750kV变压器Π型接地环流分析与抑制研究

李山,李伟,吴标,张媛,周利兵,公多虎

Study of Analysis and Suppression on Grounding Circulation Current of 750 kV Transformer Π Grounding

Shan Li,Wei Li,Biao Wu,Yuan Zhang,Libing Zhou,Duohu Gong

表1 负荷电流与环流的关系

Tab.1 Relationship of load current and circulation current

名 称 数 值 负荷电流/A(IA = IB = IC) 750 500 400 250 125 环流实测值I1/A 125 85 65 42 20 环流/负荷电流(I1/I) 0.167 0.170 0.163 0.168 0.160