Automatic control loop optimization method of thermal power plant based on internal model control

摘要

Automatic control loop is one of the important subsystems in the automatic control technology of thermal power plant. It is difficult to achieve satisfactory control effect when setting PID controller parameters in actual production process. This paper uses typical three impulse control of boiler water level as an example, introduces the closed-loop steady state time, gives the optimization strategy of PID controller parameters based on internal model control, and determines the design of feed-forward controller. Finally, the effectiveness and practicability of the control strategy are verified by the application on a typical 300MW unit.