电器与能效管理技术Issue(2)：6-12,7.DOI:10.16628/j.cnki.2095-8188.2024.02.002
基于磁流体动力学的无极性低压直流断路器电弧仿真及性能优化
Arc Simulation and Performance Optimization of Non-Polar Low Voltage DC Circuit Breaker Based on Magnetohydrodynamics
摘要
Abstract
In response to the problem that traditional low voltage DC circuit breakers weaken their arc extinguishing ability when the current is reversed due to the unidirectional magnetic field,the arc simulation model of non-polar low-voltage De circuit breaker based on COMSOL is established to analyze the arc motion of non-polar low-voltage Dc circuit breaker under the reverse current.The influence of magnetic field and current on the arc-extinguishing ability of non-polar low-voltage Dc circuit breaker is analyzed.The simulation results show that the non-polar low-voltage De circuit breaker can eliminate the blocking effect of current reversal on arc motion,and the arc extinguishing ability is strongest at 240 mT and 16 A.In addition,the simulation results are consistent with the experimental results.The arc-extinguishing ability of the non-polar low-voltage Dc circuit breaker is the strongest in the appropriate magnetic field,and the smaller the current is,the strongest arc extinguishing ability.关键词
电流反向/灭弧能力/二维电弧仿真/无极性低压直流断路器/电弧运动Key words
current reverses/arc extinguishing ability/two-dimensional arc simulation/non-polar low voltage DC circuit breaker/arc motion分类
信息技术与安全科学引用本文复制引用
温惠,郭晓雪,曾馨艺..基于磁流体动力学的无极性低压直流断路器电弧仿真及性能优化[J].电器与能效管理技术,2024,(2):6-12,7.基金项目
陕西省自然科学基金(2021JQ-683) （2021JQ-683）
省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学)开放课题基金(EERI_KF2021004) （河北工业大学）
