低压侧两相短路变压器高压侧的电流关系研究  

Current Relationship on the Transformer High Voltage Side Under Two-phase Short-circuit on the Low Voltage Side

作　　者：王松 潘月月 WANG Song;PANYueyue(Operation and Maintenance Production Department,Weifang CGN Energy Co.,Ltd.,Weifang 262114,China;School of Civil Engineering and Transportation,Weifang University,Weifang 261061,China)

机构地区：[1]潍坊中广核能源有限公司运维生产部,山东潍坊262114 [2]潍坊学院土木与交通学院,山东潍坊261061

出　　处：《电工技术》2025年第5期25-28,33,共5页Electric Engineering

基　　金：潍坊学院博士科研启动基金项目(编号2019BS16)。

摘　　要：变压器一侧两相短路是变压器故障中最危险的一种情况,严重时会影响整个电力系统的稳定性和可靠性。为了进一步确定变压器一侧两相短路时另一侧三相电流之间的关系,采用对称分量法进行了推导分析,分别获得了在连接组别为Yndl1和Yyn0的变压器上,低压侧任意两相短路时高压侧三相电流的相互关系。研究结果总结了变压器一侧两相短路故障时的故障波形,可为电力从业人员进行故障分析提供参考。Two-phase short-circuit on one side of transformer is one of the most dangerous transformer faults,which will affect the stability and reliability of the whole power system.In order to determine the relationship between the threephase current on the other side of the transformer furtherly when the two-phase short-circuit occurs on one side of the transformer,the symmetric component method is used to derive and analyze the relationship between the three-phase current on the high-voltage side when any two-phase short-circuit occurs on the low-voltage side of the transformer connected with Yndll and Yyno respectively.The above results summarize the fault waveform of two-phase short-circuit fault on one side of transformer,which can provide reference for the fault analysis of power practitioners.

关 键 词：变压器 两相短路 对称分量法 电流关系 

分 类 号：TM314[电气工程—电机]