Design Requirements for a Dynamic Series Compensator for Voltage Sags Mitigation in Low Voltage Distribution System

Abstract

:Power quality issues have become an

increasing concern due to an increase of sensitive loads in

distribution system. A dynamic series compensator or Dynamic

Voltage Restorer (DVR) is a custom device that can be used to

protect sensitive loads from various power quality problems from

disturbed incoming supply. The dynamic voltage restorer (DVR)

has become popular as a cost effective solution for the protection

of sensitive loads from voltage sags. This paper highlights a series

of discussion, analysis and studies performed on the active power

injection requirements for a DVR under various system and load

conditions, as well as for different types of fault in both single

phase and three-phase fault. The analysis and experimental results

validate the effectiveness of the DVR for mitigation voltage sag in

low voltage distribution system.