某核电厂干式变压器短路先兆处理及故障分析

Treatment of Short Circuit Precursor and Fault Analysis of Dry Type Auxiliary Transformer in a Nuclear Power Plant

根据一起核电厂干式变压器的罕见故障案例,详细介绍了发生的始末、处理方式,对该案例发生的原因进行了具体分析、并结合使用Ansoft Maxwell软件进行模拟仿真加以验证,最终给出了避免该故障再次发生的防范措施。干式变压器在核电厂交流配电系统广泛使用,为核电厂低压交流配电系统提供电源,案例的研究成果在核电安装、调试、运维方面具有典型的参考意义。

According to a rare fault case of dry-type transformer in nuclear power plant,this paper introduces the whole process and treatment method in detail,analyzes the cause of the case,and verifies it by simulation with Ansoft Maxwell software.Finally,the preventive measures to avoid the recurrence of the fault are given.Dry type transformer is widely used in AC power distribution system of nuclear power plant to provide power for low-voltage AC power distribution system of nuclear power plant.The results of case study have typical reference significance in nuclear power installation,commissioning,operation and maintenance.