Damping of low-frequency oscillations and improving power system stability via auto-tuned PI stabilizer using Takagi-Sugeno fuzzy logic
Document Type
Article
Publication Date
1-1-2012
Abstract
This paper proposes a Takagi-Sugeno (TS) fuzzy gain-scheduling PI stabilizer to damp the power system low-frequency oscillations and enhance power system stability. The work describes the construction of appropriate fuzzy membership functions and rules for a Power System Stabilizer (PSS) so that its proportional and integral gains can be automatically tuned in real-time to react to changes in the system operating conditions. To find the optimal number and locations of required stabilizers, this paper uses the participation factor method. Simulation results on a practical power system demonstrate that the proposed stabilizer is effective in damping low-frequency oscillations as well as improving system dynamic stability and voltage profile. In addition, the proposed approach provides superior performance when compared to a conventional PI PSS. © 2011 Elsevier Ltd. All rights reserved.
Keywords
Low-frequency oscillations, Power system modeling, Power system stability, PSS, Takagi-sugeno fuzzy system, Low-frequency oscillations, Power system modeling, Power system stability, PSS, Takagi Sugeno fuzzy systems, Damping, System stability
Divisions
fac_eng
Publication Title
International Journal of Electrical Power & Energy Systems
Volume
38
Issue
1
Publisher
Elsevier