| 6～10kV线路单相接地故障零序全电流选线研究 |
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| 引用本文： | 王德江,高影.6～10kV线路单相接地故障零序全电流选线研究[J].中国电力,2003,36(3):31-32. |
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| 作者姓名： | 王德江 高影 |
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| 作者单位： | 辽宁工学院,信息科学与工程系,辽宁,锦州,121001 |
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| 基金项目： | 辽宁省教育厅高等学校科学研究项目(10221062) |
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| 摘 要： | 在中性点不接地系统中发生接地故障时，如何快速准确地选出并隔离故障线路，对电网的安全运行非常重要。通过对中性点不接地配电网单相接地故障时零序全电流的分析，得出利用零序全电流的大小和方向故障选线的新方法，该方法与利用零序基波电流的大小和方向故障选线比较，选线信号容易获得，且是接地电流的全部信息。这对故障线路的识别、提高选线的准确率及微机选线装置的开发是有利的。
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| 关 键 词： | 6－10kV线路 单相接地故障 零序电流 选线 输电线路 配电网 电力系统 |
| 文章编号： | 1004-9649(2003)03-0031-02 |
| 修稿时间： | 2002年10月14 |
Study on line-selection of zero sequence full current for single-phase earth fault in 6～10 kV lines |
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| WANG De -jiang,GAO Ying.Study on line-selection of zero sequence full current for single-phase earth fault in 6～10 kV lines[J].Electric Power,2003,36(3):31-32. |
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| Authors: | WANG De -jiang GAO Ying |
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| Abstract: | When the phase to earth fault occurs in neutral indirect grounding power system,it is important to select and isolate the faulted circuit quickly,which is not solved very well so far.By analyzing the zero sequence full current when single-phase earth fault in neutral indirect grounding distribution network occurs,new method of line-selection using amount and direction of zero sequence full current is obtained.Comparing with the line-selection using amount and direction of zero sequence fundamental wave current ,it is easy to obtain the line-selection signal,and it is all information of full current.It is good for improving accuracy of line-selection and development of line-selection devices based on microcomputer. |
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| Keywords: | kV line full current line-selection single-phase earth fault |
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