Automated control system design for Ultra Supercritical thermal power plant

Abstract

The work taken up for this paper is the implementation of process automation using DCS for Ultra Supercritical thermal power plant. The control of large scale ultra super critical power plant is very complicated and highly non linear because it involves the measurement and control of number of parameters in order to increase the overall plant efficiency by Optimizing the combustion process, increasing the steam parameters, reducing the condenser pressure and improving the internal efficiency of the steam turbines. Thus, Monitoring and control system such as DCS/SCADA are responsible for managing critical infrastructures operating in these environment. The control of various components such as once through boiler parts super heater (temperature, pressure, flow), reheater (temperature, pressure, flow), economiser (temperature, pressure and flow), air Preheater (temperature), burners (air/fuel ratio) and turbine operating conditions is implemented using the CENTUM CS 3000 of Yokogawa India ltd.