变压器差动保护中接线组别和变比的归算

The Study of Time Group and CT's Ratio of Differential Transformer Relay

从工程角度出发,阐述了微机型变压器保护关于接线组别和变比的归算思路。分析了影响变压器差动保护的几个因素,着重分析了南京南瑞继保电气有限公司的LFP900系列及RCS978型变压器差动保护的接线组别和变比的归算思路,为变电站正常运行提供了理论基础。

The formulate thinking of time group and CT's ratio of differential transformer relay for engineering uses are studied and the elements of the effect of differential transformer relay are analyzed in this paper. The formulate thinking of time group and CT's ratio of differential transformer relay of NARI's LFP900 sets and RCS978 are discussed especially. It can make the transformer run well.