高可靠性电力微机保护系统设计的研究

Research on Design for High Reliable Microcomputer-Based Protection System in Power System

随着对微机保护系统广泛的应用，设计高可靠的徽机保护系统成为日益迫切的需要。本文从典型的微机保护系统结构出发，分析了目前两种多CPU结构的徽机保护系统的可靠性；并在分析徽机保护系统可靠性结构模型的基础上，设计了二模冗余的容错系统，并分析比较了几种系统的可靠性，确认了系统的高可靠性。

With a wide application of the microcomputer-based protection system, the exigent need for designing a microcomputer-based protection system with higher reliability is present. This paper aims to introduce the typical structure of the microcomputer-based protection and to analyze the reliability of two kinds of microcomputer-based protection systems. And then a fault-tolerant system of double module redundancy is proposed on the basis of the configuration model of microcomputer-based protection＇s reliability. Finally, the higher reliability of the system proposed is proved by analyzing and comparing the reliability of three systems.