Power supply system and control method for data center, and data center

A power supply control method for a data center, the data center comprising a power supply system, a controller, a power distribution device, and at least one server, the power distribution device being configured to distribute power supplied by the power supply system to the at least one server;

• wherein the method is applied to the controller of the data center;
• the power supply system for the data center comprises a substation, a power distribution system, and a voltage level detection apparatus;
• the 220 kV/20 kV substation is connected to a power grid and the power distribution system, respectively, and is configured to convert a 220 kV voltage outputted by the power grid into a 20 kV voltage and output the 20 kV voltage to the power distribution system;
• the 20 kV power distribution system is connected to the power distribution device of the data center, and is configured to distribute the 20 kV voltage outputted by the substation to the power distribution device of the data center;
• the voltage level detection apparatus is connected to the power distribution device of the data center, and is configured to detect a voltage level of the data center;
• and the power supply control method comprises:
• obtaining the voltage level of the data center;
• and
• controlling, based on the voltage level of the data center, the power distribution system to convert the 20 kV voltage into a voltage equivalent to the voltage level.