Method and device for evaluating the credibility of electronic transformers based on the evidence set of the whole network

Abstract

The invention discloses a method and device for evaluating the reliability probability of electronic transformers based on evidence sets in the entire network domain, which clusters high-dimensional data sets of electronic transformers to obtain clustered high-dimensional electronic transformers For different clusters of the data set, the noise point data is eliminated; according to the reliability probability of the electronic transformer high-dimensional data set and the different clusters of the electronic transformer high-dimensional data set, the output is the predicted reliability probability, which is based on the pre-established The XGBoost model is trained to obtain the trained XGBoost model; the high-dimensional data set of the electronic transformer to be evaluated is input into the trained XGBoost model to obtain the predicted reliability probability, so as to judge whether there is a measurement error in the electronic transformer , without relying on standard transformers, to evaluate the reliability of electronic transformer measurement data.

Description

technical field [0001] The invention belongs to the technical field of digital electric energy measurement, and in particular relates to a method and device for evaluating the credibility of electronic transformers based on evidence sets in the entire network domain. Background technique [0002] At present, electronic transformers are rarely used for digital energy metering in China. Only 4 provinces such as Jiangxi have carried out demonstration applications for digital energy metering, which is far from meeting the development requirements of digital energy metering for smart grids. Due to the lack of electronic transformer measurement operation situation analysis and risk assessment means, the development process of electronic transformer for digital electric energy measurement application is restricted. The technical difficulties of electronic transformer measurement operation situation analysis and risk assessment are mainly reflected in four aspects: First, it is diff...

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Problems solved by technology

The technical difficulties of electronic transformer measurement operation situation analysis and risk assessment are mainly reflected in four aspects: First, it is difficult to adapt to the scale of electronic transformers by comparing errors with traditional transformers for electronic transformer state analysis methods Second, under the condition of no standard instrument, it is necessary to use data analysis methods to analyze the operation situation of electronic transformers. Carry out relevant analysis; the third is the lack of data collected by electronic transformers for digital electric energy metering application risk assessment methods, and it is impossible to evaluate the application risks of electronic transformer digital electric energy metering and power processing in abnormal states, which makes digital electric energy metering application risks difficult. Fourth, there are few on-site detection equipment and special tooling for electronic transformers, and the on-site detection items and methods are not perfect. The risk of electric energy metering application is further increased

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