Automatic control method of multi-channel centralized power supply

The invention belongs to the technical field of mine machinery and particularly relates to an automatic control method of multi-channel centralized power supply. The automatic control method of multi-channel centralized power supply is applied into mine roadways, and a power transformer is arranged at the intersected position of the multiple mine roadways and comprises an original end and a secondary end; the original end is switched into an alternating current power supply, and a master switch unit is arranged between the original end of the power transformer and the power supply; the secondary end of the power transformer is connected with a plurality of stringings, and a branch switch unit is arranged on each wire stringing; and the multiple stringings are connected with a current detecting module which is connected with a control module. The control method comprises the steps that the working currents on the stringings are detected firstly, and according to detected working current information on the stringings, switching off and on of the relevant switch units are controlled. The automatic control method of multi-channel centralized power supply has the advantages that the electricity-saving and environment-friendly effects are achieved, production cost is reduced, and safe production is achieved.