摘要
结合运行经验 ,讨论大型发电机定子绕组匝间短路保护的实际应用问题。主要是高灵敏单元件横差保护的互感器问题和套数 ,不完全纵差保护动作特性的改进 ,大型汽轮发电机采用纵向基波零序电压保护的灵敏度问题 ,以及三元件裂相横差保护和故障分量负序方向 (ΔP2 )
In connection with the operational experience, the practical problems of inter turn S/C protection for large generator are discussed.Among them are the CT′s transformation ratio and quantity of single element transverse differential protection, the performance improvement of longitudinal differential protection, the sensitivity of longitudinal zero sequence voltage protection for large turbo generator and the application of three element phase split transverse differential protection and negative sequence directional protection.
出处
《电力自动化设备》
EI
CSCD
2000年第3期1-3,共3页
Electric Power Automation Equipment
关键词
定子绕组
匝间短路
继电保护
大型发电机
generator
stator windings
inter-turn short circuit
relay protection
