双馈风力发电机在不同电网故障下的动态响应仿真研究  

Simulation Study on Dynamic Response of Doubly Fed Induction Generators During System Voltage Sag Caused by Power Grid Faults

作　　者：王晓兰[1] 孙万义[1] 

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃省兰州市730050

出　　处：《电网技术》2010年第8期170-175,共6页Power System Technology

基　　金：国家自然科学基金项目(50967001)~~

摘　　要：为更好地研究风力发电机在一定的电网电压骤降故障下的动态响应,以单台1.5MW双馈风力发电机(doubly-fed wind turbine,DFIG)为研究对象,参考美国风能协会制定的风力机组低电压穿越(low-voltage ride through,LVRT)标准,通过构建不同的电网电压骤降仿真模型,分别对机端电压、电流、转子电流、输出的有功功率和无功功率、直流侧电压、电磁转矩在故障期间的动态响应进行了仿真。通过比较几种典型故障下各个变量不同的变化程度,探讨了相应的控制策略,为进一步研究低电压穿越标准下的控制策略提供了依据。To research the dynamic response of wind power generation unit under certain grid voltage sag in depth, taking single doubly-fed induction generator （DFIGs） with capacity of 1.5 MW as research object and referring to the standard of low-voltage ride through （LVRT） drifted by American Wind Energy Association （AMEN）, by means of building different simulation models of grid voltage sag, the dynamic responses of terminal voltage, stator current, rotor current, active power output and reactive power output, voltage at DC side and electromagnetic torque during the fault are simulated respectively. Through comparing the variations of these variables under several typical faults, corresponding control strategies, which are available for reference to further research on control strategy based on the standard of LVRT, are investigated.

关 键 词：风力发电 双馈风力发电机 低电压穿越 电压骤降 动态响应 

分 类 号：TM614[电气工程—电力系统及自动化]