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阐述了IEC1131标准的基本原理以及可编程序控制器的软件构成、基本功能结构和硬件结构。分析了可编程思想以及可编程序控制器应用于变电站自动化系统的可行性和应用模式。说明了国内变电站自动化系统中可编程序控制器的应用现状和应用前景。
The basic principle of IEC1131 standard and the software constitution, basic function structure and hardware structure of PLC are expounded. The feasibility and application mode of programmable logic and programmable logic controller used in substation automation system are analyzed. Described the application of programmable logic controller in substation automation system and its application prospects.