1.前言 从70年代开始,在水电行业中,由微机系统构成的电站自动化管理、控制、监测及计算机通讯联网逐步取代了继电器控制和电话通讯的手段。从而使得电厂的自动化水平得到了根本的改变。 目前,国内的电站计算机控制系统多是国外引进的成套设备,或是由国外进口大部分设备,自己配置接口。由于进口设备造价昂贵,许多中小型电厂在经 1. Introduction Since the 1970s, in the hydropower industry, the automatic control, monitoring, and computer networking of power stations made up of microcomputer systems has gradually replaced the means of relay control and telephone communications. So that the level of automation of power plants has been fundamentally changed. At present, most domestic computer control systems for power plants are mostly imported complete sets of equipment, or imported from abroad, most of the equipment, configure their own interface. Due to the high cost of imported equipment, many small and medium-sized power plants are in operation