继电保护装置可视化编程反馈回环问题研究

Research on the feedback loop diagram of graphic-oriented programming in relay protection

保护逻辑图分析是图形化编程软件的核心功能,保护逻辑图存在很多反馈回环,因这些回环的存在,有向图拓扑排序不能直接应用于保护逻辑图的分析。目前,大多数图形化编程软件都要求手动解除环路的问题。针对逻辑框图环路问题,深入研究了用弧表示活动优先关系的有向图(AOV)的拓扑分析技术,提出了基于反馈组件的有向回环图分析算法,实现了逻辑分析的自动解环,解决了环路分析和处理的难题。所实现的机制具有实现方便、通用性好等特点,已在继电保护装置可视化编程中得到应用。

Relay logic diagram analysis is the core function of graphic-oriented programming software. There are many feedback loops in relay logic diagram. Topological sort can＇t be applied to relay logic diagram analysis directly because of the feedback loops. Now, most of graphic-oriented programming softwares solve the problem by manual intervention. Aiming at the problem, this paper delves into the topology analysis based on activity on vertex directed diagram （AOV） networks and proposes the directed loop diagram analysis algorithm based on feedback component. This algorithm achieves looping-off automatically and solves the difficulties of analysis and processing of the loop diagram. The mechanism has the characteristics of easy implementation, better generalization and high reliability, and is adopted in the relay-protection development.