基于自适应加权系数的智能表计使用寿命预测方法
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王军(1973),男,工程硕士,工程师,主要从事智能用电技术研究;Email:29986595@qq.com

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TM93

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许继集团科技项目(2017G37)


An intelligent meter life prediction method based on adaptive weighting coefficient
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    摘要:

    传统的基于威布尔分布拟合的方法,没有考虑智能表计内部不同的电路模块受不同的外部应力影响的差异性,忽略不同应力影响因子对智能表计寿命的影响。因此,该文提出一种基于自适应加权系数的智能表计使用寿命预测方法,实现基于表计整机预测算法的改进。该方法从产品故障历史数据着手,建立应力与历史原始失效率之间的关系,分别获取基于历史原始失效率的应力调整系数K和加权系数R,并利用该2个系数调整预测失效率以提高预测准确性。算例表明,所提方法可减少批次电能表剩余寿命误判率,提高预测准确度。工程应用中,所提方法可提供参考信息便于提前制定电能表采购计划进行批次轮换,避免出现大规模的电能表故障。

    Abstract:

    The traditional method is based on Weibull distribution fitting, which does not consider the difference of different circuit modules in the smart meter affected by different external stress, and lacks the influence of different stress factors on the life of the smart meter. So, an intelligent meter life prediction method based on adaptive weighting coefficient is proposed in the paper, which realizes an improvement of the whole meter prediction algorithm . This method starts from the historical data of product failure, finds out the relationship between the stress and the historical original failure rate, and obtains the stress adjustment coefficient K and the weighting coefficient R based on the historical original failure rate respectively. The stress adjustment coefficient K and the weighting coefficient R is utilized to modify the obtained predicted failure rate and achieve higher accuracy. The case study shows that this method can reduce the miscalculation rate of remaining life of batch electric energy meters, In the actual application process, the proposed method can provide the useful information for purchasing electric energy meters in advance for batch rotation, and avoid largescale failure of electric energy meters.

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王 军,李 飞,华 隽,等.基于自适应加权系数的智能表计使用寿命预测方法[J].电力科学与技术学报,2020,35(3):99-106.
WANG Jun, LI Fei, HUA Jun, et al. An intelligent meter life prediction method based on adaptive weighting coefficient[J]. Journal of Electric Power Science and Technology,2020,35(3):99-106.

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  • 在线发布日期: 2020-09-14
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