Mitigation Of Unbalanced Faults In Distribution System Using Fd-Statcom With Scess

Abstract: Power quality is certainly a major concern in the present era.This paper proposes a flexible D-STATCOM with a new controller scheme. And it supplies power to sensitive loads under Islanding conditions. This paper introduce the performance of FD-STATCOM system to mitigate power quality problems under all types of system related disturbances such as L-L &DLG faults. A 12 pulse IGBT based D-STATCOM is designed using MATLAB.Here the super capacitor is used as the storage device.The realibility of the control scheme in the system response to the voltage disturbances caused by LL&DLG faults and Islanded operating conditions are obviously proved in the simulation results.

Keywords: FD-statcom,voltage sags,super capacitor,Islanding conditions,Energy storage system.