Dynamic Voltage Stabilization by Excitation Control: an Industrial Area Study System

Large industrial loads such as induction motor at heavy loading conditions may cause undamped electromechanical modes and collapse of load-voltage. This manuscript presents a synthesis method of a power system stabilizer (PSS), which offers an extra stabilizing signal to the excitation channel, to prevent voltage instability in a single machine power system. Modal analysis is used in the design to study small disturbance stability. The dynamic stability enhancement of a power system with induction motor load by the excitation control is presented in this paper. The suggested controller is tested by simulations on a benchmark power system of Al-Rusail industrial area, Oman.