考虑主、漏磁路饱和的双馈风电低电压穿越动态性能分析  

Analysis on Dynamic Performance of Low Voltage Ride-Through of Doubly Fed Induction Generator Considering Main Flux Saturation and Leakage Flux Saturation

作　　者：张文娟[1] 高勇[2] 

机构地区：[1]宝鸡文理学院电子电气工程系,陕西省宝鸡市721007 [2]西安理工大学自动化与信息工程学院,陕西省西安市710048

出　　处：《电网技术》2013年第7期1995-1999,共5页Power System Technology

基　　金：国家自然科学基金项目(51207002);陕西省科技计划工业攻关资助项目(2013K07-12);宝鸡文理学院重点科研计划项目(ZK11068);陕西省教育厅科学研究计划项目(2013JK1017)的资助~~

摘　　要：由于双馈感应电机主磁路及漏磁路饱和因素的影响,传统线性模型已不能准确模拟低电压穿越响应特性。为此,通过推导同步旋转坐标系下考虑主磁路及漏磁路饱和的双馈电机状态方程,研究了双馈电机阻尼系数与主、漏磁路饱和的关系,讨论了电网发生三相短路故障时,主、漏磁路饱和对定转子暂态磁链衰减过程的影响。Matlab/Simulink仿真结果验证了理论分析的正确性。Due to the impacts of main flux saturation and leakage flux saturation of doubly fed induction generator（DFIG）,its traditional linear model cannot accurately simulate the response characteristics of low voltage ride-thorough（LVRT）.Through deriving state equation of DFIG under main flux saturation and leakage flux saturation in synchronous rotating reference frame,the relationship between damping coefficient of DFIG and main flux saturation and that between damping coefficient of DFIG and leakage flux saturation are researched;and the impacts of main flux saturation and leakage flux saturation on transient magnetic linkage attenuation process in stator and rotor of DFIG are discussed while three-phase short-circuit fault occurs at the position where the DFIG is connected to power grid.The correctness of theoretical analysis is verified by results of Matlab/Simulink simulation.

关 键 词：双馈感应电机 低电压穿越 主磁路饱和 漏磁路饱和 动态响应 

分 类 号：TM614[电气工程—电力系统及自动化] TM921