摘要
从理论角度分析移动电站电力系统的动态过程,并进行了线性化,将整个过程表示为一个微分方程,通过对该方程的特征根分析,得到在一定条件下系统的总阻尼是守恒的结论,并且分析了不同放大倍数和励磁时间常数时系统的阻尼特性和系统的振荡情况。为了提高移动电站动态稳定性,引入最优励磁控制方式,对线性化的动态系统,求解相应的Riccati方程,得到控制规律,并采用MATLAB仿真电站动态时电压变化,结果表明最优励磁控制方式优于传统励磁控制方式的动态特性。
In this paper the dynamic process of the power system was linearized,what can be expressed as a differential equation.The conclusion that the total damping of the system is the conservation in the condition of some parameters being certain is got,and the system damping features and oscillation is analyzed with different zoom factor and excitation time constant.In order to improve the dynamic stability of the mobile power station,the introduction of the optimal excitation control for the linear dynamic system solves the corresponding Riccati equation and obtains the control law.The matlab is applied to simulate the voltage change in power station dynamic state.The result shows that optimal excitation control method is superior to the traditional excitation control dynamic characteristics.
出处
《国外电子测量技术》
2012年第11期33-37,共5页
Foreign Electronic Measurement Technology
关键词
移动电站
系统线性化
阻尼特性
最优励磁控制
MATLAB仿真
mobile power station
system linearize
damping feature analysis
optimal excitation control
MATLAB simulation
