摘要
对一起牵引变电所过电流保护动作进行了分析,通过分析变压器低压侧相间电压与负荷的关系,结合过电流保护低压启动判据,给出过流保护动作的原因,并提出一种改进保护判据的方法。
With analyzing a case of over-current protection action of the traction substation, by analyzing the relations between inter-phase voltage and load at low side of transformer and with connection to judgment of low voltage start up of over-current, the paper brings forward the causes of over current protection action, and puts forward a method for improving the protection criteria.
出处
《电气化铁道》
2018年第4期84-87,共4页
Electric Railway
关键词
过电流保护
过负荷
相间短路
Over-current protection
over-load
inter-phase short circuit
