摘要
发电机的差动保护误动对电力系统影响非常大,在采用了微机保护装置以后,能智能地记录下故障时的系统情况,给故障分析提供第一手的资料。根据所掌握的录波波形进行分析,发现误动原因是一次暂态特性的差异。还对设计运行单位提出了建议,以避免此类事故的发生。
Differential protection misoperation of generator had a serious effect on the power system. After using microprocessor protection device, it could record faults of the system intellectually and provide first-hand data for analysis of the faults. Based on analysis of the wave shape recorded, it found out that misoperation causes were differences of transient char- acteristics.Some suggestions were offer to the design unit to avoid such accidents.
出处
《冶金动力》
2009年第1期1-3,6,共4页
Metallurgical Power
关键词
发电机差动保护
电流互感器暂态特性
故障录波
differential protection misoperation of generator
transient characteristic ofcurrent transformer
fault wave shape recorded
