Coordinated optimization scheduling method for multi-microgrids and power distribution network

Abstract

The invention discloses a coordinated optimization scheduling method for multiple microgrids and a power distribution network. The method comprises the following steps: S1, establishing an upper-layerpower distribution network optimization scheduling model; S2, establishing a lower-layer multi-microgrid optimization scheduling model; S3, carrying out decoupling operation according to the interaction variables between the upper-layer scheduling model and the lower-layer scheduling model which are established in the step S1 and the step S2, and integrating the upper-layer scheduling model and the lower-layer scheduling model to establish a double-layer optimization scheduling model; S4, according to the double-layer optimization scheduling model obtained in the step S3, setting a double-layer cycle according to a target shunting method to determine an optimal strategy. According to the technical scheme, different optimization decision targets of the power distribution network and the microgrids, interruptible loads in the micro-grid and influences of interruptible loads and electric vehicles in the microgrids are comprehensively considered. Through double-layer planning and load andpower generation prediction, the overall benefits of the microgrids and the power distribution network are maximized on the premise that constraint conditions are met. The problem that the income ofthe power distribution network is only considered when the benefits of the microgrids are ignored in traditional microgrid system optimization scheduling is solved.

Description

technical field [0001] The invention relates to a method for coordinating and optimizing scheduling of multi-microgrids and distribution networks, which can be used in the technical field of automatic scheduling of electric power systems. Background technique [0002] With the vigorous development of new energy technologies, a large number of distributed power sources and energy storage systems have begun to be connected to the distribution network, and the distribution network has changed from a traditional one-way power flow to a two-way complex system. Although the extensive use of distributed energy helps to improve the environmental benefits of the system, the fluctuation of its output and the randomness of the operating environment have brought great challenges to the safe and stable operation of the distribution network system. The development of micro-grid technology allows distributed power sources, energy storage devices, and controllable loads to form a small syst...

AI Technical Summary

Problems solved by technology

At present, most researches focus on the energy management and optimization of single microgrid itself, and less attention is paid to the connection of multi-microgrid to the distribution network system.

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