汽轮发电机转子绕组匝间短路时的电磁场分析  

Analysis on Electromagnetic Field of Rotor Winding Inter Turn Short Circuits in Generator

作　　者：樊静[1] 李俊卿[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《电力科学与工程》2010年第3期10-13,共4页Electric Power Science and Engineering

基　　金：河北省自然科学基金(08B005);华北电力大学博士研究生创新资助计划

摘　　要：汽轮发电机发生转子绕组匝间短路时,其电磁特性和相关电气量会发生变化,基于这一特点,提出将有限元法用于汽轮发电机转子绕组匝间短路故障研究,并运用有限元程序对汽轮发电机正常情况及转子绕组匝间短路故障后磁场分布进行了仿真计算,通过分析比较故障前后磁场分布及气隙等效磁通密度分布,找出故障特征,为进一步分析转子绕组匝间短路故障机理奠定了基础。When rotor winding inter turn short circuits happens in turbine generators, its electromagnetic characteristic and the related electrical parameters will change. Based on this characteristic, the finite element method was proposed to be used for rotor winding inter-turn short circuits fault in turbine generator, the electromagnetic field distribution maps were obtained by the finite element procedure. Through the comparison of the electromagnetic field distribution under normal and fault conditions, the fault features of rotor winding inter turn short circuits can be identified. The foundation for further analvsis of rotor windinz inter turn short circuits fauh was laid.

关 键 词：汽轮发电机 匝间短路 电磁场 有限元 

分 类 号：TM301.4[电气工程—电机]