变压器启动过程中励磁涌流及和应涌流现象分析

Analysis of Inrush Current and Sympathetic Inrush Current during Transformer Startup

某220 kV变电站主变启动送电过程中,出现多种因素导致主变冲击不成功,相关保护动作的情况。二次检修人员通过现场及后续对故障录波波形和保护信息分析,找出了导致冲击不成功的原因为励磁涌流及和应涌流,并归纳总结出可应用于工程实际的应对措施,可供后续参考。

In the process of starting and transmitting power to the main transformer of a 220 kV substation,many factors lead to the failure of main transformer startup and related protection actions.It is found out that the cause of the failure startup is due to the inrush current and sympathetic inrush current.And then the corresponding improvement measures are given,which has practical reference value.