摘要
针对传统电表全寿命周期预测方法性能不足的问题,提出一种基于多应力退化模型的电表全寿命周期预测方法。该方法选择电表性能敏感参数及阈值,进行加速退化实验,确定温度应力、湿度应力以及电应力对敏感参数的影响,从而构建电表性能轨迹退化模型,包括退化轨迹模型选取、模型参数估计、最小伪寿命分布模型建立等,在上述基础上实现电表全寿命周期预测。结果表明:与三种传统电表全寿命周期预测方法相比,该预测方法得到的电表全寿命周期变化曲线拟合度更接近1,该方法的预测结果更符合智能电表实际使用情况,具有较好的优越性能。
In order to solve the problem of insufficient performance of the traditional life cycle prediction method of electric meter,a life cycle prediction method of electric meter based on multi-stress degradation model is proposed. In this method,the performance sensitive parameters and threshold of the meter are selected,the accelerated degradation experiment is carried out,and the effects of temperature stress,humidity stress and electrical stress on the sensitive parameters are determined,and the degradation model of the meter performance trajectory is constructed,including the selection of the degradation trajectory model,the estimation of the model parameters and the establishment of the minimum pseudo-life distribution model. On the basis of the above,the whole life cycle prediction of the meter is realized. The results show that compared with the three traditional methods for predicting the life cycle of electric meters,the whole life cycle prediction method is used to predict the whole life cycle of electric meters. The fitting degree of life cycle change curve is closer to 1. The prediction results of this method are more in line with the actual application of intelligent electric meter and have better performance.
作者
杨建
金丽
曲翀
阚妍
梁海涛
YANG Jian;JIN Li;QU Chong;KAN Yan;LIANG Hai-tao(Institute of Electric Power Science,State Grid Inner Mongolia Eastern Power Co.,Ltd.,Hohhot 010000,China;Fujian Networking Technology Development Co.,Ltd.,Fuzhou 350003,China)
出处
《电子设计工程》
2020年第3期111-114,119,共5页
Electronic Design Engineering
基金
国家青年科学基金项目(52660417000L)。
关键词
多应力退化模型
电表
寿命周期预测
伪寿命
multi-stress degradation model
ammeter
life cycle prediction
pseudo-life
