摘要
研究与分析了低阻抗保护作为发-变组相间短路后备保护的动作特性,通过理论分析并结合动模试验结果证明了低阻抗保护作为发-变组相间故障后备保护的保护原理是不完善的,不适宜作为发-变组相间短路故障的后备保护。
The operation characteristics of impedance protection of generator-transformer unit used as the backup protection for interphase short circuit are introduced in the paper.With analysis and dynamic simulation,the principle that low impedance protection can be used as backup protection is proved to be imperfect.
出处
《江苏电机工程》
2010年第2期41-43,共3页
Jiangsu Electrical Engineering
关键词
发-变组
低阻抗保护
后备保护
generator-transformer unit
low impedance protection
