Improving Low Voltage Ride Through of Wind Generators Using STATCOM Under Symmetric and Asymmetric Fault Conditions

The increasing wind power integration with power system has forced the situation to revise the grid codes to improve the reliability of the system. One important problem with wind generator is the poor low voltage ride through capability. The proposed scheme is to use STATCOM which provides the wind generator the ability to remain connected in the grid during the disturbances and also provide reactive power support demanded by the power grid. The voltage dips due to symmetrical and asymmetrical faults are considered for analysis. The synchronous reference frame based control scheme is employed for fault compensation which uses software phase locked loop scheme and park dq0 transformation technique. Extensive simulation results are included to illustrate the control and operation of STATCOM.