Cyber Times International Journal of Technology & Management

In the last few decades as the more increase in population occurred so the usage of electric power is increasing day by day, the operation of power systems has become complex due to growing consumption and increased number of non-linear loads because of which compensation of multiple power quality issues has become a compulsion. Hence the power companies are concentrating not only on quantity of the power but also the quality of the power. Here the new component within the flexible AC-transmission system (FACTS) family, called distributed Power-flow controller (DPFC) is presented in this paper. The day by day electricity demand and non-linear load in system are increased, so the power quality problems are also increased with increased complexity in system. The main power quality problems like voltage sag and swell are studied in this paper. The distributed power flow controller (DPFC) is used to improve power quality and minimize voltage deviation. The DPFC is derived from unified power flow controller (UPFC), by eliminating common DC link between series and shunt converters from UPFC. The three-phase series converter is split into number of single-phase series distributed converters through the line. The active power exchange between the series and shunt converter at third harmonic frequency through transmission line in DPFC.