Load Frequency Control of Interconnected Hydro-Hydro System with Fuzzy Logic Controller

This paper deals with load frequency control or automatic generation control of an interconnected two area hydro-hydro system. The system is incorporated with conventional proportional-integral (PI) and fuzzy logic controller (FLC). Assuming that all areas in a system operate at the same frequency because the traditional approach for interconnection turned out to be unsuccessful for hydro-hydro systems. Time domain simulation is used to study the performance, when a 1% step load disturbance is given in either area of the system. Finally the simulation results of conventional PI controller is compared with fuzzy logic controller and proved that FLC yields better control performance.