摘要
通过建立简单电力系统的机电统一系统状态空间方程， 采用特征根分析法对系统中的次同步谐振进行了分析。通过求出相应的特征根以及特征根灵敏度，分析了系统中输电线路的补偿度与发电机动态行为之间的关系。在实现上， 提出了直接采用高级编程语言ＭＡＴＬＡＢ的程序设计方法。结果表明：在单机无穷大系统中，发电机转子角变化的大小和转速变化的大小受线路补偿度的影响都很大。另外，在对次同步谐振进行特征根分析时利用ＭＡＴＬＡＢ作为开发工具，可以大大简化程序代码， 方便地实现所需的功能，
The unified electromechanical state-space equations of a simple power system are formulated to study the subsynchronous resonance in the power system in this paper. And based on the above model, the eigenvalue analysis is executed on the system to get more information such as eigenvalue sensitivities and so on. The relationship between the compensation coefficient and the dynamic behavior of system is also analyzed. MATLAB is used as a development tool .The results show that the compensation level has a significant effect on the variation of rotor angle and speed. By using MATLAB, the code can be greatly simplified, the required functions can be easily obtained and the develoment efficiency can be raised .
出处
《现代电力》
1999年第4期38-42,共5页
Modern Electric Power
