Modelling and Controlling of SCES Based Wind Farm Power Regulation System

The adverse impacts of wind power fluctuations on the power system become increasingly severe as wind turbine installation continues to grow.A super-capacitor energy storage(SCES) based wind power regulator is presented for smoothing power fluctuations and controlling wind farm terminal voltage.Based on the configuration and operation principle of the regulating system,a control strategy combining wind power control,super-capacitor voltage control and power conditioning system(PCS) control is proposed in detail.A dynamic small-signal model of PCS is presented for PCS controller design.The effectiveness of the device and control strategy is validated by simulation with PSCAD/EMTDC.