REVIEW ON VOLTAGE SAG STUDIES FOR DISTRIBUTION GRID INCLUDING RENEWABLE ENERGY SOURCES
Özet
Several types of power quality problems can be observed in power network. These power quality problems include voltage
unbalance, voltage flicker, voltage sags and swells, interruptions, and voltage and current harmonics. Voltage sag is one
of the vital power quality issues. This problem can cause a decrease in power grid voltage over a short time horizon. The
aforementioned problem is caused by various types of short circuits and the widespread use of sensitive devices. These
problems have a significant impact on power systems. In this review article, the different ways to prevent voltage sag
have been presented by considering literature studies. Concerning voltage sags in radial and mesh grids, the equipment
used, and methods have all been taken into account. In these studies, the articles about voltage sag-related problems have
been put into groups based on certain criteria. These criteria include the consideration of uncertainties in electricity
demand or renewable sources. The recommendations related to the voltage sag studies have been presented. These
suggestions are based on the inclusion of electricity consumption and renewable energy source uncertainties. The future
works have been mentioned by considering these load and renewable system uncertainties.