The invention provides a three-power-source open-and-close station. The three-power-source open-and-close station is used for solving the problems that two double-power-source open-and-close stations need to be established when an coil-in power supply is divided into three ways in the prior art, an occupied area is large, field cost is high and construction investment is large. The three-power-source open-and-close station comprises three section buses, a first coil-in cabinet, a first voltage transformer cabinet, a plurality of first section bus coil-out cabinets, a second coil-in cabinet, a second voltage transformer cabinet, a plurality of second section bus coil-out cabinets, a third coil-in cabinet, a third voltage transformer cabinet, a first bus-couple cabinet, a first bus-couple separating cabinet, a second bus-couple cabinet and a second bus-couple separating cabinet, wherein the first coil-in cabinet, the first voltage transformer cabinet and the plurality of first section bus coil-out cabinets are respectively connected with a first section bus, the first coil-in cabinet, the first voltage transformer cabinet and the plurality of a first section bus coil-out cabinets are respectively connected with s second section bus, the third coil-in cabinet and the third voltage transformer cabinet are respectively connected with a third section bus, the first bus-couple cabinet is connected with the first section bus, the first bus separating cabinet is connected with the third section bus, the second bus-couple cabinet is connected with the third section bus, and the second bus separating cabinet is connected with the second section bus. With the technical scheme, the three-power-source open-and-close station is beneficial for saving land resources and saving cost.