300MW汽轮发电机失磁及失磁保护的探讨  

Discussion on 300 MW Generator Magnetism Loss and Its Protection

作　　者：李昌 段东兴[2] 

机构地区：[1]宁夏大坝发电有限责任公司,宁夏青铜峡751607 [2]华北电力大学电子工程系,河北保定071003

出　　处：《电力科学与工程》2006年第4期69-72,共4页Electric Power Science and Engineering

摘　　要：根据宁夏大坝发电有限责任公司4号发电机发生的一次失磁故障,分析了300 MW发电机失磁后电气量的变化过程和发电机失磁后的保护动作情况,同时对失磁保护的动作行为进行了相应探讨,根据分析讨论结果,对失磁保护的判据及出口方式提出了改进性意见。Taking one magnetism loss breakdown of No. 4 Gener- ator of Ningxia Daba Electricity Generation Limited Company for example, the electricity changing process and the protection movement situation after magnetism loss of the 300 MW generator is discussed. The response behavior of the magnetism loss protection is presented. The improvement comments on the magnetism loss protection criterions and the export way are proposed.

关 键 词：发电机 失磁 保护 探讨 

分 类 号：TM307[电气工程—电机]