磁流体仿真与正交试验融合设计的灭弧室性能优化方法

doi:10.19595/j.cnki.1000-6753.tces.220518

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摘要低压断路器开断过程产生的电弧是影响其开断性能的重要因素,研究并优化低压断路器灭弧性能是提高其品质的关键。该文提出一种磁流体仿真与正交试验融合设计的灭弧性能优化新方法。建立了基于磁流体理论的电弧等离子体模型,研究了跑弧道形状、灭弧栅片数量、横向磁场、灭弧室压力等对灭弧性能的影响,得出优化因素组合及变量范围。在此基础上,建立了多维电弧参量测试系统,将磁流体仿真与正交试验进行融合,分别设计了四因素三水平、四因素四水平正交试验,融合后获得五个因素对灭弧性能影响强弱的排序为：灭弧室压力、横向磁场、跑弧道形状、栅片数及触头材料。最后结果表明,灭弧室压力、横向磁场、跑弧道弧度、触头Agcd比例变大均能减小电弧转移时间,栅片为7片时电弧转移效果最好。

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关键词 ：灭弧室, 电弧仿真, 灭弧性能, 正交试验

Abstract：The arc generated during the breaking process of low-voltage circuit breakers is an important factor affecting its short-circuit performance. The key to improve the quality of the low- voltage circuit breaker is to study and optimize its arc extinguishing performance. In the paper, a new method of arc extinguishing performance optimization based on the fusion design of MHD simulation and orthogonal experiment is proposed. Firstly, the simulation model of arc extinguishing chamber is established, and several factors such as the shape of arc runner, the number of arc extinguishing grids, transverse magnetic field and arc extinguishing chamber pressure are adjusted to obtain the optimal factor combination and variable range. Secondly, the prototype of arc extinguishing chamber and multi-dimensional arc data measurement system is designed to fuse arc image and electrical signal data to reproduce the whole process of arc movement. Thirdly, according to the prototype and simulation model, four-factor three-level and four-factor four-level orthogonal tests are designed respectively. After the integration of the prototype experiment and simulation calculation, the order of the influence of five factors on arc extinguishing performance is obtained as follows: arc extinguishing chamber pressure, transverse magnetic field, arc runner shape, arc extinguishing grid and contact material. It is concluded that the arc transfer time can be reduced by increasing the pressure of arc extinguishing chamber, transverse magnetic field, arc runner radian and the proportion of contact material Agcd. When the grid is 7 pieces, the effect of arc transfer is the best.

Key words： Arc extinguishing chamber arc simulation arc extinguishing performance orthogonal experiment

收稿日期: 2022-04-06

PACS:

TM572.2

基金资助:上海市临港新片区高新产业和科技创新专项（SH-LG-GK-2020-02-27）、浙江省重点研发计划项目（2021C01046）、浙江省公益技术研究计划项目（LGC20E070001）和温州市基础公益性项目（G20210005, G20210020）资助

通讯作者: 游颖敏男,1980年生,博士研究生,高级实验师,研究方向为电器可靠性及测试技术。E-mail: yymfd@163.com

作者简介: 赵杰男,1987年生,工程师,研究方向为电气自动化、电器及其智能化技术。E-mail: 122264428@qq.com

引用本文:

赵杰, 游颖敏, 舒亮, 王景芹, 张延平. 磁流体仿真与正交试验融合设计的灭弧室性能优化方法[J]. 电工技术学报, 2022, 37(20): 5347-5358. Zhao Jie, You Yingmin, Shu Liang, Wang Jingqin, Zhang Yanping. The Performance Optimization of Arc Extinguishing Chamber Based on the Integration Analysis Magnetic Fluid Simulation and Orthogonal Test. Transactions of China Electrotechnical Society, 2022, 37(20): 5347-5358.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.220518 https://dgjsxb.ces-transaction.com/CN/Y2022/V37/I20/5347

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