220kV变电站主变压器冲击合闸异常分析

Exception Analysis of Main Transformer Impact Closing in 220 kV Substation

介绍220k V红星变电站2号主变圧器投运前,冲击试验过程中出现的变压器冲击合闸情况,分析故障的原因,提出消减变压器空载合闸励磁涌流及剩磁的措施,有效解决剩余励磁对主变圧器送电的影响。

This paper introduces the transformer inpact closing phenomenon during inpact testing before the operation of the 2# main transformer of 220kV Hongxing Substation. Through analyzing reasons of the failures, it proposes measures cutting the excitation inrush current and remanence of no--load transformer and effectively reduces the effect of residual excitation on the power supply of the main transformer.