一、前言韶山2型电力机车改为可控硅无级调压后,全车六台硅机组共用了360个可控硅和288个整流元件。为了安全运行,设计上已考虑到串联元件数及并联支路数均留有裕量。这样,只要能及时发现并排除故障元件,就可以避免发展成为桥臂击穿之严重事故,确保机车安全运行。早期试制的硅整流器机车,曾设置了监视系统。但是,随着硅整流元件质量提高,设 First, the preface Shaoshan 2 electric locomotive to SCR stepless voltage regulation, the whole car Liutai Si shared 360 360 SCR and rectifier components. For safe operation, the design has taken into account that the number of series components and the number of parallel branches are left margin. In this way, as long as the fault component can be found and eliminated in time, it can be avoided to develop into a serious accident of the bridge arm breakdown and ensure the safe operation of the locomotive. Early prototype silicon rectifier locomotive, had set up a monitoring system. However, with the silicon rectifier components improve the quality, design