The invention discloses a method and device for controlling short-circuit current of a substation, a storage medium and a processor. The method includes the following steps: accessing target switchesto two sets of target buses of the substation respectively; in the case of normal operation of the substation, controlling the target switch in each set of target buses to be closed, wherein the closed target switches cause the two sets of target buses to be in a simultaneous operation state; and in the case that the substation fails, controlling the target switch in each set of target buses to bedisconnected, wherein the disconnected target switches cause the two sets of target buses to be converted from the simultaneous operation state to a segmented split operation state, and in the segmented split operation state, each set of target buses is divided into two sections of sub-buses, so that the substation performs split operation, and the current of the substation that performs split operation is lower than the current of the substation that fails. According to the scheme of the invention, the technical effect of effectively controlling the current of the substation can be achieved.