The utility model discloses an electric wire netting security and stability control decision is realized by a regional projection energy carries out station device, include that mother board module, interchange module, communication control module, central authorities handle the module, module, power module are left to intelligent division of income module, intelligent signal module, intelligence,the HSB high speed bus was connected with the CPU module on the CC module passed through the mother board module, intelligence DI module, intelligent DO module, intelligent SIG module on through themother board module intelligent IO bus be connected with the CPU module. The utility model discloses an analog input interface to the mother board module carries out the compatibility design with thetripping operation output interface, and conventional transformer substation carries out the station device with the digital security and stability control decision is realized by a regional projection energy of transformer substation can use same mother board module, can satisfy the analog input mode of routine sampling and two kinds of differences of digital sampling, also can satisfy the tripping operation mode of two kinds of differences of tripping operation of conventional relay and GOOSE tripping operation, can also satisfy the engineering mode of routine sampling GOOSE tripping operation.