Microgrid cluster concentrated-distributed type coordinated optimization scheduling method

Abstract

The invention discloses a microgrid cluster concentrated-distributed type coordinated optimization scheduling method. The method includes the steps that a microgrid cluster two-layer optimization scheduling model is built, and the microgrid cluster global goal and local goals of microgrids are all taken into consideration, wherein a microgrid cluster scheduling center is arranged on the upper layer, and a microgrid scheduling center is arranged on the lower layer; the cluster scheduling center on the upper layer calculates generating capacity of all micro power sources according to optimization of the global goal and sends the generating capacity to the microgrid scheduling center on the lower layer, wherein the generating capacity serves as decision variables; the microgrid scheduling center corrects the generating capacity of the micro power sources according to the local goals of the microgrids; the corrected generating capacity is sent to the cluster scheduling center on the upper layer, and correction and iteration are repeated until a coordination solution with which both the upper layer and the lower layer are satisfied is achieved. According to the microgrid cluster coordinated optimization scheduling method, inconsistency of the goal of the upper layer and the goals of the lower layer is taken into consideration, and through iterative optimization and interacted correction of the cluster scheduling center and the microgrid scheduling center, the global goal and the local goals can be coordinated. The method adapts to the distributed characteristic of a microgrid cluster, and coordinated operation between the microgrids can be achieved.

Description

technical field [0001] The invention relates to the technical field of electric power optimization dispatching, in particular to a method for coordinated optimization dispatching of a microgrid group. Background technique [0002] The continuously tense energy situation in the world has promoted the application and development of clean energy. Distributed power generation technology based on renewable energy has become the focus of research to achieve energy diversification. Microgrid connects geographically relatively concentrated distributed power into a small grid, which provides an effective method for large-scale distributed power control. [0003] With the large-scale access of distributed power, in order to give full play to the benefits of distributed power and effectively solve the related problems caused by its randomness and volatility, the concept of micro-grid group has been proposed on the basis of micro-grid in recent years. The microgrid group contains mult...

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Problems solved by technology

At present, no systematic research has been carried out on the dispatching mode of the microgrid group, and no corresponding optimal dispatching model and algorithm have been proposed.

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