• Injeti Sivakumar
• U. Kamal Kumar

Power Quality is the major concern in case of sensitive loads that are present in distribution system. In this paper, a new idea is presented to improve the power quality under sag,swell and harmonic condition, when the system connected to DVR-Ultra capacitor. The compensation capability of a dynamic voltage restorer depends on the maximum voltage injection ability and the amount of stored energy available within the restorer. Ultra capacitor has low energy density and high power density ideal characteristics for compensation of voltage sag/swell, which are both events that require high power for short span of time. The proposed system has active power capability and will be able to independently compensate temporary voltage sags ,swells and harmonics without relying on the grid to compensate for faults on the grid with less time period. The behavior of device is tested to 11-bus distribution system under a choice of loadings and verified through MATLAB/Simulink software.

Power quality, d–q control, Dynamic Voltage Restorer (DVR), Ultra capacitor (UCAP), PI controller

"Enhancement of Power Quality for 11-Bus Distribution Systems through Incorporating of DVR-Ultra Capacitor", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.468-475, June-2018, Available :http://www.jetir.org/papers/JETIR1806574.pdf

"Enhancement of Power Quality for 11-Bus Distribution Systems through Incorporating of DVR-Ultra Capacitor", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp468-475, June-2018, Available at : http://www.jetir.org/papers/JETIR1806574.pdf