The utility model discloses a transformer switching operational system, include: be used for gathering the be incorporated into the power networks voltage of side and the monitoring devices of idle data, monitoring devices's input is connected in the side that is incorporated into the power networks, be used for sending the FPGA controlling means of switching signal according to the data that monitoring devices gathered, FPGA controlling means's input is connected in monitoring devices's output, be used for controlling the on -off switch's of the transformer of low tension side the flexible thrown cut device of thyristor, the flexible thrown cut device's of thyristor output is connected in on -off switch, and the flexible thrown cut device's of thyristor input is connected in FPGA controlling means's output, the low tension side reactive power compensator that is incorporated into the power networks, low tension side are incorporated into the power networks reactive power compensator's switch spare and connect in FPGA controlling means's output, and the low tension side is incorporated into the power networks reactive power compensator's output and connects in the low pressure generating line. This kind of transformer switching operational system can control transformer the switching number of times, the electric energy quality of the side of guaranteeing to be incorporated into the power networks improves the operating efficiency of transformer.