Modeling And Simulation For The Superheated Steam Temperature Control System In300MW Unit

In the process of the thermal power plant production, superheater works under the condition of high temperature and high pressure, thus the superheated steam temperature is the highest in the steam water system. As a main parameter in the thermal power generating units, superheated steam temperature measurement and control act an important role for power plant safety and economic operation. The superheater is a multi-container link with bigger delay and more inertia. The superheated steam temperature is affected by many disturbance factors, among which influence each other. For these different kinds of disturbance factors, each superheated steam temperature dynamic characteristics are not identical, and this will increase the superheated steam temperature control system complexity.Based on the analysis of the significance of superheated steam temperature control and the characteristic of superheated steam temperature, the SIMULINK in MATLAB is adopted to simulate conventional PID controller and fuzzy adaptive PID controller to construct the model of the control system respectively in this dissertation, and these two kinds of control system simulation analysis are realized. The results demonstrate that the latter controller is superior to the former one in many aspects.