中文摘要：

通过将异步化同步发电机（asynchronized generator，ASG）实用4阶模型在工作点处线性化，导出含ASG电力系统的小扰动线性化模型。考虑负荷水平及发电机停运容量的不确定性，应用蒙特卡罗概率仿真方法分析含ASG电力系统的小扰动功角稳定性。以WECC3机9节点系统为原型，仿真分析仅有常规同步发电机、仅有ASG以及混合多机系统的小扰动功角稳定性，由此验证所提模型和方法的有效性。仿真结果表明，应用ASG并结合适当的励磁控制策略可以降低系统小扰动功角失稳概率，从而改善系统小扰动功角稳定性。

英文摘要：

The 4th-order linearized model of asynchronized generator （ASG） was presented for small disturbance stability analysis of multi-machine power systems including ASGs. Probabilistic small disturbance rotor angle stability analysis based on Monte Carlo simulation was carried out on account of uncertainties in load levels and generator outage capacities. The WECC 3-machine 9-bus benchmark system was modified to test the feasibility of the proposed linearized model and probabilistic method to the three kinds of systems, i.e., synchronous-generator-only systems, ASG-only systems, and systems including synchronous and asynchronized generators. Simulation results demonstrated that ASGs with proper excitation control could reduce the probability of loss of small disturbance rotor angle stability and improve the overall small disturbance performance of the power systems.