The Optimization of the Superheated Steam Temperature Control System Based On the Radiant Energy Signal

This thesis is based on the temperature of the steam-gas in a 300MW boiler. By analyzing the data from the working boiler, the main factors which affect on the superheated steam temperature can be concluded. In the other hand, a model of the superheated steam temperature system can be set up by the identification of the tool box of identification of matlab. From the signal of radiative energy in the furnace and the changing flux of the main steam, the changing tendency of the superheated steam temperature can be predicted. With these three objects working as feedforward variable and the ratio of the attemperator working as the regulating object, a new controlling method is made up. Simulated results are available through computer simulation on this new method.