高压电器2025，Vol.61Issue(11)：187-195,9.DOI:10.13296/j.1001-1609.hva.2025.11.017
基于半硬磁材料的直流断路器操动机构特性研究
Study on Operating Mechanism Characteristics of DC Circuit Breaker Based on Semi-hard Magnetic Material
摘要
Abstract
Due to the rapid current rise and strong destructiveness of VSC-HVDC transmission system in the faut,a fast and stable DC circuit breaker is urgently necessary In this paper,an integrated actuating and holding mechanism based on semi-hard magnetic material,which has the characteristics of fast response and high holding force,is pro-posed.First,Jiles-Atherton combined with particle swarm optimization is used to analyze the hysteresis characteris-tics of semi-hard magnetic materials,and the equivalent magnetic circuit of semi-hard magnetic mechanism is set up to analyze the influencing factors of electromagnetic force of the mechanism.Then,the simulation model of the semi-hard magnetic mechanism is set up based on Comsol multiphysics finite element simulation software.Both static and dynamic processes of the semi-hard magnetic mechanism are analyzed,and the electromagnetic and mechanical char-acteristics in the process are obtained.Finally,a semi-hard magnetic mechanism prototype is set up in accordance with the simulation results,and the operation experiment of the semi-hard magnetic mechanism is performed to ob-tain the dynamic characteristics of the prototype.The correctness of the simulation is verified by comparing with the simulation results,which can provide an efficient and precise calculation method as well as theoretical basis for the subsequent research and design of the semi-hard magnetic mechanism.关键词
直流断路器/半硬磁材料/操动机构/保持机构/动态特性Key words
DC circuit breaker/semi-hard magnetic material/operating mechanism/holding mechanism/dynamic performance引用本文复制引用
兰剑,冯英,王承玉,罗佳旺,胡启昊,武建文,李祖磊..基于半硬磁材料的直流断路器操动机构特性研究[J].高压电器,2025,61(11):187-195,9.基金项目
国家电网有限公司科技项目(经济型中低压直流开断技术研究及样机研制). Project Supported by Science and Technology Project of SGCC(Technical Research and Prototype Development of Economic Medium Voltage and Low Voltage DC Breaking). （经济型中低压直流开断技术研究及样机研制）
