安装相间间隔棒的输电线防风偏设计有限元分析  

Analysis of Overhead Transmission Line for Asynchronous Swaying by the Finite Element Method

作　　者：朱宽军[1] 邸玉贤[1] 李新民[1] 刘振宇[1] 刘彬[1] 

机构地区：[1]中国电力科学研究院,北京100055

出　　处：《高电压技术》2010年第4期1038-1043,共6页High Voltage Engineering

基　　金：国家自然科学基金(50908218)~~

摘　　要：针对安装相间间隔棒的输电线风偏这一强迫振动问题,建立了线路风偏的非线性静力学、动力学计算模型,将无条件稳定的Newmark法与荷载增量法相结合,对水平两相分裂导线初始静平衡状态以及风偏状态下的非线性动力学响应进行数值模拟,得到了导线位移响应及张力变化规律,并就线路安装相间间隔棒后对次档距振荡产生的影响进行了模拟计算。计算结果表明安装相间间隔棒后对相导线风偏有一定的抑制作用,而且相间间隔棒的安装对分裂导线次档距振荡振幅影响不大。所得结果可为特高压输电线路防风偏设计和研究提供参考。For the forced vibration phenomenon of asynchronous swaying of conductors,the nonlinear static and dynamic calculation models are established; by use of the approach combining unconditional stable Newmark method with load-increment method,the initial static balance state of horizontally arranged two-phase bundled conductors and their nonlinear dynamic response under asynchronous swaying are numerically simulated ,and the displacement response and stress variation law of conductors are obtained under different wind load excitation models. The influence of phase-phase spacer on subspan oscillation amplitude was simulated. The computed results show that installing phase-phase spacer has certain suppression action to the swaying amplitude and has little effect on the subspan oscillation amplitude. The results can provide some useful references for the anti-sawing research of UHV transmission.

关 键 词：架空输电线路 风偏 相间间隔棒 相间间隙 导线张力 次档距振荡 

分 类 号：TM751[电气工程—电力系统及自动化]