牵引变压器内部故障的分析与判断

【摘要】 介绍了我国京广线电气化区段第一例因线圈断裂而进行现场解体的40000kVA牵引变压器故障,分析了故障产生的原因,结合线圈直流电阻值变化特点,提出用测量直流电阻判断大型变压器内部故障的方法。更多还原

【Abstract】 Introduces the site dismantling for the first time of the failed 40 000 kVA traction transformer due to the broken of coil in electrification section in Jingguang railway line of China, analyses the causes of the failure, and with the reference on the characteristics of DC resistance value variation, brings up the method to judge the inner failure in large-scale transformer by means of DC resistance measurement.更多还原