基于Matlab的双机系统暂态稳定性仿真与分析

Transient Stability Simulation and Analysis of a Double-machine System based on Matlab

本文介绍了电力系统的暂态稳定性、Matlab环境下Simulink动态仿真工具、BPA。利用Matlab电力系统仿真模块构建了双机系统的Simulink模型,当该系统受到一个大的扰动时,观察发电机功角、转速的变化情况。最后通过BPA软件再次仿真该系统,验证了Matlab仿真结果的正确性。分析表明,该模型能较准确直观地考察暂态过程中电力系统的动态特性。同时,仿真结果也表明双机系统的暂态稳定性比较差。

The transient stability of power system, Simulink dynamic simulation tool based on Matlab and BPA are introduced in the paper. SimPowerSystem based on Matlab is used to build up Simulink models of a double-machine system. We observe how the rotor speed and angle of generator vary when the system suffer from a big disturbance. Then the system is simulated again by BPA, so that it can verify the accuracy of result. The result shows that the dynamic behavior of power system during transient processes can be observed quite accurately and directly. At the same time, it indicates that the transient stability of a double-machine system is worse than others.