Design and Implementation of Heat Exchange Station Control System

This paper introduced a design and implementation of heat exchange station control system based on PLC and industrial configuration software, including the control scheme and principle, hardware selection and software design, etc. The circulating pumps and replenishing pumps in the system can all be driven automatically by PLC and inverter. Main process parameters e.g. steam pressure and measurement temperature can all be shown on the industrial PC running configuration software, and instructions could be sent by the engineer and operator on-the-spot via the Human Machine Interface as well. The automatic pressures adjustment of steam supply of the heater by advanced PID algorithm has been realized finally. It is verified that the system is highly reliable and stable, and it greatly enhances the level of automation and pressure control accuracy of the heat exchange station and meets all the equipments running demands well.