| 选煤厂660V供电系统的接地保护技术研究 |
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| 引用本文： | 王国伟,杨丽,王海潮.选煤厂660V供电系统的接地保护技术研究[J].煤矿机电,2012(4):30-32,37. |
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| 作者姓名： | 王国伟 杨丽 王海潮 |
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| 作者单位： | 1. 北京华宇工程有限公司,北京,100120
2. 煤炭科学研究总院,北京,100013 |
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| 摘 要： | 分析了660 V三相三线制配电系统为中性点经高电阻接地系统的特性,阐述了接地电阻器阻值选取的实用方法,中性点金属接地时单相接地电容电流的计算方法及此系统漏电(零序电流)保护器的整定方法,为现场的保护整定技术提供参考依据。
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| 关 键 词： | 接地系统 单相接地电容电流 接地电阻 |
Research on Grounding Protection Technology of 660 V Power System at Coal Preparation Plant |
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| WANG Guo-wei,YANG Li,WANG Hai-chao.Research on Grounding Protection Technology of 660 V Power System at Coal Preparation Plant[J].Colliery Mechanical & Electrical Technology,2012(4):30-32,37. |
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| Authors: | WANG Guo-wei YANG Li WANG Hai-chao |
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| Affiliation: | 1.Beijing Huayu Engineering Co.,Ltd.,Beijing 100120,China;2.China Coal Research Institute,Beijing 100013,China) |
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| Abstract: | The features of 660 V three-phase three-line power distribution systems are neutral grounding system.The applied method of grounding resistance value choice is discussed.One is the calculation method about current of single-phase ground capacitance when the neutral metal grounded;and the other setting method is about the system leakage(zero sequence current) protector.These two methods are introduced,which provide reference for on-site protection setting technology. |
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| Keywords: | grounding system single-phase grounding capacitance current grounding resistance |
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