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Development of transformer buckup protection based on negative sequence current
Author(s): 
Pages: 72-75,78
Year: Issue:  6
Journal: Hunan Electric Power

Keyword:  继电保护负序电流变压器后备保护;
Abstract: 变压器后备过流保护主要以变压器的额定电流来设置,在作为出线末端两相金属性短路的远后备时,存在灵敏度不足问题.本文基于系统不对称故障序分量特征分析,提出了变压器的负序过流保护,提高了变压器过流保护反应于出线不对称故障的灵敏度.
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