AGC and AVR implementation in a deregulated power system using optimized controller with Renewable integrated DC link

This paper deals with automatic generation control (AGC) and Automatic voltage regulator (AVR) in a two-area interconnected deregulated power system with and without direct current (DC) link. Now a day, increase in generation from renewable energy sources (RES) in an integrated power system is keep on increasing significantly. This present work describes a system dynamic model, with thermal generating sources and RES (Solar and wind Power model) for studying the AGC and AVR of system. The secondary controller in the AGC loop is optimally designed and compared by considering the Proportional integral (PI), Proportional integral derivative (PID) and Fuzzy logic controller (FLC). The results show that the FLC with DC link gives the better results as compared with other two controllers. The simulation result reveals that FLC gives better performance with respect to number of overshoots, settling time, peak deviations, and oscillations in both constant and variable distributed participation matrix. All the control strategies are implemented and the simulation results are showed using MATLAB/Simulink.