| 地铁轨道对地绝缘损坏时杂散电流变化规律研究 |
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| 引用本文： | 孟庆海.地铁轨道对地绝缘损坏时杂散电流变化规律研究[J].城市轨道交通研究,2004,7(5):65-66. |
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| 作者姓名： | 孟庆海 |
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| 作者单位： | 中国矿业大学信息与电气工程学院电气工程系,221008,徐州 |
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| 摘 要： | 地铁轨道对地绝缘如果发生局部损坏,该处的轨道对地电位将接近于零,进而造成轨道对地电位最大值以及杂散电流的增加.如果损坏位置位于牵引所回流点附近,则轨道对地电位的最大值变为正常情况下的2倍,杂散电流变为正常情况下的4倍,因此应该加强轨道对地绝缘的监测.
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| 关 键 词： | 地铁 杂散电流 轨道绝缘 |
| 修稿时间： | 2003年12月16日 |
Study of Stray Current When Track to Earth Insulation Defect Occurrs |
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| Meng Qinghai Dept. of Information and Electrical Eng.,China Mining Technology Univ.,Xuzhou,China.Study of Stray Current When Track to Earth Insulation Defect Occurrs[J].Urban Mass Transit,2004,7(5):65-66. |
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| Authors: | Meng Qinghai Dept of Information and Electrical Eng China Mining Technology Univ Xuzhou China |
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| Affiliation: | Meng Qinghai Dept. of Information and Electrical Eng.,China Mining Technology Univ.,221008,Xuzhou,China |
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| Abstract: | When local defect of track to earth insulation occurs,the track to earth potential of the position will be changed to zero,which will increase the maximum value of track to earth potential as well as the stray current.If the defect occurs at the return point of track substation, the maximum value of track to earth potential will be doubled and the stray current will be fourfold.This paper discusses how to adopt a system to monitor the stray current when defect occurs. |
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| Keywords: | metro stray current track to earth insulation |
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