Delay-dependent robust stability analysis of power systems with PID controller

被引：12
作者：
Shen L. [1 ]
Xiao H. [1 ]
机构：
[1] School of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou
来源：
Chinese Journal of Electrical Engineering | 2019年 / 5卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Load frequency control; PID control; Power systems; Robust stability; Time delay systems;
D O I：
10.23919/CJEE.2019.000014
中图分类号：
学科分类号：
摘要：
This study examines the robust stability of a power system, which is based on proportional-integral-derivative load frequency control and involves uncertain parameters and time delays. The model of the system is firstly established, following which the system is transformed into a closed-loop system with feedback control. On this basis, a new augmented Lyapunov-Krasovskii (LK) functional is established for using the new Bessel-Legendre inequality to estimate the derivative of the functional, which can provide a maximum lower bound. A stability criterion is then derived by employing the LK functional and Bessel-Legendre inequality. Finally, numerical examples are used to demonstrate the validity and superiority of the proposed method. © 2019 IEEE. All rights reserved.
引用
收藏
页码：79 / 86
页数：7
相关论文
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