Economic dispatching method for hierarchical multi-objective combination of micro grid

Abstract

The invention provides an economic dispatching method for hierarchical multi-objective combination of a micro grid. A load level model, a source-load level model and a source network load level modelare established and optimization calculation is carried out to obtain sequential charging and discharging loads of an electric vehicle at each time; the sequential charging and discharging loads of the electric vehicle at each time are substituted into the source-load level model, the source-load level model is calculated based on a multi-target particle swarm optimization algorithm to obtain an optimized output of an energy storage unit at each time and an optimized output of a micro grid net load at each time; and the optimized output of the energy storage unit at each time and the optimizedoutput of the micro grid net load at each time are substituted into the source network load level model, and the source network load level model is calculated based on the multi-target particle swarmoptimization algorithm to obtain an optimized output of a diesel engine at each time and an optimized output of a main network connecting line at each time. According to the invention, an effect of unification of the operating economy, environment, and safety benefit is realized by using the large-scale electric vehicle, micro grid, and main network.

Description

technical field [0001] The invention belongs to the field of energy Internet, and more specifically, relates to an economic scheduling method for hierarchical multi-objective integration of microgrids. Background technique [0002] With the increasing shortage of global resources and ecological pollution, microgrids, as an effective supplementary means of main grid operation, are increasingly favored by countries all over the world. The economic dispatch of microgrid is one of the key contents of microgrid related research. Its purpose is to rationally allocate the output of each unit under the premise of meeting the normal demand of all loads, and maximize economic benefits, environmental benefits or other indicators. [0003] At present, on the one hand, a large number of microgrid economic dispatching researches involve single-objective optimal dispatching with economic cost as the objective function, but its disadvantage is that the consideration factors are relatively s...

AI Technical Summary

Problems solved by technology

However, whether it is single-objective or multi-objective economic dispatching of microgrids, there are generally problems such as relatively limited objective functions, insufficient consideration of the operating characteristics of distributed power sources, and resulting results that are not in line with actual production.

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