输电线路电晕振动特性研究及分析  

Characteristics of corona-induced vibration generated by corona discharge

作　　者：周超[1] 姬昆鹏[1] 芮晓明[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,北京102206

出　　处：《振动与冲击》2012年第15期75-78,共4页Journal of Vibration and Shock

基　　金：中央高校基本科研业务费资助(11QG07)

摘　　要：输电线路导线电晕放电产生离子风,在离子风作用下输电导线产生涡致振动。为了研究输电导线电晕振动特性,分析了导线电晕放电的场强和离子风的产生机理和影响因素,并建立了输电导线电晕涡致振动方程。采用龙格-库塔法计算了220 kV输电线路电晕振动的动力响应,分别研究了导线表面状态、空气湿度和密度、输电导线结构尺寸和张力等对振幅的影响及抑制措施。分析方法和结论,可为特高压输电线路设计、已有线路升级改造以及振动抑制提供必要参考。Ionic wind is generated by corona discharge of transmission line,which then generates vortex-induced vibration of the transmission line.In order to study the characteristics of the vibration,the field strength of corona and mechanism of ionic wind were inspected,and the vibration equation of corona vortex-induced vibration was established.Runge-Kutta method was used to calculate the vibration response of the 220 kV cable,and the impacts of the air humidity and density,conductor surface conditions,cable structure factors and tensions on the vibation amplitude of the cable were discussed.The analysis and conclusions in the paper,can be used as references to designing UHV transmission lines,upgrading existing lines and controlling vibration.

关 键 词：电晕放电 电晕场强 离子风 涡致振动 

分 类 号：TH212[机械工程—机械制造及自动化] TM751[电气工程—电力系统及自动化]