高压电器2026，Vol.62Issue(5)：9-20,12.DOI:10.13296/j.1001-1609.hva.2026.05.002
基于模态空间分析的GIS振动源定位和动载荷重构方法
Vibration Source Localization and Dynamic Load Reconstruction Method for GIS Based on Modal Space Analysis
摘要
Abstract
To address the difficulty of quantitatively identifying internal mechanical defects in gas-insulated switch-gear(GIS)through external vibration signals,a study on vibration source localization and dynamic load reconstruction for three-dimensional thin enclosures is performed.A joint inversion framework centered on modal space analysis is constructed,in which a physics-informed Gaussian process(PIGP)combined with a finite-element-mode-based spa-tial shape dictionary is used to perform constrained reconstruction of modal forces.In the vibration source optimiza-tion,a physical constraint based on modal energy distribution is introduced and integrated with a genetic algorithm(GA)to achieve global optimization of the load application position.Based on a GIS enclosure finite element model and a full-scale experimental platform,the acceleration response data is acquired under different excitation paths,background vibrations,and noise conditions,and the localization accuracy as well as the reconstructed load time his-tories are comparatively analyzed.The results show that the proposed joint inversion method can still stably identify internal excitation locations and their dominant temporal characteristics under sparse measurement points and multi-source interference,providing an effective technical approach for physical tracing and quantitative evaluation of GIS mechanical defects.关键词
气体绝缘金属封闭开关设备/振动源定位/动载荷重构/模态空间反演/物理信息高斯过程/遗传算法Key words
gas-insulated switchgear/vibration source localization/dynamic load reconstruction/modal-space inversion/physics-informed Gaussian process/genetic algorithm引用本文复制引用
丁德炜,李宇航,严英杰,刘亚东,江秀臣..基于模态空间分析的GIS振动源定位和动载荷重构方法[J].高压电器,2026,62(5):9-20,12.基金项目
国家自然科学基金项目(52207166).Project Supported by National Natural Science Foundation of China(52207166). （52207166）
