时滞条件下电力系统动态输出反馈控制器设计研究  

Study on the design of dynamic output feedback controller for power system with time delay

作　　者：李孟杰 Li Mengjie(Foshan Power Supply Bureau of Guangdong Power Grid,Foshan 528200,China)

机构地区：[1]广东电网佛山供电局,广东佛山528000

出　　处：《现代科学仪器》2019年第5期116-119,122,共5页Modern Scientific Instruments

摘　　要：时滞是电力系统中普遍存在的问题,其会影响系统的鲁棒性和运行安全。针对此,文章将结合NCS系统中网络时延的特点,在NCS模型上增设时滞条件,构建包含时滞条件的系统模型;而后,基于变量替换的方法,根据时滞的高维性,运用扩维法通过迭代剔除时滞向,实现了无时滞转换,由此,将时滞电力系统的动态输出反馈控制转换为无时滞系统最优控制序列问题,通过最优控制序列的求解,得出系统反馈的最优控制律,进而设计一种无时滞转化的最优反馈控制器。最后,经由仿真分析,得到了良好的控制效果,验证了控制器设计的有效性。Time delay is a common problem in power system,which will affect the robustness and operation safety of the system.For this reason,this paper will combine the characteristics of network time delay in NCS system,add time delay conditions to NCS model,and build a system model with time delay conditions.Then,based on the method of variable substitution,according to the high-dimensional nature of time delay,use the extended dimension method to eliminate through iteration By solving the optimal control sequence,the optimal control law of system feedback is obtained,and then an optimal feedback controller is designed.Finally,through simulation analysis,good control effect is obtained,and the effectiveness of the controller design is verified.

关 键 词：网络时延 NCS系统 控制时滞 无时滞转换 

分 类 号：TM712[电气工程—电力系统及自动化] TP13[自动化与计算机技术—控制理论与控制工程]