UPS multiple output intelligent control system and UPS multiple output intelligent control method

The invention relates to a UPS multiple output intelligent control system and a UPS multiple output intelligent control method. The method comprises the following steps: when a UPS is overload, branch loads are disconnected sequentially according to the level of importance from low to high until the overload phenomenon of the UPS disappears, and when all the branch loads are disconnected and the UPS is still overload, the main output of the UPS is disconnected, and the system stops running; and when the accessed total load decreases, the disconnected loads are reconnected to the UPS sequentially according to the level of importance from high to low according to the decrease of the total load under the condition of ensuring that the UPS is not overload. The invention further provides the system for realizing the method. Continuous power supply of important loads of the UPS can be ensured, secondary loads can be automatically reconnected after disconnected, so that the control method is more intelligent. Load disconnection and recovery can be achieved by sampling the total output current instead of sampling the current of each branch, so that the cost is lower.