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Electric energy meter state evaluation method and device

A state evaluation and evaluation device technology, which is applied in measurement devices, measurement of electrical variables, complex mathematical operations, etc., can solve problems such as poor state evaluation accuracy of electric energy meters

Active Publication Date: 2021-05-04
GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a method and device for evaluating the state of an electric energy meter, which is used to solve the technical problem that the existing on-line monitoring technology has poor accuracy in evaluating the state of the electric energy meter

Method used

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  • Electric energy meter state evaluation method and device
  • Electric energy meter state evaluation method and device
  • Electric energy meter state evaluation method and device

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Embodiment 1

[0046] see figure 1 , Embodiment 1 of a method for evaluating the state of an electric energy meter provided in the embodiment of the present application, including:

[0047] Step 101, obtain the historical operating condition parameters of several electric energy meters in the station area, convert the historical operating condition parameters of each electric energy meter into operating condition parameter vectors, obtain the electric energy meter operating condition parameter matrix X of the station area, and convert each electric energy meter After comparing the historical working condition parameters of each electric energy meter with the preset threshold, the electric energy meters are classified, and the electric energy meter category matrix Y of the station area is obtained.

[0048] It should be noted that the station area refers to the power supply range or area of ​​(one) transformer. It can be understood that the concentrator collects the historical working condit...

Embodiment 2

[0072] see figure 2 , Embodiment 2 of a method for evaluating the state of an electric energy meter provided in the embodiment of the present application includes:

[0073] Step 201, obtain the historical operating condition parameters of several electric energy meters in the station area, convert the historical operating condition parameters of each electric energy meter into operating condition parameter vectors respectively, and obtain the electric energy meter operating condition parameter matrix X of the electric energy meter in the station area; Whether all the category parameters in the historical working condition parameters of an electric energy meter are within the preset threshold, if the electric energy meter is assigned a value of "1", otherwise the electric energy meter is assigned a value of "0", and the classification is carried out according to the assignment of each electric energy meter , to get the electric energy meter category matrix Y in the station are...

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Abstract

The invention discloses an electric energy meter state evaluation method and device, and the method comprises the steps of: taking historical working condition parameters of an electric energy meter as independent variables, taking the state of the electric energy meter as dependent variables, thus performing abstraction into a multivariate variable regression statistical analysis problem, however because the historical working condition parameters comprise multiple types of multi-dimensional information parameters, a certain correlation may exist among multi-dimensional information, that is, a certain serious multiple correlation may exist among independent variables. In order to solve the problem, a partial least square method is introduced, firstly, a matrix is established according to historical working condition parameters, then the matrix is divided, an evaluation model is established through the partial least square method, and the state of the electric energy meter is evaluated according to the evaluation model, the partial least square method can be used for analyzing the characteristics of a mode recognition problem under the conditions of small samples and multiple variables, and the problems of system noise and multiple linearity can be well solved, therefore the technical problem that the existing online monitoring technology is poor in electric energy meter state evaluation precision is solved.

Description

technical field [0001] The present application relates to the technical field of power electronics, in particular to a method and device for evaluating the state of an electric energy meter. Background technique [0002] Electric energy metering is the legal basis for electric energy trade and electricity fee settlement in the electric power industry. Electric energy meters for electric energy transaction settlement are generally installed in substations, power plants and user stations. The reliability and accuracy of electric energy measurement not only bears the responsibility of enhancing customer satisfaction, but also plays an important role in increasing enterprise management benefits. The operation management and maintenance of electric energy meters are the top priority of daily electric energy measurement technology management. [0003] Considering that there may be high temperature, high humidity, high salinity in the operating environment of the electric energy m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04G06F17/18G06K9/62
CPCG01R35/04G06F17/18G06F18/24
Inventor 霍梓航林国营李向锋曾争张思建王鹏张晓平
Owner GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD