Electric energy meter life evaluation method based on accelerated degradation test
An accelerated degradation test and life evaluation technology, applied in the direction of measuring electrical variables, measuring devices, instruments, etc., can solve problems such as product reliability evaluation, gaps, and extended test time
Inactive Publication Date: 2018-09-18
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
View PDF3 Cites 10 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
If no sample fails in the test, or the number of failed samples is very small, then the test time can only be extended, otherwise the obtained failure time data cannot be used to evaluate the reliability of the product, or the obtained evaluation results are different from the actual situation. there is a big gap
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0024] In this embodiment, the electric energy meter is a smart electric energy meter, and an accelerated degradation test is adopted for it, and the process includes:
[0025] Step (1), determine the cause of the failure of the on-site electric energy meter.
[0026] Step (2), select the accelerated stress type of the accelerated degradation test according to the cause of failure determined in the step (1) combined with the results of the preliminary test. In this embodiment, temperature and humidity are selected as the accelerated stress of the accelerated degradation test.
[0027] Step (3), determine the maximum stress level and design the accelerated stress combination through the preliminary test.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM
Login to view more Abstract
The invention relates to an electric energy meter life evaluation method based on accelerated degradation test. The method comprises the following steps: 1, acquiring electric energy meter accelerateddegradation test data, and estimating the distributed parameter values of a degradation path model of the electric energy meter degradation characteristic quantity under different stress levels; 2, selecting an accelerated degradation model according to the type of acceleration stress, and calculating the false life values of the electric energy meter under different stress levels according to the failure thresholds of the degradation characteristic quantity in the test; 3, calculating acceleration factors corresponding to different stress levels according to the accelerated degradation model, and converting false life values of acceleration factors under different stress levels to the normal work stress level; 4, selecting the life distribution type of an electric energy meter, and estimating the unknown parameter values in a life distribution function; and 5, estimating by utilizing the life distribution function to obtain the life of the electric energy meter under a normal work stress level. Compared with the prior art, the method has the advantages that the life condition of the electric energy meter can be accurately estimated, and more conforms to engineering practice.
Description
technical field [0001] The invention relates to the technical field of measurement equipment operation verification and detection, in particular to a method for evaluating the life of an electric energy meter based on an accelerated degradation test. Background technique [0002] Through the reliability analysis and life evaluation of the smart energy meter, the manufacturer of the energy meter can discover the weak link of the product design or the quality defect of the components in advance, and make targeted improvements, thereby improving the quality of the smart energy meter as a whole. Ensure the long-term reliable and stable operation of the smart energy meter on site. [0003] Using traditional reliability evaluation methods to evaluate the reliability of smart energy meters requires a lot of time and labor costs. Therefore, the accelerated life test method is widely used to evaluate the reliability of smart energy meters. The accelerated life test only records the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Application Information
Patent Timeline
Login to view more Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 张垠朱彬若王新刚江剑峰顾臻朱铮
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap