INTELLIGENT TECHNIQUES FOR ENHANCEMENT OF SMALL SIGNAL ROTOR ANGLE STABILTY

Abstract

The utilisation of power system stabilizers (PSS) has developed gigantically customary in living up to expectations of huge electric power systems. Nonetheless, it was difficult to create a stabilizer that would exist with capability to perform in every single working purpose of electric power systems. With a soal aim to cover all the possible range of working conditions, Fuzzy logic has been prescribed the conceivable response to control this complication, by use of linguistic data and evading a complex structure mathematical model. In this theme, a step wise resemble to fuzzy logic and PID controller object is suggested. This theme presents a comparative study of, without use of PSS and conventional PSSi along with the use of Fuzzy and PID control techniques for solidness heightening of a single machine infinite bus system. With a soul objective to get the stability heightening, precise speed deviation Δω and acceleration of the rotor synchronous generator taken as inputs to fuzzy logic controller while only speed deviation Δω has been used as input for PID control and conventional PSS. These variables have given significant outcome on damping out the mechanical oscillations created by generator shaft. Relying on these inconstants the stabilized signals were find out using the function of fuzzy membership and also by using PID controller. The values of , , are found out using trial and error method. The fuzzy controller used has been compared with different overlapping of the membership function. Simulink has been used in matlab-10 for block designing of above.