浙江电力

2009, v.28;No.161(03) 41-44

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浅析变压器励磁涌流引起的差动保护误动
Misoperation of Transformer Differential Protection by Inrush Current

刘曦
LIU Xi(Wenzhou Electric Power Bureau

摘要(Abstract):

大容量变压器在空载投运时,因变压器励磁涌流引起的差动保护误动时有发生。结合温州电网一次220kV主变在空载投运时发生因励磁涌流引起的差动保护误动故障,对励磁涌流的特性、保护误动的原因及如何躲开励磁涌流的影响等进行探讨分析。
When unloaded large-apacity transformers start up, misoperation of differential protection often occur because of inrush current.This paper analyzes reasons of differential protection misoperation, characteristics of inrush current, and countermeasures.

关键词(KeyWords): 主变;励磁涌流;差动保护;防误动
main transformer; inrush current; differential protection; countermeasure

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 刘曦
LIU Xi(Wenzhou Electric Power Bureau

DOI: 10.19585/j.zjdl.2009.03.012

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