A data-driven comprehensive energy efficiency evaluation method of substation

Abstract

The invention relates to a data-driven comprehensive energy efficiency evaluation method of a substation based on data driving, comprising the following steps: dividing the energy efficiency index ofthe substation and collecting various energy consumption data of the substation to be evaluated; establishing the comprehensive energy efficiency evaluation matrix of the substation to be evaluated and obtaining the energy efficiency evaluation index matrix of the substation to be evaluated after the standardization of the same trend; obtaining the evaluation vector of projection value and constructing the distance function and intra-class density function between classes,Constructing maximum information entropy function,based on maximum information entropy and projection pursuit, establishinga substation comprehensive energy efficiency evaluation model, and using the differential evolution algorithm to solve the coupling model, and obtaining the vector of comprehensive energy efficiencyevaluation value of the substation to be evaluated. The invention takes the collected energy consumption data of the substation as a driving force, constructs a coupling model of maximum information entropy and projection pursuit, and adopts a differential evolution algorithm to solve the problem, thereby reducing the uncertainty of the projection vector distribution, and making the obtained comprehensive energy efficiency evaluation result of the substation more objective and reliable.

Description

technical field [0001] The invention belongs to the technical field of substations, in particular to a data-driven comprehensive energy efficiency evaluation method for substations. Background technique [0002] Substations are the key nodes for converting and transmitting electric energy in the power system, and there are many of them. However, in the actual operation process, due to the old facilities and unreasonable operation mode of the substation, the power loss of the substation is relatively large and the energy efficiency is low. Improving energy efficiency through energy-saving transformation of substations plays an important role in reducing network losses and building green and low-carbon power grids. An objective and reliable evaluation of the comprehensive energy efficiency of substations can provide scientific guidance for energy-saving transformation of substations. [0003] The energy consumption of a substation is not only related to the primary equipment...

AI Technical Summary

Problems solved by technology

[0003] The energy consumption of a substation is not only related to the primary equipment in the substation, but also related to a large number of substation electrical equipment and the environment in which the substation is located. Its energy efficiency evaluation system is complex and high-dimensional, and different indicators have large differences in attributes and magnitudes.

At present, fuzzy comprehensive evaluation methods, analytic hierarchy process, etc. are often used to evaluate the energy efficiency of substations, but the existing methods require evaluators to subjectively score various evaluation indicators, which is subjective and poor in objectivity

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