Damping of low-frequency oscillations and improving power system stability via auto-tuned PI stabilizer using Takagi-Sugeno fuzzy logic

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• 作者：Lokman H. Hassan^a ; ^{lokmanhadi@siswa.um.edu.my} ; ^{lokmanhadi@gmail.com} ; M. Moghavvemi^a ; Haider A.F. Almurib^b ; K.M. Muttaqi^c ; H. Du^c
• 关键词：PSS ; Low-frequency oscillations ; Takagi&ndash ; Sugeno fuzzy system ; Power system modeling ; Power system stability
• 刊名：International Journal of Electrical Power and Energy Systems
• 出版年：2012
• 期刊代码：77_01420615
• 类别：et
• 出版时间：June, 2012
• 卷：38
• 期：1
• 页码：72-83
• 文件大小：1879 K

摘要

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.