用MATLAB仿真实现电力系统静态稳定性分析

从影响电力系统静态稳定性的因素展开研究，利用MATLAB软件的优越性．构建了单机一无穷大系统。设计该系统受到一个正阶跃信号的小扰动时，系统处于失稳状态，观察在PSS投入与退出、改变发电机励磁电压和串联电容调压等措施下，发电机功角、转速、电磁功率及机端电压的变化情况。分析结果表明，投入PSS装置和提高发电机励磁电压，可以有效地提高电力系统静态稳定性。

Analysis on Realizing the Static Stability of the Power System by Using MATLAB Simulation

From the impact factors of the power system＇s static stability,and by using the advantages of MATLAB software, this paper constructs the single - infinite system, which is designed that when it is under a small perturbation of a positive phase-step signal, the system will be in a destabilizing state, and observes the variations of the power angle, rotating speed, electro-magnetic power and terminal voltage of the generator under the conditions of the PSS input and exit, and changing the excitation voltage of the generator and the voltage regulation with series capacity. The results show that installing PSS input devices and increasing the excitation voltage can effectively improve power system＇s static stability.