中文摘要：

本文研究了大规模双馈风电接入对东北电网稳定性的影响。分析了双馈风机的有功暂态特性，对比计算了吉林松白地区风电火电组合模式、风场接入方式以及风电无功控制方式不同情况下的断面极限功率。指出了风场集中接入的方式和风机恒功率因数控制方式不利于电网安全稳定的原因所在，分析了风电接入影响电网功角稳定性的有利因素和不利因素。认为在故障切除时间很短且风场采用恒电压控制的情况下，随着风电比例的增大，系统的功角稳定性增强。

英文摘要：

The paper analyzes the impact of large-scale DFIG based wind power on Northeast Power Grid＇ s stabili ty. Firstly, the paper discusses the dynamic characteristics of doubly-fed induction generator （DFIG）, and com pares it with synchronous generator （SG）. Then the stability limit for power transfer out of Songbai area is com-pared as an index of stability, considering different combination of wind and thermal generation, different connec tion way of the wind farm and different reactive power control mode of DFIG. Furthermore, it points out the reason why the centralized access way of wind power and unit power factor control mode of DFIG will deteriorate the power system stability. Besides, the advantage and disadvantage effect of the grid-connected wind farm on the power sys tem rotor angle stability is pointed out. And it concludes that if the fault clearing time is very short, the rotor angle stability of the power system will be enhanced as the proportion of wind power increases.