一起220kV变压器保护跳闸事故分析

Obstacle analyses of 220 kV transformer protection trip

220kV变压器是电力系统中的重要元件,运行中变压器保护动作跳闸必须认真分析,本着四不放过的原则找出跳闸原因,正确地改进工作,做好防范措施,杜绝类似事故的发生,提高电网运行水平。这是运行管理的要求,也是对电网对国家的负责。通过一起变压器跳闸事故,结合现场实际情况,对变压器保护跳闸事故进行认真分析,正确地找出故障点及故障类型,为以后变压器保护运行积累经验,提高电网运行管理水平。

220 kV transformer is an important element in power system. It must analyze carefully the transformer protective trip in operation, and should find out the reason of the trip according to 4 rules in power system, to avoid the same occasion and promote the grid operation level. This is necessary of the management and also it is devoted to the nation. In this paper ,it carefully analyzes the transformer protected trip through a obstacle of a transformer system, according to the fact in actual circumstances, and found the spot of the obstacle and type in order to accumulate the experiment of the transformer operation system, and improve the grid operation management level.