Abstract

Now a days, the energy storage technologies operational and maintenance charge is decreasing rapidly. The integration of this technology into the distribution power generation, power quality is being enhanced since these devices gives quick response and high reliability. Dynamic voltage restoration is a process and instrument necessity to maintain, or restore and also compensate functional electric load during voltage sag and swell, harmonics in voltage supply. DVR is the most reliable custom power device that can protect sensitive load and it can be thoroughly solved the power quality problem in distribution power generation. Ultra capacitor is a specially designate capacitor which have low-energy density and high- power density, quick charge/discharge rates that area unit all ideal characteristic for meeting high voltage low energy events like grid intermittencies sag/swells. It combined the properties of capacitors and batteries into one device. UCAPs are electronic devices which are able of holding huge amount of electrical intrust quantity. It is also called as Ultra Capacitor (UCAP).