Improvement of wind farm operation during network disturbance by SMES and STATCOM

In this paper, applications of SMES and STATCOM to improve the operation of large wind farm are investigated. The proposed control strategy of STATCOM is based on PWM control, both the angle and the magnitude of the converter output voltage. And the proposed SMES system is based on a PWM voltage-source converter (VSC) and a two-quadrant DC–DC chopper using an insulated-gate bipolar transistor (IGBT). Considered power system consists of two groups of wind farm which are delivering power to an infinite bus through a transmission line with two circuits. Moreover, the proposed wind farm is 50MW, includes of 5 induction generators in each group which are based 5MW variable speed wind turbines driving squirrel cage induction generators. The space between turbines is 350m. PSCAD/EMTDC software is used to model and implement the power system. Simulation results show fine operation of the Wind farm with contribution of mentioned devices even when the severe fault has been applied.