基于性能退化的铝电解电容寿命预测方法研究  

Research on Life Prediction of Aluminum Electrolytic Capacitors Based on Performance Degradation

作　　者：王振[1,2] 肖凯 张乔木 邹延生 WANG Zhen;XIAO Kai;ZHANG Qiaomu;ZOU Yansheng(Maintenance&Test Center,CSG EHV Power Transmission Company,Guangzhou Guangdong 510663,China;Joint Laboratory for Safe Operation of DC Transmission Equipment and Submarine Cables,Guangzhou Guangdong 510663,China;The Fifth Electronics Research Institute of Ministry of Industry and Information Technology,Guangzhou Guangdong 511370,China)

机构地区：[1]中国南方电网超高压输电公司检修试验中心,广东广州510663 [2]直流输电装备与海底电缆安全运行联合实验室,广东广州510663 [3]工业和信息化部电子第五研究所,广东广州511370

出　　处：《电子器件》2024年第5期1247-1254,共8页Chinese Journal of Electron Devices

基　　金：高压直流换流阀TVM板健康状态评估技术及其测试装置开发项目(CGYKJXM20200348)。

摘　　要：应用表明铝电解电容是电源系统中故障率最高的元件,是影响电源系统长期运行可靠性的关键器件。为了评估铝电解电容在长期应用条件下的可靠性与寿命,对铝电解电容退化机理与退化模型进行研究分析,在已有模型研究成果的基础上,结合铝电解电容加速退化试验数据,提出了一种基于幂函数的电容量退化轨迹模型。采用该退化轨迹模型,开展了基于退化量分布的铝电解电容退化数据统计分析与寿命预测。根据寿命预测结果,某型铝电解电容在正常工作条件下95%可靠寿命超过18年。The application shows that the aluminum electrolytic capacitor is the component with the highest failure rate in the power supply system,and is the key component affecting the long-term operation reliability of the power supply system.In order to evaluate the reliability and life of aluminum electrolytic capacitors under long-term application conditions,the degradation mechanism and model of aluminum electrolytic capacitors are studied and analyzed.On the basis of existing degradation model research results,combined with the accelerated degradation test data,a capacitance degradation trajectory model based on power function is proposed.Using this degradation trajectory model,statistical analysis of aluminum electrolytic capacitor degradation data based on the degradation amount distribution is carried out,and life prediction of aluminum electrolytic capacitor is performed.According to the life prediction results,the 95%reliable life of an aluminum electrolytic capacitor exceeds 18 years under normal working conditions.

关 键 词：铝电解电容 寿命预测 退化量分布 加速退化试验 可靠性评估 

分 类 号：TM535[电气工程—电器] TN607[电子电信—电路与系统]