特高压直流穿墙套管的减震控制及易损性分析  

Seismic⁃reduction Control and Vulnerability Analysis of Ultra⁃high Voltage DC Wall Bushing

作　　者：高子寒 肖立群 刘任鹏 谢强[1,3] GAO Zihan;XIAO Liqun;LIU Renpeng;XIE Qiang(College of Civil Engineering,Tongji University,Shanghai 200092,China;China Electric Power Development Research Institute Co.,Ltd.,Beijing 100053;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]中电联电力发展研究院有限公司,北京100053 [3]同济大学土木工程防灾减灾全国重点实验室,上海200092

出　　处：《高压电器》2025年第4期159-167,176,共10页High Voltage Apparatus

基　　金：国家自然科学基金资助项目(51878508)。

摘　　要：特高压直流穿墙套管是特高压换流站中连接阀厅和直流场的水平悬臂安装设备,其抗震性能对换流站安全运行至关重要。通过建立穿墙套管—阀厅体系的数值仿真模型,选择弹簧摩擦阻尼器作为减震装置,研究考虑阀厅影响下的穿墙套管减震前后结构的动力特性及地震响应。采用多样条易损性分析方法获得减震前后基于强度指标的易损性曲线。研究表明:穿墙套管轴向和水平向位移主要受到阀厅结构影响;采用弹簧摩擦阻尼器进行减震后,穿墙套管—阀厅体系地震响应显著降低;减震前后穿墙套管内、外套管损伤概率均显著降低。阀厅主要影响穿墙套管在地震作用下的水平位移响应,该结构在地震作用下的易损性较高,阻尼器减震方案有效降低了应力和竖向位移响应,显著改善了地震易损性。The ultra-high voltage(UHV)direct current(DC)wall bushing is a horizontally-installed cantilever com-ponent for connecting the valve hall and the DC field in UHV converter stations and its seismic performance is essen-tial to the safe operation of the converter station.The dynamic characteristics and seismic response of the structure of the wall bushing before and after seismic under the consideration of the valve hall is studied by setting up the numeri-cal simulation model of the wall bushing-valve hall system and by selecting the friction ring spring dampers(FRSDs)as energy dissipation device.The multiple stripes analysis(MSA)method is adopted to obtain the vulnerability curves based on strength criteria before and after the seismic action.The results show that the axial and horizontal dis-placements of the wall bushing are mainly affected by the valve hall structure.The seismic response is reduced signif-icantly after adopting FRSDs for seismic reduction.The damage probability of the inner and outer bushing of the wall bushing before and after seismic reduction is reduced significantly.The valve hall mainly affects the horizontal dis-placement response of the wall bushing under the seismic action and the vulnerability of the structure under the seis-mic action is higher.The FRSDs scheme effectively reduces the stress and vertical displacement response and signifi-cantly improves its seismic vulnerability.

关 键 词：特高压直流 穿墙套管—阀厅体系 抗震分析 减隔震技术 易损性分析 

分 类 号：TM721.1[电气工程—电力系统及自动化]