T接短线路微机纵差保护原理研究  

Research of Microcomputer Differential Current Protection Principle for T Structure Short Transmission Line

作　　者：李岩[1] 尹项根[1] 马天皓[1] 陈德树[1] 徐进亮 楼红勇 

机构地区：[1]华中理工大学电力工程系 [2]南京电力自动化设备总厂

出　　处：《电力自动化设备》1999年第2期21-23,共3页Electric Power Automation Equipment

摘　　要：线路差动保护能否采用采样值差动原理，是一个很有意义的新课题。介绍了采样值差动的基本原理，并以该原理为基础，结合Ｔ接线路差动保护的特点，提出了一种新的保护判据。理论分析和动模实验表明，该方法是可行的。Implementation of differential protection according to every sampled value is a question for discussion.The basic principle of differential protection according to every sampled value is introduced and a new criterion is proposed based on it.Theoretical analysis and dynamic model test show that the new criterion is feasible and improvement is obtain in the ability against TA saturation and high resistance neutral grounding in comparison with conventional differential protection.

关 键 词：线路保护 纵差保护 微机 T接短线路 继电保护 

分 类 号：TM773[电气工程—电力系统及自动化]