大型发电机谐振引起的定子接地保护误动原因分析  

Analysis of Resonance-caused Stator Ground Protection Mal-operation of Large Capacity Generator

作　　者：高鹏[1] 梁基重[1] 董乃芬 

机构地区：[1]国网山西省电力公司电力科学研究院,山西太原030001

出　　处：《山西电力》2014年第4期6-8,共3页Shanxi Electric Power

摘　　要：针对山西省内多起大型发电机谐振引起定子接地保护误动的故障,介绍了故障发生时的情况,从发电机中性点消弧线圈挡位选择、发电机出口电压互感器等方面入手,分析了导致发电机定子接地保护误动的原因,最后提出避免大型发电机定子接地保护误动的措施和建议。Focusing on the faults of some large capacity generator stator ground protection mal-operation in Shanxi province,this paper briefly introduces the situations when the faults occurred. It analyses the causes leading to generator stator grounding protection mal-operation from the the aspects including gear selection of arc suppression coil at generator neutral point and voltage transformer at generator outlet.At last,the measures and suggestions for avoiding large capacity generator stator grounding protection mal-operation are put forward.

关 键 词：发电机 定子接地保护 误动 

分 类 号：TM307[电气工程—电机]