Abstract
This paper solves the load frequency control problem and proposes a new event-triggered sliding-mode control (SMC) algorithm in multi-area interconnected power systems. First, we consider a three-area interconnected power system, and construct its corresponding mathematical model. The prescribed H∞, or energy-to-energy, performance is utilized to test the effectiveness of the corresponding disturbance attenuation. Then, an appropriate discrete-time integral switching surface is designed for each subsystem, and the discontinuous controller is designed to guarantee the resulting subsystem asymptotically stable and robust. Using time-delay system analysis technique, the event-triggered scheme, sliding mode dynamics, and the network-induced delays are converted into a network dynamic system with time-varying delays. Thus, corresponding sufficient conditions are derived and an event-triggered SMC law for reaching motion is designed to ensure the reachability of the sliding mode surface in a finite time. Finally, examples and simulations are provided to illustrate the feasibility and the effectiveness of the developed event-triggered SMC scheme.
| Original language | English |
|---|---|
| Pages (from-to) | 6732-6741 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 64 |
| Issue number | 8 |
| Early online date | 2 Mar 2017 |
| DOIs | |
| Publication status | Published - Aug 2017 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 1982-2012 IEEE.
Funding
This work was supported in part by the National Natural Science Foundation of China under Grant 61403048, in part by the Natural Science Foundation of Chongqing, China, under Grant cstc2015jcyjA40005, and in part by the Fundamental Research Funds for the Central Universities under Grant 1106112016CD-JZR175509 and Grant 106112015CDJXY170001.
Keywords
- Event-triggered strategy
- load frequency control (LFC)
- multi-area power systems
- sliding-mode control (SMC)