Comprehensive evaluation index weight quantification method and system in consideratioin of microgrid functional characteristics

Abstract

The invention provides a comprehensive evaluation index weight quantification method and system in consideratioin of microgrid functional characteristics, and the method comprises the steps: constructing a microgrid comprehensive evaluation system, and calculating the subjective weight and objective weight of each evaluation index; and determining the weight ratio of the subjective weight to the objective weight of the power supply guarantee-type microgrid or the economic microgrid by taking the optimal accuracy value as a target based on a support vector machine. According to the method, thesubjective and objective weight ratio of the evaluation system is optimized based on the combined evaluation theory and the support vector machine classification model, the importance degree of the index can be objectively and quantitatively analyzed, and the actual meaning and property of the index can also be considered. Meanwhile, by combining the functional characteristics of various types ofmicrogrids, guidance is provided for system operation performance evaluation of various types of micro-grids in a targeted manner, the method is suitable for evaluating a multi-target complex micro-grid system, and evaluation personnel can conveniently and scientifically and reasonably evaluate the microgrid system by integrating various factors and expected targets.

Description

technical field [0001] The present invention relates to the technical field of comprehensive evaluation of micro-grids, in particular to a method and system for quantifying the weights of comprehensive evaluation indicators taking into account the functional characteristics of micro-grids. Background technique [0002] Under the dual pressure of environmental protection and energy depletion, microgrid, as an effective means to realize the utilization of renewable energy in various forms and scales, has huge development potential and profit space. As a small power distribution system, the evaluation of the reliability, economy and environmental protection of microgrid is an important topic in the field of microgrid research. At present, in the absence of a complete micro-grid technology evaluation standard system, only a small number of regions have carried out the construction of micro-grid projects, which restricts the development of renewable energy. [0003] A reasonable...

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Problems solved by technology

The above inventions all use a single subjective or objective evaluation method to determine the index weight value, and there are problems such as the evaluation result is too subjective or the evaluation result does not necessarily meet the actual meaning of the target.

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