Power Quality Improvement in Distribution Line Using D-STATCOM

A Power quality means maintain the sinusoidal bus voltage at rated frequency. A power quality problem is an occurrence manifested as a nonstandard voltage, current or frequency that results in a failure or a mis-operation of end user equipments. This paper purpose a noval distribution level voltage control scheme that can compensate voltage sag and swell condition in distribution system. DSTATCOM is one of the equipments for voltage sag/swell mitigation in power systems. Voltage sag has been considered as one of the most harmful power quality problem as it may significantly affect industrial production. This paper presents power quality improvement in Distribution line using Distribution Static Compensator (D-STATCOM) to mitigate voltage sag under faults. Voltage sag under different type of short circuits has been estimated using MATLAB/SIMULINKsoftware. s- D-STATCOM, Total harmonics Distortion (THD, Voltage Sag/swell, Voltage Source Converter (VSC).