The development of active distribution network (ADN) is an effective approach to the consumption of intermittent distributed generation. Based on control technology of ADN optimal operation

a control method of global centralized optimization and regional coordinated correction is proposed. In the long cycle

global optimization control is implemented and an optimal flow model based on semi-definite programming theory is developed to get minimum power loss by coordinated globally active and reactive power resources. In the short cycle

the network is divided into several controllable regions

and the coordinated correction control strategy for distributed generation

voltage reactive power equipment

and flexible load for tracking the regional optimal operation objective is proposed. The simulation example demonstrates that global optimization control is able to effectively reduce power loss while regional correction control will accurately track the global optimization objective

maintaining the network optimal state of operation from beginning to end. This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2014AA051901).