Application of Battery Energy Storage in Wind Penetrated Two Area Power System
In this paper, a Battery Energy Storage System (BESS) having a rating of 1 % of total plant capacity of 75 MW is utilized with a linearized two area power system infiltrated with 20% wind. A linear DFIG model is constructed based on set point. A voltage source converter (VSC) is configured with IGBT and a two quadrant chopper is employed for bidirectional power interface. The participation of wind turbines into automatic generation control(AGC) system is made possible by addition of inertial control loop in wind turbine generators (WTGs).The inclusion of compact sized BESS helps in diminishing the peak overshoot in frequency and tie power oscillations. Studies carried out in MATLAB Simulink Environment, shows about 79 % decrease in frequency oscillations and the tie - power deviations get completely vanished.
Keywords - Load Frequency Control (LFC), Doubly Fed Induction Generator (DFIG), Wind Turbine Generators (WTGs), Battery Energy Storage System (BESS)