330MW火电机组失磁保护与欠励限制配合整定计算  

Setting Calculation of coordination of Loss-of-Excitation Protection and Underexcitation Limition for 330 MW Thermal Power Units

作　　者：罗丽佳 LUO Lijia(Inner Mongolia Jingtai Electric Power Generation Co.,Ltd.,Ordos 017100,China)

机构地区：[1]内蒙古京泰发电有限责任公司,内蒙古鄂尔多斯017100

出　　处：《内蒙古电力技术》2020年第2期77-80,共4页Inner Mongolia Electric Power

摘　　要：针对目前电厂普遍存在的失磁保护与欠励限制配合整定不完善、不严谨情况,在P-Q坐标系静稳极限功率圆基础上提出了静稳配合功率圆,并详细阐述了配合整定原则与计算过程。结合某330 MW火电机组失磁保护与欠励限制配合整定实例,现场试验检验欠励限制功能的静态及动态限制特性,证明欠励限制整定值及与失磁保护配合满足要求。In view of the imperfect and imprecise setting of the coordination between loss-of-excitation protection and underexcitation limitation in power plants,a static and stable coordination power circle is proposed on the basis of the static stability limit power circle in the P-Q coordinate system,and the coordination principle and calculation process are expounded in detail.Combined with the example analysis of the loss-of-excitation protection and underexcitation limitation of a 330 MW thermal power unit,the static and dynamic limit characteristics of the underexcitation limitation in the field,which proves that the setting value of the underexcitation limitation and its coordination with the loss-of-excitation protection meet the requirements.

关 键 词：火电机组 失磁保护 欠励限制 静稳极限功率圆 静稳配合功率圆 

分 类 号：TM77[电气工程—电力系统及自动化]