对一起110kV变电站主变故障的分析

Analysis of a 110 kV Substation Main Transformer Failure

在电力系统运行中,主变压器故障是最常见的故障类型之一,由于变压器本身的复杂性和特殊性,定位故障点和确定故障类型是维护工作的重点和难点。文章介绍了一起110 kV变电站主变本体重瓦斯动作导致三相跳闸的故障情况,综合分析了事故现场情况、事故时的录波图、变压器主体的解体情况,进一步确定了事故的主要原因,并就如何提高系统维护水平和效率提出建议。

During the operating of power system,the main transformer fault is one of the most common fault types.Due to the complexity and particularity of the transformer,it is important and difficult to find out the fault point and fault type.A failure situation of a three-phase trip caused by gas action of the main transformer of a 110 kV substation was introduced.Based on the analysis of the accident scene,the oscillogram during the accident and the disassembly of the transformer body,the main cause of the accident was further determined,and suggestions on how to improve the maintenance level and efficiency of the system were put forward.