双馈风力发电机定子绕组匝间短路诊断与实验研究  

Stator winding inter-turn short-circuit diagnosis and experimental research on doubly-fed wind generator

作　　者：魏书荣[1] 符杨[1] 马宏忠[2] 

机构地区：[1]上海电力学院电力与自动化工程学院,上海200090 [2]河海大学电气工程学院,江苏南京210098

出　　处：《电力系统保护与控制》2010年第11期25-28,共4页Power System Protection and Control

基　　金：上海市科技攻关计划项目资助(08dz1200600);上海市教育委员会重点学科建设项目资助(J51301)

摘　　要：当双馈风力发电机定子绕组发生轻微匝间短路时,三相定子电流的时域波形变化比较微小,而三相电流Park’矢量轨迹随着故障变化明显。对双馈电机采用多回路理论进行仿真,并进行动模实验测试,得出了正常及匝间故障情况下的Park’矢量轨迹,通过对Park’矢量轨迹的形状和椭圆环的宽度比较来确定是否短路并估计匝间短路的严重程度。When occurrence of doubly-fed wind generator stator winding slight inter-turn short circuit,the three-phase stator current changes very little,but the Park＇vector figure of three-phase stator current has obvious changes in fault.The paper simulates doubly-fed machine based on multi-loop theory and makes test mode of action to draw the Park＇vector figure between normal and inter-turn short circuit conditions.Through the shape and the width of comparison of the Park＇vector track,this paper determines whether it has inter-turn short circuit or not and estimates the severity of short-circuit.

关 键 词：双馈电机 定子绕组 匝间短路 Park’矢量轨迹 实验研究 

分 类 号：TM315[电气工程—电机]