Design & analysis of D-STATCOM for power quality improvement using ICCT with conventional controllers

This paper presents the design & analysis of D-STATCOM using ICCT with conventional controllers to improve the power quality. The use of AC circuits in electrical power system has been a common practice nearly since the very inception of the interconnected power network. The most familiar loads on such a system were the constant power, constant impedance and constant current loads or a linear combination of thereof. In these cases, the voltage and current wave forms are nearly sinusoidal. But this is no longer the case with modern electric power system. Enormous use of the non-linear and time varying devices has led to distortion of source voltage and source current waveforms. As a consequence, recently the issue of power quality has become important. Both electric utility and end users of electric power are becoming increasingly concerned about the quality of electric power. The simulation model and results of proposed scheme are described and discussed in this paper.