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Fuzzy PI controllers based on particle swarm optimization (PSO) are proposed for four-area interconnected automatic generation control (AGC) system in deregulate environment in this paper. Two kinds of obvious nonlinearities, valve position limits and generation rate constraint (GRC), were concerned. Fuzzy control rules are determined through approved PSO algorithm which avoids falling in local optimum...
The AGC of reheat interconnected two area power systems are characterized by non-linearity and uncertainty. A hybrid neural network and fuzzy control is proposed for automatic generation control in power systems. Recurrent neural network is employed to forecast controller and system's future output, based on the current Area Control Error (ACE) and the predicted change-of-ACE. The Control Performance...
The design of fuzzy logic controllers involves the rationalization of the Fuzzy Inferencing Rules and the appropriate selection of the input and output membership functions. This typically have been achieved by the application of expert knowledge of plant operation and by the appropriate selection of weighting gains. This paper presents the fuzzy logic controller with certain parameters which can...
Since a superconducting magnetic energy storage (SMES) unit with a self-commutated converter is capable of controlling both the active and reactive power simultaneously and quickly, increasing attention has been focused recently on power system stabilization by SMES control. In this study, a self-tuning control scheme for SMES is proposed and applied to automatic generation control (AGC) in power...
Since a superconducting magnetic energy storage (SMES) unit with a self-commutated converter is capable of controlling both the active and reactive power simultaneously and quickly, increasing attention has been focused recently on power system stabilization by SMES control. In this study, a fuzzy gain scheduled supplementary control scheme with SMES unit is proposed and applied to automatic generation...
This paper describes the load frequency control (LFC) of two area interconnected hydro-thermal system using conventional proportional - integral (PI) controller and fuzzy logic controller (FLC). The thermal system is incorporated with governor dead band, generation rate constraint and boiler dynamics. The hydro system is incorporated with generation rate constraint. The conventional PI controller...
With the increase in size and capacity of electric power systems and the growth of widespread interconnections, the problem of power oscillations due to the reduced system damping has become increasingly serious. Since a superconducting magnetic energy storage (SMES) unit with a self-commutated converter is capable of controlling both the active and reactive powers simultaneously and quickly, increasing...
A very important matter of discussion in power system operation is the oscillations damping problem. In this paper the authors propose a fuzzy frequency controller (FFC) to improve the dynamic performance of a single-area power system. This paper represents the implementation of fuzzy frequency controller for an AGC in single-area power system. The aim of the proposed controller is to restore the...
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