单相智能电能表可靠性预计方法研究与实践

Research and practice of reliability prediction method for single phase smart electrical energy meter

单相智能电能表作为我国用户电量采集系统的主要组成部分,其高可靠性和长寿命决定着电网的正常运行。该文分析了目前用于电子产品的可靠性预计方法的特点和局限性,指出以Telcordia SR-332手册为理论依据的元器件应力法最适用于单相智能电能表可靠性预计且具有重要的理论和工程应用价值。将此方法应用于某厂家某一型号单相智能电能表的可靠性预计,对参数测试及各类应力的计算过程进行细化,得出相对精确的预计结果,然后对预计结果进行全面分析,最终提出改进措施。

As one of the main components of the user power acquisition system in China,the single phase smart meter has high reliability and long life,which determines the normal operation of the power grid. This paper analysed the characteristics and limitations of the method used to predict the reliability of electronic products,and pointed out that the Telcordia SR-332 manual for the theoretical basis of component stress method is expected to be the most suitable form reliability of single phase smart electric energy,which has important theoretical and engineering application value. This method of reliability prediction is applied to a manufacturer of a certain type of single phase smart electric energy meter,and the parameter test and all kinds of stress was in control. We obtained relatively accurate results,then made a comprehensive analysis of the expected results,and finally proposed improvement measures.