SIMULINK APPROACH FOR RESTORATION OF RATED FREQUENCY IN INTERCONNECTED POWER SYSTEM AFFECTED BY LOADING USING ANN

The aim of the present work is to obtain restoration of rated frequency in an interconnected power System which has undergone changes due to overloading as well as under loading. For the purpose a Simulink approach has been used wherein the frequency becomes less than rated frequency i.e. 50 Hz during overload conditions, while in the case of under loading it shows values of frequency greater than rated frequency level. The disturbed frequency is restored to normal frequency by reducing the feedback path gain while during under loading feedback path gain is increased to obtain the return of normal rated frequency. In each case the ANN is developed and later trained. After training the ANN provides the necessary feedback path gains for unknown levels of overloadings and under loadings respectively. Eventually the outcomes suggested by ANN were tested on the Simulink for which the Simulink shows the restoration of frequency.