Modelling and performance analysis of PID power system stabilizer using adaptation law in Simulink environment

In this paper, a self tuning Proportional Integral Derivative (PID) with PSS controller is presented for improving stability of a system in simulink environment. The development of a PID with power system stabilizer in order to maintain stability and enhance the performance of a power system is described widely. The application of the PID with PSS controller is investigated by means of simulation studies on a single machine infinite bus system. The functional blocks of PID with PSS are developed in Simulink and simulation studies are carried out. A study case for the validation of the proposed simulink mechanism is presented and analysed with control application for a synchronous generator excitation system. The superior performance of this stabilizer in comparison to PSS proves the efficiency of this new PID with PSS controller. The comparison studies carried out for various results such as speed deviation, field voltage, rotor angle and load angle in Simulink based MATLAB environment.