Mitigation of power quality events using deadbeat predictive controller based distribution static compensator

Voltage sag is one of the most significant power quality problems as a result of increasing complexity in the power system. This paper deals to look at solving the voltage sag by using the custom power device Distribution Static Compensator (DSTATCOM). This proposed scheme implements a new controller to generate reference voltage for a Distribution Static Compensator (DSTATCOM) which operates in voltage-control mode. The compensator injects minimum current to reduce the losses in the feeder and voltage-source inverter. DSTATCOM is achieved which reduces the cost and increases its capacity to compensate voltage sag. During load change, UPF is maintained and voltage is regulated at load terminal. The DSTATCOM state space model is incorporated with the Deadbeat Predictive Controller using MATLAB/SIMULINK software for fast load voltage regulation during voltage disturbances. With these features, this scheme allows DSTATCOM to tackle power quality issues by providing power factor correction, voltage regulation, reduction of harmonics (THD) and real power and reactive power mitigation based on the load requirement.