间断角原理变压器微机保护装置的实用化研究  

A Pragmatic Study on a Microprocessor-based ProtectionDevice for Transformers on the Principleof Intermission Angle

作　　者：刘建飞[1] 马锁明[1] 任冰 

机构地区：[1]华北电力大学(北京)电力工程系

出　　处：《现代电力》1998年第3期1-6,共6页Modern Electric Power

摘　　要：在第三代数字式保护通用硬件基础上，采用单ＣＰＵ板的方案实现了间断角原理的差动保护。在实现过程中采用了一些实用技术，基本解决了微机实现间断角原理时存在的问题。实验表明该保护动作行为良好。此外，分析了ＶＦＣ型模数转换在高输出频率、高采样率情况下数据的稳定性，并得出了有益的结论。Based on the general hardware of the third generation digital protec- tion, a digital differential protection device for transformers on the intermission angle principle in a single CPU board is presented. A lot of pragmatic tech- niques to deal with the problems which may exsit when realizing the intermis- sion angle principle is adopted. The test results show that the performance of the device is excellent. ln addition, the data stability of VFC running in the high full scale output frequence and high sampling frequency conditions are analysed and some useful conclusions are obtained.

关 键 词：电力变压器 间断角原理 励磁涌流 微机保护 

分 类 号：TM77[电气工程—电力系统及自动化] TM410.6