Mitigation of Harmonics in Distributed System with D-GCSC fed Loads using closed loop control of DSTATCOM

Abstract

Modern Distributed systems are equipped with plenty of non-linear loads viz. Computers, Electronic Loads, SMPS and many more Power Electronics based loads. These loads are injecting both voltage and current harmonics into the utility grid and distribution systems. The presence of harmonics is very damaging to all equipment which has been connected to the point of common coupling (PCC). This article focuses engrossed on the distribution system, incorporated of feeders with Distribution GTO Thyristor controlled Series Capacitor (D-GCSC) fed R and RL loads. This article entrust the simulation results with FFT analysis focused on THD of current and voltage waveforms, in two stages, one is with D-GCSC feeding resistive load and second is RL load. The distribution systems have been simulated without and with DSTATCOM for both the stages of D-GCSC fed loads and presented the results. The DSTATCOM is designed and closed loop control circuit have been developed and simulated the same which is quite effective in mitigating the Voltage as well as Current harmonics in distributed systems comprising of nonlinear Loads.