某新建110 kV变电站核相分析  

Analysis of Phase Check of Station Transformers in a Newly-built 110 kV Substation

作　　者：雷莉 LEI Li(Guangdong Jianfeng Electric Power Engineering Co.,Ltd.,Guangzhou 510080,China)

机构地区：[1]广州尖峰电力设计院有限公司,广东广州510080

出　　处：《电工技术》2020年第5期81-83,89,共4页Electric Engineering

摘　　要：针对某110 kV变电站内两台站用变二次侧核相时,同相电压差值等于相电压的异常情况,从变压器的联结组别,YN,Yn0,d11及YN,Yn0型变压器各绕组间的向量关系,Z型接地变的结构特点和ZN,Yn11接地变兼站用变各绕组间的向量关系入手进行理论分析,并通过ATP仿真计算得出了与理论分析一致的结论。In view of the abnormal situation that the difference between the in-phase voltages equals the phase voltage during the phase check of the secondary side of two station transformers of a 110 kV substation,the theoretical analysis is carried out from the connection groups of transformers,the vector relations among windings of YN,Yn0,d11 and YN,Yn0 transformers,the structural characteristics of Z-type grounding transformer and the vector relations between windings of ZN,Yn11 grounding transformer and station transformer.The conclusion is consistent with the theoretical analysis through ATP simulation calculation.

关 键 词：变压器 接地变 联结组别 相位差 ATP 

分 类 号：TM407[电气工程—电器]