Dual control strategy of the units load regulation by condensate throttling

Turbine Following Boiler coordinated control system of thermal power unit has big delay and inertial in load regulation process,while the store energy of the thermal power unit can be utilized effectively and the load response rate can be improved by condensate throttling to regulate the unit load. But condensate throttling is limited to the water lever of deaerator,so it is only be useful in the prophase of load regulation and the final load response still need the change of burning rate. Aiming at the above-mentioned problem,dual control system of the unit load regulation by condensate throttling has been put forward,and the differences in load response rate and the change of pressure between the dual control system and the Turbine Following Boiler coordinated control system have been compared by simulation. The result shows that the dual control system of load regulation by condensate throttling can be more effective in utilizing the storage heat,improving the load regulation rate and maintaining the stability of the main parameters of the thermal power unit.