A NOVEL STATCOM HYBRID FUZZY CONTROL SCHEME FOR GRID CONNECTED WIND ENERGY FED BESS SYSTEM

Valluri S R K Chowdary, K.V.Eswara Rao

Abstract


In this paper, the fuzzy controller is designed for static synchronous compensator (STATCOM) to enhance interconnected power system stability. The power frequency model for STATCOM with conventional controllers is presented first. Fuzzy controllers are then designed for both main and supplementary controllers of the STATCOM. The fuzzy main control is constant voltage control with voltage regulation which aims at providing voltage support on the grid of interconnected power systems to enhance transient stability and increase transfer limit. When the wind power is connected to an electric grid affects the power quality. The grid connected wind energy generation system for power quality improvement by using STATCOM control 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 battery energy storage is integrated to sustain the real power source under fluctuating wind power. Here two control schemes for STATCOM are compared: Bang-Bang current controller and Fuzzy logic controller. Bang-Bang controller is a hysteresis current controlled technique. The STATCOM control scheme for the grid connected wind energy generation system for power quality improvement is simulated using MATLAB/SIMULINK

Keywords


STATCOM; power quality; wind generating system; Battery Energy Storage System (BESS); Bang –Bang current controller; Fuzzy logic controller;

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