摘要
针对含静止同步补偿器(Static Synchronous Compensator,STATCOM)的单机无穷大系统的特点,提出了一种新的控制器设计方法。首先建立了考虑发电机汽门调节系统、励磁系统的含STATCOM的单机无穷大系统5阶多变量3输入3输出的非线性数学模型;在此模型的基础上,运用动态逆系统方法完成系统模型的解耦与线性化,构造出3个相互独立的单输入单输出伪线性系统,并应用变结构控制理论分别设计子系统控制器;最后,在MALAB中编写M函数仿真程序,并与在相同数学模型、相同电路参数条件下的最优控制结果相比较。结果显示,提出的控制策略更能有效提高系统的暂态稳定性能,证实了该控制策略的有效性和优越性。
According to the characteristic of single machine infinite bus system with the static synchronous compensator, a new method is proposed to design its controller. First, a 5th order nonlinear mathematical model is developed with three inputs and three outputs, considering the excitation system and the stream valve control system of generator, Second, this model is decoupled and linearized by using the dynamic inverse system theory to obtain three single-input single-output （SISO） pseudo linear systems, and the variable structure control is used to design controllers of pseudo linear system. Finally, M function is used to program in the MATLAB, and compared with the optimal control under the condition of same mathematical model and circuit parameters. The simulative results indicate that the proposed control strategy is superior in enhancing system transient and steady-state performance, and show the feasibility and effectiveness of this control strategy.
出处
《电力科学与工程》
2013年第1期44-50,共7页
Electric Power Science and Engineering
关键词
静止同步补偿器
单机无穷大系统
逆系统原理
变结构控制
static-synchronous-compensator
single machine infinite bus system
inverse system theory
variable structure control
