Coordinated Dispatch between Active Distribution Network and Main Network

Active distribution network (ADN) with more autonomy in dispatching is able to control distributed generations, storage facilities and active load to realize the efficient operation. The dispatching schedule of main network and distribution network influence each other. Besides the operating cost, the coordination of main network and distribution network should be considered when we make the optimal schedule of ADN. This paper provides a real time information exchange method, and proposes the model of active load and storage facilities. A coordinative dispatch optimization model is built based on real time pricing. In addition, a parallel optimization algorithm is presented to solve the problem. Simulation results on the IEEE 9 node system connected with a distribution network verify the validity of the model and the algorithm. Finally, the impact of demand response, storage facilities and power limit in interconnecting lines on dispatching schedule is analyzed.