Impact of the voltage harmonic sequence on the power quality based on UPQC

Abstract

This study proposes a combined operation of the Unified Power Quality Conditioner (UPQC) with wind power generation system. The proposed system consists of a series inverter, a shunt inverter and an induction generator connected to a weak distribution power grid. The proposed system can compensate voltage sag and swell, voltage interruption, harmonics, and reactive power. We have studied the impact of the double disturbances which concern sag and sequence of the harmonic voltage on the power quality.