中国电机工程学报2024，Vol.44Issue(19)：7863-7876,中插32,15.DOI:10.13334/j.0258-8013.pcsee.230576
GIS多频振动信号产生机理及实验研究
Study on Generation Mechanism and Experiment of GIS Multi-frequency Vibration Signals
摘要
Abstract
At present,there are few researches on gas insulated metal enclosed switchgear(GIS)abnormal vibration,particularly regarding the excitation sources and generation mechanisms.First,the force model is established,and the force source value of GIS vibration induced by box type is calculated.It is pointed out that the electric power between three-phase buses is the main excitation source of the main frequency vibration in normal operation.Poor contact will lead to the increase of contact repulsion force,and loose anchor bolts will lead to the change of natural frequency of the system,which affects the nonlinear vibration response characteristics.The shell of GIS equipment is studied according to thin-walled cylindrical shell,and the multi-order natural frequencies of typical GIS shell are calculated.An effective nonlinear vibration equation is established,and the mechanism of multi-frequency vibration signal generation in the nonlinear GIS system is obtained for the first time by analytical method.Finally,a vibration signal acquisition system is successfully developed.Typical mechanical defects are set on 550 kV GIS vibration.The experimental results show that the amplitude and frequency of vibration response excited by the system are consistent with the theoretical analysis results.The research results provide support and reference for the detection and diagnosis of GIS mechanical defects.关键词
气体绝缘金属封闭开关设备/受力模型/固有频率/机械缺陷/非线性振动Key words
gas insulated metal enclosed switchgear(GIS)equipment/force model/natural frequency/mechanical defect/nonlinear vibration分类
信息技术与安全科学引用本文复制引用
冯英,武建文,王智,郝建,邵阳,王承玉..GIS多频振动信号产生机理及实验研究[J].中国电机工程学报,2024,44(19):7863-7876,中插32,15.基金项目
国家重点研发计划项目(2022YFB2403700) （2022YFB2403700）
国家自然科学基金(重点项目)(51977002). National Key R&D Program of China(2022YFB2403700) （重点项目）
Project Supported by National Natural Science Foundation of China(Key Program)(51977002). （Key Program）
