同步发电机励磁系统对电力系统稳定性影响的仿真与分析

Simulation and Analysis of the Influence of Synchronous Generator Excitation System on Power System Stability

同步机励磁系统在电力系统稳定运行中发挥着十分重要的作用。在此基础上,推导了一种典型同步发电机励磁系统的传递函数模型,并基于阶跃响应曲线和奈奎斯特曲线对励磁控制系统的响应特性进行了分析。应用图形接口模拟励磁系统对电力系统暂态稳定性和动态稳定性的影响。模拟结果表明,电力系统的稳定性依赖于励磁系统的性能,仿真结果可供选择励磁系统和进行性能分析时参考。

Synchronous machine excitation system plays a very important role in the stable operation of power system.On this basis,the transfer function model of a typical synchronous generator excitation system is derived,and the response characteristics of the excitation control system are analyzed based on the step response curve and Nyquist curve.Graphical interface is used to simulate the influence of excitation system on transient stability and dynamic stability of power system;The simulation results show that the stability of the power system depends on the performance of the excitation system.The simulation results can be used as a reference for the selection of excitation system and performance analysis.