摘要
结合110/10kV变压器在空投并列过程中导致110kV线路电源侧发生线路差动保护误动的实例,分析了变压器在空载并列投入运行过程中励磁涌流导致保护误动的根本原因,并从操作方法和设备选型方面给出了可行性较强的改进措施。
Combined with the differential protection mal-operation tied for 110 kV line power supply circuit case when 110/10kV transformer magnetizing parallel in the process,it analyzes the reason of protection mal-operation caused by excitation inrush current during the transformer no-load joint commissioning,and gives the feasibility improvement measures from the aspects of operation methods and equipment selection.
作者
付朝勇
FU Chaoyong(China Nuclear Shaanxi Uranium Enrichment Co.,Ltd.,Hanzhong 723312,China)
出处
《电工技术》
2018年第1期102-103,共2页
Electric Engineering
关键词
变压器
空投
励磁涌流
差动保护
transformer
magnetizing
inrush current
differential protection
