| 摘要: |
| 基于低压电弧故障测试中电缆碳化路径的加速形成机理和制备过程，对制备结果进行分类和分析，提出了一种电缆碳化路径的判别方法。该方法利用幅值检测、滑动平均滤波算法和小波分析方法分别区分电缆碳化路径处于欠碳化、碳化断路、碳化短路和碳化成功的4种制备结果。在Simulink中搭建具有电弧电流高频分量的电路仿真模型对所提方法进行分析和验证，并利用该方法进一步测试通过电弧故障测试系统制备完成的碳化电缆试品。最终，仿真和实验结果验证了所提方法的有效性和可行性，其可以有效提高电缆碳化路径制备结果的识别率和电弧故障测试的效率。 |
| 关键词: 电弧故障 碳化电缆制备 电缆碳化路径 电弧模型 电弧故障测试系统 |
| DOI：10.16081/j.epae.202204077 |
| 分类号:TM24 |
| 基金项目:福建省科技厅高校产学合作项目(2021Y4002)；福建省科技创新领军人才项目(038000387024) |
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| Analysis and judgment of cable carbonization path based on arc fault test system |
|
DU Liwei1,2,3, XU Zhihong1,2,3
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1.College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350116, China;2.Fujian Key Laboratory of New Energy Generation and Power Conversion, Fuzhou 350116, China;3.Fujian Province University Engineering Research Center of Smart Distribution Grid Equipment, Fuzhou 350116, China
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| Abstract: |
| Based on the accelerated formation mechanism and preparation process of the cable carbonization path in the low-voltage arc fault test, the preparation results are classified and analyzed, based on which, a method for judging the cable carbonization path is proposed. In this method, amplitude detection, moving average filter algorithm and wavelet analysis method are used to distinguish four kinds of preparation results of cable carbonization paths, i. e. under-carbonization, open-circuit-carbonization, short-circuit-carbonization and successful-carbonization. A simulation circuit model with high-frequency components of arc current is built in Simulink to analyze and verify the proposed method. The proposed method is further used to test the carbonized cable sample prepared by the arc fault test system. The simulative and experimental results verify that the proposed method is effective and feasible, and can effectively improve the recognition rate of the cable carbonization path preparation results and the efficiency of the arc fault test. |
| Key words: arc fault preparation of carbonized cable cable carbonization path arc model arc fault test system |
