Load Balancing and Harmonic Elimination Using Distribution Static Synchronous Compensator (DSTATCOM)

Distribution Static Synchronous Compensator (DSTATCOM) is a shunt compensating device which is used to improve current profile by exchanging of reactive power with unbalanced and nonlinear load. DSTATCOM is a shunt compensating device used for power quality improvement in distribution systems. Relevant solutions are applied for harmonics, fluctuation of voltage, voltage deviation, unbalance of three phase voltage and current and frequency deviation. Different controlling schemes such as Phase Control Method (PCM), Fryze Power Theory (FPT), Synchronous Reference Frame Theory (SRFT) and Instantaneous Reactive Power Theory (IRPT) are used for reactive power compensation with the help of Voltage source Inverter (VSI). In this project we are going to balance the source current using different control schemes. The results of different source currents are compared with a different control schemes in terms of active and reactive power and in terms of Total Harmonic Distortion (THD) for nonlinear load using Fryze Power Theory (FPT) and Instantaneous Reactive Power Theory (IRPT). Reference currents are generated by the different control schemes have been dynamically traced in a hysteresis current controller. The performance of DSTATCOM for different control schemes is validated for load balancing and harmonic elimination by using simulation models in MATLAB/SIMULINK