Electronic transformer credibility evaluation method and device based on whole-network domain evidence set

Abstract

The invention discloses an electronic transformer credibility probability evaluation method and device based on a whole-network domain evidence set. The method comprises the steps of clustering high-dimensional data sets of an electronic transformer to obtain different clusters of the clustered high-dimensional data sets of the electronic transformer, and removing noise point data; outputting a predicted credibility probability according to the credibility probabilities of the high-dimensional data sets of the electronic transformer and the different clusters of the high-dimensional data setsof the electronic transformer, and training a pre-established XGBoost model to obtain a trained XGBoost model; and inputting the high-dimensional data set of the to-be-evaluated electronic transformerinto the trained XGBoost model to obtain a predicted credibility probability, so that whether the electronic transformer has a metering error or not is judged, and the credibility of the measured data of the electronic transformer is evaluated under the condition of not depending on a standard transformer.

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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