Supercapacitors Energy Storage System for Power Quality Improvement : An Overview

Power quality problem causes a misoperation or failure of end user equipments. Distribution network, sensitive industrial loads and critical commercial operations suffer from outages and service interruptions which can cost financial losses to both utility and consumers. In India the use of electronic loads is increasing very fast and the gap between demand and the supply have made the reliability and power quality a critical issue. Further there is continuous thrust on optimal utilization of the non-conventional energy sources along with the central power station. In this paper a critical review have been presented chronologically various work to improve quality of power with the help of energy storage device i.e. Supercapacitors energy storage systems for ASD, elevators, UPS, and power distribution system, ride through capability, real power injection and reactive power injection for stabilization of the system.