| 某35 kV配电系统单相接地故障分析及解决方案研究 |
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| 引用本文： | 朱明星,夏振武,包自力.某35 kV配电系统单相接地故障分析及解决方案研究[J].电力学报,2012,27(6):554-558. |
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| 作者姓名： | 朱明星 夏振武 包自力 |
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| 作者单位： | 1. 安徽大学 教育部电能质量工程研究中心,合肥,230601
2. 马鞍山钢铁股份有限公司,安徽 马鞍山,243003 |
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| 摘 要： | 对单相接地故障的电气特性进行分析,探讨故障造成的危害,对某工厂110kV变电站35 kV配电系统过电流保护动作跳闸故障进行详细的录波分析,确定跳闸原因为系统发生了单相接地故障,并基于故障零序电流特性提出零序电流保护来识别故障线路,同时提出接地变压器对零序电流呈低阻抗性也是一种良好的解决方案.
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| 关 键 词： | 电力系统 单相接地 零序电流 故障特性 接地变压器 |
The Analysis and Solution to the Single-phase Grounding Fault of a 35kV Power Distribution System |
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| ZHU Ming-xing
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XIA Zhen-wu
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BAO Zi-li.The Analysis and Solution to the Single-phase Grounding Fault of a 35kV Power Distribution System[J].Journal of Electric Power,2012,27(6):554-558. |
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| Authors: | ZHU Ming-xing XIA Zhen-wu BAO Zi-li |
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| Affiliation: | 1.Power Quality Engineering Research Center Ministry of Education of Anhui University, Anhui 230601,China; 2.Maanshan Iron & Steel Company Ltd.,Maanshan 243003,China) |
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| Abstract: | This paper analyzed the characteristics of one-phase grounding fault firstly,discussed the damages of the fault,and then,used the record wave to analysis an over-current protection fault of the 110kV substation 35 kV distribution system of a company,confirmed that it is the one-phase grounding fault.At last,it proposed the zero sequence current protection to identify the fault line according to characteristics of the zero sequence current,and pointed out the ground transformer's low zero sequence impedance is also a good solution. |
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| Keywords: | electric power system single-phase grounding zero sequence current fault characteristic grounding transformer |
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