Energy-saving outdoor grid current limiting device

The invention relates to a current limiting device consisting of a current limiting inductor and a high-capacity and high-speed switch which are connected in parallel, in particular to an energy-saving outdoor grid current limiting device, comprising a current limiting inductor and a high-capacity and high-speed switch which are connected in parallel. The energy-saving outdoor grid current limiting device is characterized in that the high-capacity and high-speed switch comprises a tubular insulating shell (8) both ends of which are sealed and are respectively provided with an upper flange (5) and a lower flange (11), and leading-out terminals are respectively arranged on the upper flange (5) and the lower flange (11); a bridge body (1), a fuse and a non-linear resister (7) are installed in the insulating shell (8) which is also provided with a measuring and control unit (2) consisting of a controller and a current inductor (9). The invention can not only be used in a medium-voltage system, but also have obvious effect on short-circuit current limitation of 110kV and 220kV high-voltage grids.