Design of augmented fuzzy logic power system stabilizers to enhance power systems stability

Journal Article · Fri Mar 01 04:00:00 EST 1996 · IEEE Transactions on Energy Conversion

DOI:https://doi.org/10.1109/60.486582· OSTI ID:248029

Toliyat, H A ^[1]; Sadeh, J; Ghazi, R ^[2]

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1. Texas A and M Univ., College Station, TX (United States). Dept. of Electrical Engineering
2. Ferdowsi Univ. of Mashhad (Iran, Islamic Republic of). Dept. of Electrical Engineering

This paper presents an augmented fuzzy logic power system stabilizer (PSS) for stability enhancement of multimachine power systems. In order to accomplish a satisfactory damping characteristic over a wide range of operating points, speed deviation ({Delta}{omega}) and acceleration ({Delta}{dot {omega}}) of a synchronous generator were taken as the input signals to the fuzzy controller. It is well known that these variables have significant effects on damping the generators shaft mechanical oscillations. A modification of the terminal voltage feedback signal to the excitation system as a function of the accelerating power on the unit, is also used to enhance the stability of the system. The stabilizing signals are computed using the standard fuzzy membership function depending on these variables. The performance of the proposed augmented fuzzy controller is compared to an optimal controller and its effectiveness is demonstrated by a detailed digital computer simulation of a single machine infinite bus and a multimachine power systems.

• OSTI ID: 248029
• Report Number(s): CONF-950727--
• Journal Information: IEEE Transactions on Energy Conversion, Journal Name: IEEE Transactions on Energy Conversion Journal Issue: 1 Vol. 11; ISSN 0885-8969; ISSN ITCNE4
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
FUZZY LOGIC
POWER CONDITIONING CIRCUITS
POWER SYSTEMS
STABILIZATION
VAR CONTROL SYSTEMS