钢结构阀厅与设备耦联效应对换流站800 kV穿墙套管地震响应影响研究  

Research on the Influence of Coupling Effect Between Steel Valve Hall Structure and Equipment on the Seismic Response of 800 kV Wall Bushing

作　　者：杨大峰 孙松 陈峰 林康立 舒前进[2] 曹聪 YANG Dafeng;SUN Song;CHEN Feng;LIN Kangli;SHU Qianjin;CAO Cong(Xuzhou Survey and Design Branch of State Grid Jiangsu Electric Power Design Consulting Co.,Ltd.,Xuzhou 221000,china;China University of Mining and Technology,Xuzhou 221116,china)

机构地区：[1]国网江苏电力设计咨询有限公司徐州勘测设计分公司,江苏徐州221000 [2]中国矿业大学,江苏徐州221116

出　　处：《工业建筑》2024年第4期99-107,共9页Industrial Construction

基　　金：国网江苏电力设计咨询有限公司科技项目(JE202212)。

摘　　要：以典型特高压阀厅800 kV穿墙套管为研究对象,建立了考虑800 kV套管与钢结构阀厅、阀塔、400kV穿墙套管及防火墙的不同耦联方式的7种有限元模型,研究了穿墙套管及其端板的地震响应规律。研究结果表明:考虑与钢结构阀厅、防火墙及400 kV穿墙套管的耦联作用后,800 kV穿墙套管的端板应力幅值增大了21.7%~26.6%,而横向加速度幅值提高了20.5%~31.1%;外套管的应力幅值相对更大,约为内套管的1.06~1.17倍;阀厅结构与设备的耦联作用,使内套管的应力幅值提高了10.3%~11.9%,而对外套管应力没有明显影响(最大仅相差0.62%);结构设备耦联作用使得导电杆与套管内壁的相对位移明显增大,使横向相对位移提高了20.6%~63.4%,而纵向相对位移提高了38.5%~42.8%。因此,在穿墙套管设计选型及强度校核时,应全面考虑钢结构阀厅与设备耦联效应的不利影响。Taking the 800 kV wall bushing of a typical ultra-high voltage valve hall as the research object,seven finite element models were established considering different coupling modes between the 800 kV bushing and the steel structure valve hall,valve tower,400 kV wall bushing,and firewall.The seismic response laws of the wall bushing and its end plates were studied.The research results showed that the stress amplitude of end plates of the 800 kV wall bushing increaseed by 21.7%to 26.6%,while the lateral acceleration amplitude increased by 20.5%to 31.1%,after considering the coupling effect with the steel structure valve hall,firewall,and 400 kV wall bushing.The stress amplitude of the outer casing pipe was relatively larger,approximately 1.06-1.17 times that of the inner casing pipe.The coupling effect between the valve hall structure and the equipment had increased the stress amplitude of the inner casing pipe by 10.3-11.9%,while there was no significant impact on the stress of the outer casing pipe(with a maximum difference of only 0.62%).The coupling effect of structural equipment significantly increased the relative displacement between the conductive rod and the inner wall of the casing pipe,increasing the lateral relative displacement by 20.6-63.4%and the longitudinal relative displacement by 38.5-42.8%.Therefore,in the design,selection,and strength verification of wall bushings,the adverse effects of the coupling effect between the steel structure valve hall and the equipment should be comprehensively considered in order to obtain more scientific and accurate conclusions.

关 键 词：换流站 阀厅 穿墙套管 抗震性能 耦联作用 地震响应 

分 类 号：TU352.11[建筑科学—结构工程] TM75[电气工程—电力系统及自动化]