Study of RSFCL effect to improve the behavior of DFIG during a fault

As electrical energy will be supplied from renewable sources; large wind farms are being connected to the existing distribution network may lead to the increasing fault levels beyond the capacity of existing switchgear. Also, with connecting distributed generation the radial structure of distribution network is disturbed and some disruption may appear to its protection system. Using fault current limiters at the output of large distributed generation units, can be considered as a solution to restrict the fault current and prevent disruption performance of protective equipment. In this paper, resistive superconducting fault current limiters (RFCLs) are introduced and their performance in management of fault level in a power system including wind turbine shown by PSCAD/EMTDC simulation. Studies showed that the proposed FCL is not only able to decrease fault level but also can to prevent incoordination protective equipment to the network.