DGFACTS comparative in wind power to solve LVRT requirements

Abstract

This article compares the results recorded in the connection of three types of DGFACTS (DSTATCOM, DVR, UPQC) to a wind farm equipped with wind turbines with squirrel-cage induction generators, in order to test the response to voltage dips due to single-phase short circuit and two phase short circuit, because this type of asymmetric faults is one of the most common to consider a power system. The results are compared with a previous work, dealing with symmetric (three phase) short circuits. For illustrative purposes, reference has been made to a standard wind farm in Spain, which has been subject to a fault of the type specified in Operating Procedure 12.3 in the Spanish Grid Code. The aforementioned options provide the wind farms with LVRT capability, in addition to catering for numerous other possibilities that have not been considered within this research.