摘要
本文介绍了一种特大型水轮发电机组定子绕组接线形式改造的原因和具体方案。结合现场实际,对比改接线前后定子绕组结构的变化,分析了可能出现的内部短路故障形式及其新的故障特点与规律。在此基础上研究了改造项目对原有的机组保护动作灵敏度的影响情况。
The causation and specific scheme of the improvement made on the connection mode of the stator winding in a super-large hydropower generator are described herein.Based on the in situ practicalities,the modes of the internal short-circuit faults possibly occurred as well as the characteristics of new faults and their laws are analyzed under the comparison made between the changes of the stator winding structures before and after the improvement on the connection.On the basis of this,the effect from the improvement on the action sensitivity of the protection for the original hydropower generating unit is studied as well.
出处
《水利水电技术》
CSCD
北大核心
2012年第3期71-74,共4页
Water Resources and Hydropower Engineering
关键词
内部故障
定子绕组
接线形式
发电机保护
特大型水轮发电机
internal fault
stator winding
connection mode
generator protection
super-large hydropower generator
