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针对单域电力系统,提出了基于等速趋近律的滑模负荷频率控制器设计策略。首先通过矩阵初等变换将原系统转换成标准型,基于标准型设计切换面,利用极点配置选择适当的切换函数,保证系统具有稳定的滑动模态;其次基于等速趋近律设计滑模控制器,使得电力系统状态在有限时间内到达滑模面;最后利用Matlab进行仿真研究,将传统的基于不等式趋近律设计的滑模控制器和提出的基于等速趋近律设计的滑模控制器,分别对理想工作状态下和发电机出力受约束(GRC)情况下的电力系统进行仿真比较,可以看出设计的滑模负荷频率控制器具有较好的频率偏差抑制效果。
For single-domain power system, a design strategy of sliding mode load frequency controller based on equal-speed approach law is proposed. Firstly, the original system is transformed into a standard model by elementary transformation of the matrix, the switching face is designed based on the standard design, and the appropriate switching function is selected by the pole configuration to ensure the system has a stable sliding mode. Second, the sliding mode controller , So that the state of the power system can reach the sliding mode surface in a limited time. Finally, the simulation research based on Matlab is carried out. The traditional sliding mode controller based on the approach of inequality approach and the proposed sliding mode controller The simulation and comparison of the power system under the ideal working condition and the generator output constrained condition (GRC) shows that the designed sliding mode load frequency controller has good frequency deviation suppression effect.