Method for finding abnormal electric energy meter based on gray GM (1, 1) model

Abstract

The invention discloses a method for finding an abnormal electric energy meter based on a gray GM (1, 1) model. The method comprises the following steps that first, normally-measuring power utilization data of a user electric energy meter are obtained from a user power utilization system database; second, obtained data samples are arrayed according to the time sequence, original data are accumulated to form new regular data, a linear first-order differential equation is established for the new data, the model is subjected to identifying and parameter estimation, a prediction equation is obtained, and finally a short-term predicted value is obtained by regressive restoring; and third, an obtained load predicted value and a value collected by the user electric energy meter are compared, whether the user electric energy meter is normal is judged, and if an anomaly exists, a user is suspected of stealing electricity. The method for finding the abnormal electric energy meter based on the gray GM (1, 1) model has the advantages that a large number of samples are of no need, the high regularity of the samples is of no need, computing workload is low, operation cost is low, a mounted electric energy meter does not need to be transformed, manpower investment of an electric power company is lowered, and judging is accurate.

Description

technical field [0001] The invention relates to a method for finding abnormal electric energy meters based on a gray GM (1, 1) model. Background technique [0002] At present, the most widely used device for finding abnormal electric energy meters comprehensively uses computer technology, mobile communication technology, automatic control technology, etc., and adopts a combination of software and hardware. The most widely used at home and abroad is the abnormal operation of the intelligent networked electric energy meter The principle of the measurement and recording device is to install a load acquisition system at the load end to collect current and voltage signals, and use the channel of the load control device to transmit the data back, and then use the background analysis system to compare the calculated power data with the terminal itself The idea of ​​calculating and comparing the accumulated power consumption is to judge the user's measurement accuracy. After the de...

AI Technical Summary

Problems solved by technology

[0005] Increased wiring complexity;

[0006] The portability of this device is not high. When the installed device is used for the second time, a lot of manual disassembly and reinstallation are required, which increases the manpower input of the power company.

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