Analysis of D-STATCOM for power quality enhancement in distribution network

This paper illustrates the power quality improvement aspects in distribution system by DSTATCOM based on d-q-0 reference frame. The utilities like domestic, commercial and industrial are facing numerous PQ problems in the form of voltage dip, swell and voltage variations or fluctuations. The contributions of these power quality issues are severe in our existing electrical systems nowadays. In this work the estimation and mitigation of voltage sag, voltage swell, voltage fluctuation and reactive power limiting for different loading condition in utility by using Custom Power Devices. The D-STATCOM has taken as a compensating device, since it known for its flexibleness, easy implementation, dynamic load compensation & multifunctional operation. The model of D-STATCOM connected in shunt with a three-phase source feeding a constant and a variable load, which is develop using Simulink. The Simulated result demonstrates that D-STATCOM can consider as a feasible solution for solving voltage dip, swell and fluctuation problems.