Realize the Feedback Control Based on Incremental Observer in 300MW Unit Adopting EDPF-NT Distributed Control System

In this paper, the state feedback control based on the incremental function observer combined with the conventional PID control scheme for big capacity power unit is presented. It is designed in the distributed control system (DCS) EDPF-NT which is a new type of DCS developed by Electric Power Research Institute of China. It is useful for the coordinated control system(CCS) and the super-heater and re-heater steam temperature control systems of big capacity power plant in the practice.