基于PLC的变电站综合自动化系统研究设计
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为基础，对基于PLC的变电站综合自动化系统进行研究。
本设计在学习变电站综合自动化系统的基本概念，学习数据通信、可编程控制器和触摸屏相关知识的基础上，对基于SIMATIC S7-200 PLC的变电站综合自动化实际系统进行初步的硬件结构设计和软件设计。并以断路器控制、中央信号系统为具体研究对象，由SIMATIC S7-200 PLC和计算机、触摸屏组成硬件系统，实现了PLC和触摸屏之间的通信，编写了PLC和触摸屏程序，实现了断路器控制和中央信号系统的基本功能。
关键词 变电站，综合自动化，可编程控制器，触摸屏
Abstract
Integrated substation automation plays an important role in guaranteeing the power supply reliability and uality of electric energy, the security and stable operation of power systems. On the basis of the existing laboratory euipment, the design researches PLC-based integrated substation automation system.
On the basis of studying the basic concepts of integrated substation automation system, the relevant knowledge of data communication, PLC and touchpanel, the initial hardware structure and software of integrated substation automation system based on SIMATIC S7-200 PLC is designed. And circuit breaker control, the central signal system for specific subjects, by SIMATIC S7-200 PLC and computer, touchpanel consisting hardware system, the communication between PLC and touchpanel is implemented, the procedures of PLC and Touchpanel are prepared, circuit breaker control and the central signal system's basic functions are implemented.