Power Quality Improvement for a Hybrid Renewable Farm Using UPQC

Abstract

This article describes the eminence of power quality improvement in the integrated grid energy system with the solar photovoltaic (SPV) and wind energy (WE) hybridization using unified power quality controller (UPQC). The UPQC comprises of shunt active and series active power converters to enable the control schemes such as discrete 3 phase - phase locked loop (PLL) via a-b-c to d-q transformation and d-q to a-b-c transformation respectively. Subsequently, the system is subjected to the repeated disturbances in AC loads and output power generated from the renewable farm throughout the power transmission. Therefore itis mandatory to overcome the foresaid issues by incorporating a variable reactive power source. Apart from the regular application, UPQC is configured to look up the various concerns in connection to the quality of power such as diluting the harmonic current, voltage imbalance and reactive power compensation, sag and swell phenomena. The control technique for UPQC is implemented through the fuzzy logic controllers. The proposed UPQC also helps in dropping the energylosses that happen in power systems components and also ensures the safety environment. The imposed novel idea is experimented through PSCAD simulation platform and the obtained results certainly justifies the proposed UPQC for trapping the harmonic agents in the distributed renewable energy farms while exposed to non-linear/ susceptible load conditions.