高线精轧机LCI变频传动系统稳定运行研究  

Study on the Stable Operation of LCI Variable Frequency Drive System of High Wire Finishing Mill

作　　者：李艳东[1] 李向前[1] 韩锋[1] 刘冬[1] 何威[1] 苏鹏 武志兰 徐田军 陈静洋 LI Yandong;LI Qianqiang;HAN Feng;LIU Dong;HE Wei;SU Peng;WU Zhilan;XU Tianjun;CHEN Jingyang(Hebei Iron and Steel Co.,Ltd.Chengde Branch,Hebei Chengde 067002,China)

机构地区：[1]河北钢铁股份有限公司承德分公司,河北承德067002

出　　处：《电工材料》2021年第3期56-57,62,共3页Electrical Engineering Materials

摘　　要：河北钢铁股份有限公司承德分公司二高线精轧机组同步电机即采用LCI传动,主电机为双绕组同步电机,功率为5500 kW。自2017年起,LCI装置不定期出现过流故障,严重影响了二高线产线的正常生产,急需找出过流原因并采取针对性措施。为查找过流原因,从工艺、机械、电气检测元器件、电机、接地、外网电压波动几个方面着手,采用排除法逐步确定故障原因。The synchronous motor of the finishing mill unit of the second high line of Hebei Iron and Steel Co.,Ltd.Chengde Branch is driven by LCI,and the main motor is a double-winding synchronous motor with a power of 5500 kW.Since 2017,the LCI device has been experiencing overcurrent faults from time to time,which has seriously affected the normal production of the second high line,and it is urgent to find out the causes of overcurrent and take targeted measures.In order to solve the cause of overcurrent,several aspects of process,mechanical,electrical detection components,motor,grounding,and external network voltage fluctuations were used to gradually determine the cause of the fault using the elimination method.

关 键 词：高速线材轧机 负载换向逆变器 同步电动机 双闭环调速 换流剩余角 

分 类 号：TM921.07[电气工程—电力电子与电力传动]