摘要
主设备不像线路那样 ,主设备的故障成因和故障过程较复杂 ,判断较困难 ,主设备保护品种繁多 ,参数整定复杂。在此 ,对主设备数字保护技术作了较全面的论述 ,提出了电流互感器饱和是造成差动保护不正确动作的首要因素。并提出采用现代数字保护的模块化设计、双重化保护配置及数字保护的容错是提高主设备保护可靠性的重要举措。最后就主设备现代数字保护技术的 5个热点问题提出了见解。
Different from the power line,the fault reason and fault performence of main electric apparatus are more complex and the judgement is more defficult.There are various kind of main apparatus protection their parameters adjusting are complex.A comprehensive discussion about digital protection technique of main apparatus is carried out,which points out that the current transformer saturation performance is the main factor affecting the correct operation of differential protection and that the modularized design of digital protection duplication disposition and the fault-tolerant technique are the important procedure to increase digital main apparatus protection reliability.Finally the opinions about five problems of main apparatus digital protection are put out.
出处
《江苏电机工程》
2003年第3期6-9,共4页
Jiangsu Electrical Engineering
关键词
电力系统
差动保护
数字式保护
主设备
继电保护
digital protection
main electric apparatus
duplication
interlock of out-put
