间断角原理微机变压器差动保护的研究与开发  

Research and Development of Digital Transformer Differential Relay Based on Dead Angle Philosophy

作　　者：季学军[1] 李哲[1] 姜玉磊[1] 王祖光[1] 

机构地区：[1]国网南京自动化研究院,江苏南京210003

出　　处：《江苏电机工程》2008年第6期5-7,共3页Jiangsu Electrical Engineering

摘　　要：从硬件和软件两方面,对间断角原理变压器差动保护微机化实现过程中遇到的困难进行分析并给出解决方法。详细介绍了间断角原理微机变压器差动保护的技术方案,对其中模拟低通、差分滤波、门槛电流选取、间断角与波宽测量等环节采用的关键技术进行了重点阐述。介绍了实际微机保护装置的动模试验情况。At first, this paper analyzes the difficulties on hardware and software during the digital realization of transformer differential relay based on dead angle philosophy, and provides the methods to overcome them. Secondly,this paper introduces the technical scheme of digital transformer differential relay based on dead angle philosophy, and emphasis is put on key techniques of this scheme,such as analog low-frequency filter,difference and digital filter,current threshold, measurement of dead angle and width of wave. At last,the dynamic model test of real digital protective relay is introduced.

关 键 词：变压器差动保护 差电流 间断角 波宽 动模试验 

分 类 号：TM772[电气工程—电力系统及自动化]