永磁直驱风电系统低电压穿越能力仿真  

Simulation and research about low-voltage-ride-through capacity for direct-drive permanent magnet wind power system

作　　者：张友鹏[1] 刘景利[1] 高锋阳[1] 董唯光[1] 

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070

出　　处：《电源技术》2013年第9期1635-1637,1648,共4页Chinese Journal of Power Sources

基　　金：甘肃省科技厅科技支甘项目(1011JKCA172);兰州市科技计划项目(2011-1-106)

摘　　要：为了提高采用双PWM变流器的永磁直驱风电系统的低电压穿越能力,提出了增加直流侧卸荷负载以及电网侧采用静止同步无功补偿器的方法,在MATLAB/SIMULINK仿真环境中建立了系统的仿真模型并针对系统的跌落特性进行了动态仿真。仿真结果表明:系统能够实现最大功率点追踪以及向电网输出接近正弦的优良交流电能;在电网电压跌落时,卸荷负载能够消耗掉多余的能量并且能良好地限制直流侧电压上升,STATCOM能够快速为电网提供无功功率支持。For improving the low-voltage ride through capacity of direct-drive permanent magnet wind power system using the dual PWM inverter, the method of adding unloading load in direct current side and using STATCOM in the grid side was put forward. The simulation model of the wind power system was built in MATLAB/SIMULINK software environment, and dynamic simulations about performance during grid voltage sags were did. The simulation result shows that system can trace the maximum power point and input perfect alternating current to the grid whose shape is close to the sine. When grid voltages sag, dump load can consume redundant power and limit direct current side voltage increasing well, quick reactive power support can be provided by STATCOM to the grid.

关 键 词：直驱风电系统 低电压穿越 卸荷负载 静止同步无功补偿器 

分 类 号：TM315[电气工程—电机]