Abstract: Power system in China is centralized dispatched for a long time.Centralized dispatching plays an important role in safe operation of power system.However,it exerts a negative influence on energy-saving generation dispatching.In the condition that the constraints of power system security are subjected,automomyautonomy-dispatching of generators is proposed,which means generators are given some autonomy when schedule plans are drawnpower system security constraints.A novel energy-saving generation dispatching system based on the coordination of centralized dispatching and independent automomyautonomy-dispatching of generators is proposed.Firstly,when the initial schedule plans are drawn,system operator gives some framework constraints.Generators are permitted to draw their own schedule plans subjected to the framework constraints.Then after being summarized,checked and revised by dispatching institution,the plan becomes feasible.Then,system operator summarizes the schedule plans of power plants to form an overall plan.The plan is checked by system operator.If necessary,the plan would be revised.A feasible schedule plan is worked out.Finally,generators are permitted to adjust themselves according to actual situations after the plan is drawn,and the plan can be revised after security check to reach the goal of energy-saving.