摘要
提出在判断出电流变送器(CT)饱和后改变制动特性,当差动动作特性点从制动区转到动作区时,比率差动保护带自适应延时动作等实际应用的解决方案,并通过动模得到验证。最后指出了后备保护存在的一些问题及工程实施中需注意的事项。
Some new projects to solve the problems are introduced, such as,changing the restraint characteristic when saturation is detected, differential protection would operate with adaptive delay when the operation zone changed. The new project is validated with dynamic simulative test. At last, some advice on backup protection is given.
出处
《江苏电机工程》
2005年第5期24-26,共3页
Jiangsu Electrical Engineering
关键词
变压器保护
比率差动保护
励磁涌流
CT饱和
transformers protection
differential protection
excitation inrush current
saturation of current transformer
