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配电变压器低压侧中性点接地刍议

来源于: 发表时间:2018-04-11 15:04 编辑:fzy

叶 充(广州市设计院,广州市 510620)

Discussion about Neutral- point Earthing on the Low-voltage Side of Distribution Transformers
YE Chong(Guangzhou Design Institute,Guangzhou 510620,China)
 
    Abstract:From the development history of neutral-point earthing on the low-voltage side of distribution transformers,its functions and properties are elaborated. Based on analysis on the medium-voltage earth faults,high(medium)and low voltage mixing accidents and low-voltage earth faults,some suggestions on earthing practices are proposed.
Key words:system earthing;medium-voltage earth fault;high(medium)and low voltage mixing accident;low-voltage earth fault;multi-power supply;functional earthing;protective earthing;one-point earthing
 
    摘 要:从配电变压器低压侧中性点接地的历史出发,对其作用、性质进行阐述,通过分析中压接地故障、高(中)低压混触事故、低压接地故障,对接地的做法提出一些建议。
    关键词:系统接地;中压接地故障;高(中)低压混触事故;低压接地故障;多电源;功能接地;保护接地;一点接地
     中图分类号:TM421               文献标识码:A
     doi:10. 3969 / j. issn. 1003 - 8493. 2018. 03. 002

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