摘要
元器件应力法是当前适合于电子式电能表可靠性预计的工程实用方法,但采用工作电应力预计间歇工作模式元器件可靠性存在不足。本文基于元器件应力法,提出了间歇工作模式下的可靠性预计模型,分析了采用该模型的必要性;然后分析并简化了该模型,并对简化模型的精确度进行了分析;进而给出了预计思路和基本步骤。最后,以一款单相电子式复费率CPU卡预付费电能表为例,采用本文方法推导了其可靠性指标,验证了方法的合理性和工程实用性。
Parts stress method is a practical engineering method to predict electronic electricity meter（EEM） reliability at present.However,there exist some deficiencies when predicting component reliability under intermittent operation state based on component＇s operating electrical stress.Considering component intermittent operation state,this paper proposes a novel reliability prediction model and the necessity using this model is analyzed,then the model is analyzed and simplified,and the corresponding prediction procedure is proposed.Lastly,this paper takes a single-phase prepayment EEM for example,predicts its reliability characteristics,which proves the great theoretical and engineering value of the proposed method.
出处
《华北电力技术》
CAS
2011年第9期8-12,共5页
North China Electric Power
关键词
电子式电能表
失效率
可靠性预计
间歇工作模式
electronic electricity meter
failure rate
reliability prediction
intermittent operation state
