Power Quality Comparison of grid connected wind energy system with STATCOM and UPQC

Generation of power from conventional energy sources has increased in the last thirty years and among all, the wind energy is mostly considered to be used where the required solar energy is not available. The main advantages of using wind as energy source are reduction in consumption of fossil fuels, reduction in the energy production cost, minimization of greenhouse gas emissions and thus clean and natural source of energy. We know that wind speed is very fluctuating in nature due to which implementation of wind energy into power system has many technical challenges such as security, reliability, availability and quality related to power to be supplied, either to the grid or to the load center. In this work the circuit model for the UPQC has been developed to improve power quality in grid connected wind system and results have been compared with STATCOM by simulating the model in MATLAB/Simulink software. The output of WECS with and without controller is observed through simulations.