| 小电流接地系统单相故障的Matlab仿真 |
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| 引用本文： | 周羽生,彭琢,韦肖燕,邝江华. 小电流接地系统单相故障的Matlab仿真[J]. 电力系统及其自动化学报, 2009, 21(4) |
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| 作者姓名： | 周羽生 彭琢 韦肖燕 邝江华 |
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| 作者单位： | 长沙理工大学电气与信息工程学院,长沙,410076 |
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| 基金项目： | 湖南省自然科学基金项目(07JJ3101);;湖南省科技计划项目(2007FJ3008) |
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| 摘 要： | 小电流接地系统发生单相接地故障导致非故障相电压升高,为防止进一步扩大成两点或多点接地甚至相间短路,应及时采取措施消除该故障。文中利用Matlab对中性点不接地系统单相接地故障进行仿真,重点探讨了仿真模型的搭建过程;通过对各线路零序电流波形的分析,判断出故障线路;通过对故障线路三相电压、电流波形的分析,判断出接地相。该方法简单、准确、可靠,较好解决了中性点不接地系统单相接地问题。
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| 关 键 词： | 小电流接地系统 仿真 零序电流 三相电压 三相电流 |
Matlab Simulation on Single-phase-to-earth Fault of Small Current Grounding Power System |
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| ZHOU Yu-sheng,PENG Zhuo,WEI Xiao-yan,KUANG Jiang-hua. Matlab Simulation on Single-phase-to-earth Fault of Small Current Grounding Power System[J]. Proceedings of the CSU-EPSA, 2009, 21(4) |
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| Authors: | ZHOU Yu-sheng PENG Zhuo WEI Xiao-yan KUANG Jiang-hua |
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| Affiliation: | College of Electrical Engineering and Information;Changsha University of Science and Technology;Changsha 410076;China |
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| Abstract: | The single-phase grounding fault happens in the small current grounding power system,the voltage of unfault phase will jump higer;In order to prevent the fault from enlarging two pots' or more pots' grounding fault or even short-circuit betweem phases,action should be taken to eliminate the fault in time.In this paper,using matlab to simulate single-phase-to-earth fault of the neutral ungrounding power system,by analyzing zero sequence current of each line,the fault line is judged;by analyzing three-phase v... |
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| Keywords: | small current grounding power system simulation zero sequence current three-phase voltage three-phase current |
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