Voltage Recovery of Dynamic Slip Control Wind Turbines with a STATCOM

The fast development of wind power generation presents new requirements for the wind turbines integrated into the network. After the clearance of an external short-circuit fault, the voltage at the generator terminal needs to be re-established and the wind turbine should restore its normal operating condition quickly for power system stability. This paper studies the voltage recovery of a dynamic slip and turbine pitch controlled wind turbine. A simulation model of a dynamic slip controlled wind turbine in PSCAD/EMTDC is presented, and the control schemes are described. The function of a STATCOM in re-establishing the system voltage after the clearance of an external short-circuit fault and restoring the normal operation of the wind turbine has been investigated.