| 地铁直流牵引供电系统馈线的保护方法 |
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| 引用本文： | 丁丽娜.地铁直流牵引供电系统馈线的保护方法[J].供用电,2004,21(6):12-14. |
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| 作者姓名： | 丁丽娜 |
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| 作者单位： | 西南交通大学 |
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| 摘 要： | 该文介绍了地铁直流牵引供电系统中所采用的几种直流馈线保护方法 ,详细分析了大电流脱扣保护、电流上升率及电流增量保护、过流保护、双边联跳保护、接触网热过负荷保护及自动重合闸保护的基本原理 ,并举例说明了如何通过对电流上升率 ,电流增量和电流上升持续时间的测量来区分故障情况和正常运行情况。
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| 关 键 词： | 馈线 直流 保护 地铁 |
| 文章编号： | 1006-6357(2004)06-0012-03 |
| 修稿时间： | 2004年7月12日 |
PROTECTION METHOD OF FEEDER LINE IN SUBWAY DC TRACTION SUPPLY SYSTEM |
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| West-south Jiaotong University,Ding Lina.PROTECTION METHOD OF FEEDER LINE IN SUBWAY DC TRACTION SUPPLY SYSTEM[J].Distribution & Utilization,2004,21(6):12-14. |
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| Authors: | West-south Jiaotong University Ding Lina |
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| Affiliation: | West-south Jiaotong University Ding Lina |
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| Abstract: | The paper introduces several protection methods for DC feeder protection adopted in traction power supply system, analyses in detail the principle of high current tripping protection, current rising rate di/dt and current increment protection, over-current protection, double-sided inter-tripping protection, OCS thermal overload protection and automatic re-closure. It describes with example how to distinguish the abnormal and normal conditions by the measurement of current rising rate, current increment and duration of current increment. |
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| Keywords: | feeder DC protection subway |
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