Testing method of accelerated degradation of intelligent electric energy meter

Abstract

The invention relates to a testing method of accelerated degradation of an intelligent electric energy meter. The method comprises the following steps: S1, determining a fault reason of a field electric energy meter; S2, selecting an accelerated stress type of an accelerated degradation test according to the fault reason determined in the step S1 and a diagnostic test result; S3, determining a maximum stress level through a diagnostic test and designing an accelerated stress combination; S4, determining degradation characteristic quantity, a failure threshold thereof, test sample quantity, distribution ratio, test end time and number of measurements according to requirements; S5, separately continuously applying corresponding stress combinations to all test samples, unloading stress combinations at set intervals, and testing required parameters till the test end time is achieved. Compared with the prior art, the testing method has high feasibility and operability, and is applicable toreliability assessment and analysis on intelligent electric energy meters by electric energy meter manufacturers and electric energy meter quality management departments.

Description

technical field [0001] The invention relates to the technical field of measurement equipment operation verification and detection, in particular to an accelerated degradation test method for an intelligent electric energy meter. Background technique [0002] In recent years, with the continuous advancement of the smart grid construction process of the State Grid Corporation of China, more and more smart energy meters have been put into on-site operation. In 2017, the number of on-site installations of smart energy meters within the State Grid Corporation has reached 400 million. Whether such a large number of smart energy meters can operate reliably and stably in the field for a long time is directly related to the fairness and justice of the power trading process. In addition, the reliability and stability of the smart energy meter, as the "data source" for knowing the customer's electricity consumption behavior, characteristics and habits, will also affect the quality of ...

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

However, with the unification of technical standards for smart energy meters and the improvement of design and manufacturing capabilities of energy meter manufacturers, the reliability of smart energy meters is getting higher and higher. Requirements for Reliability Analysis and Evaluation of Electric Energy Meter

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