Fault Ride-Through Study of Wind Turbines
Fault Ride-Through Study of Wind Turbines
复制标题
风力发电机故障穿越研究
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
C. Yun
中科院分区：
文献类型：
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作者：
Xinyan Zhang;Xuan Cao;Weiqing Wang;C. Yun
风能的安装在世界各地迅速增加。风电电网规范要求风电机组具有故障（或低压）穿越能力。为了研究风电场的FRT运行，讨论了三种方法。首先，通过引入转子侧保护电路，对双馈异步发电机的转子短路进行了限制。其次，直流母线电压受到直流吸能电路的限制。第三，利用STATCOM提高风电场的低电平电压。在MATLAB下进行了仿真研究，给出了相应的结果并进行了讨论。本文提出的方法可以在一定程度上限制转子短路电流和直流电压，但故障时对电力系统的电压支撑很大程度上取决于STATCOM的安装位置。
The installation of wind energy has increased rapidly around the world. The grid codes about the wind energy require wind turbine (WT) has the ability of fault (or low voltage) ride-through (FRT). To study the FRT operation of the wind farms, three methods were discussed. First, the rotor short current of doubly-fed induction generator (DFIG) was limited by introducing a rotor side protection circuit. Second, the voltage of DC bus was limited by a DC energy absorb circuit. Third, STATCOM was used to increase the low level voltages of the wind farm. Simulation under MATLAB was studied and the corresponding results were given and discussed. The methods proposed in this paper can limit the rotor short current and the DC voltage of the DFIG WT to some degree, but the voltage support to the power system during the fault largely depend on the installation place of STATCOM.