摘要
本文介绍了国内外大型电力变压器中性点接地方式和我国国标的有关规定，论证了三峡500kV生变压器中性点经电抗器接地的必要性、可行性和合理性，通过计算分析，接地电抗器用值采用1／3变压器Uk％是最佳选择，建议采用。
The neutral grounding of large - scale powertransformer home and abroad is presented in this paper. Thenecessity, feasibility and rationality of the grounding by smallreactance for 500kV main trans former of Three Gorges Hy-droelectric Power Station are expounded and proved' On thebasis of analysis and calculation the author puts forward thatthe one-third of Uk % of main transformer may be the opti-mal value for the grounding resistance and it is proPosed touse this value in practice.
出处
《电网技术》
EI
CSCD
北大核心
1997年第5期48-51,共4页
Power System Technology
