广东电力2026，Vol.39Issue(4)：97-106,10.DOI:10.3969/j.issn.1007-290X.2026.04.009
模拟开关柜典型机械故障下外壳振动特性分析
Analysis of Shell Vibration Characteristics Under Typical Mechanical Faults of Simulated Switchgear
摘要
Abstract
Latent mechanical defects in the switchgear,if not addressed promptly,may induce insulation breakdowns and other related electrical failures,posing a significant threat to the operational safety and reliability of the power grid.To investigate the vibration characteristics under mechanical fault conditions,a simplified experimental platform is built to simulate three typical mechanical faults,including foreign object intrusion,bolt loosening,and poor contact,to analyze the characteristics and variations of enclosure vibration signals under different conditions.Coupled magnetic-structural simulations are conducted to obtain the electromagnetic and vibration response characteristics,and the vibration mechanism from a microscopic perspective is further explained.The study results show that the vibration amplitude of the enclosure is proportional to the square of the current.Under the fault conditions,the amplitude decreases,waveform distortion becomes evident,and the features such as burrs,spikes,and high-order harmonics appear.Structural parameters and magnetic field differences lead to distinct vibration responses,primarily due to changes in energy transmission characteristics.This study expands the current understanding of mechanical failures in the switchgear and confirms the feasibility of vibration-based condition monitoring,offering a valuable reference for fault detection and prevention.关键词
开关柜/机械故障/振动试验/加速度/磁-结构场耦合Key words
switchgear/mechanical failure/vibration test/acceleration/magneto-structural field coupling分类
信息技术与安全科学引用本文复制引用
黎鹏,沈忠,邱雨,曹保良,王申华,普子恒,施志伟..模拟开关柜典型机械故障下外壳振动特性分析[J].广东电力,2026,39(4):97-106,10.基金项目
国家自然科学基金项目(52407178) （52407178）
