现场更换500kV变压器附件方法改进与实践

Improved Method and Practice of Field-Replacement for 500kV Transformer Accessories

利用真空提油法对500kV变压器附件进行更换,可缩短检修时间,降低检修成本,真正做到精益化检修。更换过程中,控制变压器箱体内的真空度是此方法的关键,论文重点介绍真空度的计算方法,并应用此方法在检修现场成功实践,在检修工作中可推广使用。

Vacuum oil extraction method is used to replace 500 kv transformer accessories. The method can shorten the repair time and reduce the maintenance cost, which is truly the lean maintenance. The control of vacuum inside the transformer tank during the process of replacing accessory is the key to this method. The paper focuses on the calculation method of vacuum degree, which is applied successfully in the practice of maintenance and can be widely used in maintenance work.