The unified power flow controller with fault current limiting ( UPFC － FLC) combines a fault current limiter with a unified power flow controller to form a new FACTS device that can effectively control short － circuit current of the system． For 220 kV voltage class，in order to shorten the current － limiting time，reduce the device volume and cost and achieve more efficient short － circuit fault removal，a new UPFC － FLC is proposed，that is，taking saturated autotransformer as series tansformer and adopting RLC series resonant circuit for the secondary side current limiting branch． Its topological structure and current limiting process are analyzed，and the main parameters of the device are designed． The simulation results show that the new UPFC － FLC has a better current limiting effect than the conventional one in terms of smaller volume cost．