Damping Electromechanical Oscillations using Remote Signal Fed STATCOM

Abstract

This paper investigates the effects of Static Synchronous Shunt Compensator (STATCOM) on electromechanical oscillations damping in a wide area network of power system. It focuses on the use of STATCOM and Phasor Measurement Units (PMU) to damp generators speed deviations and bus voltage profile improvement. The network performances were evaluated without and with the remote centre called Power Oscillation Damper (PDC) serving as input to STATCOM in enhancing the system stability. The placement of STATCOM and the location of PDC was achieved using Genetic Algorithm (GA). The case study was mathematically modelled using system parameters in Power System Analysis Toolbox (PSAT) environment where most of the simulations were carried out. Finally, the overall performance of the network was evaluated by nonlinear simulations, and results obtained showed the effectiveness of the use of remote inputs in improving the dynamic stability of the system and provided better damping to the power swings.