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Online remote calibration method for intelligent electric meter based on measurement data analysis

A technology for smart meters and measuring data, applied in the field of smart meter verification in power systems, can solve problems such as rough analysis results and inability to achieve remote verification of energy meters, avoid data oversaturation, and improve analysis speed and accuracy. , the effect of improving the correction ability

Active Publication Date: 2019-11-19
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Relevant research results qualitatively divide the energy meter into several states, and the analysis results are relatively rough, and it is impossible to realize accurate remote calibration of energy meters based on data analysis

Method used

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  • Online remote calibration method for intelligent electric meter based on measurement data analysis
  • Online remote calibration method for intelligent electric meter based on measurement data analysis
  • Online remote calibration method for intelligent electric meter based on measurement data analysis

Examples

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Embodiment 1

[0043] An online remote calibration method for smart meters based on measurement data analysis provided by an embodiment of the present invention, see Figure 1-Figure 5 , the remote verification method includes the following steps:

[0044] S11: Obtain information required for online remote calibration of errors;

[0045] Among them, the information includes: station area and user information files, smart meter original measurement data time series.

[0046] In actual implementation, the original measurement data is mainly obtained by the smart meter data acquisition system based on AMI. The acquisition system architecture is slightly different for different regions. The physical architecture of AMI-based smart meter data acquisition is as follows: figure 2As shown, a concentrator is installed under the public distribution transformer, and the concentrator is directly connected or connected to a smart meter through a collector to realize the collection of electricity cons...

Embodiment 2

[0141] Combined with specific calculation examples, calculation formulas, Figure 6-Figure 10 Carry out feasibility verification to the remote verification method mentioned in embodiment 1, specifically include:

[0142] In order to verify the effectiveness of the proposed method, the embodiment of the present invention takes the actual smart meter measurement data of a certain city in my country from February to May 2018 as the object of analysis, and the data collection frequency is 15 minutes. Among them, the station area under study contains a total electric energy meter of the station area and 185 user electric energy meters. The no-load or light-load data is filtered out through data preprocessing, and the measurement data groups of different periods are obtained as analysis samples. Set the value of the memory length L to 1000, and use this method to solve the smart meter operation error recursive estimation curve as follows Image 6 As shown, the error analysis result...

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Abstract

The invention discloses an online remote calibration method for an intelligent electric meter based on measurement data analysis. The method is based on power data. the method comprises the followingsteps of preprocessing an original measurement data time sequence by utilizing an improved fuzzy C-means clustering technology, removing measurement data under a light load working condition, and taking the measurement data as an input variable of an on-line remote calibration model; establishing an intelligent electric meter error solving equation on the basis of computing the line loss of a zonearea; estimating an intelligent electric meter operation error on the basis of a limit memory recursive least squares algorithm; checking and analyzing an intelligent electric meter error estimationresult; and performing a service assistant decision making through combination with an on-line remote calibration result of the intelligent electric meter. According to the method, the precision, efficiency and practicability of intelligent electric meter error estimation are improved based on power data analysis.

Description

technical field [0001] The invention relates to the field of smart meter verification in electric power systems, in particular to an online remote verification method for smart meters based on measurement data analysis. Background technique [0002] Smart meters are an important part of the smart grid, and are also the basis for grid operation control and trade settlement between power suppliers and consumers. The measurement results are directly related to the security of the power grid and whether the trade settlement between the two parties is fair and reasonable. Therefore, it is particularly important to determine the operating error status of smart meters. . [0003] At present, the dismantling and inspection of electric energy meters or periodic random inspections by professionals regularly carry instruments and equipment to the site are the main ways for electric power companies to verify the accuracy of smart electric meters. With the expansion of the grid scale, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 孔祥玉马玉莹王晟晨
Owner TIANJIN UNIV
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