Intelligent electric meter fault rate estimation method and system under multi-environmental stress

A smart meter and failure rate technology, applied in the measurement of electrical variables, measuring devices, instruments, etc., can solve the problems of aging equipment, increasing the difficulty of smart meters, and difficulty in collecting a large number of effective smart meter fault samples.

Pending Publication Date: 2021-10-08
国网山东省电力公司营销服务中心(计量中心) +2
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Problems solved by technology

Smart meters contain a large number of electronic components, which are prone to aging under extreme environmental conditions after long-term operation, resulting in equipment failure
Due to the wide distribution and large number of smart meters, it is difficult to collect a large number of effective smart meter failure sample information, and the noise interference in the samples also increases the difficulty of predicting the failure rate of smart meters

Method used

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  • Intelligent electric meter fault rate estimation method and system under multi-environmental stress
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  • Intelligent electric meter fault rate estimation method and system under multi-environmental stress

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Embodiment Construction

[0052] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0053] In the description of the present invention, the meaning of several means one or more, and the meaning of multiple means two or more than two. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number . If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number...

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Abstract

The invention discloses an intelligent electric meter fault rate estimation method and system under multi-environmental stress. The method comprises the steps of obtaining historical fault rate data of intelligent electric meters in different types of environmental regions, performing noise point detection based on a weighted local outlier factor of a weighted Euclidean distance, cleaning noise data, and obtaining a historical sample set; determining the form of a kernel function, and optimizing hyper-parameters of the kernel function; establishing a Gaussian process regression model, and training and testing the Gaussian process regression model by using the historical sample set; and inputting fault sample data of the to-be-tested intelligent electric meter, eliminating noise data based on the weighted local outlier factor of the weighted Euclidean distance, and obtaining the reliability of the to-be-tested intelligent electric meter through the trained Gaussian process regression model. According to the method, the change trend of the fault rate of the intelligent electric meter along with time under multi-environment stress can be effectively evaluated, and the reliability of the fault rate can be accurately solved.

Description

technical field [0001] The invention relates to the technical field of fault detection of smart electric meters, in particular to a method and system for predicting the fault rate of smart electric meters under multiple environmental stresses. Background technique [0002] With the advancement of smart grid construction, smart meters have been widely used in industrial and urban electric energy measurement. In recent years, with the increasing demand for high-reliability measurement of smart energy meter failure rate, the evaluation and prediction of smart energy meter failure rate has important guiding significance in establishing relevant reliability standards. A smart meter contains a large number of electronic components, which are prone to aging and equipment failure after long-term operation under extreme environmental conditions. Due to the wide distribution and large number of smart meters, it is difficult to collect a large number of effective smart meter failure s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 陈祉如代燕杰郭亮荆臻张志杜艳赵曦董贤光
Owner 国网山东省电力公司营销服务中心(计量中心)
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