基于硬件切换的双机容错系统研究  

Research on dual fault tolerant system based on hardware switching

作　　者：张岳 曾炼 ZHANG Yue;ZENG Lian

机构地区：[1]北方工业大学电气控制工程及其自动化学院,北京100144 [2]武汉光迅科技股份有限责任公司,湖北武汉430205

出　　处：《节能》2018年第12期111-114,共4页Energy Conservation

摘　　要：控制器是电力系统中重要组成部分,其安全可靠性直接关系到整个电力系统的安全,要求具有无故障、连续的控制输出。目前的控制器容错备份一般采用双机软件通信容错切换方法,该方法存在输出不连续、系统耦合性强、切换实时性低等缺点。针对双机软件通信容错切换存在的问题,文章提出基于硬件切换的双机容错系统设计方案,采用高速可编程逻辑器件实现对双机热备份的控制器进行实时仲裁切换,保证控制器输出的准连续性,该方案可以作为电力系统可靠性备份冗余解决方法进行推广。Controller is a most important part of power system,security and reliability of the controller affect the all power system,so the output of the controller must be non-malfunction and continuity.At the present time,two controllers which communicate with software protocol achieve dual-unit fault-tolerant in power system,the disadvantages of this method are non-connective output,strong coupling and long switching time.According to the problem of the above technique,a new method which achieves dual-unit fault-tolerant technique bases on hardware switching in the paper.The output of the controller is connective using programmable logic device.This method can be extended for dual-unit fault-tolerant in power system.

关 键 词：双机容错 硬件切换 连续输出 可编程逻辑器件 

分 类 号：TP302.8[自动化与计算机技术—计算机系统结构]