Fair load margin distributed regulation and control method for heterogeneous microgrid group

Abstract

The invention discloses a fair load margin distributed regulation and control method for a heterogeneous micro-grid group. The energy management of the micro-grid group is completed by utilizing group-level control and micro-grid-level control optimization: in thegroup-level control, adopting a group balance algorithm containing time delay to enable the load margin of each micro-grid to tend to be balanced; in micro-grid level control, solving a scheduling plan with the purpose of minimizing the operation cost of the micro-grid through migration optimization, and adjusting the scheduling plan to approach a load margin balance value. According to the method, on the basis of system composition in each micro-grid group, micro-grid group-level and micro-grid-level double-layer management is considered at the same time, the minimum operation cost serves as a control target, communication pressure is reduced through neighbor micro-grid communication exchange, and fairness and economical efficiency of heterogeneous micro-grid group-level operation are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of micro-grids, and in particular relates to a method for distributed regulation and control of a fair load margin of a heterogeneous micro-grid group. Background technique [0002] In the face of increasingly severe global issues such as climate change, environmental risk challenges, and energy resource constraints, it has become a priority to accelerate the new path of sustainable global energy development, the development of renewable and clean energy, energy diversification strategies, and advanced and efficient energy utilization technologies. It is an inevitable choice for the sustainable development of human society. However, the power supply range and energy storage capacity of a single DC microgrid are generally relatively small, and the ability to absorb renewable energy is insufficient. Renewable energy and load fluctuations will interfere with the stability of the system. Considering that the di...

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Problems solved by technology

[0003] Most of the existing control methods for microgrid groups pay more attention to the control between groups, and use multi-agent control methods or game theory to solve the fair power distribution between microgrids, but they do not combine microgrids. The internal system configuration and power distribution are managed at the group level and the microgrid level, and there are certain limitations in the research on the actual microgrid group power interaction.

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