600～1000MW发变组继电保护的现状与改进  

Present situation and improvement of relay protection for large-sized generator-transformer set of 600～1000 MW

作　　者：王维俭[1] 桂林[1] 

机构地区：[1]清华大学电机工程与应用电子技术系,北京100084

出　　处：《华电技术》2008年第1期5-8,共4页HUADIAN TECHNOLOGY

摘　　要：600～1000MW发电机组已广泛采用，直接影响这些特大型机组安全运行的继电保护，在定子绕组匝间短路、低励失磁等保护配置和整定计算、保护用电流互感器选型和发电机中性点接地方式等方面尚存在不足或争论，吁请同行共同关注和讨论。The large-sized power generation units of 600- 1000MW have been widely utilized in engineering practices and the relay protection directly affects the safe operation of large-sized generators, The shortage or arguments on such protections were concerned and discussed in the following aspects,such as the configuration of turn-to-turn fault protection for stator winding,the setting of low-excitation and loss-of-excitation protection,the selection of current transformer （TA） for protection and neutral grounding method for large-sized generators,etc.

关 键 词：大型发电机 匝间短路保护 低励失磁保护 保护用电流互感器选型 中性点接地方式 

分 类 号：TM588[电气工程—电器]