Z型联结组别接地变低压核相异常分析  

Analysis of Abnormal Low-voltage Phase Check Situation of Z-type Grounding Transformer

作　　者：苏展 于绍峰 王洋 SU Zhan;YU Shao-feng;WANG Yang(State Grid Qingdao power supply company,Qingdao 266011,China)

机构地区：[1]国网青岛供电公司,山东青岛266011

出　　处：《变压器》2021年第10期30-33,共4页Transformer

摘　　要：本文通过某变电站接地变投运核相实例,从理论上分析了接地变高压侧错误接线对低压侧电压相位关系的影响,分析总结出接地变高压侧各类错误接线场景下低压侧核相结果,为现场快速判断核相结果正确性、查找原因、解决问题提供参考及方案,并通过PSCAD仿真验证了结论的正确性。The influence of the wrong wiring on the high-voltage side of the grounding transformer on the phase relationship of the low-voltage side is analyzedin theory through the nuclear phase example ofthe grounding transformer in a substation.The results of the low-voltage side nuclear phase wereanalyzed furtherunder all kinds of wrong wiring scenarios on the grounding high-voltage side,andproviding referencefor judging the correctness of nuclear phase resultsand guidance for finding the causeand solving problems quickly.Finally,the correctness of the conclusion is verified by PSCAD simulation.

关 键 词：接地变 Z型联结组别 仿真验证 

分 类 号：TM401.1[电气工程—电器]