A method for estimating electric energy metering error

Abstract

The invention relates to an electric energy measuring error estimation method. The method comprises the following steps: preprocessing metering data measured by an electric energy metering device to obtain a metering error sequence; performing wavelet conversion decomposition on the metering error sequence to obtain multiple groups of error sequence components; constructing a robust extreme learning machine model, regarding each group of error sequence component and the measured metering data as the input quantity to add in the robust extreme learning machine model as the input quantity, thereby obtaining an error prediction value of each group of error sequence component; adding the obtained error prediction values to predict the next generation of error value; preprocessing the error value to obtain the new metering error sequence, updating the measured metering data, performing iterative updating and cyclically predicting. Through the electric energy metering error estimation methodprovided by the invention, the rule in the original signal is extracted through the application of the wavelet conversion decomposition and the robust extreme learning machine model, the prediction difficulty is greatly reduced, the prediction precision and operation speed under the existence of the noise condition are improved.

Description

technical field [0001] The present invention relates to the technical field of electric energy measurement error analysis, and more specifically, relates to an electric energy measurement error estimation method. Background technique [0002] In the electricity market, the readings of electric energy metering devices are used as the basis for transaction settlement, and its importance is gradually increasing for both parties to the transaction. In the process of using the electric energy metering device, the power supply company has also changed its function from self-clearing to transaction clearing, which puts forward stricter requirements on the accuracy of electric energy metering. [0003] The on-site verification of traditional electric energy metering devices is to calibrate its metering chip under actual operating conditions, calculate the value of each register through the error algorithm, and complete the error verification. This method actually regards the meterin...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for estimating electric energy measurement errors in order to overcome the technical defects that the existing electric energy measurement error estimation method cannot realize real-time on-line verification and monitoring, and cannot meet the requirements of fine management

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