Paper Title
Design And Simulation Of Custom Power Device Forpowerquality Improvement In Power System
Abstract
Abstract-This paper objective is to stabilize the voltage by compensating power quality problems. The various power
quality disturbances are transients, interruptions, voltage sag, voltage swell, voltage collapse, harmonics etc. Cascaded
Multilevel Converter based DVR is used for harmonics control.. This work proposes the enhancement of power transfer
capability and maintaining unity power factor. Relative Harmonie analysis is also discussed based on the total harmonie
distortion (THD) calculations and reducing the transients power fluctuations at the distribution side. Now days the use of
sensitive electronic equipment has increase which has lead to power quality problems. Dynamic voltage restorer (DVR) is a
custom power device used for the Compensation of voltage sag and swell.Power quality problem is an occurrence
manifested as a non-standard voltage, current or frequency. One of the major problems dealt here is the voltage sag.
Dynamic Voltage Restorer provides a cost effective solution for protection of sensitive loads from voltage sags currents,
although the applied voltage being sinusoidal. MATLAB/SIMULINK tool is used for evaluating the performance of the
proposed control scheme.In this paper we are concentrated to overcome sag, swell harmonics,flickers and transients and
finally we compared the powerfactor at load side with and without DVR.
Keywords- DVR, MLI, Power-Factor Correction, Powersystem, Total Harmonic Distortion (THD)