反时限电流保护浅析  

Analysis of Inverse Time Lag Current Protection

作　　者：于芳[1] 张宏宇[1] 舒敏波[1] 

机构地区：[1]武汉大学电气工程学院,武汉430072

出　　处：《淮阴工学院学报》2006年第3期43-46,共4页Journal of Huaiyin Institute of Technology

摘　　要：电流保护分为定时限和反时限两大类,定时限电流保护应用广泛,反时限电流保护也十分简单,以存在配合的线路反时限零序电流保护和发电机负序反时限过流保护为例,介绍了选择曲线、确定待定参数的方法和技巧。The current protection is divided into two types that are definite time lag and inverse time lag. The application of definite time lag current protection has already been familiar to us. The conception of inverse time lag current protection is also very simple, but it has some skills and methods when the curves are chosen and undetermined parameters are ascertained, which are introduced in this paper with the examples of inverse time lag zero - sequence current protection of mating line and negative - sequence inverse time - delay over - current of generator.

关 键 词：反时限 零序电流 负序电流 

分 类 号：TM77[电气工程—电力系统及自动化]