Control of Total Harmonic Distortion in Distribution Network using Compensation

Maximum AC loads consumes reactive power it causes poor power quality in power system. This paper focuses on power quality improvement with DSTATCOM on feeders feeding non-linear load that is induction furnace. The Distribution Static Compensator (DSTATCOM) is a compensating device which is used to control the flow of reactive power in the distribution systems. In order to maintain the power system quality, the DSTATCOM will absorb and provide reactive power to mitigate voltage sag, swell and interruption in various conditions. THD analysis under various faults conditions with or without DSTATCOM is done in this paper. A dqo transformation based pulse width modulation (PWM) current controller is used to derive gating pulses for the IGBT switch. The models are developed and simulated in MATLAB using Simulink. Description of their element models and results of simulation are presented in the paper.