Method for evaluating development coordination of island microgrid

Abstract

The invention discloses a method for evaluating the development coordination of an island microgrid. The method comprises the following contents: 1) analysing from the four aspects of distributed power side, load side, national economy and environment of the island microgrid to construct a development coordination evaluation index system for the island microgrid; 2) carrying developed illustration on coordination indexes with island microgrid characteristics, and establishing a corresponding calculation model; 3) improving a rough set theory by virtue of a multi-interval partition method; 4) determining an index weight matrix by virtue of the improved rough set theory; 5) fusing the weight matrix by virtue of a robust regression algorithm, and determining index weight values; 6) analysing the influence of each index in the island microgrid and the conditions which need to be met during planning and construction according to each index weight, and outputting a development coordination evaluation report for the island microgrid. The evaluation system and evaluation method disclosed by the invention are capable of scientifically and objectively evaluating the development coordination of island microgrids with different structures. Therefore, scientific guidance basis can be provided for the planning and construction for the island microgrids.

Description

technical field [0001] The invention relates to a construction and evaluation method of a micro-grid coordination index system, in particular to an island micro-grid development coordination index system and an evaluation method. Background technique [0002] Facing the challenges of fossil energy consumption and environmental degradation, distributed power generation methods such as micro diesel engines, wind power, and photovoltaic power generation have been widely used. But this distributed generation is affected by the distribution and geographical environment of renewable energy. In order to flexibly manage and control this power generation method, scholars have proposed the concept of microgrid. Microgrid refers to a small power generation and distribution system composed of distributed power generation (DG), energy storage devices, related loads and power electronic devices. This kind of system can run in parallel with the large power grid, or it can run in an islan...

AI Technical Summary

Problems solved by technology

However, these indicators cannot be directly used in the coordination research of isolated grid development

Moreover, the evaluation method is also based on a single subjective and objective method, which fails to comprehensively consider subjective and objective factors, while the combined weighting method cannot effectively reduce the influence of outliers

Therefore, poor coordination evaluation and planning and construction guidance for isolated grid development

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