支撑式柔性直流换流阀地震响应及减震控制仿真分析  

Simulation Analysis of Seismic Response and Damping Control of Supported VSC⁃DC Converter Valve

作　　者：李子轩 吴水根[1,2] 杨阿娟 谢强 LI Zixuan;WU Shuigen;YANG Ajuan;XIE Qiang(College of Civil Engineering,Tongji University,Shanghai 200092,China;Tongji Architectural Design(Group)Co.,Ltd.(TJAD),Shanghai 200092,China;Kunming Electrical Apparatus Research Institute,Kunming 650000,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]同济大学建筑设计研究院(集团)有限公司,上海200092 [3]昆明电器科学研究所,昆明650000

出　　处：《高压电器》2025年第4期168-176,共9页High Voltage Apparatus

基　　金：国家重点研发计划项目(2022YFF0608904);国家自然科学基金项目(51878508)。

摘　　要：支撑式柔性直流换流阀是柔性直流输电技术的核心设备之一,造价高,功能重要,保证柔直阀在各种情况下稳定运行意义重大,有必要对其抗震安全问题开展研究。为提升支撑式柔直阀的抗震性能,文中采用有限元数值仿真分析的方法,模拟了给斜拉绝缘子施加不同预应力情况下阀塔的地震响应,并提出了一种新型的减震方法:斜拉绝缘子—环簧减震器,即在原先的斜拉绝缘子末端安装环簧阻尼器。对比安装不同预应力斜拉绝缘子与安装组合减震器情况下阀塔的地震响应,结果显示,安装组合减震器情况下,阀塔的顶部位移响应与设备根部应力均大幅降低,可以实现对设备根部应力和顶部位移的双重控制,有更高的工程应用价值。考虑工程实际,仅替换外侧部分预应力斜拉绝缘子,同样可以达到较好的位移及应力控制效果,降低成本的同时简化现有阀塔减震措施的施工过程,有更高的工程应用价值。The supported VSC DC converter valve is one of the key equipment of VSC-HVDC transmission technolo-gy with high construction cost and important function.It is of great significance to ensure the stable operation of VSC-DC valve in various situations and is necessary to carry out research on its seismic safety.For improving the seismic performance of the supported converter valve,the finite element numerical simulation analysis is adopted in this pa-per to simulate the seismic response of the valve tower under the condition of applying different pre-stresses to the di-agonal insulator,and a new type of vibration damping method-diagonal insulator-ring spring damper is proposed,which is to install ring-spring damper at the end of the original diagonal insulator.The seismic response of the valve tower with different prestressed tilt insulators and the installation of combined damper is compared.The result shows that in case of installation of the combined damper,the top displacement response of the valve tower and the root stress of the equipment are greatly reduced,and the dual control of the root stress and top displacement of the equip-ment can be achieved,which is of higher value for engineering applications.Considering the engineering reality,re-placing only the outer part of the prestressed diagonal insulators can also achieve better displacement and stress con-trol,reduce the cost while simplifying the construction process of the existing valve tower vibration isolation mea-sures,and has higher engineering application value.

关 键 词：支撑式柔性直流换流阀 预应力 环簧 地震响应控制 

分 类 号：TM721.1[电气工程—电力系统及自动化]