CRH380B系列动车组继电器寿命评估技术研究  

Research on relay life assessment technology for CRH380B EMU

作　　者：李佳欣 刘云[1] 裴春兴 李娜 LI Jiaxin;LIU Yun;PEI Chunxing;LI Na(School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China;Technology Research Center,CRRC Tangshan Co.,Ltd.,Tangshan 063035,China)

机构地区：[1]北京交通大学电子信息工程学院,北京100044 [2]中车唐山机车车辆有限公司技术研究中心,河北唐山063035

出　　处：《中国测试》2020年第9期82-89,118,共9页China Measurement & Test

基　　金：国家重点研发计划项目(2016YFF0203400)。

摘　　要：动车组继电器是列车的主要元器件之一,其寿命的评估对动车组的安全正常运行至关重要。利用Fick扩散理论和Larson-Miller分析法建立继电器的接触电阻和吸合时间性能退化模型。利用试验台对动车组未安装使用、已运营1200000 km和故障3种类型的继电器进行可靠性寿命试验,根据实验数据并利用Matlab中最小二乘法非线性拟合对退化模型中的未知参数进行估计。根据SSE之和最小原则选取继电器特性参数的最优退化模型,根据特性参数的失效阈值得到不同试验温度下的寿命特征量,并利用该寿命特征量,对阿伦尼斯模型中的未知量进行参数估计,实现继电器在常温下的可靠性寿命评估。最后通过试验验证该方法的正确性。研究结果为CRH380B型动车组继电器的安全运用和维护维修提供依据。The realy of EMU is one of the main apparatus,and the realy life assessment is of utmost importance to safe and normal preration of EMU.The Fick diffusion theory and Larson-Miller analysis method are used to establish the contact resistance and absorption time performance degradation model of the relay.The reliability life test was carried out on the test rigs for three types of relays that were not installed and used by the EMU,and that had operated 1.2 million kilometers and faults.According to the experimental data,the least squares nonlinear fitting in Matlab was used to fit the unknown parameters in the degradation model.An estimate was made.According to the minimum principle of SSE sum,the optimal degradation model of the relay characteristic parameters is selected,and the life characteristic quantity at different test temperatures is obtained according to the failure threshold of the characteristic parameters.And using the life feature quantity,the unknown parameters of the Arrhenius model are estimated,and the reliability life evaluation of the relay at normal temperature is realized.Finally,the method is verified to be correct in the experiment.The research results provide basis for safe utilization,maintenance and repair of the high voltage apparatus system of CRH380B EMU.

关 键 词：继电器 Fick扩散理论 Larson-Miller分析法 剩余寿命 

分 类 号：TM933[电气工程—电力电子与电力传动]