Improving stability in power system network using tuned controller

Abstract

The main purpose of engineers is to increase the capacity of transferred power in the power system. Power system getting pretentious by momentary change in voltage and current that creates swings and instability in the synchronous machine. Here paper represents formulation and simulation of single machine infinite bus system (SMIB) and also deals with four area ten bus system which contains four generators. Power system stabilizers are connected to excitation systems for improving the damping during low frequency fluctuations. Power system stabilizer will create an additional signal which is supplied to excitation system so that it will damp out the fluctuations. In order to improve stability, the performance of the proposed HS-PSS controller, a time domain performance criterion function was also defined compared with genetic algorithm (GA), the proposed method was indeed more efficient and robust in improving stability of power system network.