高压电器2025，Vol.61Issue(4)：30-38,9.DOI:10.13296/j.1001-1609.hva.2025.04.004
地震作用下换流变压器阀侧套管的温度场仿真与响应分析
Simulation and Response Analysis on Temperature Field of Valve Side Bushing of Converter Transformer Under Seismic Action
摘要
Abstract
The valve-side bushing of converter transformer is a key component in electrical equipment and its safe operation is crucial for the reliability of power system.For exploring the impact of seismic action on the temperature field of the valve side bushing of converter transformer,a detailed finite element simulation model for the±800 kV converter transformer and bushing system is set up in this paper to develop seismic response analysis of valve side bushing of converter transformer,study the residual deformation and residual stress of lamella contact finger electri-cal connection structure of the valve side bushing after the seismic,calculate the contact resistance based based on the contact resistance calculation formula of electrical connection structure and analyze temperature variation of the valve side bushing after seismic.The result shows that under the seismic action the contact finger is deformed,the contact stress is decreased and contact resistance is increased.Since the ring-shaped structure of the lamella contact finger results in inconsistency of degrees of deformation of contact finger at different positions,causing distribution difference of the resistance at reach area of the contact finger.The current is concentrated in the area with low resis-tance,leading to a redistribution of the electrical connection structure and resulting in both overall and partial tem-perature increases and posing a danger to the thermal stability and power transmission efficiency of the system.The study result reveals the impact of seismic action on the temperature field of the valve-side bushing of converter trans-former and provides theoretical basis and technical support for improving seismic design and operation as well as maintenance of converter station.关键词
阀侧套管/地震作用/残余变形/温度场仿真Key words
valve-side bushing/seismic action/residual deformation/temperature field simulation引用本文复制引用
刘玉安,毛宝俊,陈云龙,谢强,刘匀..地震作用下换流变压器阀侧套管的温度场仿真与响应分析[J].高压电器,2025,61(4):30-38,9.基金项目
国家自然科学基金资助项目(51878508). Project Supported by National Natural Science Foundation of China(51878508). （51878508）
