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Fault phenomenon correlation analysis method for removed electric energy meters

A correlation analysis, energy meter technology, applied in the measurement of electrical variables, electronic waste recycling, recycling technology, etc., can solve the problem of not finding published patent documents, etc., to achieve the effect of improving reliability

Inactive Publication Date: 2018-01-02
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +3
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Problems solved by technology

[0004] After searching, no published patent documents of similar technologies were found

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  • Fault phenomenon correlation analysis method for removed electric energy meters
  • Fault phenomenon correlation analysis method for removed electric energy meters
  • Fault phenomenon correlation analysis method for removed electric energy meters

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with specific examples, and the following examples are only descriptive, not limiting, and cannot limit the protection scope of the present invention with this.

[0021] A method for analyzing the correlation of failure phenomena of disassembled electric energy meters. This method is based on the correlation analysis method of electric energy meters based on Pearson correlation coefficient. As the analysis object, various quality failures, scrap rates, verification results, etc. of the electric energy meters in the statistical object are used as the analysis elements to make a reasonable evaluation of the correlation of electric energy meter failures.

[0022] The Pearson correlation coefficient is calculated as follows:

[0023] The Pearson correlation coefficient between two variables is defined as the quotient of the covariance and standard deviation between the two variables:

[0024] ...

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Abstract

The invention relates to a fault phenomenon correlation analysis method for removed electric energy meters. The method comprises the following steps: 1) distinguishing electric energy meters accordingto fault types and fault quantities of the removed electric energy meters, and dividing the electric energy meters into a single fault type and a composite fault type; (2) eliminating electric energymeter faults caused by user or worker installation problems by virtue of troubleshooting; (3) dividing the troubleshot electric energy meters into different units according to different batches, andrespectively calculating a fault occurrence correlation coefficient for the electric energy meters in each unit; and (4) further analyzing fault occurrence time of electric energy meters correspondingto correlation faults with respect to correlation faults with the correlation coefficient exceeding 0.4, and judging whether correlation fault belongs to the electric energy meter correlation fault in the batch. According to the analysis method disclosed by the invention, the correlation of the electric energy meter faults can be accurately and reasonably evaluated, so that the reliability of electric energy meter assets is improved, and reasonable correlation pre-estimation is made for electric energy meter correlation fault disposal.

Description

technical field [0001] The invention belongs to the field of electric energy metering, in particular to a method for analyzing the correlation of fault phenomena when an electric energy meter is disassembled. Background technique [0002] At present, according to statistics, more than 160,000 electric energy meters have been disassembled by Tianjin Electric Power Company. Since there is a certain relationship between the failure of the dismantled meter, this relationship cannot be realized through general statistical analysis. Therefore, it is hoped that a An effective analysis method can reasonably judge the accompanying faults related to the electric energy meter. In addition, it can reasonably predict the frequent occurrence of electric energy meter faults, get early warnings for frequent faults, and improve the reliability of metering assets. [0003] With the development and application of the automatic verification system of electric energy metering devices, especially...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G01R35/04
CPCY02W30/82
Inventor 滕永兴曹国瑞李野朱逸群孙淑娴于学均何黎菲董得龙郑安刚祝恩国刘兴奇邹和平巫钟兴
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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