变压器单元双断路器兼作母联断路器接线方式的应用

Application of main electric connection of transformer-unit-dual-breaker also acting as bus coupler

分析了500kV变电站采用双母线三分段带旁路的接线方式时变压器断路器代路过程中出现事故的主要原因,阐述了变压器单元双断路器兼作母联断路器接线方式在实际中应用的可能,并根据运行经验提出和分析了应注意的几个问题。

This paper analyzes the cause why accidents emerge during the switching operations of transferbreaker replacing transformerbreaker in 500 kV substations,expounds the possibility of the practical applications of transformerunitdualbreaker also acting as bus coupler,and brings forward the matters needing attention.