电气传动2026，Vol.56Issue(3)：88-96,9.DOI:10.19457/j.1001-2095.dqcd25848
基于振动特征的GIS触头电接触状态诊断方法研究
Research on Diagnosis Method for Electrical Contact State of GIS Contact Based on Vibration Characteristic
摘要
Abstract
The contact electrical contact fault of gas insulated switchgear(GIS)will affect its electrical performance.A multi-physics coupling model of GIS contact vibration was first established to address the difficulty in diagnosing contact faults.An experimental platform for high-current detection of GIS was built using AC/DC test equipment,simulating different operating conditions and collecting vibration signals to demonstrate the feasibility of vibration detection and experimentation.The wavelet packet energy entropy diagnostic method was proposed and compared with time-domain and frequency-domain analysis methods,demonstrating its good anti-interference properties.Finally,online experiments were conducted at the substation site,analyzing signals indicating that under the same current,the equipment exhibited signal frequency domain amplitudes of 100 Hz and 800 Hz respectively for normal and abnormal states,with significant differences in time-domain signal acceleration as well.Analyzing wavelet packet energy entropy,it was found that during normal operation,the energy entropy in the first and eighth frequency bands was 0.601 and 0.023 respectively,while during abnormal operation,the entropy in the first and eighth frequency bands was 0.041 and 0.142 respectively,with a significant decrease in entropy in the first frequency band and a significant increase in the eighth frequency band.The conclusion indicates that this method can effectively diagnose the contact status of GIS contacts.关键词
电接触/气体绝缘全封闭组合电器/多物理场耦合/振动信号/小波包/故障诊断Key words
electrical contact/gas insulated switchgear(GIS)/multi-physical field coupling/vibration signal/wavelet packet/diagnose faults分类
信息技术与安全科学引用本文复制引用
何龙,马金财,朱咏明..基于振动特征的GIS触头电接触状态诊断方法研究[J].电气传动,2026,56(3):88-96,9.基金项目
国网新疆电力有限公司科技项目(5230CJ230002) （5230CJ230002）
