A. Saidian - Shahid Chamran University, Ahvaz, Iran
D. Mirabbasi - Shahid Chamran University, Ahvaz, Iran
M. Heidari - Shahid Chamran University, Ahvaz, Iran

This paper investigates the effect of the Distributed Generation (DG) and its size on voltage flicker and voltage sag which is considered recently as urgent power quality problems that can affect motor starting, temperature rise, overloading of generators, motors and may cause health risk problems due to the annoying light flicker which is consequence of voltage fluctuation. The effect of different sizes of DG on the voltage flicker and voltage sag in different buses of IEEE 34 buses radial distribution system has been investigated. To support this argument, simulations are achieved on MATLAB/SIMULINK, where the results reveal the amount of effect of DG on voltage flicker and voltage sag for different types of buses of radial distribution system.

Distributed Generation (DG); power quality; voltage sag; voltage flicker