大型水电能源基地外送的机组涉网保护配合初探  

Coordination of Large Scale Hydropower Energy Base Transmission Unit Protection Related to Electric Power Network

作　　者：王晶晶[1] 臧景茹[1] 王丰[1] 苏为民[1] 武朝强[2] 

机构地区：[1]国网冀北电力有限公司电力科学研究院(华北电力科学研究院有限责任公司),北京100045 [2]中国电力科学研究院,北京100085

出　　处：《华北电力技术》2015年第6期14-17,共4页North China Electric Power

摘　　要：介绍了用于发电机组过电压保护、失磁保护、过激磁保护等涉及网源协调运行的保护装置功能判据与整定配合,分析了电网发电机突然甩负荷、电网单相接地等工频过电压以及失磁保护与低励限制配合,并讨论了特性阻抗圆与苹果圆特性在隐极机及凸极机工程应用的可能性。The overvohage protection,loss excitation protection,over excitation protection relates to protective devices of network source coordinated operation for function and setting criterion were introcluced. The coordination among power frequency overvohage due to generator sudden load rejection or power grid single-phase grounding,loss of exci- tation protection and low excitation limit was analyzed, and the possibility of impedance round and round apple char- acteristics with engineering application in non salient pole machine and salient pole machine was discussed.

关 键 词：过电压保护 失磁保护 特性阻抗圆 

分 类 号：TM771[电气工程—电力系统及自动化]