高压电器2026，Vol.62Issue(2)：94-101,8.DOI:10.13296/j.1001-1609.hva.2026.02.012
基于磁—结构场耦合的干式直流电容器短路特性分析
Short-circuit Characteristic Analysis of Dry-type DC Capacitor Based on Magnetic-structure Field Coupling
摘要
Abstract
Dry-type DC capacitors,as a key equipment in VSC-HVDC transmission system,are used widely in such important applications as filtering and voltage support.It is of great significance to ensure the long-term,safe and re-liable operation of dry-type DC capacitors.In case of external short-circuit fault in the capacitor,the rapidly in-creased short-circuit curren will flow through the internal busbar and result in great electrodynamic force,which easi-ly cause structural failure of the capacitor.In order to study the issue of capacitor withstanding short-circuit electrody-namic force under short-circuit current impact,in this paper a type of dry-type DC capacitor is taken as the research object,the short-circuit electrodynamic force distribution,deformation as well as stress of the capacitor under short-circuit conditions are calculated and analyzed based on calculation method of magnetic-structure field coupling.The results show that in case of external short-circuit fault,the maximum short circuit electrodynamic force of the capaci-tor reaches 10.8 kN.The deformation of the capacitor mainly occurs on the leading-out copper busbar and its sur-rounding areas,and the deformation approaching the middle part of the busbar is larger.The leading-out terminal shows an obvious downward squeezing trend.The research results in this paper provide theoretical reference for me-chanical strength check and structural optimization design of capacitor.关键词
干式直流电容器/磁—结构场耦合/短路电动力/结构变形Key words
dry-type DC capacitor/magnetic-structure field coupling/short-circuit electrodynamic force/deformation of structure引用本文复制引用
黎鹏,邱雨,岳国华,杜志叶,姚成,刘刚..基于磁—结构场耦合的干式直流电容器短路特性分析[J].高压电器,2026,62(2):94-101,8.基金项目
国家自然科学基金(51977152) （51977152）
南方电网科学研究院有限责任公司科技项目(CG1500062001576425). Project Supported by National Natural Science Foundation of China(51977152),S&T Program of CSG Electric Power Research Institute(CG1500062001576425). （CG1500062001576425）
