-of-limit of differential current are frequently generated frequently on the transformers of Pizhou traction substation of Lanzhou-Lianyungang railway.Through analyzing the parameters of the traction substation equipment,messages of out-of-limit alarms and protection setting values,with combination of actual equipment of substations and posts,the causes of generating of unbalanced current during operation of impedance-matched balancing transformer are analyzed,that is:the inherent errors generated on the process parameters of impedance-matched balancing transformer and current transformer as well as the calculating errors between calculating ratio and actual ratio are analyzed.The relative measures for reduction of unbalanced current and avoidance of frequent out-of-limit of differential current of traction substations and posts are put forward accordingly.

关 键 词：阻抗匹配平衡变压器 不平衡电流 措施 

分 类 号：U226.7[交通运输工程—道路与铁道工程]