Abstract
Low voltage ride-through (LVRT) is one of the main requirements of the new grid codes for integration of wind farms (WFs) to power system. In this paper, to enhance the LVRT capability of doubly-fed induction generator (DFIG)-based WFs, a capacitive bridge-type fault current limiter (CBFCL) is proposed. The CBFCL is based on the conventional inductive bridge-type fault current limiter (IBFCL), in which the limiting impedance (LI) of the IBFCL is adapted according to WFs requirement to provide the reactive power needed of WFs after fault clearance. The WF has been modeled based on an equivalent aggregated DFIG. To check the effectiveness of the CBFCL, its performance is compared with the IBFCL. The PSCAD/EMTDC simulation results show that the CBFCL is an effective and novel solution for LVRT augmentation and short circuit current limitation of WFs. Also, it was found that the CBFCL is more competent to satisfy the LVRT requirements than the IBFCL.
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