IMPROVEMENT OF POWER QUALITY IN WIND ENERGY SYSTEM USING STATCOM
This paper presents improvement of power quality in wind energy system using STATCOM (Static compensator). The project study demonstrates the power quality problem due to installation of wind turbine with the grid. The power quality measurements arethe active power, reactive power, variation of voltage(sag, swell), flicker, harmonics and electrical behavior of switching operation. In this proposed scheme static compensator (STATCOM) is connected at a point of common coupling with a battery energy storage system (BESS) to mitigate the power quality issues. The main functional requirements of the STATCOM in this paper are to provide shunt compensation, operating in capacitive mode only, in terms of the following; voltage stability control in a power system, as to compensate the loss voltage along transmission. Here two control schemes for STATCOM are compared: Bang-Bang current controller and Fuzzy logic controller. In this paper its operation and its simulation diagram is discussed. The STATCOM control scheme for the grid connected wind energy generation system for power quality improvement is simulated using MATLAB/SIMULINK in power system bock set. KeywordsSTATCOM, power quality, wind energy system, BESS, Bang-Bang current controller, Fuzzy logic controller.