500 kV变压器卡扣式套管抗震加固方法拟静力试验研究  

Study on Pseudo⁃static Test of Seismic Reinforcement Method of Mechanical Clamped Type Bushing for 500 kV Transformer

作　　者：马清越 薛志航 张郑楠 谢强[1] MA Qingyue;XUE Zhihang;ZHANG Zhengnan;XIE Qiang(College of Civil Engineering,Tongji University,Shanghai 200092,China;State Grid Sichuan Electric Power Research Institute,Chengdu 610041,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]国网四川省电力公司电力科学研究院,成都610041

出　　处：《高压电器》2025年第4期130-138,共9页High Voltage Apparatus

基　　金：国家自然科学基金项目(51878508)。

摘　　要：震害调查表明500 kV变压器卡扣式套管的地震易损性较高,为了提高其抗震性能,文中针对500 kV卡扣式套管提出了抗震加固方案,并且对未加固以及不同加固方法的卡扣式套管进行了反复加载作用下的试验研究,对比了不同加固方法下套管的破坏形式以及对抗震性能改善的结果。结果表明:在强震作用下,卡扣式套管的弹簧卡扣对瓷质套管的约束不足,未加固情况下易发生漏油破坏。法兰空腔内注环氧树脂可以有效提升卡扣式套管的抗震性能。加固后,卡扣式套管法兰节点整体性显著提升,各部件间整体协同变形。文中提出的卡扣式套管抗震加固方法可有效提高卡扣式套管的抗震性能。The seismic disaster surveys show that the seismic vulnerability of mechanical clamped type bushing in 500 kV transformer is high.For improving its seismic performance,a seismic reinforcement method for the 500 kV mechanical clamped type bushing is proposed in this paper.The mechanical clamped type bushings without rein⁃forcement and with different reinforcement methods are tested and studied under repeated loading.The damage forms and the result in improving the seismic performance are compared under various reinforcement methods.The results show that under strong seismic action,the constraints of the spring clamps on the porcelain bushing are insuf⁃ficient,leading to oil leakage in the absence of reinforcement.Injection of epoxy resin into the flange cavity can effec⁃tively improve the seismic performance of the clamped type bushing.After the reinforcement,the integrity of the flange joint of the clamped type bushing is improved significantly,with coordinated deformation between components.The seismic reinforcement method of the mechanical clamped type bushing proposed in this paper can effectively en⁃hance its seismic performance.

关 键 词：卡扣式套管 法兰节点 漏油破坏 抗震加固 拟静力试验 加固效果 

分 类 号：TU352.11[建筑科学—结构工程]