主设备数字式保护技术的讨论  

Discussion on Digital Protection Technique of Main Electric Apparatus

作　　者：陆于平[1] 吴济安[2] 袁宇波[1] 

机构地区：[1]东南大学电气工程系,江苏南京210096 [2]电力自动化研究院,江苏南京210003

出　　处：《江苏电机工程》2003年第3期6-9,共4页Jiangsu Electrical Engineering

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.

关 键 词：电力系统 差动保护 数字式保护 主设备 继电保护 

分 类 号：TM772[电气工程—电力系统及自动化]