| 直流系统接地点探测新原理 |
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| 引用本文： | 李晓明,梁军,张沛云,苏文博.直流系统接地点探测新原理[J].电力系统自动化,2000,24(13):55-56. |
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| 作者姓名： | 李晓明 梁军 张沛云 苏文博 |
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| 作者单位： | 1. 山东工业大学电力工程学院,济南,250061
2. 山东电力研究院,济南,250002 |
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| 摘 要： | 摘要：对现有几种直流系统接地点探测方法进行了比较分析，指出它们的优缺点。提出了一种简便、操作安全、灵敏度高的直流系统接地点探测新原理——电流相位比较法。该方法使用两个低频电流钳型探头，比较这两个探头测量到的低频电流相位，落后相的低频电流回路即为故障接地回路。
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| 关 键 词： | 直流系统 接地点 探测 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 1/1/1900 12:00:00 AM |
A NEW METHOD OF DETECTING GROUNDING POINT IN DC SYSTEM |
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| Li Xiaoming,Liang Jun,Zhang Peiyun,Su Wenbo.A NEW METHOD OF DETECTING GROUNDING POINT IN DC SYSTEM[J].Automation of Electric Power Systems,2000,24(13):55-56. |
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| Authors: | Li Xiaoming Liang Jun Zhang Peiyun Su Wenbo |
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| Abstract: | s: After comparing and analyzing several methods of detecting grounding fault point in DC system, this paper pointsout their advantages and shortcomings. Then a simple, secure method with high sensitlvity is proposed that is the method ofcomparing current phase positions. Two low-frequency current probes are used in this method. By comparing the phasepositions of low-frequency currents measured by these two probes. the conclusion may be drawn that the grounding faultpoint is on the circuit with lagging phase angle. |
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| Keywords: | DC system grounding fault point detection |
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