Transformer substation energy efficiency assessment method based on AHP

Abstract

The present invention discloses a transformer substation energy efficiency assessment method based on an AHP (analytic hierarchy process). The method comprises: acquiring n index values for m to-be-assessed transformer substations; establishing an original index data matrix based on a gray relational analysis method, and carrying out standardized processing to generate a to-be-assessed index data matrix; establishing an index hierarchical structure, determining a relative weight,relative to a top level index, of each energy efficiency assessment index of a bottom layer of the index hierarchical structure to acquire a relative weight matrix; as for the to-be-assessed index data matrix, separately calculating an index value of each energy efficiency assessment index of each to-be-assessed transformer substation after the standardized processing, and a correlation coefficient between reference values of corresponding energy efficiency indexes in a reference line, thereby acquiring a correlation coefficient matrix; and calculating an integrated assessment result matrix of m to-be-assessed transformer substations. According to the method disclosed by the present invention, a reasonable degree of energy efficiency of the transformer substations can be analyzed, a power saving magnitude before and after reconstruction of the transformer substations can also be analyzed and assessed, so that the method has the advantages of high data assessment accuracy, and high-speed and efficient assessment.

Description

technical field [0001] The invention relates to the field of smart grids, in particular to a substation energy efficiency evaluation method based on the analytic hierarchy process. Background technique [0002] In the actual distribution network, the substation, as the hub link between power generation, transmission and distribution, accounts for the main part of the energy consumption of the entire distribution network. In order to ensure the safe, economical and green operation of the substation, it is required to conduct a comprehensive energy efficiency assessment on the equipment factors, operation factors, building factors and environmental factors of the substation, that is, to establish an energy efficiency evaluation index system. At present, the commonly used method for substation energy efficiency assessment is the analytic hierarchy process. The analytic hierarchy process divides each index and calculates the relative weights among the indexes of different layer...

AI Technical Summary

Problems solved by technology

However, the Analytic Hierarchy Process can only be used to analyze the rationality of the energy efficiency of the substation, and it cannot really obtain the energy saving before and after the transformation of the substation.

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