220kV主变压器保护双重化改造设计及相关问题的探讨

Modification design of dual protection of 220 kV main transformer and discussion of related problems

文中对220kV主变压器保护双重化改造的设计方案进行了分析,并结合嘉山变电站的主变压器保护双重化工作,对双重化保护的电流回路接入方式及二次回路设计中应遵循的原则以及主变压器保护双重化改造后不同运行方式的操作要求进行了探讨。

This paper analyzes the modification design plan of the duplicate protection system of the 220kV main transformer,and combining with the Jiashan Substation protection practice, explores the connection types of current circuits and the design principles of secondary circuits, as well as the different operation requirement after the modification.