Novel energy-saving generation dispatching system based on the coordination of centralized dispatching and autonomy-dispatching of generation companies

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, autonomy-dispatching of generators is proposed, which means generators are given some autonomy when schedule plans are drawn. A novel energy-saving generation dispatching system based on the coordination of centralized dispatching and independent autonomy-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. 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. © 2011 Chinese Society for Electrical Engineering.