失磁保护在发电机出现逆功率时的动作分析  

Operation analysis of field-loss protection when reverse-power starts in the generator

作　　者：赵民 叶绍仪 侯佳才 申爱兵[2] 

机构地区：[1]鹤岗发电有限责任公司,黑龙江鹤岗154109 [2]沈阳电力高等专科学校,辽宁沈阳110036

出　　处：《继电器》2003年第11期30-31,35,共3页Relay

摘　　要：叙述了发电机UL-P失磁保护以及阻抗失磁保护的基本原理,并分析了发电机出现逆功率时失磁保护动作情况。同时结合失磁保护各种跳闸方案,论述UL-P原理失磁保护在发电机出现逆功率时应解决的问题。This paper presents the basic principles of UL-P type and impedance-type field-loss protection, and analyzes the operation of field-loss protection when the reverse-power starts in the generator. According to all kinds of tripping schemes of the UL-P type field-loss protection, this paper discusses the problems should be resolved on the field-loss protection when the reverse-power starts in the generator. 

关 键 词：发电机 失磁保护 逆功率 动作分析 汽轮发电机 UL-P原理 

分 类 号：TM31[电气工程—电机]