基于浸入与不变原理的电力系统混沌振荡分析与控制

针对电力系统中普遍存在的参数变化引起系统混沌振荡导致系统不稳定问题,提出了一种基于浸入与不变(immersion and invariance,Ⅰ&Ⅰ)原理的自适应反演滑模控制(adaptive backstepping sliding mode control,ABSMC)算法,以提高电力系统运行稳定性.首先,利用电...

Analysis and control of power system chaotic oscillation based on the immersion and invariance principle

Aiming at the problem of system instability caused by system chaotic oscillation due to the ubiquitous parameter changes in power systems, an adaptive backstepping sliding mode control(ABSMC) algorithm based on the principle of the immersion and invariance(Ⅰ&Ⅰ) was proposed to improve power system operation stability. Firstly, the nonlinear model of power system was used to analyze the influence of reactive power change on system dynamic behavior. Secondly, it integrates the principle of Ⅰ&Ⅰ to compensate for the unknown nonlinear term and external disturbance in the system. Disturbance estimation adaptive law was designed. The backstepping principle was used to design the controller, and the Lyapunov stability theory was used to analyze the proposed proof of convergence of the control method. Finally, a numerical simulation experiment was performed on the system. The results show that the proposed method can effectively identify the dynamic disturbance of the system, make all the state variables of the system converge quickly, and improve the response speed of the system.