李凯,许洪华,陈冰冰,崔杨柳,马宏忠.GIS振动机理及固有频率研究[J].电测与仪表,2017,54(3):. LI kai,XU Honghua,CHEN Bingbing,CUI Yangliu,MA Hongzhong.Research of Vibration Mechanism and Natural Frequency in GIS[J].Electrical Measurement & Instrumentation,2017,54(3):.
GIS振动机理及固有频率研究
Research of Vibration Mechanism and Natural Frequency in GIS
There is great advantage when vibration is used to GIS (GIS: gas insulated switchgear) for condition monitoring and fault diagnosis. The paper researches the vibration mechanism when the GIS is normal from the aspects of electromagnetic force and magnetostriction. To explain the feasibility and necessity of vibration method, the paper classifies and analyzes the abnormal vibration. Natural frequency is the main factor that affects the vibration of GIS. The method of GIS modal analysis is researched in the paper. Different GIS air cell, model establishment and boundary conditions are analyzed. Natural frequency is calculated through modal analysis. The result is consistent with the modal test which certificates the correctness of modal analysis.