摘要
设计了一种以AVR单片机为控制器的配电变压器反时限过流保护系统,该系统能实时监测变压器负载大小,根据负载情况进行报警、切闸,能实现自动重合闸功能,能进行故障记录及查询。文中重点介绍了反时限保护的算法、计算时间差存在的问题及对策、校表遇到的问题及解决办法。
An inverse-time overcurrent protection system of distribution transformer is presented based on AVR microcontroller ATMEGA 8515. The system can inspect the change of current in real time and perform such functions as alarming, opening, automatic reclosing, recording and faults displaying. The paper mainly discusses the algorithm of inverse-time overcurrent protection, and the problems and countermeasures both in checking instruments and calculating time differences.
出处
《继电器》
CSCD
北大核心
2005年第3期55-57,共3页
Relay
关键词
配电变压器
反时限保护
自动重合闸
distribution transformer
inverse-time protection
automatic reclosing
