| 基于频谱分析的小电流接地系统单相接地故障选线的研究 |
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| 引用本文： | 李波,曹旭东,李振刚,王德江.基于频谱分析的小电流接地系统单相接地故障选线的研究[J].辽宁工学院学报,2008,28(1):1-2. |
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| 作者姓名： | 李波 曹旭东 李振刚 王德江 |
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| 作者单位： | 辽宁工业大学信息科学与工程学院 辽宁锦州121001(李波，李振刚，王德江)，锦州石化公司 辽宁锦州121001(曹旭东) |
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| 基金项目： | 辽宁省教育厅高等学校科学研究项目(2004 D 046) |
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| 摘 要： | 论述了小电流接地系统发生单相接地故障机理,指出了故障线路与健全线路零序暂态电流显著不同,反映零序暂态高频电流特征的频谱差别很大。通过系统仿真分析,得到单相接地故障线路的信号功率最大,以此来鉴别故障线路和健全线路。
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| 关 键 词： | 频谱分析 故障选线 DSP FFT |
| 文章编号： | 1005-1090(2008)01-0001-02 |
| 修稿时间： | 2006年12月28 |
Study of Undercurrent Grounding System in Single-phase Grounding Fault Circuit Selection Based on Spectral Analysis |
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| LI Bo,CAO Xu-dong,LI Zhen-gang,WANG De-jiang.Study of Undercurrent Grounding System in Single-phase Grounding Fault Circuit Selection Based on Spectral Analysis[J].Journal of Liaoning Institute of Technology(Natural Science Edition),2008,28(1):1-2. |
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| Authors: | LI Bo CAO Xu-dong LI Zhen-gang WANG De-jiang |
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| Affiliation: | LI Bo1,CAO Xu-dong2,LI Zhen-gang1,WANG De-jiang1 |
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| Abstract: | Fault mechanism of undercurrent grounding system occurred to single-phase grounding was discussed,remarkable difference was pointed out against zero-transient current between fault circuit and perfect circuit.Distinctness on characteristic spectrum of high-frequency zero-transition current was reflected.Through the system simulation analysis,the biggest signal power in fault circuit occurred,single-phase grounding was found which can discriminate fault circuit and sound circuit. |
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| Keywords: | spectrum analysis failure circuit selection DSP FFT |
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