Abstract

Load frequency controllers are required to operate effectively under increasingly restrictive conditions. These include highly varying random fluctuations in power demand which changes the operating point of the power system, in turn resulting in parametric changes and uncertainties in the power system. The frequency and tie line power deviations need to be regulated in minimum time within narrow limits. The paper present analysis on dynamic performance of Load Frequency Control (LFC) of three area interconnected thermal – thermal –hydro power system by the use of Fuzzy Intelligence. In the proposed scheme, control methodology is Fuzzy Logic Control for three area interconnected thermal power system. In this proposed scheme three fuzzy logic controllers for each area is implemented to get zero frequency deviations. The dynamic model of the power system and the controller design are elaborated in the paper. The controller performances are simulated using MATLAB/SIMULINK simulation software. Fuzzy Logic Controller is Rule based which depends upon various inputs. It provides better performance and efficiency. Simulation is done using three Controllers for different inputs in MA TLAB\SIMULINK software.