Power supply system of machine room of meeting room

The utility model discloses a power supply system of a machine room of a meeting room. The power supply system comprises a main power supply, a standby power supply, distribution boxes and multiple ATS two-way alternating-current switching devices. The main power supply and the standby power supply are respectively connected with the distribution boxes; each of the distribution boxes is connected with the ATS two-way alternating-current switching devices of a machine cabinet; and the ATS two-way alternating-current switching devices are connected with a power supply distribution unit and a timing-sequence power supply of the machine cabinet. According to the utility model, two independent USP power supplies are connected to the meeting room and respectively enter the main distribution box and the standby distribution box, various air-switch output is disposed in each of the distribution boxes, one air switch corresponds to one machine cabinet output, and the air-switch output of the two distribution boxes are connected into the machine cabinet and to the ATS two-way alternating-current switching devices, so seamless switching can be achieved; and once the main UPS power supply fails, the power supply system can automatically switch to the standby UPS system.