Abstract
A simultaneous study of load frequency control and automatic voltage regulation is considered. The single-area and two-area power systems have been considered with a combined model of AGC and AVR for analysis of frequency and voltage deviation. The primary aspect of the design is to keep real power control as to preserve frequency of the system in a prescribed limit. Reactive power control is used to keep the voltage magnitude of synchronous generator at a tolerable limit. The transients produced in dynamic responses are controlled using intelligent and soft-computing technique. The fuzzy logic controller and particle swarm optimization based PID controllers are considered. The steady state error and settling time of the dynamic responses are observed and found to be reduced very effectively. The frequency and terminal voltage results of a single-area power system with proposed PSO-PID controller is compared to the responses of system with controllers presented in literature and found to be more effective. The comparison of fuzzy logic controller with PSO-PID is done by observing the nature of two-area responses. The result obtained by soft computing algorithm and intelligent controller is analyzed on the basis of settling-time, undershoot and ISE Error.
Highlights
For supplying good and Reliable power to consumer, control of generation is must [1]
The frequency and terminal voltage responses obtained by fuzzy logic controller for a single area system having combined model of AGC and automatic voltage regulation (AVR) is shown in Fig. 5 and Fig. 6
The fuzzy logic controller and particle swarm optimization (PSO) tuned PID controller is implemented for a two area power system having combined model of Automatic Load Frequency Cotrol (ALFC) and AVR
Summary
For supplying good and Reliable power to consumer, control of generation is must [1]. The settling time and overshoot of dynamic responses are reduced by using Tuned PID controller. PI and PID and Fuzzy controller are implemented for two area systems. Mulalidharan and Anbarasi [14], proposed work for controlling Dynamic responses of AGC and AVR. Dabur at el [16], analysis the AGC of interconnected thermal systems with combination of automatic voltage regulation (AVR), design implementation and operation of fuzzy controller is shown. Shyama at el [17], proposed controller which is used for tuning LFC and AVR to maintain system responses at nominal value. In this paper for tuning the PID controller PSO algorithm is used. The tuned PID controller is implemented for minimizing deviation in frequency and Tie-line power responses
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