Online comprehensive error calibration method for intelligent electric energy meters

A smart electric energy meter and comprehensive error technology, which is applied in the field of online comprehensive error calibration of smart electric energy meters, can solve the problem of not finding published patent documents, etc., achieve significant economic and social benefits, reduce electronic waste, and reduce enterprise operation and maintenance costs. Effect

Inactive Publication Date: 2018-01-23
TIANJIN ELECTRIC POWER TECH DEV CO LTD
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[0005] After searching, no published patent documents of similar technologies were found

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  • Online comprehensive error calibration method for intelligent electric energy meters
  • Online comprehensive error calibration method for intelligent electric energy meters
  • Online comprehensive error calibration method for intelligent electric energy meters

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[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0041] An online comprehensive error calibration method for a smart electric energy meter, characterized in that: the specific steps of the method are:

[0042] (1) The smart energy meter cluster is installed to form a tree topology structure, and the basic flow conservation model of the smart energy meter cluster can be obtained; The operating conditions of the meter and each sub-meter;

[0043] ⑵According to the tree topology formed by the clusters of smart meters, virtual branches are introduced to dynamically modify the cluster topology model of smart meters to obtain the flow conservation algorithm model;

[0044] The sum of the loss values ​​of the virtual branch instead of the line loss, the ...

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Abstract

The invention relates to an online comprehensive error calibration method for intelligent electric energy meters. The method comprises steps: (1) the intelligent electric energy meter cluster is arranged to form a tree topology structure; (2) a flow conservation algorithm model is acquired; (3) the flow data of the intelligent electric energy meter cluster during operation are recorded for multiple times, and the operation conditions of the intelligent electric energy meter cluster are recorded at the same time; (4) the flow data is subjected to equivalent conversion; (5) errors during the current period are calculated; (6) the calculation result in the former step is corrected and uncertainty evaluation is carried out; and (7) comprehensive errors are calculated and acquired. The method of the invention aims in that in a non laboratory condition, after the scope of the influence amount beyond the laboratory condition, the environment condition and the test wiring condition are quantized preliminarily, the online operating meter data in different conditions are used as available values for calculation, correct calibration in the non laboratory condition is realized, a full data sample thinking mode is applied, mass computer data of a power user power consumption information acquisition system are mined, the use of an external standard instrument is not needed, the cost is reduced, and the efficiency is improved.

Description

technical field [0001] The invention belongs to the field of electric energy measurement, in particular to an online comprehensive error calibration method for an intelligent electric energy meter. Background technique [0002] The accuracy of electric energy metering devices in operation has always been a hot issue that residents and State Grid Corporation are most concerned about. At present, the State Grid Corporation uses statistical analysis methods or adding online detection equipment to realize the supervision and evaluation of the operating errors of smart energy meters. Although the statistical analysis method has changed the single-phase electric energy meter used by residents in the past from regular rotation to random inspection, it is still the control of the overall batch; adding online monitoring equipment will definitely increase the purchase and maintenance costs of the enterprise. This method maintains Costly and limited. [0003] The overall error of the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
Inventor 董得龙郭景涛张一萌李野贺欣付保军于树明于蓬勃于香英张应田李刚曹国瑞滕永兴杨光孙淑娴朱逸群何泽昊
Owner TIANJIN ELECTRIC POWER TECH DEV CO LTD
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