“Enhance the Power Quality of the Smart Grid System by Using Advance UPQC.”

Abstract

Abstract: The UPQC is the grouping of a DVR and D- STATCOM which perform series, shunt compensating and phase shifting at the same time. This is capable to control the PQ with leading and lagging reactive and real power flow through a particular route with enhance the system stability. The salient options of UPQC device are its multiple management functions, like voltage management, transient stability improvement & damping oscillation. Voltage sag and swell compensation is important for secure system operation. This is a multivariable versatile AC transmission systems controller. In this work UPQC is excited by PV array with DC link capacitor. In the SG using PMU and flow meter, measures the phase and related data, from this data of analysis centralized controller determine the harmonics amplitude and phase. At fault condition UPQC mitigate the fault with simultaneous or individual operation of series-shunt converters. At the presence of harmonics this two converter works simultaneously and optimized the harmonics injected by the UPQC, the centralized controller calculates the switching angle for same magnitude with opposite phase harmonics and inject into the system. These two components eliminate each other and make the grid approximately harmonics free with mitigate the active and reactive power problem. Keywords: UPQC, DSTATCOM, DVR, PV array, Power Quality