GIS振动机理及固有频率研究  

Research on vibration mechanism and natural frequency in GIS

作　　者：李凯[1] 许洪华[1] 陈冰冰[1] 崔杨柳[2] 马宏忠[2] 

机构地区：[1]江苏省电力公司南京供电公司,南京210019 [2]河海大学能源与电气学院,南京211100

出　　处：《电测与仪表》2017年第3期14-18,共5页Electrical Measurement & Instrumentation

基　　金：江苏省电力公司科技项目资助(J2015054);江苏省普通高校研究生科研创新计划项目(KYLX15-0481)

摘　　要：利用振动信号对气体绝缘开关设备(gas insulated switchgear,简称GIS)进行状态监测与故障诊断具有独特优势。文章首先研究了GIS正常运行时的振动机理,从电磁力与磁致伸缩两个方面分析GIS正常运行时的振动特性。对GIS异常振动分类研究,分析利用振动法对GIS进行状态监测及故障诊断的可行性及必要性。固有频率是影响设备振动的重要因素,文章研究了GIS模态分析方法,对GIS气室进行分类研究,从模型构建、边界约束条件等方面研究了GIS振动模态分析的方法,通过模态分析研究GIS气室的固有频率,并与模态试验结果相比较,结果表明通过对GIS的模态分析可以较为准确地获得GIS的固有频率。There is great advantage when the vibration signal is used to GIS（gas insulated switchgear） for condition monitoring and fault diagnosis.This paper researches the vibration characteristic when the GIS operates in normal conditions from the two aspects of electromagnetic force and magnetostriction.To explain the feasibility and necessity of condition monitoring and fault diagnosis of GIS through vibration method,this 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.

关 键 词：GIS 电磁力 磁致伸缩 异常振动 模态分析 边界条件 

分 类 号：TM835[电气工程—高电压与绝缘技术]