EX2100型励磁系统灭磁开关误跳闸分析  

Analysis on False Tripping of Demagnetization Switch in EX2100 Excitation System

作　　者：张林渠 狄素珍 ZHANG Linqu;DI Suzhen(Sichuan Guang’an Power Generation Co.,Ltd.,Guang’an 638017)

机构地区：[1]四川广安发电有限责任公司,四川广安638017

出　　处：《电力安全技术》2020年第11期75-78,共4页Electric Safety Technology

摘　　要：介绍某电厂600 MW机组采用了美国GE公司的EX2100型励磁系统,某次发生了灭磁开关跳闸引起机组跳闸,后经全面检查和模拟试验,并分析认为:存在光耦开入继电器驱动功率选型较小,长电缆分布电容电流影响,导致继电器误驱动的可能性,并指出暴露出的问题,落实相应整改措施。This paper introduces that the 600 MW unit of a power plant adopts the EX2100 excitation system of GE Company of the United States,and after a certain demagnetization switch tripping causes the unit tripping,after comprehensive inspection and simulation test,it is considered that there is the possibility of small type selection of the driving power of the optically coupled relay and the influence of the capacitance current distribution of the long cable,which leads to the wrong driving of the relay,and points out the exposed problems and implements the corresponding rectification measures.

关 键 词：继电器 灭磁 误跳闸 

分 类 号：TM331[电气工程—电机]