一、引言自1968年轴悬式牵引电动机电力机车在青森区段投入运用以来,其牵引电动机闪络故障已变成第二位的大问题。实际上,不仅在本区如此,而且它也是一个全国性的问题。由于这个问题的普遍性和严重性,从而迫使人们不得不采取措施,尽快查明发生故障原因,寻求解决办法。为此,专门成立了牵引电动机管理机构,负责对现有牵引电动机进行各种研究和考察,努力查明产生故障的原因和寻求防止故障 I. INTRODUCTION Since the shaft-suspended traction motor electric locomotive was put into operation in the Aomori section in 1968, its traction motor flashover fault has become the second major issue. In fact, not only in this region, but it is also a national issue. Due to the universality and seriousness of this issue, people are forced to take measures to find out the cause of the malfunction as soon as possible and seek solutions. To this end, the establishment of a traction motor management agencies responsible for the existing traction motor for a variety of research and study efforts to identify the cause of the failure and seek to prevent failure