Performance Comparison of Various Classical Controllers in LFC of Hydro-Thermal Power System with Time Delays

This paper presents the application of an artificial electric field algorithm (AEFA) optimized classical PID plus double derivative (DD) gain (PIDD) for load frequency control (LFC). Two-area realistic hydro thermal (TARHT) power system is considered and an investigation is carried out by subjugating the disturbance of 10% step load on area-1 (10%SLD). Efficacy of AEFA tuned PIDD is revealed with other classical PI and PID regulator performances. TARHT is analyzed for the conditions with and without deliberating the constraint of time delays (TDs). Simulation results reveal the predominance of TDs on TARHT system performance and the importance of its consideration is accentuated.