| 变电站直流系统接地故障定位及检测装置选用 |
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| 引用本文： | 叶炜,张文生,吴垂扬.变电站直流系统接地故障定位及检测装置选用[J].应用科技,2007,34(12):40-43. |
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| 作者姓名： | 叶炜 张文生 吴垂扬 |
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| 作者单位： | 1. 福州电业局,福建,福州,350009
2. 东北电力大学,电气工程学院,吉林,吉林,132012 |
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| 摘 要： | 发电厂、变电站的直流系统为控制、保护、信号和自动装置提供电源．直流操作系统采用对地绝缘方式运行，当发生2点接地时，有可能使继电保护发生误动、拒动，信号误报，严重危及一次系统安全稳定运行．某些厂家生产的直流接地检测装置具有抗干扰性差、灵敏度不高等缺陷，使得检修人员在直流接地故障查找过程中易产生误判，选线不准等问题．在此，归纳并论述了目前国内外常用的直流接地故障的检测方法、原理及其特点并提出了自己的看法，供现场技术人员在分析、处理接地故障以及研制、选用此类装置时参考．
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| 关 键 词： | 直流系统 接地故障 检测方法 |
| 文章编号： | 1009-671X（2007）12-0040-04 |
| 收稿时间： | 2007-09-10 |
| 修稿时间： | 2007年9月10日 |
The diagnosis skills and monitoring device selection for grounding faults of DC system in substations |
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| YE Wei,ZHANG Wen-sheng,WU Chui-yang.The diagnosis skills and monitoring device selection for grounding faults of DC system in substations[J].Applied Science and Technology,2007,34(12):40-43. |
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| Authors: | YE Wei ZHANG Wen-sheng WU Chui-yang |
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| Abstract: | The ungrounded DC source offers power supplies for control, protection and signal and other automatic devices in the power plants and substations. When more than one grounding faults occur in the DC system simultaneously, the relay protector may have maloperation, unoperation, and even wrong alarming, seriously impairing the safe and steady operations of electric grid. This paper analyses the principles and current skills for diagnosis and location of DC grounding faults, and offers suggestions to help purchase commercial grounding fault monitors. |
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| Keywords: | DC system grounding fault diagnosis skill |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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