中文摘要：

研究了基于时域仿真法的单机-无穷大电力系统的暂态稳定性,建立了单机-无穷大电力系统的数学仿真模型,并进行了仿真分析。研究揭示了电力系统暂态稳定性和相关参数之间的影响关系。仿真结果表明：同步发电机的阻尼系数越大,故障切除时间就越短,电力系统就越稳定;相反,同步发电机的惯量越大,电力系统达到稳定的时间就越长。因此,随着对发电机实行强行励磁,改善了系统的稳定性。仿真结果可为如何提高和改善电力系统暂态稳定性提供了理论依据。

英文摘要：

The transient stability of the single-machine and infinite power system was studied based on the time domain simulation method, and the mathematical simulation model of the single-machine and infinite power system was established also. And then, the simulation and analysis were conducted, and the relationship of the transient stability of the power system and relevant parameters was revealed. The simulation results showed： the greater the damping coefficient of the synchronous generator was, the shorter the fault clearing duration was, and the more stable the power system was; otherwise, the greater the inertia of the synchronous generator was, the longer the duration that the power system reached the stable state was. Therefore, with the forced excitation of the generator, the stability of the system improved. The simulation results offered theoretical reference for improving the transient stability of the power system.