Improving The Power Quality In The Transmission Systems Using SMES & PV-DVR By Elimination Of Voltage Sag And Swells

. Due to smart grids various energy storage technologies emerged and their integration into smart grids became cost effective. Dynamic Voltage restorer is one of the products which provides compensation for voltage sag and swell in power systems with energy storage integration technologies. In this work Ultra Capacitors (UACP), Superconducting Magnetic Energy Storage (SMES) & PV Cell is integrated to compensate for the sag and swell in power systems. The main purpose of integration is that UACP have lower energy densities, mostly used for low voltage applications. With SMES-PV Cell integration sag and swell can be compensated even for high voltage applications. This integration improves power quality by compensation sag and swell without depending on the grid. UACP, SMES are integrated to the DVR through the bi-directional converter which provides steady DC voltage at the DC link. In this work operation of SMES, UACP, DC-DC converter are discussed. All the simulation work has been carried out using the MATLAB software, the voltage sag and the swell has been maintained in the stable condition.