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| A Life Prediction Method of the Smart Meter Based on Weibull Distribution and Maximum Likelihood Estimation |
| WANG Rui, YANG Fan, YUAN Jing, XU Xin-ping |
| Chongqing Academy of Metrology and Quality Inspection, Chongqing 401123, China |
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Abstract With the extensively use of the smart meter, it becomes necessary to predict the reliability and life of the smart meter instead of the traditional on-site inspection method. A prediction method of the failure rate and life of the smart meter based on Weibull distribution was proposed. The shape parameter and scale parameter of Weibull distribution were calculated through maximum likelihood estimation method. The proposal method was showed to be reliable by predicting the average life, rated life and median life based on the status from MDS system of State Grid Corporation. And the predicted results are possible to help the performance evaluation and rotation work of the smart meter in the future.
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Received: 10 September 2019
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2019, Vol. 40 
