高电压技术2023，Vol.49Issue(12)：4971-4981,11.DOI:10.13336/j.1003-6520.hve.20221773
基于振动信号的交流接触器触头系统退化阶段划分
Degradation Phase Division of AC Contactor Contact System Based on Vibration Signal
摘要
Abstract
The problems of high redundancy of vibration signal and low accuracy of classification in the degradation stage exist in AC contactor contact system degradation,therefore,a method based on Spearman's rank correlation coefficient(SRCC)and fuzzy C-means clustering(FCM)is proposed to divide the degradation phase of the contact system.Firstly,the vibration signals of the opening and closing stages of the contact system throughout the life cycle are obtained through the full life test of the AC contactor,and the time domain and frequency domain characteristics reflecting the degradation state of the contacts are extracted from the results.Secondly,SRCC and principal component analysis are used to select feature and reduce feature dimensionality,and to construct performance degradation indicators.Thirdly,unsupervised learning(UL)FCM is introduced as a theoretical basis for dividing the contact system into 2 to 5 degradation stages.Fi-nally,silhouette coefficient(SC),Calinski Harabasz score(CHS)and Dacies Bouldin index(DBI)are selected to evaluate the clustering effect internally,and five supervised classifiers are used to verify the accuracy of this method.The results show that the internal evaluation is the best when the contact system is divided into three degradation stages,the average recognition accuracy of five classifiers for the three degradation stages can reach 95.54％,and the degradation stage divi-sion is the most reasonable.The proposed method can be adopted to effectively solve the problem of signal redundancy and low accuracy of phase division,which can accurately realize the division of degradation phase of AC contactor con-tact system.关键词
交流接触器/振动信号/斯皮尔曼等级相关系数/FCM聚类/退化状态/阶段划分Key words
AC contactor/vibration signal/SRCC/FCM clustering/degraded state/stage division引用本文复制引用
刘树鑫,周柱,刘洋,曹云东,蒋幸伟,李静..基于振动信号的交流接触器触头系统退化阶段划分[J].高电压技术,2023,49(12):4971-4981,11.基金项目
辽宁省科技重大专项(2020JH1/10100012) （2020JH1/10100012）
辽宁省教育厅项目(LJGD2020001) （LJGD2020001）
沈阳中青年科技创新人才计划(RC210354).Project supported by Major Science and Technology Projects of Liaoning Province(2020JH1/10100012),Project of Liaoning Provincial Department of Education(LJGD2020001),Shenyang Young and Middle-aged Scientific and Technological Innovation Talents Program(RC210354). （RC210354）
