An Improved Result on Stability Analysis of Delayed Load Frequency Control Power Systems

This paper investigates the stability of power systems with load frequency control considering time delays (constant and time-varying delays). A new criterion for ensuring the stability of the system is proposed on the basis of Lyapunov stability theory and a further strengthened inequality. Finally...

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Bibliographic Details
Published inInternational journal of control, automation, and systems Vol. 19; no. 4; pp. 1633 - 1639
Main Authors Jiao, Shiyu, Xia, Jianwei, Wang, Zhen, Chen, Xiangyong, Wang, Jing, Shen, Hao
Format Journal Article
LanguageEnglish
Published Bucheon / Seoul Institute of Control, Robotics and Systems and The Korean Institute of Electrical Engineers 01.04.2021
Springer Nature B.V
제어·로봇·시스템학회
Subjects
Control
Control stability
Control systems
Controllers
Engineering
Frequency control
Mechatronics
Proportional integral
Robotics
Stability analysis
Stability criteria
Time varying control
제어계측공학
Load frequency control
power systems
time delays
proportional-integral controller
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ISSN1598-6446
2005-4092
DOI10.1007/s12555-019-1063-8

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Summary:This paper investigates the stability of power systems with load frequency control considering time delays (constant and time-varying delays). A new criterion for ensuring the stability of the system is proposed on the basis of Lyapunov stability theory and a further strengthened inequality. Finally, taking a single-area load frequency control scheme with the proportional-integral controller as an example, according to the stability criterion obtained, the relationship between the maximum allowable delay and the gain of proportional-integral controller is discussed. Besides, in case studies, the effectiveness of our method is also demonstrated.
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http://link.springer.com/article/10.1007/s12555-019-1063-8
ISSN:1598-6446
2005-4092
DOI:10.1007/s12555-019-1063-8