The invention relates to a power supply device for a
transformer substation, which comprises two transformers (1,2) and two ATS switches (3,4), wherein ATS switches are connected with sections of
alternating current buses (5,6) respectively; each section of the
alternating current bus is connected with an
alternating current feeder module, a charging module, an
intelligent lighting feeder module and the like; and each charging module is connected with the same alternating current
bus (7), and the alternating current buses are connected with two sets of the
direct current feeder modules, two sets of inversion power modules, two sets of DC-DC modules and one set of accumulators (8) respectively. The power supply device has the advantages that: all the switches are intelligently modularized and integrated in a
chassis; a switch
programming control hardware platform is established and modules are integrated into the network through
network communication technology, so the power switch for the
transformer substation has the functions of activating preset programs and completing programmed operation besides the conventional manual control,
remote control and protective control according to related information triggering conditions.