电器与能效管理技术Issue(1)：16-24,9.DOI:10.16628/j.cnki.2095-8188.2026.01.003
基于磁流体动力学仿真的小型直流断路器灭弧性能的提升
Improvement of Arc-Extinguishing Performance of Small DC Circuit Breakers Based on Magnetohydrodynamic Simulation
琚珈琪 1李靖 1李子琦2
作者信息
- 1. 温州大学 电气与电子工程学院,浙江 温州 325035
- 2. 浙江省科瑞普电气有限公司,浙江温州 325603
- 折叠
摘要
Abstract
To enhance the arc-extinguishing performance of small DC circuit breakers,the principles related to DC arcs are reviewed,and three types of arc splitter plates with different lengths are designed.Modeling and simulation are carried out on the arc chamber of a specific small DC circuit breaker before and after improvement.The simulation results show that the arc-extinguishing performance of the improved arc chamber is better than that of the original one.Under different inlet velocities,the higher the inlet velocity,the better the arc-extinguishing performance.Three types of test prototypes are manufactured,and electrical endurance tests are conducted in accordance with GB/T 14048.2-2020 Low-Voltage Switchgear and Controlgear—Part 2:Circuit breakers.The make-break time of each opening and closing operation is recorded and averaged.The test results show that the average make-break time of the prototype with the improved arc chamber is shorter,and the average make-break time of the prototype with gas-generating material placed above the moving and stationary contacts is also shorter.The consistency between the simulation and test results is verified,which provides a reference for product performance optimization.关键词
直流/改进前后灭弧室/产气材料/灭弧性能Key words
DC circuit breaker/arc extinguishing chambers before and after improvement/gas-generating materials/arc extinguishing performance分类
信息技术与安全科学引用本文复制引用
琚珈琪,李靖,李子琦..基于磁流体动力学仿真的小型直流断路器灭弧性能的提升[J].电器与能效管理技术,2026,(1):16-24,9.
